TW201906497A - Light source device and display device - Google Patents

Abstract

A light source apparatus including a light-emitting module and a control unit is provided. The light-emitting module is configured to provide a light. The control unit makes the light emitted from the light-emitting module switched among a plurality of kinds of first light. Correlated color temperatures of the plurality of kinds of first light are different from each other, and circadian action factors of the plurality of kinds of first light are substantially the same as each other. A display apparatus is also provided.

Description

Light source device and display device

The disclosure relates to a light source device and a display device, and more particularly to a light source device and a display device that can provide different physiological stimulation light.

With the invention of Thomas Alva Edison's electric light bulb, the light source generated by electricity not only lights up the night, but also the civilization of mankind. With this artificial light source, mankind can use the time of night, thus driving it even further. Development of technology and education. In the study of the effects of light sources on physiological stimulation, Yasukouchi's research found that light sources with high color temperature at night inhibited the secretion of melatonin more than light sources with low color temperature. Secondly, since 2001, Branard's research on the relationship between the human eye and the physiological effect further pointed out the relationship between light source and melatonin secretion and physiological effects, and the light source and physiological stimulus are shown in Figure 1 Corresponding curve (2001 Action Spectrum for Melatonin Regulation in Humans: Evidence for a Novel Circadian Photoreceptor). It can further be explained that different wavelengths (400nm-550nm) of the light source will affect the physiological stimulus (circadian stimulus, CS) differently, and judge the degree of influence of the light source on the physiological stimulation of the human body. Therefore, if the light source is used at night or during the day, a suitable light source needs to be used. The spectrum composition provides suitable artificial lighting sources.

An embodiment of the present disclosure provides a light source device including a light emitting module and a control unit. The light emitting module is used for providing a light. The control unit switches the light emitted by the light emitting module between a first light and a second light, wherein the spectrum of the first light is different from the spectrum of the second light, and the color temperatures of the second light and the first light are substantially equal to each other. On the same.

An embodiment of the present disclosure provides a light source device including a light emitting module and a control unit. The light emitting module is used for providing a light. The control unit switches the light emitted by the light emitting module between a plurality of first lights, and the correlated color temperature (CCT) of the plurality of first lights are different from each other, and the physiological stimulation values of the plurality of first lights are substantially mutually different the same.

An embodiment of the present disclosure provides a light source device including a light emitting module and a control unit. The light emitting module is used for providing a light. The control unit is used to change the ratio of a first sub-ray to a second sub-ray to form a light, so the circadian action factor (CAF) and related color temperature of the light are different from the circadian action of sunlight The circadian effect factor of the factor relative to the trajectory of the correlated color temperature varies with respect to the trajectory of the correlated color temperature, where the circadian effect factor of one of the first sub-ray and the second sub-ray falls relative to the coordinate of the correlated color temperature in sunlight Below the trajectory of the circadian effect factor relative to the correlated color temperature, and the other circadian effect factor of the first sub-ray and the second sub-ray relative to the correlated color temperature Above the color temperature trajectory.

An embodiment of the present disclosure provides a light source device including a light emitting module and a control unit. The light emitting module is used for providing a light. The control unit is used to switch the light between a first light and a second light, thereby changing at least one of the blue light hazard and the physiological stimulus value of the light, wherein the wavelength of the main peak of the blue light in the spectrum of the first light is greater than that of the first light. The wavelength of the main blue light peak in the spectrum of the two rays.

An embodiment of the present disclosure provides a light source device including a light emitting module and a control unit. The light emitting module is used for providing a light, the light includes a red sub-ray, a green sub-ray and a blue sub-ray. The control unit is used to change the ratio of the red sub-ray, the green sub-ray and the blue sub-ray to form different white light. The wavelength of the main peak in the spectrum of the blue sub-ray falls in the range of 460 nm to 480 nm.

An embodiment of the present disclosure provides a light source device including a light emitting module and a control unit. The light emitting module is used for providing a light, the light includes a red sub-ray, a green sub-ray and a blue sub-ray. The control unit is used to change the ratio of the red sub-ray, the green sub-ray and the blue sub-ray to form different white light. The wavelength of the main peak in the spectrum of the blue sub-ray falls in the range of 440 nm to 450 nm.

An embodiment of the present disclosure provides a light source device including a light emitting module and a control unit. The light emitting module is used for providing a light. The control unit is configured to change a ratio of a first sub-ray to a second sub-ray to form a light, and thus change a correlated color temperature and blue light hazard of the light. Under the same correlated color temperature, the blue light hazard of the light is changeable, and the correlated color temperature of the first sub-ray is lower than the correlated color temperature of the second sub-ray.

An embodiment of the present disclosure provides a light source device including a first light source, a second light source, and a control unit. The first light source is used to generate a first light having a first spectral distribution, wherein the first light has a first color coordinate on a chromaticity diagram. The second light source is used to generate a second light having a second spectral distribution, wherein the second light has a second color coordinate on the chromaticity diagram. The second spectral distribution is different from the first spectral distribution. The control unit is configured to drive the first light source and the second light source, and the light source device is designed in such a manner that the first color coordinate and the second color coordinate substantially match.

An embodiment of the present disclosure provides a light source device including a first light source, a second light source, and a control unit. The control unit is used to control the first light source and the second light source. The first light source is used to provide a first light having a correlated color temperature between 2500 K and 3000 K and the color rendering index is greater than 90. The second light source is used to provide a The second light, and the color rendering index of the first light is greater than the color rendering index of the second light.

An embodiment of the present disclosure provides a light source device including a first light emitting diode light source and a second light emitting diode light source. The first light emitting diode light source and the second light emitting diode light source are configured to be operated in a first operation mode for emitting a first light and are configured to be operated in a first operation for emitting a second light. In the second operation mode, the first light and the second light fall within a same Macadam ellipse of a target correlated color temperature, and the physiological stimulus value of the first light is more physiological than that of the second light. At least 5% of the stimulus value, at least one of the first light emitting diode light source and the second light emitting diode light source includes at least one light emitting diode configured to excite at least one fluorescent material to emit light.

An embodiment of the present disclosure provides a light source device including a display and a backlight element for illuminating the display. The backlight element includes a first light emitting diode light source and a second light emitting diode light source. The first light-emitting diode light source and the second light-emitting diode light source are configured to be operated in a first operation mode for emitting a first light and are configured to be operated in a light emitting device for emitting a second light. A second operation mode in which the first light and the second light fall within an identical Macadam ellipse of a target correlated color temperature, and the physiological stimulus value of the first light is greater than the physiological stimulus value of the second light by the second light. 5% of physiological stimulation value.

An embodiment of the present disclosure provides a light source device including a first light source. The first light source is used for providing a first light. The coordinates of the circadian rhythm of the first light relative to the correlated color temperature (CCT, CAF) fall at (2700 ± 100 K, 0.197), (2700 ± 100 K, 0.696), (4500 ± 200 K, 0.474), ( The coordinates of the six circadian interaction factors of 4500 ± 200 K, 1.348), (6500 ± 300 K, 0.759) and (6500 ± 300 K, 1.604) are relative to the color temperature of the first region.

An embodiment of the present disclosure provides a light source device including a first light source for providing a first light. The coordinates of the circadian rhythm of the first ray relative to the coordinates of the correlated color temperature (CCT, CAF) fall within a region with an upper boundary, a lower boundary, and the circadian interaction factor between the upper and lower boundaries. Coordinates of correlated color temperature, in which the circadian effect factors are located on the upper boundary with respect to the coordinates of the correlated color temperature (2700 ± 100 K, 0.696), (4500 ± 200 K, 1.348), and (6500 ± 300 K, 1.604). The coordinates of the factors relative to the correlated color temperature (2700 ± 100 K, 0.197), (4500 ± 200 K, 0.474), and (6500 ± 300 K, 0.759) are on the lower boundary.

In order to make the above-mentioned features and advantages of this disclosure more comprehensible, embodiments are described below in detail with the accompanying drawings as follows.

FIG. 2A is a schematic diagram of a light source device according to an embodiment of the present disclosure, FIG. 2B is a variation according to the light source device in the embodiment of FIG. 2A, and FIG. 2C is a comparison of light emitted by the light source device in the embodiment of FIG. 2B A schematic diagram of the spectrum of light intensity and light wavelength is shown in FIGS. 2A to 2C. In this embodiment, the light source device 100 includes a light emitting module 110 and a control unit 120. The light emitting module 110 provides a light B. In this embodiment, the meaning represented by the light B is that the light emitted by the light emitting module 110 may have a divergence angle, and is not limited to a specific transmission direction. The control unit 120 is configured to switch the light B emitted by the light emitting module 110 to a first light L1 or a second light L2. The physiological stimulus value (circadian stimulus / photometry, CS / P) of the second light L2 is smaller than the physiological stimulus value of the first light L1, and the color temperature of the second light L2 and the first light L1 are substantially the same. Thereby, the light source device 100 can choose to provide the first light L1 with high physiological stimulus or the second light with low physiological stimulus according to the actual use environment, time and purpose in a situation where it is not easy for the user to perceive the change of light color temperature. L2 to maintain the user's natural physiological cycle and provide sufficient light source at the same time.

In detail, in this embodiment, the definition of the physiological stimulation value (CS / P) is as follows: Among them, CS (λ) represents the human physiological function, P (λ) represents the human vision function, P _0λ represents the spectrum after the light mixing is completed, and CS represents the physiological stimulus value of the spectrum after the light mixing is completed, and P represents the mixed light The intensity value of the spectrum after completion. Among them, the photopic function P (λ) is defined according to the Commission Internationale de l'éclairage (CIE). And the human physiological function CS (λ) can refer to the Action spectrum (1997) proposed by Professor Brainard. As shown in Figure 1, the human non-visual physiological function (2005) proposed by Mark Rea and the German pre-standard DIN V The light source device 100 of the present disclosure can be applied to various physiological functions. In addition, FIG. 3 is a schematic diagram of a color coordinate type of the same color temperature as defined by the American National Standard Institute (ANSI). Please refer to FIG. 3. In this embodiment, the definition of the same color temperature is in accordance with the US national standard. Definition of association. In other words, the light source with the same color temperature designed according to this standard is not easy to detect the color difference to the human eye. Among them, the detailed coordinate values of the color coordinate types defined by the American National Standards Institute shown in the schematic diagram of FIG. 3 are shown in Table 1 as follows: Table 1 The data range in Table 1 can be converted into the tolerance quadrangular color temperature range S1 to S8 in FIG. 3. For example, the color temperature coordinates that fall within the tolerance square color temperature range S1 are close to the human eye, and so on. In more detail, the tolerance quadrilaterals in Table 1 can be further converted into the range of color temperature values as shown in Table 2: Table 2 The data range in Table 2 can be converted into the ellipse color temperature range e1 to e8 in FIG. 3. Further, these ellipse color temperature ranges e1 to e8 are also David MacAdam ellipses. For example, the color temperature coordinates of the ellipse color temperature range e1 are close to the human eye, and so on. It is worth noting that the coordinate data in Table 1 and Table 2 are used to illustrate that the color temperature in this embodiment is substantially the same. For actual coordinate data, please refer to the latest definition of the American National Standards Institute, and the disclosure is not limited thereto. In another embodiment, the substantially same color temperatures represent the same elliptical color temperature range. In this way, the light source device 100 can select light sources that provide different physiological stimulation values according to the actual use environment, time and purpose in a situation where it is difficult for the user to perceive changes in light color and color temperature, so as to maintain the user's physiological cycle and provide sufficient Light source.

In detail, please refer to FIG. 2A. The control unit 120 can switch the light emitting module 110 between a plurality of light emitting modes. The light emitting modes include a first physiological stimulation mode and a second physiological stimulation mode. The light emitting module 110 includes multiple Light emitting units D, and these light emitting units D may include an electroluminescent element, a photoluminescent element, or a combination thereof. The light-emitting unit D includes at least a first light-emitting unit D1, at least a second light-emitting unit D2, and at least a third light-emitting unit D3. The first light-emitting unit D1 provides a first sub-light W1, and the second light-emitting unit D2 provides a first Two sub-rays W2, and the third light emitting unit D3 provides a third sub-ray W3. The peak range of at least one wave of the first sub-ray W1 may be greater than 420 nm and less than 480 nm, the peak range of at least one wave of the second sub-ray W2 may be greater than 480 nm and less than 540 nm, and the range of at least one wave of the third sub-ray W3 may be More than 540nm.

When the control unit 120 causes the light-emitting module 110 to switch to the first physiological stimulation mode, the control unit 120 causes the first portions P1 of the light-emitting units D to provide the first light L1, where the first light L1 may include the first sub-light W1 and the first light. Two child rays W2, and when the control unit 120 causes the light emitting module 110 to switch to the second physiological stimulation mode, the control unit 120 causes the second part P2 of the light emitting units D to provide a second light L2, where the second light L2 may include The first sub-light W1 and the third sub-light W3, and the color temperatures of the first light L1 and the second light L2 are substantially the same. Therefore, the physiological stimulation value can be changed to meet different needs without affecting the color temperature of the user.

In addition, the light source device 100 'in FIG. 2B is similar to the light source device 100 shown in FIG. 2A. In FIG. 2B, each light emitting unit correspondingly provides a light wave peak range as shown in the embodiment of FIG. 2A. However, the difference is that: The first portion P1 ′ of the light source device 100 ′ in FIG. 2B may further include a third light emitting unit D3.

In the first physiological stimulation mode, the first light ray L1 'provided by the first part P1' may include a first sub-ray W1, a second sub-ray W2, and a third sub-ray W3. In the second physiological stimulation mode, the second light L2 'provided by the second part P2' may include a first sub-light W1 and a third sub-light W3.

The spectrum after the light mixing in FIG. 2B is as shown in FIG. 2C. Since the physiological stimulus value of the second sub-ray W2 is greater than the physiological stimulus value of the third sub-ray W3, the first light L1 'is the same as the second light L2'. It is the same color temperature of 3000K. Because of its different mixed light spectrum, the physiological stimulus value is different. The spectrum of the first light L1 ′ is shown in the mixed light spectrum curve SH1 in FIG. 2C. The calculated physiological stimulus value CS / P is about 0.43. The mixed light spectrum of the second light L2 ′ is shown in the spectral curve SL1 in FIG. 2C, and the physiological stimulus value CS / P is about 0.27 after calculation, that is, the CS / P calculated by the above formula, in which the first light L1 ′ The calculated physiological stimulus value of is approximately 159% of the physiological stimulus value of the second light L2 '. Thereby, the physiological stimulus value of the second light L2 'and the first light L1' can be more significantly different. The above purpose can be achieved, and this disclosure is not limited thereto.

Further, the control unit 120 may enable the light B emitted by the light-emitting module 110 ′ to be switched to the first physiological stimulation mode (that is, to provide the first light L1 ′) or the second light at different times of the day as required. Physiological stimulation mode (ie providing a second light L2 '). In detail, FIG. 2D illustrates a timing diagram of the light source device in the embodiment of FIG. 2B having different lighting modes at different times. Please refer to FIG. 2B and FIG. 2D. For example, the light source device 100 'can be applied to restaurant lighting. The first light L1 'having a color temperature of 3000K and a higher physiological stimulus value can be provided during working hours (9:00 to 18:00 shown in FIG. 2D) to improve the alertness and working spirit of service personnel, At the same time, guests can also have a visually warm and comfortable feeling. In the evening (as shown in FIG. 2D from 18:00 to 22:00), the light emitting module 110 'in the light source device 100' can be switched to the second color temperature which is also 3000K but has a lower physiological stimulus value. The light L2 'can reduce the physiological stimulation to the service staff and the tenants without affecting the color temperature of the lighting, so as to avoid affecting the secretion of melatonin and affecting the health of the staff and the tenants. It is worth noting that the timing in FIG. 2D is only used to illustrate this embodiment, and may be changed according to implementation requirements in other embodiments, and the disclosure is not limited thereto.

Furthermore, FIG. 2E is a block diagram of the light source device according to FIG. 2A. Please refer to FIG. 2E. In this embodiment, the light source device 100 may further include a user interface 130, and the control unit 120 is configured according to the user interface 130. An input signal corresponding to the operation of the user UR determines the lighting mode in which the light source device 100 is currently located. In detail, the control unit 120 is, for example, a microprocessor, and can cause the light-emitting module 110 to switch to different lighting modes at a plurality of different times according to a time management data DT, wherein the time management data DT and the biological physiological clock Related. For example, the time management data DT may be the mode switching time data in the timing diagram in FIG. 2D, but this disclosure is not limited thereto. In more detail, the light source device 100 may further include a data writing system DR, and the time management data DT may be received and stored in a storage unit SV through the data writing system DR and the control unit 120, and the control unit 120 The time management data DT can be loaded from the storage unit SV to control the control unit 120 and cause the light source driving module DM of the light emitting module 110 to drive the first part P1 or the second part P2 to achieve the same as described in the embodiment of FIG. 2A efficacy. On the other hand, the light source device 100 may further include a connection interface 140, which transmits the time management data DT from the data writing system DR to the control unit 120. The connection interface 140 is a wired connection interface or a wireless connection interface. For example, the connection interface 140 is, for example, a manual switch or a remote controller. The user UR can select or change the lighting mode of the light source device 100 by using the manual switch or the remote controller. On the other hand, the light source device 100 can also automatically select or change the lighting mode according to the time according to the content of the time management data DT to meet the needs of the user UR.

However, the light emitting module 110 of the light source device 100 in the embodiment of FIG. 2A can provide the first light L1 and the second light L2 having the same color temperature and different physiological stimulation values. However, in other embodiments, light with the same or different color temperature and different physiological stimulus values can also be provided.

For example, FIG. 4A is a schematic diagram of a light source device in another embodiment of the present disclosure. Similar to the embodiment of FIG. 2A, the light source device 300 includes a first light emitting unit D1, a second light emitting unit D2, and a third light emitting unit D3. Including D31 and D32.

The first portion P13 of the light source device 300 includes a first light-emitting unit D1, a second light-emitting unit D2, and a third light-emitting unit D31, which correspondingly generate a first sub-ray W1, a second sub-ray W2, and a third sub-ray W3. The second sub-ray W2 may be generated by a phosphor being excited by the first sub-ray W1 (that is, the second light-emitting unit D2 may be a phosphor), and the third sub-ray W3 may be generated by a light-emitting diode. The second part P23 emitting light from the light source device 300 includes a first light emitting unit D1 and a third light emitting unit D32, which generate the first sub-ray W1 and the third sub-ray W3 correspondingly. The first sub-ray W1 may be a light generated by a light-emitting diode, and the third sub-ray W3 may be generated by a phosphor excited by the first sub-ray W1 (that is, the third light-emitting unit D32 may be a fluorescent light). Light body). Among them, at least one peak range of the first sub-ray W1 is greater than 420 nm and less than 480 nm, at least one peak range of the second sub-ray W2 is greater than 480 nm and less than 540 nm, and at least one peak range of the third sub-ray W3 is greater than 540 nm.

In the embodiment of FIG. 4A, the difference is that in the light source device 300 in FIG. 4A, the control module 320 causes the light B3 emitted by the light emitting module 310 to switch between the first light L13 and the second light L23, and the first light The color temperature of L13 and the second light L23 are different.

FIG. 4B illustrates a spectral curve of the first light ray L13 in the embodiment of FIG. 4A, and FIG. 4C illustrates a spectral curve of the second light ray L23 in the embodiment of FIG. 4A. In this embodiment, FIG. 4B uses a color temperature of 6500k as an example, and FIG. 4C uses a color temperature of 3000k as an example. The physiological stimulus value of the first light L13 provided by the light emitting module 310 of the light source device 300 is approximately 0.94, and the physiological stimulus of the second light L23 is obtained through the calculation of the above-mentioned equations through the spectral curves in FIGS. 4B and 4C. The stimulus value is about 0.27. The physiological stimulus value of the first ray L13 is about 3.48 times the physiological stimulus value of the second ray L23. That is, the physiological stimulus value of the first ray L13 is more than that of the second ray L23. The physiological stimulus value of the two rays L23 is more than 5%.

FIG. 4D illustrates a timing diagram of the light source device in the embodiment of FIG. 4A having different lighting modes in different periods. Thereby, the light source device 300 can be applied to home lighting. As shown in FIG. 4D, the light emitting module 310 of the light source device 300 can provide a high physiological stimulation value and a high color temperature during the daytime period (for example, 9:00 to 18:00). (6500k) light source to make people feel refreshed and boost the spirit. At night (for example, 18:00 to 22:00), it provides a light source with low physiological stimulation value and low color temperature (3000k) to make people warm and comfortable. a feeling of. The above-mentioned physiological stimulation values and the spectral curves of FIG. 4B and FIG. 4C are only used to illustrate this embodiment, and may be different according to actual requirements in other embodiments, and the disclosure is not limited thereto. In other embodiments, the light emitting module can provide light with different correlated color temperatures but substantially the same physiological stimulus value in different modes, or it can provide light with different or substantially the same optical parameters. It will be presented in the embodiments of FIGS. 15 to 22B described below.

FIG. 5A is a schematic diagram of a light source device according to another embodiment of the present disclosure, which is similar to the embodiment of FIG. 2A. However, in this embodiment, the light-emitting module 410 further includes at least a fourth light-emitting unit D4. The first light-emitting unit D1 provides a first sub-light W1, the second light-emitting unit D2 provides a second sub-light W2, the third light-emitting unit D3 provides a third sub-light W3, and the fourth light-emitting unit D4 provides a first Four sons of light W4. And as shown in FIG. 5A, the first portion P14 may include a first light-emitting unit D1, a second light-emitting unit D2, and a fourth light-emitting unit D4, and the second portion P24 may include a first light-emitting unit D1, a third light-emitting unit D3, and Fourth light-emitting unit D4. When the control unit 420 causes the light emitting module 410 to switch to the first physiological stimulation mode, the first light emitting unit D1 emits a first sub-ray W1, the second light emitting unit D2 emits a second sub-ray W2, and the fourth light emitting unit D4 emits a first The four sub-lights W4. When the control unit 420 causes the light-emitting module 410 to switch to the second physiological stimulation mode, the first light-emitting unit D1 emits the first sub-light W1, the third light-emitting unit D3 emits the third sub-light W3, and the fourth The light emitting unit D4 emits a fourth sub-ray W4, wherein the physiological stimulus value of the first sub-ray W1 is greater than the physiological stimulus value of the second sub-ray W2, and the physiological stimulus value of the second sub-ray W2 is greater than the physiological stimulus of the third sub-ray W3. value. In short, in the first physiological stimulation mode, the first light ray L14 provided by the light emitting module 410 of the light source device 400 may include a first sub-ray W1, a second sub-ray W2, and a fourth sub-ray W4. In the second physiological stimulation mode, the second light L24 provided by the light emitting module 410 of the light source device 400 may include a first sub-ray W1, a third sub-ray W3, and a fourth sub-ray W4. This can have similar effects to the light source device 100 in the embodiment shown in FIG. 2A.

In other words, the light emitting module 410 of the light source device 400 may include a first light emitting unit D1, a second light emitting unit D2, a third light emitting unit D3, and a fourth light emitting unit D4. Among them, at least the first light-emitting unit D1, the second light-emitting unit D2, and the fourth light-emitting unit D4 can form a first light source (ie, the first portion P14) and emit a first light L14, and the first light-emitting unit D1, the third light-emitting unit D3 The fourth light-emitting unit D4 can form a second light source (ie, the second portion P24) and emit a second light L24. The color temperature of the first light source and the second light source are substantially the same and have different physiological stimulation values.

In this embodiment, the first light-emitting unit D1 in FIG. 5A may be a light-emitting diode, the second sub-ray W2 may be generated by a first phosphor being excited by the first sub-ray W1, and the third sub-ray W3 It can be generated by a second phosphor being excited by the first sub-ray W1. In other words, in this embodiment, the second light-emitting unit D2 and the third light-emitting unit D3 can be photoluminescent (such as fluorescent) materials, which can be Excited by the first sub-ray W1 to generate a second sub-ray W2 and a third sub-ray W3 with different peak ranges. In addition, in this embodiment, the fourth light-emitting unit D4 is, for example, a light-emitting diode. However, in other embodiments, the fourth light-emitting unit D4 may be a photoluminescent material that is excited by light to generate a fourth sub-ray W4 ( (Such as phosphors), this disclosure is not limited to this. In another embodiment, the first light emitting unit D1, the second light emitting unit D2, the third light emitting unit D3, and the fourth light emitting unit D4 may be light emitting diodes or light emitting diodes and fluorescent light having different wave peak ranges. Body combination.

FIG. 5B illustrates the spectral curve of the first light ray L14 in the embodiment of FIG. 5A, and FIG. 5C illustrates the spectral curve of the second ray L24 in the embodiment of FIG. 5A, and FIG. 5D illustrates the Timing diagram of the light source device having different lighting modes at different periods. In detail, at least one wave peak range of the first sub-ray W1 is greater than 420 nm and less than 480 nm, and at least one wave peak range of the second sub-ray W2 is greater than 480 nm and less than 540 nm The peak range of at least one wave of the third sub-ray W3 is greater than 540 nm and less than 590 nm, and the peak range of at least one wave of the fourth sub-ray W4 is greater than 590 nm and less than 680 nm. Wherein, when the light source device 400 is in the first physiological stimulation mode, the spectrum of the first light L14 provided by the light emitting module 410 is as shown in the mixed light spectrum curve in FIG. 5B. When the light source device 400 is in the second physiological stimulation mode, the mixed light spectrum of the second light L24 provided by the light emitting module 410 is as shown in the spectral curve in FIG. 5C. In this embodiment, FIG. 5B and FIG. 5C use a color temperature of 6500K as an example. Based on the spectral curves in FIG. 5B and FIG. 5C, the physiological stimulus value of the first light L14 of the light source device 400 is about 0.94. The physiological stimulus value of the two light rays L24 is about 0.79. In this way, the light source device 400 can be applied to work lighting (such as hospital or factory lighting). As shown in FIG. 5D, the light emitting module 410 of the light source device 400 can be provided during daylight hours (for example, 9:00 to 18:00). High physiological stimulus value and high color temperature light source to make the staff feel refreshed and boost the spirit. At night (for example, 18:00 to 22:00), it provides a light source with low physiological stimulus value but still maintains high color temperature. Reduce physical stimuli to staff working at night to avoid affecting staff health. The above-mentioned physiological stimulation values and the spectral curves of FIG. 5B and FIG. 5C are only used to illustrate this embodiment, and may be different according to actual needs in other embodiments, and the disclosure is not limited thereto. It is worth noting that the light source device 400 in FIG. 5A can also be the light source device 300 in the embodiment of FIG. 4A. By adjusting the first sub-ray W1, the second sub-ray W2, the third sub-ray W3, and the fourth sub-ray The ratio between W4 is to provide the first light L14 and the second light L24 with different color temperatures and different physiological stimulus values of more than 5%. For a detailed description, refer to the embodiments of FIG. 2A and FIG. 4A, and details are not described herein again.

FIG. 6A is a schematic diagram of a light source device according to another embodiment of the present disclosure. FIGS. 6B to 6I illustrate the spectral curves of light provided by the light source device 500 under each color temperature condition, which is similar to the embodiment of FIG. 5A. The first sub-ray W1, the second sub-ray W2, the third sub-ray W3, and the fourth sub-ray W4 having the same wave peak range, but the difference is that, in this embodiment, the light source device 500 of FIG. 6A The light emitting module 510 can provide more groups of light sources with different color temperatures with high and low physiological stimulation values under these lighting modes. For example, in this embodiment, when the first light-emitting unit D11 and the first light-emitting unit D12 included in the light-emitting module 510 of the light source device 500 provide a first sub-light W1, and the second light-emitting unit D2 provides a second sub-light When the light beam W2 and the fourth light-emitting unit D4 provide the fourth sub-ray W4, the light-emitting module 510 of the light source device 500 can adjust the ratio of the first sub-ray W1, the second sub-ray W2, and the fourth sub-ray W4 to respectively The first light L15 (e.g. 6500K, CS / P value 0.82), the third light L35 (e.g. 5000K, CS / P value 0.67), and the fifth light L55 (e.g. 4000K, CS / P value is 0.54) and the seventh light ray L75 (for example, 3000K, CS / P value is 0.39). On the other hand, when the first light-emitting unit D11 and the first light-emitting unit D13 in the light-emitting module 510 of the light source device 500 provide the first sub-light W1, the third light-emitting unit D3 provides the third sub-light W3, and the fourth light-emitting unit D4. When the fourth sub-ray W4 is provided, the light-emitting module 510 of the light source device 500 can adjust the ratio of the first sub-ray W1, the third sub-ray W3, and the fourth sub-ray W4, so as to provide a lower physiology according to use requirements. The second light L25 (6500K, CS / P value 0.72) of the stimulus value, the fourth light L45 (5000K, CS / P value 0.57), the sixth light L65 (4000K, CS / P value 0.45), and the eighth light L85 ( 3000K, CS / P value 0.30). Therefore, the light emitting module 510 of the light source device 500 can provide more sets of light sources of color temperature than the light emitting modules 110 and 110 'of the light source devices 100 and 100' of Figs. 2A and 2C, thereby meeting various usage requirements. And has good application potential.

In detail, in this embodiment, the light source device 500 may include a first physiological stimulation mode, a second physiological stimulation mode, a third physiological stimulation mode, a fourth physiological stimulation mode, a fifth physiological stimulation mode, and a sixth physiological stimulation mode. 7. The seventh physiological stimulation mode and the eighth physiological stimulation mode. In addition, the control unit 520 causes the light emitted by the light-emitting module 500 under these physiological stimulation modes to be the first light L15 (spectral curve shown in FIG. 6B), the second light L25 (spectral curve shown in FIG. 6C), and the third light L35. (Spectral curve is shown in Figure 6D), the fourth light L45 (the spectrum curve is shown in Figure 6E), the fifth light L55 (the spectrum curve is shown in Figure 6F), the sixth light 65 (the spectrum curve is shown in Figure 6G), and the seventh light L75 (spectrum The curve is as shown in FIG. 6H) and the eighth light L85 (the spectrum curve is as shown in FIG. 6I), thereby providing more groups of light sources.

In more detail, the physiological stimulus value of the second ray L25 is smaller than the physiological stimulus value of the first ray L15, and the color temperature of the second ray L25 and the first ray L15 are substantially the same. The physiological stimulus value of the fourth ray L45 is smaller than the physiological stimulus value of the third ray L35, and the color temperature of the fourth ray L45 and the third ray L35 are substantially the same. The physiological stimulus value of the sixth ray L65 is smaller than the physiological stimulus value of the fifth ray L55, and the color temperatures of the sixth ray L65 and the fifth ray L55 are substantially the same. The physiological stimulus value of the eighth ray L85 is smaller than the physiological stimulus value of the seventh ray L75, and the color temperature of the eighth ray L85 and the seventh ray L75 are substantially the same. In addition, the color temperatures of the first light L15, the third light L35, the fifth light L55, and the seventh light L75 are substantially different, and the color temperatures of the second light L25, the fourth light L45, the sixth light L65, and the eighth light L85 are different. Essentially different. In other words, the light-emitting module 510 of the light source device 500 can provide more sets of light with a color temperature by adjusting the ratio of the first sub-ray W1, the second sub-ray W2, the third sub-ray W3, and the fourth sub-ray W4. And each group of light with the same color temperature can be switched between high physiological stimulation value and low physiological stimulation value.

Further, in this embodiment, the light emitting module 510 of the light source device 500 may include a first light emitting unit D11, D12, and D13, a second light emitting unit D2, a third light emitting unit D3, and a fourth light emitting unit D4. The first light-emitting units D11 and D12, the second light-emitting unit D2, and the fourth light-emitting unit D4 can form a first light source (that is, the first portion P1) and emit a first light L15 and a third light L35 in each physiological stimulation mode. A fifth light L55 or a seventh light L75. On the other hand, the first light-emitting units D11 and D13, the third light-emitting unit D3, and the fourth light-emitting unit D4 can form a second light source (that is, the second part P2) and emit a second light L25, a Four light rays L45, a sixth light beam L65, or an eighth light beam L85.

With this, the light source device 500 can change the mixing ratio of the first sub-ray W1, the second sub-ray W2, the third sub-ray W3, and the fourth sub-ray W4, and can have a high physiological performance at a color temperature of 6500K. The first light L15 with a stimulus value and the second light L25 with a low physiological stimulus value are switched. It is also possible to switch between a third light L35 having a high physiological stimulus value and a fourth light L45 having a low physiological stimulus value at a color temperature of 5000K. It is also possible to switch between a fifth light ray L55 having a high physiological stimulus value and a sixth light ray L65 having a low physiological stimulus value at a color temperature of 4000K. In addition, it is also possible to switch between a seventh light ray L75 having a high physiological stimulus value and an eighth light ray L85 having a low physiological stimulus value at a color temperature of 3000K. As such, the light source device 500 may have greater application potential.

In addition, further, the first light L15 and the second light L25 have different physiological stimuli of the same color temperature, the third light L35 and the fourth light L45 have different physiological stimuli of the same color temperature, and the fifth light L55 and the sixth light L65 has different physiological stimulation values of the same color temperature, and the seventh light L75 and the eighth light L85 have different physiological stimulation values of the same color temperature. However, in other embodiments, the first light L15 and the second light L25 may have different color temperatures, and the physiological stimulus value of the first light L15 is greater than the physiological stimulus value of the second light L25 by the physiological stimulus value of the second light L25 More than 5%. The third ray L35 and the fourth ray L45 may also have different color temperatures, and the physiological stimulus value of the third ray L35 is more than 5% more than the physiological stimulus value of the fourth ray L45. The fifth light ray L55 and the sixth light ray L65 may also have different color temperatures, and the physiological stimulus value of the fifth light ray L55 is more than 5% more than the physiological stimulus value of the sixth ray L65. The seventh ray L75 and the eighth ray L85 may also have different color temperatures, and the physiological stimulus value of the seventh ray L75 may be more than 5% of the physiological stimulus value of the eighth ray L85. Thereby, it is also possible to have similar effects to the light source device 500 in FIG. 6A.

FIG. 6J illustrates a timing diagram of the light source device in the embodiment of FIG. 6A having different lighting modes at different times. Please refer to FIG. 6J. For example, the light source device 500 can be applied to office lighting. (Eg, 8:00 to 11:00 in FIG. 6J), the first physiological stimulation mode can be switched to enable the light emitting module 510 to provide the first light L15 with a high color temperature (6500K) and a high physiological stimulation value. During the lunch break (11:00 to 13:00), the light source device 500 can be switched to the second physiological stimulation mode so that the light emitting module 510 provides a second light L25 with a high color temperature and a low physiological stimulation value, which can reduce the Physiological stimulation of the staff during a break. Then, the light source device 500 can switch back to the first physiological stimulation mode again in the afternoon period (13:00 to 16:00) after the lunch break ends to improve work efficiency. During the evening hours after work (as shown in FIG. 6J after 18:00), the light source device 500 can switch to the seventh physiological stimulation mode to enable the light emitting module 510 to provide the seventh light L75 with a low color temperature (3000K). In addition, the light source device 500 can be switched to the eighth physiological stimulation mode during sleep time (such as after 22:00 in FIG. 6J) so that the light emitting module 510 provides the eighth light with a low color temperature (3000K) and the lowest physiological stimulation value. L85. In addition, the light source device 500 can provide more types of light source combinations, thereby cooperating with a wider range of applications.

FIG. 7 is a schematic diagram of a light source device according to another embodiment of the present disclosure. FIG. 8A illustrates the light spectrum and the first light spectrum respectively emitted from the light emitting unit in the first lighting mode in FIG. 7. The spectrum of the light and the second light emitted from the light-emitting unit in the second lighting mode in 7 respectively, and FIG. 9 illustrates the CIE 1976 u'-v 'diagram of the first light and the second light in FIG. 7 (CIE 1976 u'-v 'diagram). In FIGS. 8A and 8B, the horizontal axis represents the wavelength and its unit is nanometer (nm), and the vertical axis represents the spectral intensity, and its unit is an arbitrary unit. Referring to FIG. 7, FIG. 8A, FIG. 8B and FIG. 9, the light source device 100 a of this embodiment is similar to the light source device 100 in FIG. 2A. The main difference therebetween is that in the light source device 100, the spectrum of the first light L1 is different. In the spectrum of the second light L2, and the color temperature of the first light L1 and the color temperature of the second light L2 are substantially the same as each other, the physiological stimulation values of the first light L1 and the second light L2 are not considered here.

In this embodiment, the light source device 100 a includes a light emitting module 110 a and a control unit 120. The light-emitting module is used to provide light B, and the control unit 120 switches the light B emitted by the light-emitting module 110a between the first light L1 and the second light L2. The spectrum of the first ray L1 (see FIG. 8A) is different from the spectrum of the second ray L2 (see FIG. 8B), and the color temperatures of the first ray L1 and the second ray L2 (see FIG. 9) are substantially the same as each other. Referring to FIG. 9, the color coordinates of the first light ray L1 and the color coordinates of the second light ray L2 are located substantially on the same line segment representing that the correlated color temperature is 3000 K.

In this embodiment, the control unit 120 causes the light emitting unit 110a to switch between a plurality of lighting modes. The lighting mode includes a first lighting mode and a second lighting mode. The light emitting module 110a includes a plurality of light emitting units, for example, a first light emitting unit D1, a second light emitting unit D2, a third light emitting unit D3, a fourth light emitting unit D4, and a fifth light emitting unit D5. When the control unit 120 switches the light emitting module 110a to the first lighting mode, the control unit 120 causes the first part or all of the light emitting units to emit the first light L1. In this embodiment, when the control unit 120 switches the light emitting module 110a to the first lighting mode, the control unit 120 causes all the light emitting units (including the first to fifth light emitting units D1-D5) to emit the first light L1. When the control unit 120 switches the light emitting module 110a to the second lighting mode, the control unit 120 causes the second part P2 (for example, including the first to fourth light emitting units D1-D4) of the light emitting unit to emit the second light L2. The first part and the second part are partially the same or completely different from each other.

The light emitting unit (for example, the first to fifth light emitting light emitting units) includes an electroluminescent light-emitting element, a light-induced light-emitting element, or a combination thereof.

In this embodiment, the light emitting module 110a includes at least one first light emitting unit D1, at least one second light emitting unit D2, at least one third light emitting unit D3, at least one fourth light emitting unit D4, and at least one fifth light emitting unit D5. . The first light-emitting unit D1 provides a first sub-light W1, the second light-emitting unit D2 provides a second sub-light W2, the third light-emitting unit D3 provides a third sub-light W3, and the fourth light-emitting unit D4 provides a fourth sub-light W4 and the fifth light-emitting unit D5 provide a fifth sub-ray W5. The second part P2 includes at least a first light emitting unit D1, a second light emitting unit D2, a third light emitting unit D3, and a fourth light emitting unit D4.

When the control unit 120 switches the light emitting module 110a to the first lighting mode, the first light emitting unit D1 emits a first sub-ray W1, the second light emitting unit D2 emits a second sub-ray W2, and the third light emitting unit D3 emits a third sub-ray W3, the fourth light emitting unit D4 emits a fourth sub-ray W4 and the fifth light emitting unit D5 emits a fifth sub-ray W5. When the control unit 120 switches the light emitting module 110a to the second lighting mode, the first light emitting unit D1 emits a first sub-ray W1, the second light emitting unit D2 emits a second sub-ray W2, and the third light emitting unit D3 emits a third sub-ray W3 and the fourth light emitting unit D4 emit a fourth sub-ray W4. Furthermore, the fifth sub-ray W5 is an invisible ray.

In this embodiment, one of the first light L1 and the second light L2 may include invisible light. For example, the first sub-ray W1, the second sub-ray W2, the third sub-ray W3, and the fourth sub-ray W4 may be visible rays, and the fifth sub-ray W5 is an invisible ray. In particular, in this embodiment, the first sub-ray W1 is a blue ray, the second sub-ray W2 is a green ray, the third sub-ray W3 is a yellow ray, the fourth sub-ray W4 is a red ray, and the fifth sub-ray Light W5 is ultraviolet light. Moreover, in this embodiment, the first light emitting unit D1 is a first light-emitting diode (LED), the second light emitting unit D2 is a first phosphor, and the third light emitting unit D3 Is a second phosphor, the fourth light-emitting unit D4 is a third phosphor, and the fifth light-emitting unit D5 is a second light-emitting diode. The second sub-ray W2 is generated by the first phosphor excited by the first sub-ray W1, the third sub-ray W3 is generated by the second phosphor excited by the first sub-ray W1, and the fourth sub-ray W4 is generated by the first Generated by a third phosphor excited by a sub-ray W1. In this embodiment, the first, second and third phosphors can be doped into a sealing material covering the first light emitting unit D1 (eg, the first light emitting diode).

In this embodiment, the first light L1 includes ultraviolet light, but the second light L2 does not include ultraviolet light. Therefore, when the light emitting module 110a is switched to the first lighting mode, the light emitting module 110a emits a first light L1 containing white light and ultraviolet light, so the first light L1 is suitable for illuminating a product containing a fluorescent whitening agent. For example, cloth products. When the light-emitting module 110a is switched to the second lighting mode, the light-emitting module 110a emits a second light L2 that includes white light but does not include ultraviolet light. Therefore, the second light L2 is suitable for illuminating leather shoes and leather products that are easily damaged by ultraviolet light. And artwork. Furthermore, in the light source device 100a of this embodiment, because the color temperatures of the first light ray L1 and the second light ray L2 are substantially the same as each other, when a plurality of light source devices 100a or light emitting modules 110a are located in the same display space and emit light, When one light L1 and the second light L2, the light colors of the light source device 100a or the light emitting module 110a are consistent, and the first light L1 and the second light L2 may achieve different effects, respectively.

In another embodiment, the first sub-ray W1 is a blue ray, the second sub-ray W2 may be a cyan ray, the third sub-ray W3 may be a lime color ray, and the fourth The sub-ray W4 is red and the fifth sub-ray W5 is ultraviolet. Therefore, the spectrum of the second ray L2 including the first sub-ray W1, the second sub-ray W2, the third sub-ray W3, and the fourth sub-ray W4 is similar. Continuous spectrum of natural white light.

In yet another embodiment, the fifth sub-ray W5 may be infrared rays, and the infrared rays may be used in a positioning system. Therefore, the first light L1 can be used for both lighting and positioning.

FIG. 10 is a schematic diagram of a light source device according to another embodiment of the disclosure. FIG. 11A illustrates the spectrum of the light emitted from the light-emitting unit and the first light in the first illumination mode in FIG. 10 respectively. FIG. 11B illustrates the spectrum of the light and the second light emitted from the light emitting unit in the second illumination mode in FIG. 10 respectively. FIG. 12 illustrates the color coordinates of the first ray and the second ray in FIG. 10 in the CIE 1976 u'-v 'diagram. In FIGS. 11A and 11B, the horizontal axis represents the wavelength, and the unit is nanometer (nm), and the vertical axis represents the spectral intensity, and the unit is an arbitrary unit. 10, 11A, 11B, and 12, the light source device 100b in this embodiment is similar to the light source device 100a in FIG. 7, and the main differences therebetween are as follows.

In this embodiment, the general color rendering index (general CRI) of the first light L1 'is larger than the general color rendering index of the second light L2'. The general color rendering index is defined as the average value of the color rendering index R1 (CRI R1) to the color rendering index R8 (CRI R8), and marked as "Ra". Furthermore, in this embodiment, the light emission efficiency of the second light ray L2 'is greater than the light emission efficiency of the first light ray L1'.

In this embodiment, the light emitting module 110b includes at least one first light emitting unit D1 ', at least one second light emitting unit D2', at least one third light emitting unit D3 ', at least one fourth light emitting unit D4', and at least one first Five light emitting units D5 'and at least one sixth light emitting unit D6'. The first light-emitting unit D1 'provides a first sub-light W1', the second light-emitting unit D2 'provides a second sub-light W2', the third light-emitting unit D3 'provides a third sub-light W3', and the fourth light-emitting unit D4 'A fourth sub-ray W4' is provided, a fifth light-emitting unit D5 'provides a fifth sub-ray W5' and a sixth light-emitting unit D6 'provides a sixth sub-ray W6'.

When the control unit 120 switches the light emitting module 110b to the first lighting mode, the control unit 120 makes the first part P1 '(for example, the first, second, third, and fourth light emitting units D1', D2 ', D3 of the light emitting unit). 'And D4') emit a first light L1 '. When the control unit 120 switches the light emitting module 110b to the second lighting mode, the control unit 120 causes the second part P2 'of the light emitting unit (for example, the first, fifth, and sixth light emitting units D1', D5 ', D6') A second light L2 'is emitted. The first portion P1 'and the second portion P2' are partially the same as each other or completely different from each other. In this embodiment, the first portion P1 'and the second portion P2' are partially the same as each other, because the first portion P1 'and the second portion P2' both include the first light emitting unit D1 '.

The first portion P1 'includes at least a first light emitting unit D1', a second light emitting unit D2 ', a third light emitting unit D3', and a fourth light emitting unit D4 '. The second portion P2 'includes at least a first light emitting unit D1', a fifth light emitting unit D5 ', and a sixth light emitting unit D6'. When the control unit 120 switches the light emitting module 110b to the first lighting mode, the first light emitting unit D1 'emits a first sub-ray W1', the second light emitting unit D2 'emits a second sub-ray W2', and the third light emitting unit D3 ' The third sub-ray W3 'is emitted and the fourth light emitting unit D4' emits a fourth sub-ray W4 '. When the control unit 120 switches the light emitting module 110b to the second lighting mode, the first light emitting unit D1 'emits a first sub-ray W1', the fifth light emitting unit D5 'emits a fifth sub-ray W5' and a sixth light emitting unit D6 ' The sixth sub-ray W6 'is emitted.

In this embodiment, the first sub-ray W1 'is a blue ray, the second sub-ray W2' is a green ray, the third sub-ray W3 'is a yellow ray, the fourth sub-ray W4' is a red ray, and the fifth sub-ray The light W5 'is a red light and the sixth sub-light W6' is a light yellow-green light.

In this embodiment, the first light emitting unit D1 'is a first light emitting diode, the second light emitting unit D2' is a first phosphor, the third light emitting unit D3 'is a second phosphor, and the fourth light emitting unit D4 'is a third phosphor, the fifth light-emitting unit D5' is a second light-emitting diode, and the sixth light-emitting unit D6 'is a fourth phosphor. The first phosphor, the second phosphor, and the third phosphor are excited by the light (for example, the seventh sub-ray W7 ') emitted by the seven light-emitting unit D7' (for example, the third light-emitting diode), and respectively The second sub-ray W2 ', the third sub-ray W3', and the fourth sub-ray W4 'are emitted. The fourth phosphor is excited by the light (for example, the eighth sub-light W8 ') emitted by the eighth light-emitting unit D8' (for example, the fourth light-emitting diode), and emits a sixth sub-light W6 '. In this embodiment, for example, the seventh sub-ray W7 'and the eighth sub-ray W8' are blue rays. In this embodiment, the first phosphor, the second phosphor, and the third phosphor may be doped into the sealing material 113 covering the seventh light-emitting unit D7 ′, and the fourth phosphor may be doped. Into the sealing material 115 covering the eighth light emitting unit D8 '.

In this embodiment, the general color rendering index of the first light L1 'is greater than 90 and larger than the general color rendering index of the second light L2', but the light emitting efficiency of the second light L2 'is greater than that of the first light L1'. Therefore, when the light-emitting module 110b is switched to the first lighting mode, the light-emitting module 110b emits a first light L1 'having a higher general color rendering index. Therefore, the first light L1' is suitable for illuminating fresh food. Therefore, fresh food may have better color. When the light-emitting module 110b is switched to the second lighting mode, the light-emitting module 110b emits a second light L2 'having a higher light-emitting efficiency. Therefore, the second light L2' is suitable for a situation where light-emitting efficiency needs to be considered. As shown in Figs. 11A, 11B, and 12, the first light ray L1 '(Fig. 11A) and the second light ray L2' (Fig. 11B) have different spectra, but have substantially the same color temperature (Fig. 12). In FIG. 12, the color coordinates of the first light ray L1 'and the color coordinates of the second light ray L2' are located substantially on the same line segment representing that the correlated color temperature is between 2500K and 3000K. Furthermore, the spectrum of the second light L2 'has a low physiological stimulus value and a low blue light hazard.

FIG. 13A is a diagram illustrating a spectrum of light emitted from a light-emitting unit and a first light in the first light emitting mode in FIG. 10 according to another embodiment of the present disclosure, and FIG. 13B is a diagram illustrating another embodiment according to the present disclosure. The spectrum of the light and the second light emitted from the light-emitting unit in the second light emitting mode in FIG. 10 are shown, and FIG. 14 is a diagram illustrating the first light and the second light in FIG. 10 according to another embodiment of the present disclosure. Color coordinates in the CIE 1976 u'-v 'diagram. In FIGS. 13A and 13B, the horizontal axis represents wavelength and its unit is nanometer (nm), while the vertical axis represents spectral intensity and its unit is arbitrary unit. 10, 13A, 13B, and 14, the structure of the light source device 100b in this embodiment is substantially the same as the structure of the light source device 100b of the embodiment in FIGS. 10, 11A, 11B, and 12, but the main difference is that: The spectra of the first light ray L1 ′ and the second light ray L2 ′ in this embodiment (as shown in FIGS. 13A and 13B) are different from the embodiments in FIGS. 10, 11A, 11B, and 12 (as shown in FIGS. 11A and 11B). The spectrum of the first light ray L1 'and the second light ray L2'.

In this embodiment, the color rendering index R14 (CRI R14) of the first light L1 'is larger than the color rendering index R14 of the second light L2', and the color rendering index R13 (CRI R13) of the second light L2 'is larger than the first Color rendering index R13 of light L1 '. In particular, in this embodiment, the color rendering index R14 of the first light ray L1 'is greater than 90 and the color rendering index R13 of the second light ray L2' is greater than 90. Furthermore, in this embodiment, the general color rendering index of the first light ray L1 'and the second light ray L2' is greater than 84.

In this embodiment, when the light emitting module 110b is switched to the first lighting mode, the light emitting module 110b emits a first light L1 'having a high color rendering index R14, so the first light L1' is suitable for lighting Green plant. Therefore, green plants can have better colors. When the light-emitting module 110b is switched to the second lighting mode, the light-emitting module 110b emits a second light L2 'having a high color rendering index R13, so the second light L2' is suitable for illuminating a human face or a portrait, and A human face or portrait may have better colors. As shown in Figs. 13A, 13B, and 14, the first light ray L1 '(Fig. 13A) and the second light ray L2' (Fig. 13B) have different spectra, but have substantially the same color temperature (Fig. 14). In Fig. 14, the color coordinates of the first light ray L1 'and the color coordinates of the second light ray L2' are located substantially on the same line segment representing a correlated color temperature of 4000 K.

The light emitting unit of the above embodiment is not limited to a light emitting diode or a phosphor. In other embodiments, the light-emitting unit may be an organic light-emitting diode (OLED) or other suitable light-emitting elements.

FIG. 15 is a schematic diagram of a light source device according to another embodiment of the present disclosure. FIG. 16A is a spectrum of sub-rays emitted by the light emitter of FIG. 15, and FIG. 16B is a circadian effect factor of light emitted by the light-emitting module of FIG. 15. A plot of relative color temperature. 15, 16A, and 16B, the light source device 600 in this embodiment includes a light emitting module 610 and a control unit 620. The light emitting module 610 is used to provide light B6. The control unit 620 switches the light B6 emitted by the light-emitting module 610 among various first lights. The correlated color temperature (CCT) of the plurality of first light rays are different from each other, and the circadian action factors of the plurality of first light rays are substantially the same as each other. The circadian effect factor is the aforementioned physiological stimulation value (CS / P). For example, in FIG. 16B, the black square points represent a circadian effect factor and related color temperature of a first light, and the black square points arranged substantially along a horizontal line in FIG. 16B represent those belonging to a plurality of first lights, respectively. Multiple circadian factors and multiple correlated color temperatures. "The circadian acting factors of the plurality of first rays are substantially the same as each other" means that the change amount of these circadian acting factors is within ± 20% of the average value of these circadian acting factors, preferably within the circadian rhythm Within 10% of the mean value of the effect factor.

In this embodiment, the light emitting module 610 includes a plurality of light emitters E1, E2, E3, E41, and E42, and respectively emits sub-rays V1, V2, V3, V41, and V42 in different wavelength ranges, and the sub-rays V1, V2 , V3, V41 and V42 constitute the light B6 provided by the light emitting module 610. The light B6 emitted from the light emitting module 610 is switched between the plurality of first lights by changing the ratio of the sub-lights V1, V2, V3, V41, and V42. The light emitters E1, E2, E3, E41, and E42 include an electroluminescent element, a photoluminescent element, or a combination thereof. The electroluminescent element is, for example, a light emitting diode wafer, and the photoluminescent element is, for example, a phosphor. In this embodiment, the light emitters E1, E2, E3, and E41 are light-emitting diode chips, and the light emitter E42 is a phosphor. In addition, the light emitter E41 and the light emitter E42 constitute a light emitter E4. The light emitter E41 is, for example, a blue light emitting diode wafer, and the light emitter E42 is, for example, a yttrium aluminum garnet (YAG) fluorescent lamp. The light emitter, and the light emitter E4 is a white light emitting diode. That is, the sub-ray V41 is a blue sub-ray, the sub-ray V42 is a yellow sub-ray, the sub-ray V41 and the sub-ray V42 constitute a sub-ray V4, and the sub-ray V4 is a white ray. Specifically, when the sub-ray V41 from the light emitter E41 illuminates the light emitter E42, the light emitter E42 converts the sub-ray V41 into a sub-ray V42. The sub-ray V42 and the unconverted sub-ray V41 constitute a sub-ray V4.

In this embodiment, the peak wavelength of the sub-ray V1 falls within a range of 460 nm (nm) to 470 nm, and the peak wavelength of the sub-ray V2 falls within a range of 515 to 525 nm, and the sub-ray V3 The peak wavelength of λ is in the range of 620 nm to 630 nm and the sub-ray V4 is white light with a correlated color temperature of 3100 K. In this embodiment, the full width at half maximum (FWHM) of each sub-ray V1, V2, and V3 emitted by the light-emitting diode chip is less than 40 nm. For example, the half-height width of the sub-ray V1 is 25 nm, the half-height width of the sub-ray V2 is 32 nm, the half-height width of the sub-ray V3 is 18 nm, and the half-height of the sub-ray V4 is 74. Nano, the sub-ray V4 includes the sub-ray V42 and the unconverted sub-ray V41. In this embodiment, the sub-rays V1, V2, V3, and V4 are visible light, but the disclosure is not limited thereto.

The control unit 620 is used to change the intensity ratio of the sub-rays V1, V2, V3, and V4 by changing the current or voltage applied to the light emitters E1, E2, E3, and E41, respectively. Switch between lights. In this embodiment, the ratio of the sub-rays V1, V2, V3, and V4 is changed by the pulse width modulation of the light emitters E1, E2, E3, and E41. For example, when the physiological stimulus value of the light B6 is 0.8 (as shown in FIG. 16B), the pulse width modulation is performed by the control unit 620, and the correlated color temperature of the light B6 can be adjusted in the range of 3750K to 5500K. For example, when the physiological stimulus value is 0.8 and the correlated color temperature is 3750K, the duty cycle ratio of the pulse width modulation of the light emitters E1, E2, E3, and E41 is 3: 18: 17: 2. When the physiological stimulation value is 0.8 and the correlated color temperature is 5500K, the ratio of the duty cycles of the pulse width modulation of the light emitters E1, E2, E3, and E41 is, for example, 13: 11: 0: 20.

In this embodiment, the Duv values of the plurality of first light rays are all less than 0.005. For the color consistency of white light, the standard correlated color temperature still has a tolerable range of chromaticity. The Duv value is defined as the variation perpendicular to the Planckian locus in the CIE 1976 color space, which is used to account for changes in chromaticity. Generally, if the Duv value is less than 0.005, the observer cannot easily discern the color inconsistency.

FIG. 16C is a relationship diagram of the color rendering index of the light emitted by the light emitting module of FIG. 15 with respect to the correlated color temperature. Referring to FIGS. 15, 16A, and 16C, in this embodiment, the control unit 620 also switches the light B6 emitted by the light emitting module 610 between a plurality of types of second light, wherein the correlated color temperatures of the plurality of types of second light are different from each other, and The color rendering indices of the plurality of second light rays are substantially the same as each other. For example, in FIG. 16C, the black square points refer to the color rendering index and correlated color temperature of a second ray, and the black square points arranged substantially along a horizontal line in FIG. 16C represent the plurality of second rays respectively. Multiple color rendering indices and multiple correlated color temperatures. "The color rendering index of the plurality of second light rays is substantially the same as each other" means that the change of the color rendering index is within ± 5. In this embodiment, the Duv values of the plurality of second light rays are all less than 0.005. In this embodiment, when the color rendering index of the light B6 is 85, the pulse width modulation is performed by the control unit 620, and the correlated color temperature of the light B6 can be adjusted in the range of 2700 K to 6500 K.

In this embodiment, the control unit 620 also switches the light B6 emitted from the light emitting module 610 among a plurality of types of third light, wherein the correlated color temperatures of the plurality of types of third light are substantially the same as each other, and the Color rendering index or circadian effect factors (ie, physiological stimulation values) are different from each other. The "correlated color temperature of the plurality of third light rays is substantially the same as each other" and the definition of "correlated color temperature is substantially the same" is the same as the color temperature mentioned in the second paragraph of the embodiment (ie, paragraph [0006]) and Table 2 Definition. In this embodiment, the black square points in FIG. 16B or FIG. 16C represent a physiological stimulus value and a correlated color temperature of a third light, or a color rendering index and a correlated color temperature of a third light, and are substantially along the graph. The black square dots arranged in a vertical line of 16B or 16C represent multiple physiological stimulus values and multiple correlated color temperatures respectively belonging to the multiple third rays, or multiple color rendering indexes and multiple correlated color temperatures respectively belonging to the multiple third rays. . Furthermore, in this embodiment, the Duv values of the plurality of third light rays are all less than 0.005. For example, when the correlated color temperature is 3000 K, and the pulse width modulation is performed by the control unit 620, the physiological stimulus value of the light B6 can be adjusted in the range of 0.3 to 0.6. In addition, when the correlated color temperature is 3000 K, by performing pulse width modulation by the control unit 620, the color rendering index of the light B6 can be adjusted within a range of 55 to 93.

The control unit 620 can also switch the light B6 emitted by the light-emitting module 610 among a plurality of fourth lights. The circadian effect factor (ie, the physiological stimulation value) of the plurality of fourth lights includes or is substantially equal to a range of a correlated color temperature. The circadian effect factor of solar light, where the correlated color temperature range includes the range from 3000 K to 6500 K. The gray square points and gray lines in FIG. 16B represent a plurality of circadian effect factors corresponding to a plurality of correlated color temperatures of sunlight, and all the black square points in FIG. 16B represent the corresponding ones of the plurality of fourth rays. Multiple circadian factors for multiple correlated color temperatures. FIG. 16D is a graph showing the relationship between the circadian effect factor of sunlight and the correlated color temperature. Referring to FIGS. 15, 16A, 16B, and 16D, in the present embodiment, the area of the black square point in FIG. 16B includes a gray square point and a gray line, which represent the circadian effect factors of the fourth light (such as physiological stimulation). Value) a circadian effect factor of sunlight that is included in this correlated color temperature range (for example, a correlated color temperature range from 3000 K to 6500 K). Furthermore, in this embodiment, the Duv values of the plurality of fourth rays are less than 0.005.

In this embodiment, the light B6 emitted from the light-emitting module 610 performs the above-mentioned pulse width modulation through the control unit 620 to change the ratio of the sub-lights V1, V2, V3, and V4. Switch between multiple third lights and multiple fourth lights.

In the light source device 600 according to this embodiment, since the light beam B6 emitted from the light-emitting module 610 can be switched among a plurality of kinds of first rays, a plurality of kinds of second rays, a plurality of kinds of third rays, and a plurality of kinds of fourth rays, the light source apparatus 600 Can have more applications.

FIG. 17 is a schematic diagram of a light source device according to another embodiment of the present disclosure. FIG. 18A is a spectrum of sub-rays emitted by the light emitter of FIG. 17, and FIG. 18B is a circadian effect factor of light emitted by the light-emitting module of FIG. 17. A plot of relative color temperature. FIG. 18C is a relationship diagram of the color rendering index of the light emitted by the light emitting element of FIG. 17 with respect to the correlated color temperature, wherein the white square points represent the color rendering index of the light B6 emitted by the light emitting module in FIG. 17 and the corresponding correlated color temperature. Referring to FIGS. 17, 18A, 18B, and 18C, the light source device 600a in this embodiment is similar to the light source device 600 in FIG. 15, and the main differences therebetween are as follows. In this embodiment, the light emitting module 610a includes a plurality of light emitters E11a, E12a, E2a, E3a, E4a, E5a, E6a, and E7a, which respectively emit sub-rays V11a, V12a, V2a, V3a, V4a of different wavelength ranges. , V5a, V6a, and V7a, and the sub-rays V11a, V12a, V2a, V3a, V4a, V5a, V6a, and V7a constitute the light B6 provided by the light emitting module 610a. In this embodiment, the light emitters E11a, E2a, E3a, E4a, E5a, E6a, and E7a are light emitting diode chips, and the light emitter E12a is a phosphor. In addition, the light emitter E11a and the light emitter E12a constitute the light emitter E1a, and the light emitter E12a is, for example, a light-colored phosphor. When the sub-ray V11a emitted by the light emitter E11a is irradiated on the light emitter E12a, the light emitter E12a converts the sub-ray V11a into a sub-ray V12a. The sub-ray V12a and the unconverted sub-ray V11a form a sub-ray V1a. In this embodiment, nearly all of the sub-rays V11a are converted into sub-rays V12a by the light emitter E12a, and the unconverted sub-rays V11a can be ignored, so the sub-rays V1a can be regarded as having a yellowish green color.

In this embodiment, the peak wavelength of the sub-ray V1a falls within a range of 550 nm to 560 nm, the peak wavelength of the sub-ray V2a falls within a range of 440 nm to 450 nm, and the peak wavelength of the sub-ray V3a Falling in the range of 460 nm to 470 nm, the peak wavelength of the sub-ray V4a falls in the range of 490 to 500 nm, and the peak wavelength of the sub-ray V5a falls in the range of 520 to 530 nm The sub-ray V6a falls in the range of 610 nm to 620 nm, and the peak wavelength of the sub-ray V7a falls in the range of 650 nm to 670 nm. Furthermore, for example, the half-height width of the sub-ray V1a is 93 nm, the half-height width of the sub-ray V2a is 16 nm, the half-height width of the sub-ray V3a is 20 nm, and the half-height of the sub-ray V4a It is 22 nanometers, the half-height width of the sub-ray V5a is 28 nanometers, the half-height width of the sub-ray V6a is 14 nanometers, and the half-height width of the sub-ray V7a is 15 nanometers.

The control unit 620 is used to change the sub-rays V1a, V2a, V3a, V4a, V5a, V6a and V7a by changing the current or voltage applied to the light emitters E11a, E2a, E3a, E4a, E5a, E6a and E7, respectively. The ratio of the intensity, so the light B6 can be switched among a plurality of kinds of first rays, a plurality of kinds of second rays, a plurality of kinds of third rays, and a plurality of kinds of fourth rays. In this embodiment, the ratios of the sub-rays V1a, V2a, V3a, V4a, V5a, V6a, and V7a are changed by the pulse width modulation of the light emitters E11a, E2a, E3a, E4a, E5a, E6a, and E7a. For example, as shown in FIG. 18B, when the physiological stimulus value of the light B6 is 0.7, the correlated color temperature of the light B6 can be modulated by the control unit 620 and adjusted in the range of 2700 K to 6500 K . When the color rendering index of the light B6 is 93, the correlated color temperature of the light B6 can be adjusted in the range of 2700 K to 6500 K by performing the pulse width modulation by the control unit 620. In addition, when the correlated color temperature of the light B6 is 6000 K, the physiological stimulus value of the light B6 can be modulated within a range of 0.62 to 1.4 by the control unit 620 performing pulse width modulation. When the correlated color temperature of the light B6 is 6000 K, the color rendering index of the light B6 can be adjusted within a range of 1 to 98 by the control unit 620 performing pulse width modulation. In this embodiment, the Duv values of the plurality of first rays, the plurality of second rays, the plurality of third rays, and the plurality of fourth rays are less than 0.005.

FIG. 19A to FIG. 19D are diagrams showing the relationship between the circadian rhythm factor of the light emitted from the light emitting module of FIG. 17 and the correlated color temperature when the color rendering index is greater than 80, 90, 93, and 95, respectively. Referring to FIGS. 17, 18B, and 19A to 19D, the control unit 620 can also switch the light B6 emitted by the light emitting module 610a between a plurality of fourth lights, and the circadian effect factors (ie, physiological stimulation values) of the plurality of fourth lights include or It is substantially the same as the circadian effect factor of sunlight in a correlated color temperature range, where the correlated color temperature range is, for example, a range of 3000 K to 6500 K. The gray square points and gray lines in FIGS. 18B and 19A to 19D represent the circadian effect factors corresponding to the correlated color temperature of sunlight, respectively, and all the black square points in FIGS. 18B and 19A to 19D respectively correspond to the various types Circadian effect factor for correlated color temperature of the fourth light. In Figures 18B, 19A, and 19B, the circadian effect factors (such as physiological stimulus values) of the plurality of fourth rays include the day and night of sunlight in this correlated color temperature range (for example, a correlated color temperature range from 3000 K to 6500 K). Rhythmic factor. In the embodiment of FIG. 19A, the color rendering index of the plurality of fourth rays is greater than 80. In addition, in FIGS. 19C and 19D, the circadian effect factors (ie, physiological stimulation values) of the plurality of fourth rays are substantially equal to the sun in this correlated color temperature range (for example, a correlated color temperature range from 3000 K to 6500 K). The circadian effect factor of light, in which "the circadian effect factor (ie, the physiological stimulus value) of the plurality of fourth rays is substantially equal to the circadian effect factor of the sunlight" refers to the circadian effect of the plurality of fourth rays The deviation values of the factors from the circadian effect factor of sunlight in the corresponding correlated color temperature fall within ± 20% of the corresponding circadian effect factor of the corresponding correlated color temperature, and preferably fall within the corresponding correlated color temperature. Within ± 10% of the circadian effect factor.

FIG. 20 is a schematic diagram of a light source device according to another embodiment of the present disclosure. FIG. 21A is a spectrum of sub-rays emitted by the light emitter of FIG. 20, and FIG. 21B is a circadian rhythm of rays emitted by the light-emitting module of FIG. 20. A plot of the effect factor versus correlated color temperature. FIG. 21C is a relationship diagram of the color rendering index of the light emitted by the light emitting module of FIG. 20 with respect to the correlated color temperature, in which white square points represent the color rendering index of the light B6 emitted by the light emitting module in FIG. 20 and its corresponding correlation. Color temperature. Referring to FIGS. 20 and 21A to 21C, the light source device 600b in this embodiment is similar to the light source device 600a in FIG. 17, and the main differences therebetween are as follows. In this embodiment, the light emitter E1b is used to replace the light emitter E1a of FIG. 17. The light emitter E1b is, for example, a light-emitting diode wafer, and the peak wavelength of the sub-ray V1b emitted through the light emitter E1a falls in the range of 550 nm to 560 nm. For example, the FWHM of the sub-ray V1b is 28 nm.

The control unit 620 is used to change the currents and voltages applied to the light emitters E1b, E2a, E3a, E4a, E5a, E6a, and E7a, respectively, to change the sub-rays V1b, V2a, V3a, V4a, V5a, V6a, and V7a. The ratio of the intensity, therefore, the light B6 can be switched among a plurality of first rays, a plurality of second rays, a plurality of third rays, and a plurality of fourth rays. In this embodiment, the ratios of the sub-rays V1b, V2a, V3a, V4a, V5a, V6a, and V7a are changed by the pulse width modulation of the light emitters E1b, E2a, E3a, E4a, E5a, E6a, and E7a. For example, as shown in FIG. 21B, when the physiological stimulus value of the light B6 is 0.4, the correlated color temperature of the light B6 can be adjusted in the range of 2700 K to 6500 K by performing the pulse width modulation by the control unit 620. When the color rendering index of the light B6 is 90, the correlated color temperature of the light B6 can be adjusted in the range of 2700 K to 6500 K by performing pulse width modulation by the control unit 620. In addition, when the correlated color temperature of the light B6 is 6000 K, the physiological stimulus value of the light B6 can be adjusted within a range of 0.4 to 1.4 by the control unit 620 performing pulse width modulation. When the correlated color temperature of the light B6 is 6000 K, the color rendering index of the light B6 can be adjusted within a range of 1 to 92 by performing pulse width modulation by the control unit 620. In this embodiment, the Duv values of the plurality of first rays, the plurality of second rays, the plurality of third rays, and the plurality of fourth rays are less than 0.005.

22A and 22B are diagrams showing the relationship between the circadian rhythm factor of the light emitted from the light emitting module of FIG. 20 and the correlated color temperature when the color rendering index is greater than 80 and 90, respectively. Referring to FIGS. 20, 21B, 22A, and 22B, the control unit 620 may also switch the light B6 emitted by the light emitting module 610b between a plurality of fourth lights, and the circadian effect factors (ie, physiological stimulation values) of the plurality of fourth lights include or The circadian effect factor is substantially equal to sunlight in a correlated color temperature range, where the correlated color temperature range is, for example, a range of 3000 K to 6500 K. The gray dots and gray lines in Figs. 21B, 22A, and 22B represent multiple circadian effect factors corresponding to multiple correlated color temperatures of sunlight, respectively, and all the black square points in Figs. 21B, 22A, and 22B represent A plurality of circadian effect factors corresponding to a plurality of correlated color temperatures of the plurality of fourth rays, respectively. In FIGS. 21B and 22A, the circadian effect factors (ie, physiological stimulus values) of the plurality of fourth rays include the circadian effect factors of sunlight in a correlated color temperature range (for example, a correlated color temperature range from 3000 K to 6500 K). . In addition, in FIG. 22B, the circadian effect factors (such as physiological stimulus values) of the plurality of fourth rays are substantially the same as the day and night of sunlight in this correlated color temperature range (for example, a correlated color temperature range from 3000 K to 6500 K). Rhythmic effect factors, where "the circadian rhythm effect factors (such as physiological stimulus values) of the various fourth rays are substantially the same as the circadian rhythm effect factors of the sunlight" refers to the corresponding circadian effect factors of the various fourth rays from The deviations of the circadian rhythm factor of sunlight in the correlated color temperature are ± 20% of the corresponding circadian rhythm factor of the corresponding correlated color temperature, and preferably ± 10% of the circadian rhythm factor of the corresponding correlated color temperature.

FIG. 23 is a schematic diagram illustrating a light source device according to another embodiment of the disclosure. 24A to 24D are spectra of sub-rays emitted from the light emitters of the four embodiments of FIG. 23. 25A and 25B are diagrams showing the relationship between the circadian effect factor of the light emitted by the light emitting module of FIG. 23 and the sunlight and the relative color temperature. Please refer to FIGS. 23 to 25B. The light source device 600c of this embodiment includes a light emitting module 610c and a control unit 620c. The light emitting module 610c is used to provide a light B6c. The control unit 620c is used to change the ratio of a first sub-ray V1c to a second sub-ray V2c to form the light B6c. Therefore, the circadian effect factor and the related color temperature of the light along the circadian effect factor which is different from the sunlight are relative to The circadian effect factor of the light B6c of the trajectory of the correlated color temperature (for example, a dotted line in FIG. 25A) is changed relative to the trajectory of the correlated color temperature (for example, a curve formed by a triangle or a circle in FIG. 25A), where the first The coordinates of the circadian effect factor with respect to the correlated color temperature of one of the sub-ray V1c and the second sub-ray V2c are below the trajectory of the circadian effect factor of the sunlight with respect to the correlated color temperature, and the first sub-ray V1c and the second The coordinate of the other circadian effect factor with respect to the correlated color temperature of the light V2c is located above the trajectory of the circadian effect factor of the sunlight with respect to the correlated color temperature. For example, the correlated color temperature of the first sub-ray V1c is lower than the correlated color temperature of the second sub-ray V2c. The coordinate of the circadian rhythm effect factor relative to the correlated color temperature of the left end of the curve formed by the triangle in FIG. 25A is expressed as the first sub-coordinate. Coordinates of the circadian effect factor of light V1c with respect to the correlated color temperature, and above the trajectory of the circadian effect factor of sunlight with respect to the correlated color temperature, and the circadian effect at the right end of the curve formed by the triangle in FIG. 25A The coordinates of the factor with respect to the correlated color temperature are expressed as the coordinates of the circadian effect factor of the second sub-ray V2c with respect to the correlated color temperature, and are below the locus of the circadian effect factor of the sunlight with respect to the correlated color temperature. In another embodiment, the coordinates of the circadian rhythm factor relative to the correlated color temperature at the left end of the curve formed by the circle in FIG. 25A are expressed as the coordinates of the circadian rhythm factor relative to the correlated color temperature of the first sub-ray V1c. And below the trajectory of the circadian effect factor of sunlight with respect to the correlated color temperature, and the coordinate of the circadian effect factor with respect to the correlated color temperature at the right end of the curve formed by the circle in FIG. 25A is expressed as the second child The coordinate of the circadian effect factor of light V2c with respect to the correlated color temperature, and above the trajectory of the circadian effect factor of sunlight with respect to the correlated color temperature.

In this embodiment, the light emitting module 610c includes a plurality of light emitters Elc and E2c, which respectively emit a first sub-ray V1c and a second sub-ray V2c. The light emitters Elc and E2c may each include at least one electroluminescent element, at least one photoluminescent element, or a combination thereof. The electroluminescent element is, for example, a light emitting diode wafer, and the photoluminescent element is, for example, a phosphor. In this embodiment, the first sub-ray V1c and the second sub-ray V2c may be white light. The light emitter Elc may include a plurality of light emitting diode wafers of different colors, such as a red light emitting diode wafer, a green light emitting diode wafer and a blue light emitting diode wafer, or have at least one kind of fluorescent light. The at least one light emitting diode wafer of the body is, for example, a blue light emitting diode wafer covered with a yellow phosphor. Similarly, the light emitter E2c may include a plurality of light emitting diode wafers of different colors, such as a red light emitting diode wafer, a green light emitting diode wafer, and a blue light emitting diode wafer, or have at least At least one light emitting diode wafer of a phosphor is, for example, a blue light emitting diode wafer covered with a yellow phosphor. FIG. 24A illustrates the spectra of the first sub-ray V1c and the second sub-ray V2c in one embodiment, and FIG. 24B illustrates the spectra of the first sub-ray V1c and the second sub-ray V2c in another embodiment. In the embodiment of FIG. 24A, the coordinates of the circadian effect factor of the first sub-ray V1c with respect to the correlated color temperature (that is, the coordinates of the left end point of the curve formed by the circle in FIG. 25A) fall on the day and night of sunlight The rhythm effect factor is below the trajectory of the correlated color temperature, and the coordinates of the circadian rhythm effect factor of the second sub-ray V2c with respect to the correlation color temperature (that is, the coordinates of the right end point of the curve formed by the circle in FIG. 25A) fall Above the trajectory of the circadian effect factor of sunlight relative to the correlated color temperature trajectory. Therefore, relative to sunlight, light B6c can be adjusted to have a low correlated color temperature and low circadian effect factors, especially at night to maintain the user's natural physiological cycle and provide sufficient light sources at the same time, and relative to sunlight, can be It is adjusted to have a high correlated color temperature and a high circadian effect factor to promote the user's work.

On the other hand, in the embodiment of FIG. 24B, the coordinates of the circadian effect factor of the first sub-ray V1c with respect to the correlated color temperature (that is, the coordinates of the left endpoint of the curve formed by the triangle in FIG. 25A) fall on the sun The circadian effect factor of light is above the locus of the correlated color temperature, and the coordinates of the circadian effect factor of the second sub-ray V2c with respect to the correlated color temperature (that is, the coordinates of the right end point of the curve formed by the triangle in FIG. 25A ) Falls below the trajectory of the circadian effect factor of sunlight relative to the correlated color temperature. Therefore, relative to sunlight, the light B6c can be adjusted to have a low correlated color temperature and a high circadian effect factor to promote the user's work in a low correlated color temperature, and relative to sunlight, it can be adjusted to have a high correlated color temperature and Low circadian rhythms act to maintain the user's natural physiological cycle at high correlated color temperatures.

24C and 24D illustrate the spectra of the first sub-ray V1c and the second sub-ray V2c of the other two embodiments. In the embodiment of FIG. 24C, the coordinates of the circadian effect factor of the first sub-ray V1c with respect to the correlated color temperature (that is, the coordinates of the left endpoint of the curve formed by the square in FIG. 25B) fall on the circadian rhythm of sunlight The effect factor is below the trajectory of the correlated color temperature, and the coordinates of the circadian effect factor of the second sub-ray V2c with respect to the correlated color temperature (that is, the coordinates of the right endpoint of the curve formed by the square in FIG. 25B) also fall on The circadian factor of sunlight is below the trajectory of the correlated color temperature. Therefore, when its correlated color temperature is adjusted, compared to sunlight, light B6c always has a low circadian effect factor to always maintain the user's natural physiological cycle.

On the other hand, in the embodiment of FIG. 24D, the circadian effect factor of the first sub-ray V1c with respect to the coordinates of the correlated color temperature (that is, the coordinates of the left endpoint of the curve formed by the star in FIG. 25B) falls on The circadian effect factor of sunlight is above the locus of the correlated color temperature, and the coordinate of the circadian effect factor of the second sub-ray V2c with respect to the correlated color temperature (that is, the right end of the curve formed by the star in FIG. 25B (Coordinates of) are also above the trajectory of the circadian effect factor of sunlight relative to the correlated color temperature. Therefore, when its correlated color temperature is adjusted, compared to sunlight, light B6c always has a high circadian effect factor to always promote the user's work.

Table 3 below illustrates the optical data of the first sub-ray V1c and the second sub-ray V2c with different proportions. table 3

In Table 3, the ratio of PWM1 and PWM2 refers to the ratio of the duty cycle of the pulse width modulation of the light emitters E1c and E2c, and is the ratio of the intensity of the first sub-ray V1c and the second sub-ray V2c. In addition, x and y in Table 3 refer to the x and y color coordinates of the CIE 1931 color space chromaticity diagram (CIE 1931 color space chromaticity diagram).

FIG. 26 is a schematic diagram illustrating a light source device according to another embodiment of the disclosure. 27A and 27B are spectrums of sub-rays emitted from the light emitters of the two embodiments of FIG. 26. 28A and 28B are diagrams showing the relationship between the circadian effect factor of the light emitted by the light emitting module of FIG. 26 and the sunlight and the relative color temperature. Please refer to FIGS. 26 to 28B. The light source device 600d of FIG. 26 is similar to the light source device 600c of FIG. 23, and the main differences therebetween are described below. In this embodiment, the light emitting module 610d of the light source device 600d further includes a light emitter E3d that emits a third sub-ray V3d. The light emitter E3d may include at least one electroluminescent element, at least one photoluminescent element, or Its combination. The electroluminescent element is, for example, a light emitting diode wafer, and the photoluminescent element is, for example, a phosphor. In this embodiment, the third sub-ray V3d may be white light. The light emitter E3d may include a plurality of light emitting diode chips of different colors, such as a red light emitting diode chip, a green light emitting diode chip and a blue light emitting diode chip, or at least one kind of fluorescent light. The at least one light emitting diode wafer of the body is, for example, a blue light emitting diode wafer covered with a yellow phosphor.

In this embodiment, the control unit 620c is used to change the ratio of the first sub-ray V1c, the second sub-ray V2c, and the third sub-ray V3d to form the light B6d. Therefore, the circadian rhythm factor of the light B6d relative to the coordinate of the relevant color temperature A change is made between a region having three vertices Q1, Q2, and Q3 of the circadian rhythm factor located at the first sub-ray V1c, the second sub-ray V2c, and the third sub-ray V3d relative to the correlated color temperature.

FIG. 27A illustrates the spectra of the first sub-ray V1c, the second sub-ray V2c, and the third sub-ray V3d of an embodiment, and FIG. 27B illustrates the first sub-ray V1c, the second sub-ray V2c, and the first sub-ray The spectrum of the three ray V3d. Further, FIG. 28A corresponds to the embodiment of FIG. 27A, and FIG. 28B corresponds to the embodiment of FIG. 27B. In the embodiment of FIG. 27A, the correlated color temperature of the first sub-ray V1c (that is, the correlated color temperature of the vertex Q1) is lower than the correlated color temperature of the second sub-ray V2c (that is, the correlated color temperature of the vertex Q2), and the correlated color temperature of the third sub-ray V3d. (Ie, the correlated color temperature of the vertex Q3) is lower than the correlated color temperature of the second sub-ray V2c (that is, the correlated color temperature of the vertex Q2). Furthermore, the coordinates of the circadian rhythm factor of the first sub-ray V1c with respect to the correlated color temperature (that is, the coordinates of the vertex Q1) and the coordinates of the circadian rhythm factor of the third sub-ray V3d with respect to the relevant color temperature (the coordinates of the vertex Q3) On the opposite sides of the circadian effect factor of sunlight relative to the trajectory of the correlated color temperature, respectively. In this embodiment, the coordinate of the circadian rhythm factor of the first sub-ray V1c with respect to the correlated color temperature (that is, the coordinate of the vertex Q1) falls below the trajectory of the circadian rhythm factor of the sunlight with respect to the correlated color temperature. The coordinate of the circadian effect factor of the light V2c relative to the correlated color temperature (that is, the coordinate of the vertex Q2) falls above the trajectory of the circadian effect factor of the sunlight relative to the correlated color temperature, and the circadian effect factor of the third sub-ray V3d is relatively The coordinates at the correlated color temperature (ie, the coordinates of the vertex Q3) fall above the trajectory of the circadian effect factor of the sunlight relative to the track of the correlated color temperature.

In the embodiment of FIG. 27B, the correlated color temperature of the first sub-ray V1c (that is, the correlated color temperature of the vertex Q1) is lower than the correlated color temperature of the second sub-ray V2c (that is, the correlated color temperature of the vertex Q2), and the correlated color temperature of the third sub-ray V3d. (Ie, the correlated color temperature of the vertex Q3) is higher than the correlated color temperature of the first sub-ray V1c (that is, the correlated color temperature of the vertex Q1). Furthermore, the coordinates of the circadian rhythm factor of the second sub-ray V2c with respect to the correlated color temperature (that is, the coordinates of the vertex Q2) and the coordinates of the circadian rhythm factor of the third sub-ray V3d with respect to the relevant color temperature (the coordinates of the vertex Q3) On the opposite sides of the circadian effect factor of sunlight relative to the trajectory of the correlated color temperature, respectively. In this embodiment, the coordinate of the circadian rhythm factor of the first sub-ray V1c with respect to the correlated color temperature (that is, the coordinate of the vertex Q1) falls below the trajectory of the circadian rhythm factor of the sunlight with respect to the correlated color temperature. The coordinate of the circadian effect factor of the light V2c relative to the correlated color temperature (that is, the coordinate of the vertex Q2) falls above the trajectory of the circadian effect factor of the sunlight relative to the correlated color temperature, and the circadian effect factor of the third sub-ray V3d is relatively The coordinates at the correlated color temperature (ie, the coordinates of the vertex Q3) fall below the trajectory of the circadian effect factor of the sunlight relative to the track of the correlated color temperature.

Table 4 below illustrates the optical data of the first sub-ray V1c, the second sub-ray V2c, and the third sub-ray V3d with different proportions. Table 4

In Table 4, the ratio of (PWM1) :( PWM2) :( PWM3) refers to the ratio of the duty cycle of the pulse width modulation of the light emitters E1c, E2c, and E3d. It is about the first sub-ray V1c, the second The ratio of the intensity of the sub-ray V2c to the third sub-ray V3d. Furthermore, x and y in Table 4 refer to the x and y color coordinates in the CIE 1931 color space chromaticity diagram.

FIG. 29 is a schematic diagram illustrating a light source device according to another embodiment of the disclosure. FIG. 30 is a spectrum of the sub-rays emitted from the light emitter of FIG. 29. FIG. 31 is a relationship diagram of the circadian rhythm factor of the light emitted by the light emitting module of FIG. 29 and the sunlight with respect to the correlated color temperature. Please refer to FIGS. 29 to 31. The light source device 600e of FIG. 29 is similar to the light source device 600d of FIG. 26, and the main differences therebetween are described below. In this embodiment, the light emitting module 610e of the light source device 600e further includes a light emitter E4e that emits a fourth sub-ray V4e. The light emitter E4e may include at least one electroluminescent element, at least one photoluminescent element, or combination. The electroluminescent element is, for example, a light emitting diode wafer, and the photoluminescent element is, for example, a phosphor. In this embodiment, the fourth sub-ray V4e may be white light. The light emitter E4e may include a plurality of light emitting diode chips of different colors, such as a red light emitting diode chip, a green light emitting diode chip, and a blue light emitting diode chip, or have at least one kind of fluorescent light. The at least one light emitting diode wafer of the body is, for example, a blue light emitting diode wafer covered with a yellow phosphor.

In this embodiment, the controller 620c is used to change the ratio of the first sub-ray V1c, the second sub-ray V2c, the third sub-ray V3d, and the fourth sub-ray V4e to form the light B6e, so the circadian effect factor of the light B6e The coordinates relative to the correlated color temperature are at the four vertices Q1 of the circadian rhythm factor having the first sub-ray V1c, the second sub-ray V2c, the third sub-ray V3d, and the fourth sub-ray V4e relative to the coordinates of the correlated color temperature. Change between a region of Q2, Q3, and Q4.

FIG. 30 illustrates spectra of the first sub-ray V1c, the second sub-ray V2c, the third sub-ray V3d, and the fourth sub-ray V4e of FIG. 29. In this embodiment, the correlated color temperature of the first sub-ray V1c (that is, the correlated color temperature of the vertex Q1) is lower than the correlated color temperature of the second sub-ray V2c (that is, the correlated color temperature of the vertex Q2), and is lower than that of the fourth sub-ray V4e. The correlated color temperature (ie, the correlated color temperature of vertex Q4), and the correlated color temperature of the third sub-ray V3d (the correlated color temperature of the vertex Q3) is lower than the correlated color temperature of the second sub-ray V2c (the correlated color temperature of the vertex Q2), and is low The correlated color temperature of the fourth sub-ray V4e (ie, the correlated color temperature of the vertex Q4). The coordinates of the circadian effect factor of the first sub-ray V1c with respect to the correlated color temperature (that is, the coordinates of the vertex Q1) and the coordinates of the circadian effect factor of the third sub-ray V3d with respect to the relevant color temperature (that is, the coordinates of the vertex Q3) are respectively in the sun. Opposite sides of the circadian effect factor of light with respect to the trajectory of the correlated color temperature, the circadian effect factor of the second sub-ray V2c with respect to the coordinate of the correlated color temperature (that is, the coordinate of the vertex Q2) and the circadian effect of the fourth sub-ray V4e The coordinates of the factor with respect to the correlated color temperature (that is, the coordinates of the vertex Q4) are on opposite sides of the circadian effect factor of the sunlight with respect to the locus of the correlated color temperature, respectively. In this embodiment, the coordinate of the circadian rhythm factor of the first sub-ray V1c with respect to the correlated color temperature (that is, the coordinate of the vertex Q1) falls below the trajectory of the circadian rhythm factor of the sunlight with respect to the correlated color temperature. The coordinate of the circadian effect factor of the light V2c with respect to the correlated color temperature (that is, the coordinate of the vertex Q2) falls above the trajectory of the circadian effect factor of the sunlight with respect to the correlated color temperature, and the circadian effect factor of the third sub-ray V3d is relative to The coordinates of the correlated color temperature (that is, the coordinates of the vertex Q3) are above the trajectory of the circadian effect factor of the sunlight relative to the correlated color temperature, and the coordinates of the circadian effect factor of the fourth sub-ray V4e are related to the coordinates of the correlated color temperature (the vertex Q4). Coordinates) below the trajectory of the circadian effect factor of sunlight relative to the correlated color temperature.

Table 5 below illustrates the optical data of the first sub-ray V1c, the second sub-ray V2c, the third sub-ray V3d, and the fourth sub-ray V4e with different proportions. table 5

In Table 5, the ratio of (PWM1): (PWM2): (PWM3): (PWM4) refers to the ratio of the duty cycle of the pulse width modulation of the optical transmitters E1c, E2c, E3d, and E4e. Ratios of the intensities of the sub-rays V1c, the second sub-rays V2c, the third sub-rays V3d, and the fourth sub-rays V4e. Furthermore, x and y in Table 5 refer to the x and y color coordinates in the CIE 1931 color space chromaticity diagram.

FIG. 32 is a spectrum of sub-rays emitted from a light emitter according to another embodiment of FIG. 23. FIG. 33 is a diagram showing the relationship between the circadian effect factor and the correlated color temperature of the light emitted by the light emitting module of FIG. 32. FIG. 34A is a relationship diagram of the blue light hazard relative to the correlated color temperature of the light emitted by the light emitting module in the embodiment of FIG. 32 when the correlated color temperature is greater than 5000 K. FIG. FIG. 34B is a relationship diagram of the blue light hazard relative to the color rendering index of the light emitted by the light emitting module in the embodiment of FIG. 32 when the correlated color temperature is greater than 5000 K. FIG. Please refer to FIG. 23 and FIGS. 32 to 34B. The embodiment of FIG. 32 is similar to the embodiment of FIG. 24A, and the main differences therebetween are described below. In this embodiment, the controller 620c is used to change the ratio of the first sub-ray V1c to the second sub-ray V2c to form the light B6c, so the related color temperature and blue light hazard of the light B6c are changed. Under the same related color temperature, The blue hazard of light B6c is changeable. For example, a lead straight line in FIG. 34A represents the coordinate point (ie, the diamond point) of the blue light hazard relative to the related color temperature that can pass through a plurality of light rays B6c having different blue light hazards at the same related color temperature. In this embodiment, the correlated color temperature of the first sub-ray V1c is lower than the correlated color temperature of the second sub-ray V2c, and the first sub-ray V1c and the second sub-ray V2c are white light.

Further, in this embodiment, under the same blue light hazard, the color rendering index of the light B6c is variable. For example, a horizontal line in FIG. 34B represents the coordinate point (ie, the diamond point) of the blue light hazard relative to the relevant color temperature under the same blue light hazard, which can pass through a plurality of light rays B6c having different color rendering indexes, respectively. Therefore, when using a blue light hazard, the user can select multiple color rendering indexes.

FIG. 35 is a schematic diagram illustrating a light source device according to another embodiment of the disclosure. 36A is a spectrum of red sub-rays V1f, green sub-rays V2f, and first blue sub-rays V3f emitted by the light emitters E1f, E2f, and E3f of FIG. 35. FIG. 36B is a spectrum of the red sub-ray V1f, the green sub-ray V2f, and the second blue sub-ray V4f emitted by the light emitters E1f, E2f, and E4f of FIG. 35. FIG. 37A is a diagram of the relationship between the circadian rhythm factor of the first light ray VB1f and the second light ray VB2f from the light emitters E1f, E2f, and E3f and the light emitters E1f, E2f, and E4f, respectively, with respect to the x-color coordinates. FIG. 37B is a diagram of the relationship between the circadian rhythm factor of the first light ray VB1f and the second light ray VB2f emitted from the light emitters E1f, E2f, and E3f and the light emitters E1f, E2f, and E4f with respect to the y-color coordinates, respectively. FIG. 38A is a relationship diagram of the blue light hazards of the first light rays VB1f and the second light rays VB2f emitted from the light emitters E1f, E2f, and E3f and the light emitters E1f, E2f, and E4f with respect to the color rendering index, respectively. FIG. 38B is a relationship diagram of the blue light hazards of the first light rays VB1f and the second light rays VB2f emitted from the light emitters E1f, E2f, and E3f and the light emitters E1f, E2f, and E4f with respect to the circadian effect factor, respectively.

Referring to FIGS. 35 to 38B, the light source device 600f of FIG. 35 is similar to the light source device 600c of FIG. 23, and the main differences therebetween are as follows. In this embodiment, the light emitting module 610f is used to provide a light B6f. The control unit 620f is configured to switch the light B6f between a first light VB1f and a second light VB2f, and thus change at least one of a blue light hazard and a circadian effect factor of the light B6f. FIG. 36A illustrates the spectrum of the first ray VB1f, FIG. 36B illustrates the spectrum of the second ray VB2f, and the blue light main peak wavelength (for example, 460 nm in FIG. 36A) in the spectrum of the first ray VB1f (refer to FIG. 36A) is greater than The main peak wavelength of blue light in the spectrum of the second light ray VB2f (see FIG. 36B) (for example, 447 nm in FIG. 36B).

In this embodiment, the first ray VB1f includes a red sub-ray V1f, a green sub-ray V2f, and a first blue sub-ray V3f, and the second ray VB2f includes a red sub-ray V1f, a green sub-ray V2f, and a second The blue sub-ray V4f, the main peak wavelength (for example, 460 nm) in the spectrum of the first blue sub-ray V3f (see FIG. 36A) is larger than the main peak in the spectrum of the second blue sub-ray V4f (see FIG. 36B). Wavelength (for example, 447 nm). The control unit 620f is used to change the ratio of the red sub-ray V1f, the green sub-ray V2f and the first blue sub-ray V3f, and the ratio of the red sub-ray V1f, the green sub-ray V2f, and the second blue sub-ray V4f. At least one of the blue light hazard, the circadian rhythm effect factor, and the color rendering index of one light ray VB1f and the second light ray VB2f.

In this embodiment, the light emitting module 610f includes a plurality of light emitters E1f, E2f, E3f, and E4f, and emits red sub-ray V1f, green sub-ray V2f, first blue sub-ray V3f, and second blue sub-ray, respectively. V4f. The light emitters E1f and E2f may each include at least one electroluminescent element, at least one photoluminescent element, at least one color filter, or a combination thereof. The electroluminescent element is, for example, a light emitting diode wafer or an organic light emitting diode, and the photoluminescent element is, for example, a phosphor. The light source device 600f may be a display, such as an organic light emitting diode display, a liquid crystal display, a micro light emitting diode display, or any other suitable display, and the light emitting module 610f may include a plurality of light emitters E1f, a plurality of light The emitters E2f, the plurality of light emitters E3f, and the plurality of light emitters E4f are alternately arranged to form a sub-pixel of the display. However, in other embodiments, the light source device 600f may be a lighting fixture.

In this embodiment, as shown in FIG. 37A and FIG. 37B, at the same x and y color coordinates and the same intensity, the circadian effect factor of the first ray VB1f is greater than the circadian effect factor of the second ray VB2f, so The user can select the first light VB1f or the second light VB2f according to the required circadian rhythm effect factor. In this embodiment, as shown in FIG. 38A, under the same blue light hazard, the color rendering index of the first light VB1f is greater than the color rendering index of the second light VB2f. Therefore, the user can use the required color rendering index to Select the first light VB1f or the second light VB2f. Furthermore, in this embodiment, under the same circadian rhythm factor, the blue light hazard of the first light VB1f is less than the blue light of the second light VB2f. Therefore, the user can select the first light according to the required blue light hazard VB1f or the second light VB2f.

In another embodiment, the light emitting module 610f of the light source device 600f may include a light emitter E1f, a light emitter E2f, and a light emitter E3f, which respectively provide a red sub-ray V1f, a green sub-ray V2f, and a first blue sub-ray V3f (ie blue sub-ray), but does not include the light emitter E4f. Further, the controller 620f is used to change the ratio of the red sub-ray V1f, the green sub-ray V2f and the first blue sub-ray V3f to form different white light (that is, in FIGS. 37A, 37B, 38A, and 38B , Respectively, the first rays VB1f) corresponding to different optical data. Furthermore, in this embodiment, the main peak wavelength in the spectrum of the first blue sub-ray V3f falls within a range of 460 nm to 480 nm. In this embodiment, the light source device 600f can provide the light B6f having a high circadian effect factor and a high color rendering index.

In another embodiment, the light emitting module 610f of the light source device 600f may include a light emitter E1f, a light emitter E2f, and a light emitter E4f, which respectively provide a red sub-ray V1f, a green sub-ray V2f, and a second blue sub-ray V4f (ie blue sub-ray), but does not include the light emitter E3f. Further, the controller 620f is used to change the ratio of the red sub-ray V1f, the green sub-ray V2f and the second blue sub-ray V4f to form different white lights (that is, in FIGS. 37A, 37B, 38A, and 38B , The second light rays VB2f) corresponding to different optical data, respectively. Furthermore, in this embodiment, the main peak wavelength in the spectrum of the second blue sub-ray V4f falls within a range of 440 nm to 450 nm. In this embodiment, the light source device 600f can provide the light B6f having a low circadian effect factor and a low color rendering index.

FIG. 39 is a schematic diagram illustrating a display device according to an embodiment of the disclosure. Referring to FIG. 39, the display device 900 of this embodiment includes a display 800 and a backlight element 701. The display 800 may be a liquid crystal display panel or other suitable spatial light modulator. The backlight element 701 may be any one of the light source devices mentioned above, and is used to illuminate the display 800.

FIG. 40 is a schematic diagram illustrating a light source device according to another embodiment of the present disclosure. FIG. 41A is a diagram illustrating a relationship between a sub-ray provided by a sub-light source of the first light source of FIG. 40 and a circadian effect factor of sunlight with respect to a correlated color temperature. 41B is a spectrum of a sub-ray emitted from the sub-light source of FIG. 40. 41C is a spectrum of Phosphor I, Phosphor II, Phosphor III, and Phosphor IV of the sub-light source of FIG. 40. 41D is a spectrum of a blue light-emitting diode wafer having peak wavelengths of 443 nm, 458 nm, and 461 nm in the sub-light source of FIG. 40. Referring to FIG. 40 to FIG. 41D, the light source device 700 of this embodiment is similar to the light source device 600c of FIG. 23, and the main differences therebetween are as follows. In this embodiment, the light source device 700 includes a first light source 710 for providing a first light B6g. In this embodiment, the first light source 710 includes a sub-light source E1g, a sub-light source E2g, a sub-light source E3g, and a sub-light source E4g. The sub-light source E1g includes a light emitter E11g and a light emitter E11g. The light emitter E12g, the sub-light source E2g includes a light emitter E21g and a light emitter E22g covering the light emitter E21g, and the sub-light source E3g includes a light emitter E31g and a light emitter covering the light emitter E31g. The light emitter E32g and the sub-light source E4g include a light emitter E41g and a light emitter E42g that covers the light emitter E41g. In this embodiment, the light emitter E11g is a blue light-emitting diode wafer having a peak wavelength of 458 nanometers, the light emitter E12g has a resin that accounts for 15% of the light emitter E12g, and the light emitter E12g. For 85% of the phosphors, the specific gravity of the phosphor of the light emitter E12g is 95% and that of the phosphor of the light emitter E12g is 5% of the phosphor II. The light emitter E21g is a blue light-emitting diode wafer having a peak wavelength of 461 nm. The light emitter E22g has a resin that accounts for 15% of the light emitter E22g and a phosphor that accounts for 85% of the light emitter E22g. 90% of the phosphor of the light emitter E22g is phosphor I, and 10% of the phosphor of the light emitter E22g is phosphor IV. The light emitter E31g is a blue light emitting diode wafer with a peak wavelength of 461 nm. The light emitter E32g has a resin that accounts for 12% of the light emitter E32g and a phosphor that accounts for 88% of the light emitter E32g. The specific gravity of the phosphor of the light emitter E32g is 95% of the phosphor I, and the specific gravity of the phosphor of the light emitter E32g is 5% of the phosphor IV. The light emitter E41g is a blue light emitting diode wafer with a peak wavelength of 443 nm. The light emitter E42g has a resin that accounts for 10% of the light emitter E42g and a phosphor that accounts for 90% of the light emitter E42g. The specific gravity of the phosphor of the light emitter E42g is 95% of the phosphor I, and the specific gravity of the phosphor of the light emitter E42g is 5% of the phosphor IV.

In this embodiment, the sub-light source E1g emits a sub-ray V1g, the sub-light source E2g emits a sub-ray V2g, the sub-light source E3g emits a sub-ray V3g, and the sub-light source E4g emits a sub-ray V4g. The sub-rays V1g, V2g, V3g, and V4g are, for example, white light, and the sub-rays V1g, V2g, V3g, and V4g are combined to form a first ray B6g.

However, in other embodiments, the sub-light sources E1g, E2g, E3g, and E4g may include a plurality of light-emitting diode chips having different light colors, such as a red light-emitting diode chip, a green light-emitting diode chip, and blue The light emitting diode chip is used to emit a red sub-ray, a green sub-ray and a blue sub-ray, which are combined to form white light. In other embodiments, the sub-light sources E1g, E2g, E3g, and E4g may include a plurality of light-emitting diode chips having different light colors and a plurality of light-emitting diodes having different light colors and covering at least one of the light-emitting diodes. Phosphor.

In this embodiment, the color rendering index of the first ray B6g is greater than 80, and the circadian rhythm factor of the sub-rays V1g, V2g, V3g, and V4g with respect to the coordinates of the correlated color temperature (CCT, CAF) is shown in FIG. 41A. The spectra of V1g, V2g, V3g, and V4g are shown in FIG. 41B, and the spectra of phosphors I, II, III, and IV are shown in FIG. 41C, which have blue peaks of 443 nm, 458 nm, and 461 nm, respectively. The spectrum of the color light emitting diode wafer is schematically shown in FIG. 41D.

In this embodiment, the light source device 700 further includes a control unit 720 electrically connected to the light emitters E11g, E21g, E31g, and E41g, and used to adjust the ratio of the sub-lights V1g, V2g, V3g, and V4g. Therefore, the coordinates of the circadian effect factor of the first ray B6g relative to the correlated color temperature (CCT, CAF) can be defined as the vertices of the circadian effect factor relative to the correlated color temperature defined by the sub-rays V1g, V2g, V3g, and V4g as the apex Any coordinates in the area A1 (for example, a polygon), the coordinates of the circadian rhythm of the sub-rays V1g, V2g, V3g, and V4g with respect to the correlated color temperature (CCT, CAF) are, for example, (2700 ± 100 K, 0.24 ), (2700 ± 100 K, 0.53), (6500 ± 300 K, 1.06) and (6500 ± 300 K, 0.788). However, in other embodiments, the first light source 710 may include a sub-light source that emits a sub-ray like the first light B6g, and by adjusting the composition of the phosphor of this sub-light source and the blue light-emitting diode chip Kind, the coordinate of the circadian effect factor of the first light B6g with respect to the correlated color temperature may be any coordinate falling in the area A1. Furthermore, in other embodiments, the first light source 710 may include two sub-light sources, three sub-light sources, or five or more sub-light sources, which emit sub-lights to form a first light B6g, and by adjusting these sub-lights The composition of the light source's phosphor and the type of the blue light-emitting diode chip. The coordinates of the circadian effect factor of the first light B6g with respect to the correlated color temperature (CCT, CAF) can be any coordinates falling in the area A1.

In this embodiment, the color rendering indexes of the sub-rays V1g, V2g, V3g, and V4g are, for example, 81, 81, 81, and 84, and the correlated color temperatures of the sub-rays V1g, V2g, V3g, and V4g are, for example, 2614 K and 2689 K, respectively. , 6691 K and 6245 K, the circadian effect factors of the sub-rays V1g, V2g, V3g, and V4g are, for example, 0.242, 0.534, 1.060, and 0.788, and the Duv values of the sub-rays V1g, V2g, V3g, and V4g are respectively 0.01,- 0.01, -0.00 and -0.01.

In this embodiment, the coordinates of the circadian effect factor of the first light B6g with respect to the correlated color temperature may fall at any position in the area A1, so the light source device 700 may meet various requirements for use.

FIG. 42 is a diagram illustrating a relationship between a sub-ray provided by a sub-light source of a first light source of a light source device according to another embodiment of the light source and a circadian rhythm factor of sunlight relative to a correlated color temperature. Referring to FIG. 42, the light source device according to this embodiment is similar to the light source device 700 of FIG. 40. The main differences therebetween are as follows. In this embodiment, the color rendering index of the first ray B6g is greater than 60, and the circadian effect factor of the first ray B6g with respect to the coordinates (CCT, CAF) of the correlated color temperature falls at (2700 ± 100 K, 0.696), (2700 ± 100 K, 0.197), (6500 ± 300 K, 0.759) and (6500 ± 300 K, 1.229). Within area A2. In the present embodiment, the first light ray B6 is formed by four sub-rays having the coordinates of the circadian rhythm factor relative to the correlated color temperature at the four apexes shown in FIG. 42. However, in other embodiments, the first ray B6g may be a sub-ray, two sub-rays, or three or more sub-rays emitted by one sub-light source, two sub-light sources, or three or more sub-light sources. The coordinate of the formed circadian rhythm factor of the first light B6g with respect to the correlated color temperature can be determined by adjusting the composition of the phosphor and the type of the blue light emitting diode chip of the sub-light source.

FIG. 43 is a diagram illustrating a relationship between a sub-ray provided by a sub-light source of a first light source of a light source device according to another embodiment of the light source and a circadian effect factor of sunlight with respect to a correlated color temperature. Referring to FIG. 43, the light source device according to this embodiment is similar to the light source device 700 of FIG. 40, and the main differences therebetween are as follows. In this embodiment, the color rendering index of the first light B6g is not limited, and the circadian effect factor of the first light B6g with respect to the coordinates (CCT, CAF) of the correlated color temperature falls as shown in FIG. 43 ( 2700 ± 100 K, 0.197), (2700 ± 100 K, 0.696), (4500 ± 200 K, 0.474), (4500 ± 200 K, 1.348), (6500 ± 300 K, 0.759), and (6500 ± 300 K, 1.604) The six circadian effect factors are within an area A3 formed by the vertices with respect to the coordinates of the correlated color temperature. However, in other embodiments, the first light ray B6g may be generated by one sub-light source, two sub-light sources, or one sub-light, two sub-lights, or three or more sub-lights emitted by three or more sub-light sources. The coordinate of the circadian rhythm factor of the first light B6g with respect to the correlated color temperature can be determined by adjusting the composition of the phosphor and the type of the blue light emitting diode chip of the sub-light source.

FIG. 44 is an upper and lower boundary of the circadian effect factor of the sub-ray provided by the sub-light source of the first light source of the light source device according to another embodiment of the present disclosure with respect to the upper and lower boundaries of the correlated color temperature and the relative effect of the circadian rhythm of the sunlight A graph of the correlated color temperature. Please refer to FIG. 44. The light source device of the embodiment of FIG. 44 is similar to the light source device of the embodiment of FIG. 43. The main differences therebetween are as follows. In this embodiment, the circadian effect factor of the first ray B6g falls within a region with respect to the coordinates (CCT, CAF) of the correlated color temperature, and this region has an upper boundary, a lower boundary, and an upper boundary and a lower boundary. Coordinates. In this embodiment, the upper boundary is established by fitting a quadratic function to the upper three vertices in FIG. 43, and its coefficient of determination R ^{2 is,} for example, 1. For example, the upper boundary is a function: CAF = -5E-08 × (CCT) ² + 0.0007 × (CCT)-0.8439. Furthermore, the lower boundary is established by fitting a quadratic function to the lower three vertices in FIG. 43, and the determination coefficient R ^{2 is,} for example, 1. For example, the lower boundary is a function: CAF = -8E-09 × (CCT) ² + 0.0002 × (CCT)-0.3804.

FIG. 45 is a diagram illustrating a relationship between a sub-ray provided by a sub-light source of a first light source of a light source device according to another embodiment of the light source and a circadian effect factor of sunlight with respect to a correlated color temperature. Referring to FIG. 45, the light source device according to this embodiment is similar to the light source device 700 of FIG. 40, and the main differences therebetween are as follows. In this embodiment, the color rendering index of the first ray B6g is greater than 80, and the circadian effect factor of the first ray B6g with respect to the coordinates (CCT, CAF) of the correlated color temperature falls at (2700) as shown in FIG. 45, respectively. (± 100 K, 0.242), (2700 ± 100 K, 0.534), (4500 ± 200 K, 0.580), (4500 ± 200 K, 0.841), (6500 ± 300 K, 0.788), and (6500 ± 300 K, 1.060 The coordinates of the six circadian rhythm factor) relative to the correlated color temperature are a region A4 formed by the apex. However, in other embodiments, the first light ray B6g may be generated by one sub-light source, two sub-light sources, or one sub-light, two sub-lights, or three or more sub-lights emitted by three or more sub-light sources. The coordinate of the circadian rhythm factor of the first light B6g with respect to the correlated color temperature can be determined by adjusting the composition of the phosphor and the type of the blue light emitting diode chip of the sub-light source.

In this embodiment, at the same correlated color temperature, the circadian effect factor of the first light B6g falls within a range of ± 0.15 of the circadian effect factor of sunlight.

FIG. 46 is a diagram illustrating a relationship between a sub-ray provided by a sub-light source of a first light source of a light source device according to another embodiment of the light source and a circadian rhythm factor of sunlight relative to a correlated color temperature. Referring to FIG. 46, the light source device according to this embodiment is similar to the light source device of FIG. 45, and the main differences therebetween are as follows. In this embodiment, the color rendering index of the first light B6g is greater than 60, and the circadian effect factor of the first light B6 relative to the correlated color temperature (CCT, CAF) falls on the six circadian rhythms shown in FIG. 46 The coordinates of the action factor relative to the correlated color temperature are within a range of an area A5 formed by the apex. In this embodiment, the first light ray B6 is formed by six sub-rays each having a circadian effect factor at six vertices shown in FIG. 46 with respect to the coordinates of the correlated color temperature. However, in other embodiments, the first light ray B6g may be generated by one sub-light source, two sub-light sources, or one sub-light, two sub-lights, or three or more sub-lights emitted by three or more sub-light sources. The coordinate of the circadian rhythm factor of the first light B6g with respect to the correlated color temperature can be determined by adjusting the composition of the phosphor and the type of the blue light emitting diode chip of the sub-light source.

Please refer to FIG. 23 again. In an embodiment, the light emitter E1c may be the first light source 710 in any one of FIGS. 40 to 46, and the first sub-ray V1c may be any one in FIG. 40 to FIG. 46. In one embodiment, the first light beam B6g, the light emitter E2c may be a second light source, and the second sub-ray V2c may be a second light. The second light source is similar to the first light source 710, and the circadian effect factor of the second light relative to the correlated color temperature (CCT, CAF) may fall in the area A1 in FIG. 41A, the area A2 in FIG. 42, and the area A3 in FIG. 43. , Area A4 in FIG. 45, or area A5 in FIG. 46, or the area defined by the upper and lower boundaries of FIG. 44, the difference is that the circadian effect factor of the second ray relative to the coordinate of the correlated color temperature (CCT (CAF) and the first light B6g have different circadian rhythm factor (CCT, CAF) coordinates relative to the correlated color temperature.

Further, in this embodiment, the control unit 620c is used to control the first light source 710 (ie, the light emitter E1c) and the second light source (ie, the light emitter E2c), and is used to combine the first light B6g (ie, the first sub-light). The light ray V1c) and the second light ray (the second sub-ray V2c) output a third light ray (ie, the light ray B6c).

In this embodiment, as shown in FIG. 25A, the circadian rhythm factor of one of the first ray B6g (that is, the first sub-ray V1c) and the second ray (that is, the second sub-ray V2c) is relative to the coordinate of the correlated color temperature (CCT). , CAF) falls below the trajectory of the circadian effect factor of sunlight with respect to the correlated color temperature, and as shown in FIG. 25A, the first ray B6g (that is, the first sub-ray V1c) and the second ray (that is, the second sub-ray V2c) Another coordinate of the circadian effect factor relative to the correlated color temperature (CCT, CAF) falls above the trajectory of the solar circadian effect factor relative to the correlated color temperature.

In an embodiment, the coordinate of the circadian effect factor with respect to the correlated color temperature (CCT, CAF) of the third light (ie, the light B6c) falls below the trajectory of the circadian effect factor of the sunlight with respect to the correlated color temperature, for example, is FIG. 25A is a circle or triangle below the trajectory of the circadian effect factor of sunlight with respect to the correlated color temperature. In another embodiment, the coordinate of the circadian effect factor of the third light (ie, light B6c) relative to the correlated color temperature is above the trajectory of the circadian effect factor of the sunlight relative to the correlated color temperature, for example, FIG. 25A The circle or triangle above the circadian effect factor of light relative to the trace of the correlated color temperature. In another embodiment, the coordinates of the circadian effect factor of the third light (ie, light B6c) relative to the correlated color temperature are located on the locus of the circadian effect factor of the sunlight relative to the correlated color temperature, for example, FIG. 25A The circadian effect factor is a circle or triangle on the trajectory of the relative color temperature.

The above-mentioned control unit includes, for example, a central processing unit (CPU), a microprocessor, a digital signal processor (DSP), a programmable controller, and a programmable logic device. logic device (PLD) or other similar devices or combinations of these devices, this disclosure is not limited. In addition, in one embodiment, each function of the control unit can be implemented as multiple codes. These codes are stored in a memory and are executed by the control unit. Alternatively, in one embodiment, the functions of the control unit may be implemented as one or more circuits. This disclosure does not limit the implementation of the functions of the control unit in software or hardware.

The aforementioned "physiological stimulation value" may be the aforementioned CS / P value, the circadian rhythm effect factor (CAF), or the equivalent melanin lux (EML), where EML = R × (CAF) × (Lux), where: R is a constant. When the response strengths of CS (λ) and P (λ) are considered, R = 1.218. When the light source device is a lighting device, Lux may be an illuminance, and when the light source device is a display, Lux may be a luminance. The CS / P value in the above embodiment may be replaced by a circadian effect factor or an equivalent melanin lux. The circadian effect factor in the above embodiment may be replaced with a CS / P value or an equivalent melanin lux.

In summary, the light source device in the embodiment of the present disclosure can control the light emitting module to provide light with the same color temperature and different physiological stimulation values through the control unit. The light-emitting module can also provide multiple groups of light with different color temperatures by using multiple groups of light-emitting units, and each group of lights with the same color temperature can be switched between different physiological stimulation values. In addition, the light source device in the embodiment of the present disclosure can also control the light emitting module to provide light with a physiological stimulation value difference of more than 5% through the control unit, and these lights may have completely different color temperatures, or a part of these light color temperatures the same. In this way, the light source device can choose to provide light sources with different physiological stimulation values according to the actual use environment, time and purpose, so as to maintain the user's natural physiological cycle and provide sufficient light sources at the same time. The light source device disclosed in the present disclosure may be a lighting device used for lighting or a backlight device used as a backlight of a display, but is not limited thereto.

In addition, in the light source device according to this embodiment, because the color temperatures of the first light and the second light are substantially the same as each other and the spectra of the first light and the second light are different, when multiple light source devices or light emitting modules are used for the same The display space emits the first light and the second light respectively, and the colors of the light of the light source device or the light emitting module are consistent, and the first light and the second light may achieve different effects respectively.

In addition, in the light source device according to this embodiment, because the correlated color temperatures of the plurality of first light rays are different from each other, and the circadian effect factors of the plurality of first light rays are substantially the same as each other, the light source device may have more applications.

In addition, in the light source device according to the embodiment, the ratio of the first sub-ray to the second sub-ray may be changed, so the circadian effect factor and the correlated color temperature of the light may be along the circadian rhythm different from that of the sunlight. The circadian rhythm of the action factor with respect to the ray of the correlated color temperature trajectory changes the factor with respect to the track of the correlated color temperature, so the light source device can have more applications. In the light source device according to the embodiment, the light can be switched between the first light and the second light, so at least one of the blue light hazard and the circadian effect factor of the light can be changed, so the light source device can have more application. In the light source device according to this embodiment, the ratio of the first sub-ray to the second sub-ray can be changed, so the correlated color temperature and blue light hazard of the light can be changed. Among the same correlated color temperature, the blue light hazard of the light is Variable, so users can choose the appropriate blue light hazard according to their needs.

Furthermore, in the light source device according to the embodiment, the coordinates of the circadian rhythm effect factor with respect to the correlated color temperature of the first light emitted by the first light source may fall within a region of the circadian rhythm effect factor with respect to the correlated color temperature graph. Arbitrary positions, so the light source device according to the embodiment can meet various usage needs.

Although the present disclosure has been disclosed as above by way of example, it is not intended to limit the present disclosure. Any person with ordinary knowledge in the technical field can make some changes and decorations without departing from the spirit and scope of the present disclosure. The scope of protection of this disclosure shall be determined by the scope of the appended patent application.

100, 100a, 100b, 100 ’, 300, 400, 500, 600, 600a, 600b, 600c, 600d, 600e‧‧‧ light source device

110, 110a, 110b, 310, 410, 510, 610, 610a, 610b, 610c, 610d, 610f

120, 320, 420, 520, 620, 620c, 620f, 720‧‧‧ control units

130‧‧‧user interface

140‧‧‧Interface

700‧‧‧light source device

701‧‧‧ backlight

710‧‧‧first light source

800‧‧‧ Display

900‧‧‧ display device

A1, A2, A3, A4, A5‧‧‧ area

B, B3, B6, B6c, B6d, B6e, B6f‧‧‧ Light

B6g‧‧‧First Light

D‧‧‧light-emitting unit

D1, D1 ’, D11, D12, D13‧‧‧first light emitting unit

D2, D2’‧‧‧Second light emitting unit

D3, D3 ’, D31, D32‧‧‧th third light emitting unit

D4, D4’‧‧‧ Fourth light-emitting unit

D5, D5’‧‧‧ fifth light-emitting unit

D6’‧‧‧The sixth light-emitting unit

D7’‧‧‧The seventh light-emitting unit

D8’‧‧‧Eighth light-emitting unit

DM‧‧‧Light source driver module

DR‧‧‧Data writing system

DT‧‧‧Time Management Information

E1, E1a, E12a, E11a, E1c, E1f, E2c, E2a, E2a, E2f, E3, E3a, E3d, E3f, E4, E4a, E4e, E4f, E5a, E6a, E7a, E11g, E12g, E21g, E22g, E31g, E32g, E41, E41g, E42, E42g

E1g, E2g, E3g, E4g ‧‧‧ sub-light sources

e1, e2, e3, e4, e5, e6, e7, e8‧‧‧ ellipse color temperature range

L1, L1 ’, L13, L14, L15, VB1f‧‧‧ first light

L2, L2 ’, L23, L24, L25, VB2f‧‧‧Second light

L35‧‧‧ Third Light

L45‧‧‧ Fourth light

L55‧‧‧ fifth light

L65‧‧‧ sixth light

L75‧‧‧ seventh light

L85‧‧‧ Eighth light

P1, P1 ’, P13, P14 ‧‧‧ Part I

P2, P2 ’, P23, P24‧‧‧ Part II

S1, S2, S3, S4, S5, S6, S7, S8‧‧‧ Tolerance quadrilateral color temperature range

Q1, Q2, Q3, Q4‧‧‧ vertices

SH1, SL1‧‧‧Spectral curve

SV‧‧‧Storage Unit

UR‧‧‧User

V1, V1a, V1g, V2g, V3g, V4g, V11a, V12a, V2, V2a, V3, V3a, V4, V4a, V41, V42, V5a, V6a, V7a ...

V1c, W1, W1’‧‧‧‧ the first sub-ray

V1f‧‧‧Red sub-ray

V2c, W2, W2’‧‧‧‧ second child light

V2f‧‧‧Green Child Ray

V3d, W3, W3 ’‧‧‧ third sub-ray

V3f‧‧‧The first blue sub-ray

V4e, W4, W4’‧‧‧ Fourth child light

V4f‧‧‧The second blue sub-ray

W5, W5’‧‧‧ fifth fifth light

W6’‧‧‧ Sixth Child Ray

W7’‧‧‧ Seventh Child Ray

W8’‧‧‧ Eighth Child Ray

FIG. 1 illustrates a curve corresponding to a light source and a physiological stimulus. FIG. 2A is a schematic diagram of a light source device according to an embodiment of the disclosure. FIG. 2B is a variation of the light source device according to the embodiment of FIG. 2A. FIG. 2C is a schematic spectrum diagram of relative light intensity and light wavelength of light emitted by the light source device according to the embodiment shown in FIG. 2B. FIG. 2D illustrates a timing diagram of the light source device in the embodiment of FIG. 2B having different lighting modes in different periods. FIG. 2E is a block diagram of the light source device according to FIG. 2A. FIG. 3 is a schematic diagram of a color coordinate type with the same color temperature as defined by the American National Standards Institute. FIG. 4A is a schematic diagram of a light source device in another embodiment of the disclosure. FIG. 4B illustrates a spectrum curve of the first light in the embodiment of FIG. 4A. FIG. 4C illustrates a spectrum curve of the second light in the embodiment of FIG. 4A. FIG. 4D illustrates a timing diagram of the light source device in the embodiment of FIG. 4A having different lighting modes in different periods. FIG. 5A is a schematic diagram of a light source device in another embodiment of the disclosure. FIG. 5B illustrates a spectrum curve of the first light in the embodiment in FIG. 5A. FIG. 5C illustrates a spectrum curve of the second light in the embodiment of FIG. 5A. FIG. 5D illustrates a timing diagram of the light source device in the embodiment of FIG. 5A having different lighting modes in different periods. FIG. 6A is a schematic diagram of a light source device in still another embodiment of the disclosure. 6B to FIG. 6I illustrate spectral curves of light provided by the light source device 500 under each color temperature condition. FIG. 6J illustrates a timing diagram of the light source device in the embodiment of FIG. 6A having different lighting modes in different periods. FIG. 7 is a schematic diagram of a light source device according to another embodiment of the disclosure. FIG. 8A illustrates the spectrum of the light emitted from the light emitting unit and the first light in the first light emitting mode in FIG. 7 respectively. FIG. 8B illustrates the spectrum of the light and the second light emitted from the light emitting unit in the second light emitting mode in FIG. 7 respectively. FIG. 9 illustrates the color coordinates of the first light ray and the second light ray in the CIE 1976 u'-v 'diagram (CIE 1976 u'-v' diagram). FIG. 10 is a schematic diagram of a light source device according to another embodiment of the disclosure. FIG. 11A illustrates the spectrum of the light emitted from the light emitting unit and the first light in the first light emitting mode in FIG. 10 respectively. FIG. 11B illustrates the spectrum of the light emitted from the light emitting unit and the second light in the second light emitting mode in FIG. 10 respectively. FIG. 12 illustrates the color coordinates of the first ray and the second ray in FIG. 10 in the CIE 1976 u'-v 'diagram. FIG. 13A illustrates a spectrum of light emitted from the light-emitting unit and the first light in the first light-emitting mode in FIG. 10 according to another embodiment of the disclosure. FIG. 13B illustrates a spectrum of light emitted from the light-emitting unit and the second light in the second light-emitting mode in FIG. 10 according to another embodiment of the disclosure. FIG. 14 is a diagram illustrating the color coordinates of the first light ray and the second light ray in the CIE 1976 u'-v 'diagram according to another embodiment of the present disclosure. FIG. 15 is a schematic diagram of a light source device according to another embodiment of the disclosure. FIG. 16A is a spectrum of sub-rays emitted from the light emitter of FIG. 15. FIG. 16B is a diagram showing the relationship between the circadian effect factor and the correlated color temperature of the light emitted by the light emitting module of FIG. 15. FIG. 16C is a relationship diagram of the color rendering index of the light emitted by the light emitting module of FIG. 15 with respect to the correlated color temperature. FIG. 16D is a graph showing the relationship between the circadian effect factor of sunlight and the correlated color temperature. FIG. 17 is a schematic diagram of a light source device according to another embodiment of the disclosure. FIG. 18A is a spectrum of sub-rays emitted from the light emitter of FIG. 17. FIG. 18B is a relationship diagram of the circadian factor of the light emitted by the light emitting module of FIG. 17 with respect to the correlated color temperature. FIG. 18C is a graph showing the relationship between the color rendering index of the light emitted from the light emitting element of FIG. 17 and the correlated color temperature. 19A to 19D are diagrams showing the relationship between the circadian factor of the light emitted from the light emitting module of FIG. 17 and the correlated color temperature when the color rendering index is greater than 80, 90, 93, and 95, respectively. FIG. 20 is a schematic diagram illustrating a light source device according to another embodiment of the present disclosure. FIG. 21A is a spectrum of sub-rays emitted from the light emitter of FIG. 20. FIG. 21B is a graph of the relationship between the circadian factor and the correlated color temperature of the light emitted by the light-emitting module of FIG. 20. FIG. 21C is a relationship diagram of the color rendering index of the light emitted by the light emitting module of FIG. 20 with respect to the correlated color temperature. 22A and 22B are diagrams showing the relationship between the circadian rhythm factor of the light emitted from the light emitting module of FIG. 20 and the correlated color temperature when the color rendering index is greater than 80 and 90, respectively. FIG. 23 is a schematic diagram illustrating a light source device according to another embodiment of the disclosure. 24A to 24D are spectra of sub-rays emitted from the light emitters of the four embodiments of FIG. 23. 25A and 25B are diagrams showing the relationship between the circadian effect factor of the light emitted by the light emitting module of FIG. 23 and the sunlight and the relative color temperature. FIG. 26 is a schematic diagram illustrating a light source device according to another embodiment of the disclosure. 27A and 27B are spectrums of sub-rays emitted from the light emitters of the two embodiments of FIG. 26. 28A and 28B are diagrams showing the relationship between the circadian effect factor of the light emitted by the light emitting module of FIG. 26 and the sunlight and the relative color temperature. FIG. 29 is a schematic diagram illustrating a light source device according to another embodiment of the disclosure. FIG. 30 is a spectrum of the sub-rays emitted from the light emitter of FIG. 29. FIG. 31 is a relationship diagram of the circadian rhythm factor of the light emitted by the light emitting module of FIG. 29 and the sunlight with respect to the correlated color temperature. FIG. 32 is a spectrum of sub-rays emitted from a light emitter according to another embodiment of FIG. 23. FIG. 33 is a relationship diagram of the color rendering index of the light emitted by the light emitting module according to the embodiment of FIG. 32 with respect to the correlated color temperature. FIG. 34A is a relationship diagram of the blue light hazard relative to the correlated color temperature of the light emitted by the light emitting module in the embodiment of FIG. 32 when the correlated color temperature is greater than 5000 K. FIG. FIG. 34B is a relationship diagram of the blue light hazard relative to the color rendering index of the light emitted by the light emitting module in the embodiment of FIG. 32 when the correlated color temperature is greater than 5000 K. FIG. FIG. 35 is a schematic diagram illustrating a light source device according to another embodiment of the disclosure. 36A is a spectrum of red sub-rays V1f, green sub-rays V2f, and first blue sub-rays V3f emitted by the light emitters E1f, E2f, and E3f of FIG. 35. FIG. 36B is a spectrum of the red sub-ray V1f, the green sub-ray V2f, and the second blue sub-ray V4f emitted by the light emitters E1f, E2f, and E4f of FIG. 35. FIG. 37A is a diagram of the relationship between the circadian rhythm factor of the first light ray VB1f and the second light ray VB2f from the light emitters E1f, E2f, and E3f and the light emitters E1f, E2f, and E4f, respectively, with respect to the x-color coordinates. FIG. 37B is a diagram of the relationship between the circadian rhythm factor of the first light ray VB1f and the second light ray VB2f emitted from the light emitters E1f, E2f, and E3f and the light emitters E1f, E2f, and E4f with respect to the y-color coordinates, respectively. FIG. 38A is a relationship diagram of the blue light hazards of the first light rays VB1f and the second light rays VB2f emitted from the light emitters E1f, E2f, and E3f and the light emitters E1f, E2f, and E4f with respect to the color rendering index, respectively. FIG. 38B is a relationship diagram of the blue light hazards of the first light rays VB1f and the second light rays VB2f emitted from the light emitters E1f, E2f, and E3f and the light emitters E1f, E2f, and E4f with respect to the circadian effect factor, respectively. FIG. 39 is a schematic diagram illustrating a display device according to an embodiment of the disclosure. FIG. 40 is a schematic diagram illustrating a light source device according to another embodiment of the present disclosure. FIG. 41A is a diagram illustrating a relationship between a sub-ray provided by a sub-light source of the first light source of FIG. 40 and a circadian effect factor of sunlight with respect to a correlated color temperature. 41B is a spectrum of a sub-ray emitted from the sub-light source of FIG. 40. 41C is a spectrum of Phosphor I, Phosphor II, Phosphor III, and Phosphor IV of the sub-light source of FIG. 40. 41D is a spectrum of a blue light-emitting diode wafer having peak wavelengths of 443 nm, 458 nm, and 461 nm in the sub-light source of FIG. 40. FIG. 42 is a diagram illustrating a relationship between a sub-ray provided by a sub-light source of a first light source of a light source device according to another embodiment of the light source and a circadian rhythm factor of sunlight relative to a correlated color temperature. FIG. 43 is a diagram illustrating a relationship between a sub-ray provided by a sub-light source of a first light source of a light source device according to another embodiment of the light source and a circadian effect factor of sunlight with respect to a correlated color temperature. FIG. 44 is an upper and lower boundary of the circadian effect factor of the sub-ray provided by the sub-light source of the first light source of the light source device according to another embodiment of the present disclosure with respect to the upper and lower boundaries of the correlated color temperature and the relative factor of the circadian effect of sunlight A graph of the correlated color temperature. FIG. 45 is a diagram illustrating a relationship between a sub-ray provided by a sub-light source of a first light source of a light source device according to another embodiment of the light source and a circadian effect factor of sunlight with respect to a correlated color temperature. FIG. 46 is a diagram illustrating a relationship between a sub-ray provided by a sub-light source of a first light source of a light source device according to another embodiment of the light source and a circadian rhythm factor of sunlight relative to a correlated color temperature.

Claims (42)

A light source device includes: a light-emitting module for providing a light; and a control unit for switching the light emitted by the light-emitting module between a plurality of first lights, wherein the correlated color temperatures of the plurality of first lights are relative to each other. They are different, and the physiological stimulation values of the plurality of types of first light rays are substantially the same as each other. According to the light source device described in item 1 of the patent application scope, the Duv values of the plurality of first light rays are all less than 0.005. The light source device according to item 1 of the scope of patent application, wherein the control unit also causes the light emitted by the light-emitting module to switch between a plurality of second lights, wherein the correlated color temperatures of the plurality of second lights are different from each other, and The color rendering indexes of the plurality of types of second light rays are substantially the same as each other. According to the light source device described in item 3 of the patent application scope, the Duv values of the plurality of second light rays are all less than 0.005. According to the light source device described in item 1 of the scope of the patent application, wherein the control unit also causes the light emitted by the light-emitting module to switch among a plurality of third lights, wherein the correlated color temperatures of the plurality of third lights are substantially the same as each other, And the color rendering indexes or physiological stimulation values of the plurality of third light rays are different from each other. The light source device according to item 5 of the scope of patent application, wherein the Duv value of the plurality of third light rays is less than 0.005. The light source device according to item 5 of the scope of patent application, wherein the light-emitting module includes a plurality of light emitters, each of which emits a plurality of sub-rays having different wavelength ranges, and the sub-lights constitute a light source provided by the light-emitting module. For the light, the light emitted by the light emitting module is switched between the plurality of first lights and the plurality of third lights by changing the ratio of the sub-lights. The light source device according to item 1 of the scope of patent application, wherein the control unit also causes the light emitted by the light-emitting module to switch among a plurality of fourth rays, and the physiological stimulation values of the plurality of fourth rays include or are substantially the same The physiological stimulus value of sunlight in a correlated color temperature range. The light source device according to item 8 of the scope of patent application, wherein the correlated color temperature range includes a range from 3000 K to 6500 K. The light source device according to item 9 of the scope of the patent application, wherein the color rendering index of the plurality of fourth rays is greater than 80. The light source device according to item 8 of the scope of the patent application, wherein the Duv values of the plurality of fourth light rays are all less than 0.005. The light source device according to item 8 of the scope of patent application, wherein the light-emitting module includes a plurality of light emitters, each emitting a plurality of sub-rays having different wavelength ranges, and the sub-lights constitute a light source provided by the light-emitting module. The light, the light emitted by the light emitting module is switched between the plurality of first lights and the plurality of fourth lights by changing the ratio of the sub-lights. The light source device according to item 1 of the scope of patent application, wherein the light-emitting module includes a plurality of light emitters, each of which emits a plurality of sub-rays having different wavelength ranges, and the sub-lights constitute a part provided by the light-emitting module. Of that light. The light source device according to item 13 of the application, wherein the light emitter includes an electroluminescent element, a photoluminescent element, or a combination thereof. The light source device according to item 14 of the scope of patent application, wherein the electroluminescent element is a light emitting diode wafer, and the photoluminescent element is a phosphor. The light source device according to item 13 of the scope of patent application, wherein the light emitted by the light-emitting module is switched between the plurality of first lights by changing the ratio of the sub-lights. The light source device according to item 16 of the scope of patent application, wherein the proportion of the sub-rays is changed by the pulse width modulation of the light emitters. The light source device according to item 13 of the scope of patent application, wherein the light emitters include a plurality of light emitting diode wafers, and each of the sub-lights emitted by the light emitting diode wafers The full width at half maximum is less than 40 nm. The light source device according to item 13 of the scope of patent application, wherein the sub-lights are visible light. A light source device includes: a light emitting module for providing a light; and a control unit for switching the light between a first light and a second light, thereby changing the blue light hazard and physiological stimulation of the light At least one of the values, wherein the main wavelength of the blue light peak in the spectrum of the first light is greater than the main wavelength of the blue light in the spectrum of the second light. The light source device according to item 20 of the application, wherein the first light includes a red light, a green light, and a first blue light, and the second light includes the red light, the green light, and the green light. Light and a second blue sub-ray, the wavelength of the main peak in the spectrum of the first blue sub-ray is greater than the wavelength of the main peak in the spectrum of the second blue sub-ray, and the control unit is configured to change the The ratio of the red sub-ray, the green sub-ray, and the first blue sub-ray, and the ratio of the red sub-ray, the green sub-ray, and the second blue sub-ray are changed, so the first light and the second sub-ray are changed. At least one of blue light hazard, physiological stimulus value, and color rendering index of light. The light source device according to item 21 of the scope of patent application, wherein the physiological stimulus value of the first light is greater than the physiological stimulus value of the second light under the same x and y color coordinates and the same intensity. The light source device according to item 21 of the scope of patent application, wherein under the same blue light hazard, the color rendering index of the first light is greater than the color rendering index of the second light. The light source device according to item 21 of the scope of patent application, wherein under the same physiological stimulus value, the blue light hazard of the first light is less than the blue light hazard of the second light. A display device includes: a display; and a backlight element for illuminating the display, and including: a first light emitting diode light source; and a second light emitting diode light source, wherein the first light emitting diode The polar light source and the second light-emitting diode light source are configured to be operated in a first operation mode for emitting a first light and are configured to be operated in a second operation for emitting a second light Mode, the first light ray and the second light ray fall within an identical Macadam ellipse of a target correlated color temperature, and the physiological stimulus value of the first light ray is greater than the physiological stimulus value of the second light ray by the second ray More than 5% of the physiological stimulation value. The display device according to item 25 of the scope of patent application, wherein the backlight element further includes a control unit for enabling the first light-emitting diode light source and the second light-emitting diode light source in the first operation mode and Switch between the second operating modes. A light source device includes: a first light source for providing a first light, wherein a circadian effect factor of the first light relative to a coordinate of a correlated color temperature (CCT, CAF) falls at (2700 ± 100 K, 0.197) ), (2700 ± 100 K, 0.696), (4500 ± 200 K, 0.474), (4500 ± 200 K, 1.348), (6500 ± 300 K, 0.759), and (6500 ± 300 K, 1.604) for six days and nights The coordinates of the rhythm effect factor relative to the correlated color temperature are within a first region formed by the apex. The light source device according to item 27 of the scope of the patent application, wherein the color rendering index of the first light is greater than 60, and the circadian effect factor of the first light relative to the coordinates of the correlated color temperature (CCT, CAF) falls in ( The coordinates of the four circadian rhythm factors of 2700 ± 100 K, 0.696), (2700 ± 100 K, 0.197), (6500 ± 300 K, 0.759), and (6500 ± 300 K, 1.229) relative to the correlated color temperature are at the apex. Within a second region. The light source device according to item 27 of the scope of patent application, further comprising: a second light source for providing a second light, wherein the circadian rhythm factor of the second light is relative to the coordinates of the correlated color temperature (CCT, CAF) Coordinates (CCT, CAF) of the circadian effect factor relative to the correlated color temperature that fall within the first region and are different from the first light source. The light source device according to item 29 of the scope of patent application, further comprising: a control unit for controlling the first light source and the second light source to combine the first light and the second light to output a third light . The light source device as described in claim 30, wherein the circadian effect factor of the third light ray relative to the coordinate of the correlated color temperature (CCT, CAF) falls on the trajectory of the circadian effect factor of the sunlight relative to the trajectory of the correlated color temperature. Below. The light source device as described in claim 30, wherein the circadian effect factor of the third light ray relative to the coordinate of the correlated color temperature (CCT, CAF) falls on the trajectory of the circadian effect factor of the sunlight relative to the trajectory of the correlated color temperature. Up. The light source device as described in claim 30, wherein the coordinate of the circadian effect factor of the third light relative to the correlated color temperature (CCT, CAF) falls on the locus of the circadian effect factor of the sunlight relative to the correlated color temperature. . The light source device according to item 29 of the scope of patent application, wherein the circadian effect factor of one of the first light and the second light falls on the circadian effect factor of the sunlight relative to the coordinate (CCT, CAF) of the correlated color temperature Below the trajectory of the correlated color temperature, and the other circadian rhythm factor of the first ray and the second ray relative to the correlated color temperature is located on the trajectory of the circadian rhythm factor of the sunlight relative to the trajectory of the correlated color temperature Up. The light source device according to item 27 of the scope of the patent application, wherein the color rendering index of the first light is greater than 80, and the circadian effect factor of the first light relative to the coordinates of the correlated color temperature (CCT, CAF) falls in ( 2700 ± 100 K, 0.242), (2700 ± 100 K, 0.534), (4500 ± 200 K, 0.580), (4500 ± 200 K, 0.841), (6500 ± 300 K, 0.788), and (6500 ± 300 K, 1.060) in a third region formed by the vertices of the six circadian interaction factors with respect to the coordinates of the correlated color temperature. A light source device includes: a light-emitting module for providing a light; and a control unit for changing a ratio of a first sub-light to a second sub-light to form the light, so the circadian effect of the light The factor and the correlated color temperature vary along the circadian effect factor of the ray that is different from the trajectory of the relative color temperature of the light relative to the trajectory of the correlated color temperature. The coordinates of the circadian effect factor of one of the rays with respect to the correlated color temperature are below the trajectory of the circadian effect factor of the sunlight with respect to the correlated color temperature, and the other circadian of the first sub-ray and the second sub-ray The coordinates of the rhythm effect factor relative to the correlated color temperature are above the trajectory of the circadian rhythm effect factor of the sunlight relative to the correlated color temperature. The light source device according to item 36 of the scope of patent application, wherein the control unit is configured to change a ratio of the first sub-ray, the second sub-ray, a third sub-ray, and a fourth sub-ray to form the light, Therefore, the coordinates of the circadian rhythm effect factor of the light relative to the correlated color temperature are relative to the correlated color temperature of the circadian rhythm effect factor having the first sub-ray, the second sub-ray, the third sub-ray, and the fourth sub-ray, respectively. The coordinates of the four vertices change within a region. The light source device according to item 37 of the scope of patent application, wherein the correlated color temperature of the first sub-ray is less than the correlated color temperature of the second sub-ray and is less than the correlated color temperature of the fourth sub-ray, and the correlated color temperature of the third sub-ray Coordinates of the circadian rhythm effect factors of the first sub-ray and the third sub-ray relative to the correlated color temperature fall respectively on the day and night of the sunlight The two sides of the rhythm effect factor relative to the trajectory of the correlated color temperature, and the coordinates of the circadian rhythm effect factor of the second sub-ray and the fourth sub-ray relative to the correlated color temperature respectively fall on the circadian effect factor of the sunlight The opposite sides of the trace of correlated color temperature. The light source device according to item 36 of the application, wherein the first sub-light and the second sub-light are white light. A light source device includes: a first light source for providing a first light, wherein a circadian effect factor of the first light falls within an area with respect to coordinates (CCT, CAF) of a correlated color temperature, and the area has a Coordinates of the upper boundary, the lower boundary, and the circadian rhythm factor between the upper and lower boundaries with respect to the correlated color temperature, where the circadian rhythm factor with respect to the coordinates of the correlated color temperature (2700 ± 100 K, 0.696), (4500 ± 200 K, 1.348) and (6500 ± 300 K, 1.604) are located on this upper boundary, and the circadian rhythm factor relative to the correlated color temperature coordinates (2700 ± 100 K, 0.197), (4500 ± 200 K, 0.474), and ( 6500 ± 300 K, 0.759) lies on this lower boundary. The light source device according to item 40 of the application, wherein the upper boundary and the lower boundary are each a quadratic function. The light source device according to item 40 of the scope of patent application, further comprising: a second light source for providing a second light, wherein the circadian effect factor of the second light is relative to the coordinates of the correlated color temperature (CCT, CAF) Coordinates (CCT, CAF) of the circadian interaction factor that fall within the region and differ from the first light relative to the correlated color temperature.