TWI700961B - Light source apparatus - 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

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

With the invention of the electric light bulb by Thomas Alva Edison, the light source generated by electricity not only lights up the night, but also lights up human civilization. With this artificial light source, mankind can use the night time, thus further driving The development of technology and education. In the research on the influence of light sources on physiological stimuli, Yasukouchi's research found that light sources with high color temperature at night inhibit 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 biological effect further pointed out the relationship between the light source and the secretion of melatonin and the physiological effect, and the light source and the 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 be further explained that different wavelengths of the light source (400nm-550nm) will affect physiological stimulus (circadian stimulus, CS) differently, and determine the degree of the influence of the light source on the physiological stimulus of the human body. Therefore, if the light source is used at night or during the day, it is necessary to use a suitable light source The composition of the spectrum provides a suitable source of artificial lighting.

An embodiment of the disclosure provides a light source device including a light emitting module and a control unit. The light-emitting module is used to provide 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 each other Same as above.

An embodiment of the disclosure provides a light source device including a light emitting module and a control unit. The light-emitting module is used to provide a light. The control unit switches the light emitted by the light-emitting module between multiple first lights. The correlated color temperatures (CCT) of the multiple first lights are different from each other, and the physiological stimulus values of the multiple first lights are substantially different from each other. the same.

An embodiment of the disclosure provides a light source device including a light emitting module and a control unit. The light-emitting module is used to provide 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) of the light and the correlated color temperature act along a circadian rhythm different from sunlight The factor is relative to the trajectory of the correlated color temperature. The circadian action factor of the light rays changes relative to the trajectory of the correlated color temperature. The circadian action factor of one of the first sub-ray and the second sub-ray has coordinates relative to the correlated color temperature in the sunlight The circadian action factor of is below the trajectory of the correlated color temperature, and the coordinates of the circadian action factor of the first sub-ray and the second sub-ray relative to the correlated color temperature are relative to the circadian action factor of sunlight. Above the locus of color temperature.

An embodiment of the disclosure provides a light source device including a light emitting module and a control unit. The light-emitting module is used to provide 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 blue peak in the spectrum of the first light is greater than that of the first light The wavelength of the main blue peak in the light spectrum.

An embodiment of the 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, and the light includes a red sub-ray, a green sub-ray and a blue sub-ray. The control unit is used to change the proportions of the red sub-ray, the green sub-ray, and the blue sub-ray to form different white lights. The wavelength of the main peak in the spectrum of the blue sub-ray falls within the range of 460 nanometers to 480 nanometers.

An embodiment of the 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, and 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 lights. The wavelength of the main peak in the spectrum of the blue sub-ray falls within the range of 440 nm to 450 nm.

An embodiment of the disclosure provides a light source device including a light emitting module and a control unit. The light-emitting module is used to provide 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, thereby changing the relative color temperature of the light and the blue light hazard. Under the same correlated color temperature, the blue hazard of light can be changed, and the correlated color temperature of the first sub-light is lower than that of the second sub-light.

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 for generating 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 for generating 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 used for driving the first light source and the second light source, wherein the light source device is designed in such a way that the first color coordinates and the second color coordinates 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 with a correlated color temperature between 2500 K and 3000 K and a color rendering index 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 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 configured to be operated in a first operation mode for emitting a second light. In the second operation mode, the first light and the second light fall within the same 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 than that of the second light. 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 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. Wherein 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 second light source. In a 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 greater than the physiological stimulus value of the second light than that of the second light More than 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 coordinate (CCT, CAF) of the first light's circadian rhythm action factor relative to the correlated color temperature (CCT, CAF) is (2700±100 K, 0.197), (2700±100 K, 0.696), (4500±200 K, 0.474), ( The coordinates of the six circadian action factors of 4500±200 K, 1.348), (6500±300 K, 0.759) and (6500±300 K, 1.604) relative to the correlated color temperature are in a first area formed by the apex.

An embodiment of the present disclosure provides a light source device including a first light source for providing a first light. The circadian action factor of the first ray of light falls within an area with respect to the coordinate (CCT, CAF) of the correlated color temperature. This area has an upper boundary, a lower boundary, and the circadian action factor between the upper and lower boundaries is relative to The coordinates of the correlated color temperature, in which the circadian rhythm effect factor is located on the upper boundary relative 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 circadian rhythm acts The coordinates of the factor relative to the correlated color temperature (2700±100 K, 0.197), (4500±200 K, 0.474) and (6500±300 K, 0.759) are located on the lower boundary.

In order to make the above-mentioned features and advantages of the present disclosure more comprehensible, the following specific embodiments are described in detail in conjunction with the accompanying drawings.

2A is a schematic diagram of the light source device in an embodiment of the present disclosure, FIG. 2B is a variation of the light source device in the embodiment according to FIG. 2A, and FIG. 2C is the relative light emitted by the light source device in the embodiment in FIG. 2B For schematic diagrams of light intensity and light wavelength spectrum, please refer to 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, rather than being limited to a specific transmission direction. The control unit 120 is used for switching the light B emitted by the light-emitting module 110 to a first light L1 or a second light L2. Wherein, the physiological stimulus value (circadian stimulus/photometry, CS/P) of the second light L2 is less 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 stimulation or the second light with low physiological stimulation according to the actual use environment, time and purpose under the condition that the user is not easy to perceive the change of the light color temperature. L2, to maintain the user's natural menstrual cycle and at the same time provide enough light.

其中，CS(λ)代表人類的生理函數，P(λ)代表人類的明視覺函數，P_0λ 代表混光完成後的光譜，而CS代表混光完成後光譜的生理刺激值，P代表混光完成後光譜的強度值。其中，有關於明視覺函數P(λ)是依照國際照明委員會(Commission internationale de l'éclairage，CIE)的定義。並且人類的生理函數CS(λ)可參照Professor Brainard所提出的Action spectrum(1997)，如圖1所示，Mark Rea所提出的人體非視覺生理函數(2005)以及German pre-standard DIN V所提出的生理函數，並且本揭露之光源裝置100可適用於各種生理函數。並且，圖3是美國國家標準協會(American national standard institute，ANSI)所定義的同色溫的色座標型態的示意圖，請參照圖3，在本實施例中，同色溫的定義是依照美國國家標準協會的定義。換言之，依照此一標準設計之同色溫的光源，對人眼而言的顏色差異不易察覺。其中，圖3示意圖中所繪示的美國國家標準協會定義的色座標型態的詳細座標值請參照表1如下： 表1

其中，表1的數據範圍可換算為圖3中的公差四邊形色溫範圍S1至S8。舉例而言，落在公差四邊形色溫範圍S1內的色溫座標值對而人眼而言很接近，依此類推。更詳細而言，表1中的公差四邊形可進一步換算為色溫值範圍如下表2： 表2

其中，表2的數據範圍可換算為圖3中的橢圓色溫範圍e1至e8，進一步而言，這些橢圓色溫範圍e1至e8亦即麥克亞當(David MacAdam)橢圓。舉例而言，落在橢圓色溫範圍e1內的各色溫座標值對而人眼而言很接近，依此類推。值得注意的是，表1與表2中的座標數據為舉例說明本實施例中之實質上色溫相同，實際之座標數據請參照美國國家標準協會的最新定義，本揭露不以此為限。在另一實施例中，色溫實質上相同代表在同一橢圓色溫範圍內。藉此，光源裝置100可在不易讓使用者察覺到光色色溫變化的情形下，依照實際使用環境、時間及目的以選擇提供不同生理刺激值的光源，以維持使用者生理週期並同時提供足夠的光源。In detail, in this embodiment, the definition of physiological stimulus value (CS/P) is shown in the following formula:

Among them, CS(λ) represents the physiological function of humans, P(λ) represents the _photopic function of humans, 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 light mixing The intensity value of the spectrum after completion. Among them, the photopic function P(λ) is in accordance with the definition of the International Commission on Illumination (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 proposed by Mark Rea (2005) and the German pre-standard DIN V The light source device 100 of the present disclosure can be applied to various physiological functions. And, FIG. 3 is a schematic diagram of the color coordinate pattern of the same color temperature defined by the American National Standards Institute (ANSI). Please refer to FIG. 3. In this embodiment, the definition of the same color temperature is in accordance with the American National Standard The definition of the association. In other words, a 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 as shown in the schematic diagram in Figure 3, please refer to Table 1 as follows: Table 1

Among them, the data range of Table 1 can be converted into the tolerance quadrilateral color temperature range S1 to S8 in FIG. 3. For example, the color temperature coordinate values that fall within the tolerance quadrilateral color temperature range S1 are very close to the human eye, and so on. In more detail, the tolerance quadrilateral in Table 1 can be further converted into the color temperature range as shown in Table 2: Table 2

Among them, the data range of Table 2 can be converted to the elliptical color temperature range e1 to e8 in FIG. 3, and further, these elliptical color temperature ranges e1 to e8 are also called David MacAdam ellipses. For example, the color temperature coordinate values falling within the elliptical color temperature range e1 are very close to the human eye, and so on. It is worth noting that the coordinate data in Table 1 and Table 2 is an example 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. This disclosure is not limited to this. In another embodiment, substantially the same color temperature represents within the same elliptical color temperature range. In this way, the light source device 100 can select light sources with different physiological stimulus values according to the actual use environment, time and purpose under the condition that it is not easy for the user to perceive the change of the light color temperature, so as to maintain the user's physiological cycle and provide sufficient Light source.

In detail, referring to FIG. 2A, the control unit 120 can switch the light-emitting module 110 between multiple 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 There are two light-emitting units D, and these light-emitting units D may include electroluminescence elements, photoluminescence elements or a combination thereof. The light emitting unit D includes at least one first light emitting unit D1, at least one second light emitting unit D2, and at least one 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 There are two sub-rays W2, and the third light-emitting unit D3 provides a third sub-ray W3. Wherein, at least one peak range of the first sub-light W1 can be greater than 420 nm and less than 480 nm, at least one peak range of the second sub-light W2 can be greater than 480 nm and less than 540 nm, and at least one peak range of the third sub-light W3 can be Greater than 540nm.

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

In addition, the light source device 100' in FIG. 2B is similar to the light source device 100 depicted in FIG. 2A. In FIG. 2B, each light-emitting unit provides a light peak range corresponding to the range illustrated in the embodiment of FIG. 2A, but the difference lies in: The first part P1' of the light source device 100' in FIG. 2B may further include a third light emitting unit D3.

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

Wherein, the spectrum of FIG. 2B after the light mixing is as shown in FIG. 2C, since the physiological stimulus value of the second sub-light W2 is greater than the physiological stimulus value of the third sub-light W3, the first light L1' and the second light L2' For the same color temperature of 3000K, the physiological stimulus values are different due to different light mixing spectra. The spectrum of the first light L1' is shown in the mixed light spectrum curve SH1 in Fig. 2C. The physiological stimulus value CS/P is about 0.43 after calculation. The mixed light spectrum of the second light L2' is shown in the spectral curve SL1 in Figure 2C, and its physiological stimulus value CS/P is calculated to be approximately 0.27, which is the CS/P calculated by the above formula, where the first light L1' The physiological stimulus value of is calculated to be about 159% of the physiological stimulus value of the second light L2'. In this way, the physiological stimulation value of the second light L2' and the first light L1' can be more significantly different. However, the above objective can be achieved, and this disclosure is not limited to this.

Furthermore, the control unit 120 can 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 physiological stimulation mode according to demand at multiple different times of the day. Physiological stimulation mode (that is, providing 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 time periods. Please refer to FIG. 2B and FIG. 2D. For example, the light source device 100' can be applied to restaurant lighting. During working hours (9:00 to 18:00 as shown in Figure 2D), the first light L1' with a color temperature of 3000K and a higher physiological stimulus value can be provided to improve the alertness and work spirit of the service staff. At the same time, guests can have a visual sense of warmth and comfort. In the evening (18:00 to 22:00 as shown in Figure 2D), the light-emitting module 110' in the light source device 100' can be switched to the second with a color temperature of 3000K but a lower physiological stimulation value. The light L2' can reduce the physiological stimulation of night shift service staff and guests without affecting the color temperature of the lighting, so as to avoid affecting the secretion of melatonin and affecting the health of service staff and guests. It is worth noting that the time sequence in FIG. 2D is only used to illustrate this embodiment. In other embodiments, it may be changed according to implementation requirements, and the disclosure is not limited thereto.

Furthermore, FIG. 2E is a block diagram of the light source device in 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 current lighting mode of the light source device 100. In detail, the control unit 120 is, for example, a microprocessor, and can switch the light-emitting module 110 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 clock Related. For example, the time management data DT may be the mode switching time data in the timing diagram in FIG. 2D, but the disclosure is not limited thereto. In more detail, the light source device 100 can further include a data writing system DR. The time management data DT can be received and stored in a storage unit SV through the data writing system DR connected to 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 make the light source driving module DM of the light emitting module 110 drive the first part P1 or the second part P2 to achieve the embodiment described in FIG. 2A effect. On the other hand, the light source device 100 may further include a connection interface 140 that transmits the time management data DT from the data writing system DR to the control unit 120, wherein 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 control, and the user UR can use the manual switch or the remote control to select or change the lighting mode of the light source device 100. 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 with the same color temperature and different physiological stimulation values. However, in other embodiments, light with the same or different color temperature and different physiological stimulation 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 part 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, wherein, 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 where the light source device 300 emits light includes a first light-emitting unit D1 and a third light-emitting unit D32, which correspondingly generate the first sub-ray W1 and the third sub-ray W3. Wherein, 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 being excited by the first sub-ray W1 (that is, the third light-emitting unit D32 may be a phosphor Light body). Wherein, at least one peak range of the first sub-light W1 is greater than 420 nm and less than 480 nm, at least one peak range of the second sub-light W2 is greater than 480 nm and less than 540 nm, and at least one peak range of the third sub-light 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 switches the light B3 emitted by the light-emitting module 310 between the first light L13 and the second light L23. The color temperature of L13 and the second light L23 are different.

FIG. 4B illustrates the spectral curve of the first light L13 in the embodiment of FIG. 4A, and FIG. 4C illustrates the spectral curve of the second light 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. According to the spectral curves in FIGS. 4B and 4C, 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 value of the second light L23 is calculated through the above calculations. The stimulus value is about 0.27, and the physiological stimulus value of the first light L13 is about 3.48 times that of the second light L23, that is, the physiological stimulus value of the first light L13 is greater than the physiological stimulus value of the second light L23. The physiological stimulus value of the second light 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 at different time periods. Therefore, the light source device 300 can be used for home lighting. As shown in FIG. 4D, the light-emitting module 310 of the light source device 300 can provide high physiological stimulus value and high color temperature during daylight hours (for example, 9:00 to 18:00). (6500k) light source to make people feel refreshed and boost the spirit, at night time (for example, 18:00 to 22:00), provide a light source with low physiological stimulation value and low color temperature (3000k) to make people feel warm and comfortable a feeling of. Wherein, the aforementioned physiological stimulus values and the spectral curves of FIG. 4B and FIG. 4C are only used to illustrate this embodiment, and other embodiments may be different according to actual needs, and the present disclosure is not limited thereto. In other embodiments, the light-emitting module may provide light with different correlated color temperatures but substantially the same physiological stimulus value in different modes, or provide light with different or substantially the same optical parameters. It will be presented in the following embodiments in FIGS. 15-22B.

FIG. 5A is a schematic diagram of a light source device in another embodiment of the present disclosure, which is similar to the embodiment in FIG. 2A. However, in this embodiment, the light-emitting module 410 further includes at least one 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 sub-ray 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 The fourth light emitting unit D4. When the control unit 420 switches the light-emitting module 410 to the first physiological stimulation mode, the first light-emitting unit D1 emits the first sub-light W1, the second light-emitting unit D2 emits the second sub-light W2, and the fourth light-emitting unit D4 emits the first sub-light W2. Four sub-rays W4. When the control unit 420 switches the light-emitting module 410 to the second physiological stimulation mode, the first light-emitting unit D1 emits the first sub-ray W1, the third light-emitting unit D3 emits the third sub-ray W3, and the fourth sub-ray W3. 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 that of the second sub-ray W2, and the physiological stimulus value of the second sub-ray W2 is greater than that of the third sub-ray W3 value. In short, in the first physiological stimulation mode, the first light L14 provided by the light-emitting module 410 of the light source device 400 may include the first sub-light W1, the second sub-light W2, and the fourth sub-light 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 the first sub-light W1, the third sub-light W3, and the fourth sub-light W4. Thereby, the light source device 100 of the embodiment in FIG. 2A can have a similar effect.

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 (that is, the first portion P14) and emit the 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 part P24) and emit a second light L24. Wherein, 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-light W2 may be generated by a first phosphor excited by the first sub-light W1, and the third sub-light W3 It can be generated by a second phosphor being excited by the first sub-light 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, a second sub-ray W2 and a third sub-ray W3 with different peak ranges are generated. In addition, in this embodiment, the fourth light-emitting unit D4 is, for example, a light-emitting diode, but in other embodiments, the fourth light-emitting unit D4 may be a photoluminescent material that is excited by light to generate the fourth sub-light W4 ( Such as phosphor), 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 lights with different wave peak ranges. Body combination.

5B depicts the spectral curve of the first light L14 in the embodiment of FIG. 5A, and FIG. 5C depicts the spectral curve of the second light L24 in the embodiment of FIG. 5A, and FIG. 5D depicts the spectral curve of the embodiment in FIG. 5A The light source device has timing diagrams of different illumination modes at different time periods. In detail, at least one peak range of the first sub-light W1 is greater than 420 nm and less than 480 nm, and at least one peak range of the second sub-light W2 is greater than 480 nm and less than 540 nm. At least one peak range of the third sub-light W3 is greater than 540 nm and less than 590 nm, and at least one peak range of the fourth sub-light 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 spectrum curve in FIG. 5C. In this embodiment, FIG. 5B and FIG. 5C take a color temperature of 6500K as an example. Based on the spectral curves in FIG. 5B and FIG. 5C, it can be deduced that the physiological stimulus value of the first light L14 of the light source device 400 is about 0.94, and the The physiological stimulus value of the two 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). The light source with high physiological stimulus value and high color temperature can make the staff feel refreshed and boost their spirits. At night time (for example, 18:00 to 22:00), a light source with low physiological stimulus value but still high color temperature is provided. Reduce the physiological stimulation of the staff working at night to avoid affecting the health of the staff. Wherein, the aforementioned physiological stimulus values and the spectral curves of FIG. 5B and FIG. 5C are only used to illustrate this embodiment, and other embodiments may be different according to actual needs, and the present 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%. The detailed description can refer to the embodiments of FIG. 2A and FIG. 4A, which will not be repeated here.

6A is a schematic diagram of a light source device in another embodiment of the present disclosure. FIGS. 6B to 6I illustrate the spectral curves of light provided by the light source device 500 under various color temperature conditions, 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 have the same peak range. However, 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 stimulus values in 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 the first sub-light W1 and the second light-emitting unit D2 provides the second sub-beam When the light W2 and the fourth light emitting unit D4 provide the fourth sub light W4, the light emitting module 510 of the light source device 500 can adjust the ratio of the first sub light W1, the second sub light W2, and the fourth sub light W4 to respectively Provide first light L15 (e.g. 6500K, CS/P value 0.82), third light L35 (e.g. 5000K, CS/P value 0.67), fifth light L55 (e.g. 4000K, CS /P value 0.54) and the seventh light L75 (for example, 3000K, CS/P value 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 proportions of the first sub-ray W1, the third sub-ray W3, and the fourth sub-ray W4 to provide a lower physiology according to usage requirements. The second ray L25 (6500K, CS/P value 0.72), the fourth ray L45 (5000K, CS/P value 0.57), the sixth ray L65 (4000K, CS/P value 0.45) and the eighth ray L85 ( 3000K, CS/P value 0.30). Therefore, the light-emitting module 510 of the light source device 500 can provide more sets of color temperature light sources 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. , The seventh physiological stimulation mode and the eighth physiological stimulation mode. In addition, the control unit 520 makes the light emitted by the light-emitting module 500 in these physiological stimulation modes be in the first light L15 (the spectral curve is shown in Fig. 6B), the second light L25 (the spectral curve is shown in Fig. 6C), and the third light L35. (Spectral curve shown in Figure 6D), fourth light L45 (spectral curve shown in Figure 6E), fifth light L55 (spectral curve shown in Figure 6F), sixth light 65 (spectral curve shown in Figure 6G), seventh light L75 (spectral curve shown in Figure 6F) The curve shown in Fig. 6H) and the eighth light L85 (spectral curve shown in Fig. 6I) are switched between, thereby providing more groups of light sources.

In more detail, the physiological stimulus value of the second light L25 is smaller than the physiological stimulus value of the first light L15, and the color temperature of the second light L25 and the first light L15 are substantially the same. The physiological stimulus value of the fourth light L45 is smaller than that of the third light L35, and the color temperature of the fourth light L45 and the third light L35 are substantially the same. The physiological stimulus value of the sixth light L65 is smaller than that of the fifth light L55, and the color temperature of the sixth light L65 and the fifth light L55 are substantially the same. The physiological stimulus value of the eighth light L85 is less than that of the seventh light L75, and the color temperature of the eighth light L85 and the seventh light L75 are substantially the same. Moreover, 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 substantially different. Substantially different. In other words, 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, the third sub-ray W3 and the fourth sub-ray W4 to provide more groups of light with color temperature. And each group of light with the same color temperature can be switched between high physiological stimulation value and low physiological stimulation value.

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

Thereby, the light source device 500 can change the light 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 achieve high physiological performance under the condition of 6500K color temperature. Switch between the first light L15 of stimulation value and the second light L25 of low physiological stimulation value. It is also possible to switch between the third light L35 with high physiological stimulation value and the fourth light L45 with low physiological stimulation value under the condition of 5000K color temperature. It is also possible to switch between the fifth light L55 with high physiological stimulation value and the sixth light L65 with low physiological stimulation value under the condition of 4000K color temperature. And it can also switch between the seventh light L75 with high physiological stimulation value and the eighth light L85 with low physiological stimulation value under the condition of 3000K color temperature. In this way, the light source device 500 may have greater application potential.

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

6J illustrates a timing diagram of the light source device in the embodiment of FIG. 6A having different lighting modes at different time periods. Please refer to FIG. 6J. For example, the light source device 500 can be applied to office lighting, where the light source device 500 is in daylight hours. (8:00 to 11:00 in FIG. 6J) can be switched to the first physiological stimulation mode so that the light-emitting module 510 provides the first light L15 with high color temperature (6500K) and 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 to enable the light-emitting module 510 to provide the second light L25 with high color temperature and low physiological stimulation value, which can reduce the damage Physiological stimulation of staff during rest. Then, the light source device 500 can switch back to the first physiological stimulation mode again in the afternoon (13:00 to 16:00) after the lunch break to improve the work efficiency. In the evening hours after get off work (after 18:00 in FIG. 6J), the light source device 500 can be switched to the seventh physiological stimulation mode so that the light-emitting module 510 provides 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 (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 combinations of light sources to meet 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 spectra of the light and the first light respectively emitted from the light-emitting unit in the first illumination mode in FIG. 7, and FIG. 8B illustrates the graph The spectra of the light and the second light respectively emitted from the light-emitting unit in the second lighting mode in 7 and FIG. 9 shows the CIE 1976 u'-v' diagram of the first light and the second light in FIG. 7 (CIE 1976 u'-v' diagram) color coordinates. In FIGS. 8A and 8B, the horizontal axis represents wavelength, and its unit is nanometer (nm), and the vertical axis represents spectral intensity, and its unit is arbitrary unit. Referring to FIGS. 7, 8A, 8B and 9, the light source device 100a of this embodiment is similar to the light source device 100 in FIG. 2A, and the main difference is that in the light source device 100, the spectrum of the first light L1 is different Regarding the spectrum of the second light L2, the color temperature of the first light L1 and the color temperature of the second light L2 are substantially the same as each other, but 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 100a includes a light emitting module 110a 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 light L1 (see FIG. 8A) is different from the spectrum of the second light L2 (see FIG. 8B), and the color temperatures of the first light L1 and the second light L2 (see FIG. 9) are substantially the same as each other. Referring to FIG. 9, the color coordinates of the first light L1 and the color coordinates of the second light L2 are substantially located on the same line segment representing the correlated color temperature of 3000 K.

In this embodiment, the control unit 120 causes the light emitting unit 110a to switch between multiple 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, such as 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 of the light-emitting unit (for example, including the first to fourth light-emitting units D1-D4) to emit the second light L2. The first part and the second part are partly the same or completely different from each other.

The light-emitting unit (for example, the first to fifth 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-light 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-light W1, the second light-emitting unit D2 emits a second sub-light W2, and the third light-emitting unit D3 emits a third sub-light 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-light W1, the second light-emitting unit D2 emits a second sub-light W2, and the third light-emitting unit D3 emits a third sub-light W3 and the fourth light-emitting unit D4 emit a fourth sub-light 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 may be invisible rays. 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, and the fourth sub-ray W4 is a red ray and a fifth sub-ray. The light W5 is ultraviolet light. Furthermore, 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 phophor, and the third light-emitting unit D3 Is the second phosphor, the fourth light-emitting unit D4 is the third phosphor, and the fifth light-emitting unit D5 is the 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 phosphor. The third phosphor is excited by a sub-ray W1. In this embodiment, the first, second, and third phosphors can be doped into the sealing material covering the first light-emitting unit D1 (for example, 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 the first light L1 including white light and ultraviolet light. Therefore, the first light L1 is suitable for illuminating the product containing the fluorescent whitening agent. For example, cloth products. When the light-emitting module 110a switches to the second lighting mode, the light-emitting module 110a emits a second light L2 containing white light but not ultraviolet light. Therefore, the second light L2 is suitable for illuminating leather shoes and leather products that are susceptible to ultraviolet light. And artworks. Furthermore, in the light source device 100a of this embodiment, because the color temperatures of the first light L1 and the second light L2 are substantially the same as each other, when multiple light source devices 100a or light-emitting modules 110a are located in the same display space and emit the first light When a light L1 and a second light L2 are used, the light color of the light source device 100a or the light emitting module 110a is the same, 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 light, the second sub-ray W2 may be a cyan light, the third sub-ray W3 may be a lime color light, and the fourth The sub-ray W4 is a red light and the fifth sub-ray W5 is an ultraviolet light, so the spectra of the second light L2 including the first sub-ray W1, the second sub-ray W2, the third sub-ray W3, and the fourth sub-ray W4 are similar The continuous spectrum of natural white light.

In still another embodiment, the fifth sub-light W5 may be an infrared light, and the infrared light may be used in the positioning system. Therefore, the first light L1 can be used for both illumination and positioning.

FIG. 10 is a schematic diagram of a light source device according to another embodiment of the disclosure. FIG. 11A illustrates the spectra of the light and the first light respectively emitted from the light-emitting unit in the first illumination mode in FIG. 10. FIG. 11B is a drawing showing the spectra of the light and the second light respectively emitted from the light-emitting unit in the second illumination mode in FIG. 10. Fig. 12 shows 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 wavelength in nanometers (nm), and the vertical axis represents spectral intensity in arbitrary units. 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 greater 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 it is marked as "Ra". Furthermore, in this embodiment, the luminous efficiency of the second light L2' is greater than that of the first light 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 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 'Provide a fourth sub-ray W4', the fifth light-emitting unit D5' provides a fifth sub-ray W5' and the 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' of the light-emitting unit (for example, the first, second, third and fourth light-emitting units D1', D2', D3 'And D4') emit the 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') The second light L2' is emitted. The first part P1' and the second part P2' are partially identical to each other or completely different from each other. In this embodiment, the first part P1' and the second part P2' are partially identical to each other, because both the first part P1' and the second part P2' include the first light-emitting unit D1'.

The first part 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 part 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 the first sub-light W1', the second light-emitting unit D2' emits the second sub-light W2', and the third light-emitting unit D3' The third sub-ray W3' is emitted and the fourth light-emitting unit D4' emits the 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 the first sub-light W1', and the fifth light-emitting unit D5' emits the fifth sub-light W5' and the sixth light-emitting unit D6' The sixth sub-ray W6' is emitted.

In this embodiment, the first sub-ray W1' is a blue light, the second sub-ray W2' is a green light, the third sub-ray W3' is a yellow light, and the fourth sub-ray W4' is a red light. The light W5' is a red light and the sixth sub-light W6' is a yellowish 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 the third phosphor, the fifth light-emitting unit D5' is the second light-emitting diode, and the sixth light-emitting unit D6' is the fourth phosphor. The first phosphor, the second phosphor, and the third phosphor are excited by the light (for example, the seventh sub-light 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 (e.g., the eighth sub-light W8') emitted by the eighth light-emitting unit D8' (e.g., the fourth light-emitting diode) to emit the 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 can be doped into the sealing material 113 covering the seventh light-emitting unit D7', and the fourth phosphor can 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 greater than the general color rendering index of the second light L2', but the luminous efficiency of the second light L2' is greater than that of the first light L1'. Therefore, when the light-emitting module 110b switches to the first lighting mode, the light-emitting module 110b emits the first light L1' with a higher general color rendering index, so the first light L1' is suitable for illuminating fresh food. Therefore, fresh foods may have better colors. When the light-emitting module 110b switches to the second lighting mode, the light-emitting module 110b emits the second light L2' with higher luminous efficiency. Therefore, the second light L2' is suitable for situations where luminous efficiency needs to be considered. As shown in FIGS. 11A, 11B, and 12, the first light L1' (FIG. 11A) and the second light 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 L1' and the color coordinates of the second light L2' are substantially located 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 low physiological stimulus value and low blue light hazard.

FIG. 13A is a diagram illustrating the spectrum of light and the first light respectively emitted from the light-emitting unit in the first light-emitting mode in FIG. 10 according to another embodiment of the present disclosure, and FIG. 13B is a diagram according to another embodiment of the present disclosure The spectra of the light and the second light respectively emitted from the light-emitting unit in the second light-emitting mode in FIG. 10 are shown, and FIG. 14 is a drawing of 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), and 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, In this embodiment (as shown in FIGS. 13A and 13B), the spectra of the first light L1' and the second light L2' are different from those of the embodiment in FIGS. 10, 11A, 11B, and 12 (as shown in FIGS. 11A and 11B). Show) the spectra of the first light L1' and the second light L2'.

In this embodiment, the color rendering index R14 (CRI R14) of the first light L1' is greater 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 greater than the first light L2'. The color rendering index of light L1' is R13. In particular, in this embodiment, the color rendering index R14 of the first light L1' is greater than 90, and the color rendering index R13 of the second light L2' is greater than 90. Furthermore, in this embodiment, the general color rendering index of the first light L1' and the second light L2' are both 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' with a higher color rendering index R14, so the first light L1' is suitable for lighting Green plants. 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' with a higher color rendering index R13, so the second light L2' is suitable for illuminating a human face or portrait, and Human faces or portraits can have better colors. As shown in FIGS. 13A, 13B, and 14, the first light L1' (FIG. 13A) and the second light 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 L1' and the color coordinates of the second light L2' are substantially located on the same line segment representing the correlated color temperature of 4000 K.

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

15 is a schematic diagram of a light source device according to another embodiment of the present disclosure. FIG. 16A is the spectrum of the sub-light emitted by the light emitter of FIG. 15, and FIG. 16B is the circadian action factor of the light emitted by the light emitting module of FIG. 15 Relative to correlated color temperature graph. 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 multiple first lights. The correlated color temperatures (CCT) of the first rays of light are different from each other, and the circadian action factors of the first rays of light are substantially the same. The circadian rhythm factor is the physiological stimulus value (CS/P) mentioned above. For example, in FIG. 16B, the black square dots represent the circadian action factor and correlated color temperature of a first light, and the black square dots arranged substantially along a horizontal line in FIG. Multiple circadian rhythm factors and multiple correlated color temperatures. "The circadian action factors of the first rays of light are substantially the same as each other" means that the variation of these circadian action factors is within ±20% of the average value of these circadian action factors, preferably in the circadian rhythm Within ±10% of the mean value of the action factor.

In this embodiment, the light emitting module 610 includes a plurality of light emitters E1, E2, E3, E41, and E42, which respectively emit sub-lights V1, V2, V3, V41, and V42 in different wavelength ranges, and the sub-lights 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 among the multiple 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 electroluminescent elements, photoluminescent elements, or a combination thereof. The electroluminescent element is, for example, a light emitting diode chip, 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. Furthermore, the light emitter E41 and the light emitter E42 constitute a light emitter E4, where the light emitter E41 is, for example, a blue light-emitting diode chip, and the light emitter E42 is, for example, a yttrium aluminum garnet (YAG) fluorescent. The light body, 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 light. Specifically, when the sub-light V41 from the light emitter E41 irradiates the light emitter E42, the light emitter E42 converts the sub-light V41 into the sub-light 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-light V1 falls within the range of 460 nanometers (nm) to 470 nanometers, the peak wavelength of the sub-light V2 falls within the range of 515 nanometers to 525 nanometers, and the sub-light V3 The peak wavelength of is within 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 width of the sub-ray V4 is 74 In nano, the sub-ray V4 includes sub-ray V42 and 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 ratio of the intensity of the sub-lights V1, V2, V3, and V4 by changing the currents or voltages respectively applied to the light emitters E1, E2, E3, and E41. Therefore, the light B6 can be used in the first Switch between lights. In this embodiment, the proportions of the sub-lights V1, V2, V3, and V4 are 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 correlated color temperature of the light B6 can be adjusted within the range of 3750K to 5500K by the control unit 620 performing pulse width modulation. 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 stimulus value is 0.8 and the correlated color temperature is 5500K, the duty cycle ratio 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 multiple first rays are all less than 0.005. For the color consistency of white light, the standard correlated color temperature still has an allowable chromaticity variation range. The Duv value is defined as the variation perpendicular to the Planckian locus in the CIE 1976 color space, which is used to describe the variation of chromaticity. Generally speaking, if the Duv value is less than 0.005, the observer cannot easily distinguish the color inconsistency.

FIG. 16C is a diagram of the relationship between the color rendering index of the light emitted by the light-emitting module of FIG. 15 and 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 second lights, wherein the correlated color temperatures of the second lights are different from each other, and The color rendering indexes of the multiple second light rays are substantially the same as each other. For example, in FIG. 16C, the black square dots refer to the color rendering index and correlated color temperature of a second light, and the black square dots arranged substantially along a horizontal line in FIG. 16C represent that they belong to the second light. Multiple color rendering indexes and multiple correlated color temperatures. "The color rendering indexes of the multiple second light rays are substantially the same as each other" means that the color rendering index changes within ±5. In this embodiment, the Duv values of the multiple second rays are all less than 0.005. In this embodiment, when the color rendering index of the light B6 is 85, the correlated color temperature of the light B6 can be adjusted in the range of 2700 K to 6500 K by the control unit 620 performing pulse width modulation.

In this embodiment, the control unit 620 also switches the light B6 emitted from the light-emitting module 610 between 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 The color rendering index or circadian rhythm action factor (ie, physiological stimulus value) is different from each other. The definition of "correlated color temperature is substantially the same" in "the correlated color temperature of the multiple third rays is substantially the same as each other" 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 dots in FIG. 16B or FIG. 16C represent a physiological stimulus value and correlated color temperature of a third light, or a color rendering index and correlated color temperature of a third light, and are substantially along the figure. The black square dots arranged by the vertical lines of 16B or 16C represent multiple physiological stimulus values and multiple correlated color temperatures belonging to the multiple third rays, or multiple color rendering indexes and multiple correlated color temperatures belonging to the multiple third rays. . Furthermore, in this embodiment, the Duv values of the multiple third rays are all less than 0.005. For example, when the correlated color temperature is 3000 K, the control unit 620 performs pulse width modulation, and 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, the control unit 620 performs pulse width modulation, and the color rendering index of the light B6 can be adjusted in the range of 55 to 93.

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

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

In the light source device 600 according to the present embodiment, since the light B6 emitted from the light emitting module 610 can be switched among multiple first lights, multiple second lights, multiple third lights, and multiple fourth lights, the light source device 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 the spectrum of the sub-light emitted by the light emitter of FIG. 17, and FIG. 18B is the circadian action factor of the light emitted by the light-emitting module of FIG. Relative to correlated color temperature graph. 18C is a diagram showing the relationship between the color rendering index of the light emitted by the light emitting element of FIG. 17 and the correlated color temperature, where the white square dots 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-lights V11a, V12a, V2a, V3a, V4a in different wavelength ranges. , V5a, V6a, and V7a, and sub-lights 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. Furthermore, the light emitter E11a and the light emitter E12a constitute a light emitter E1a, where the light emitter E12a is, for example, a lime color phosphor. When the sub-light V11a emitted by the light emitter E11a irradiates the light emitter E12a, the light emitter E12a converts the sub-light V11a into the sub-light V12a. The sub-ray V12a and the unconverted sub-ray V11a form a sub-ray V1a. In this embodiment, nearly all 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 the range of 550 nm to 560 nm, the peak wavelength of the sub-ray V2a falls within the range of 440 nm to 450 nm, and the peak wavelength of the sub-ray V3a In the range of 460nm to 470nm, the peak wavelength of sub-ray V4a falls within the range of 490nm to 500nm, and the peak wavelength of sub-ray V5a falls within the range of 520nm to 530nm. , The sub-ray V6a falls within the range of 610 nm to 620 nm, and the peak wavelength of the sub-ray V7a falls within 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 width of the sub-ray V4a is The FWHM of the sub-ray V5a is 28 nm, the FWHM of the sub-ray V6a is 14 nm and the FWHM of the sub-ray V7a is 15 nm.

The control unit 620 is used to change the current or voltage applied to the light emitters E11a, E2a, E3a, E4a, E5a, E6a, and E7 to change the sub-lights V1a, V2a, V3a, V4a, V5a, V6a, and V7a. Intensity ratio, so the light B6 can be switched among multiple first lights, multiple second lights, multiple third lights, and multiple fourth lights. In this embodiment, the proportions of the sub-lights 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 in the range of 2700 K to 6500 K by performing pulse width modulation by the control unit 620 . 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 the control unit 620 performing pulse width modulation. 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 the 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 in the 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 all less than 0.005.

19A to 19D are diagrams showing the relationship between the circadian rhythm action factor of the light emitted by 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 multiple fourth light rays. The circadian rhythm action factors (ie, physiological stimulation values) of the multiple fourth light rays include or It is substantially the same as the circadian action factor of sunlight in a range of correlated color temperature, where the range of correlated color temperature is, for example, a range of 3000 K to 6500 K. The gray square dots and gray lines in Figure 18B and Figures 19A to 19D represent the circadian action factors corresponding to the correlated color temperature of sunlight, and all the black square dots in Figures 18B and 19A to 19D represent corresponding to these various The circadian action factor of the correlated color temperature of the fourth light. In FIGS. 18B, 19A, and 19B, the circadian rhythm effect factors (such as physiological stimulus values) of the fourth rays of light are included in the correlated color temperature range (for example, the correlated color temperature range from 3000 K to 6500 K). Rhythm action factor. In the embodiment of FIG. 19A, the color rendering indexes of the multiple fourth rays are all greater than 80. In addition, in FIGS. 19C and 19D, the circadian action factors (ie, physiological stimulus values) of the fourth rays of light are substantially equal to the sun in the correlated color temperature range (for example, from 3000 K to 6500 K). The circadian action factor of light, where "the circadian action factor of the fourth rays of light (ie physiological stimulus value) is substantially equal to the circadian action factor of sunlight" refers to the circadian action of the fourth rays of light The deviation value of the factor calculated from the circadian action factor of sunlight in the corresponding correlated color temperature falls within ±20% of the circadian action factor of the corresponding correlated color temperature, and preferably falls within the corresponding correlated color temperature. Within ±10% of the circadian rhythm factor.

20 illustrates a schematic diagram of a light source device according to another embodiment of the present disclosure. FIG. 21A is the spectrum of the sub-light emitted by the light emitter of FIG. 20, and FIG. 21B is the circadian rhythm of the light emitted by the light emitting module of FIG. 20 A graph of the effect factor versus the correlated color temperature. 21C is a diagram showing the relationship between the color rendering index of light emitted by the light emitting module of FIG. 20 and the correlated color temperature, wherein the white square dots represent the color rendering index of light B6 emitted by the light emitting module of 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 in FIG. 17. The light emitter E1b is, for example, a light emitting diode chip, and the peak wavelength of the sub-light V1b emitted by the light emitter E1a falls within a range of 550 nm to 560 nm. For example, the half-height width of the sub-ray V1b is 28 nm.

The control unit 620 is used to change the sub-lights V1b, V2a, V3a, V4a, V5a, V6a, and V7a by changing the current and voltage applied to the light emitters E1b, E2a, E3a, E4a, E5a, E6a, and E7a. Intensity ratio, so the light B6 can be switched among multiple first lights, multiple second lights, multiple third lights, and multiple fourth lights. In this embodiment, the proportions of the sub-lights 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 the control unit 620 performing pulse width modulation. When the color rendering index of the light B6 is 90, the correlated color temperature of the light B6 can be modulated in the range of 2700 K to 6500 K by the control unit 620 performing pulse width modulation. 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 in the 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 in the range of 1 to 92 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 all less than 0.005.

22A and 22B are diagrams showing the relationship between the circadian rhythm action factor of the light emitted by the light emitting module of FIG. 20 and the correlated color temperature when the color rendering index is greater than 80 and 90, respectively. 20, 21B, 22A, and 22B, the control unit 620 can also switch the light B6 emitted by the light-emitting module 610b between multiple fourth light rays, and the circadian rhythm action factors (ie, physiological stimulus values) of the multiple fourth light rays include or It is substantially equivalent to the circadian action factor of sunlight in a correlated color temperature range, where the correlated color temperature range is, for example, 3000 K to 6500 K. The gray dots and gray lines in FIGS. 21B, 22A, and 22B represent multiple circadian action factors corresponding to multiple correlated color temperatures of sunlight, and all black square dots in FIGS. 21B, 22A, and 22B represent Multiple circadian action factors corresponding to multiple correlated color temperatures of the multiple fourth light rays, respectively. In FIGS. 21B and 22A, the circadian action factors (ie physiological stimulus values) of the fourth rays of light include the circadian action 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 action factors (such as physiological stimulus values) of the multiple fourth rays are substantially the same as the day and night of sunlight in the correlated color temperature range (for example, the correlated color temperature range from 3000 K to 6500 K). Circadian action factors, where "the circadian action factors of the fourth rays of light (such as physiological stimulus values) are substantially the same as the circadian action factors of sunlight" means that the circadian action factors of the fourth rays of light are always corresponding The deviation of the circadian action factor of sunlight in the correlated color temperature is ±20% of the circadian action factor of the corresponding correlated color temperature, preferably ±10% of the circadian action factor of the corresponding correlated color temperature.

FIG. 23 is a schematic diagram of a light source device according to another embodiment of the disclosure. 24A to 24D are the spectra of the sub-rays emitted by the light emitters of the four embodiments in FIG. 23. 25A and 25B are diagrams showing the relationship between the circadian action factor of the light emitted by the light-emitting module of FIG. 23 and the sunlight with respect to the correlated color temperature. Referring 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-light V1c and a second sub-light V2c to form a light B6c, so the circadian action factor and the correlated color temperature of the light are relative to the circadian action factor different from sunlight The circadian action factor of light B6c in the trajectory of correlated color temperature (for example, the dashed line in FIG. 25A) changes with respect to the trajectory of correlated color temperature (for example, the curve formed by a triangle or circle in FIG. 25A), where the first The coordinate of the circadian action factor of one of the sub-rays V1c and the second sub-ray V2c with respect to the correlated color temperature is below the trajectory of the circadian action factor of sunlight with respect to the correlated color temperature, and the first sub-ray V1c and the second The coordinate of the other circadian action factor of the light V2c relative to the correlated color temperature lies above the trajectory of the circadian action factor of sunlight relative to the correlated color temperature. For example, the correlated color temperature of the first sub-light V1c is lower than the correlated color temperature of the second sub-light V2c, and the coordinate of the circadian action factor relative to the correlated color temperature at the left end of the curve formed by the triangle in FIG. The coordinate of the circadian action factor of light V1c relative to the correlated color temperature, and above the trajectory of the circadian action factor of sunlight relative to the correlated color temperature, and the circadian action at the right end of the curve formed by the triangle in Fig. 25A The coordinate of the factor relative to the correlated color temperature is expressed as the coordinate of the circadian action factor of the second sub-ray V2c relative to the correlated color temperature, and is below the trajectory of the circadian action factor of sunlight relative to the correlated color temperature. In another embodiment, the coordinate of the circadian action factor relative to the correlated color temperature at the left end of the curve formed by the circle in FIG. 25A is expressed as the coordinate of the circadian action factor of the first sub-ray V1c relative to the correlated color temperature , And below the trajectory of the circadian action factor of sunlight relative to the correlated color temperature, and the coordinates of the circadian action factor relative to the correlated color temperature at the right end of the curve formed by the circle in Figure 25A are expressed as the second sub The coordinate of the circadian action factor of the light V2c relative to the correlated color temperature is above the trajectory of the circadian action factor of sunlight relative 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-light V1c and a second sub-light 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 chip, 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 chips of different colors, such as red light-emitting diode chips, green light-emitting diode chips, and blue light-emitting diode chips, or have at least one type of fluorescent light. The at least one light-emitting diode chip of the body is, for example, a blue light-emitting diode chip covered by a yellow phosphor. Similarly, the light emitter E2c 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 At least one light-emitting diode chip of a phosphor is, for example, a blue light-emitting diode chip covered by a yellow phosphor. FIG. 24A illustrates the spectra of the first sub-ray V1c and the second sub-ray V2c in an 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 coordinate of the circadian action factor of the first sub-ray V1c with respect to the correlated color temperature (that is, the coordinate of the left end of the curve formed by the circle in FIG. 25A) falls on the day and night of sunlight. The rhythmic action factor is below the trajectory of the correlated color temperature, and the circadian action factor of the second sub-ray V2c is relative to the coordinate of the correlated color temperature (that is, the coordinates of the right end of the curve formed by the circle in FIG. 25A). Above the trajectory of the circadian rhythm action 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 low circadian rhythm action factor, especially at night to maintain the user’s natural physiological cycle while providing sufficient light sources, and compared to sunlight, It is adjusted to have a high correlated color temperature and a high circadian rhythm effect factor to promote the user's work.

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

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 action factor of the first sub-ray V1c relative to the correlated color temperature (ie, the coordinates of the left end of the curve formed by the square in FIG. 25B) fall on the circadian rhythm of sunlight The action factor is below the trajectory of the correlated color temperature, and the coordinates of the circadian action factor of the second sub-ray V2c relative to the correlated color temperature (that is, the coordinates of the right end of the curve formed by the square in FIG. 25B) also fall on The circadian rhythm action factor of sunlight is below the trajectory of the correlated color temperature. Therefore, when the correlated color temperature is adjusted, the light B6c always has a low circadian rhythm action factor relative to sunlight, so as to always maintain the user's natural physiological cycle.

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

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

In Table 3, the ratio of PWM1 to 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-light V1c and the second sub-light V2c. Furthermore, x and y in Table 3 refer to the x and y chromaticity coordinates of the CIE 1931 color space chromaticity diagram.

FIG. 26 is a schematic diagram of a light source device according to another embodiment of the disclosure. 27A and 27B are the spectra of sub-rays emitted by the light emitters of the two embodiments in FIG. 26. 28A and 28B are diagrams showing the relationship between the circadian rhythm action factors of the light emitted by the light-emitting module of FIG. 26 and the sunlight with respect to the correlated color temperature. Referring 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 as follows. 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-light 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 chip, and the photoluminescent element is, for example, a phosphor. In this embodiment, the third sub-light V3d may be white light. The light emitter E3d may include a plurality of light emitting diode chips of different colors, such as red light emitting diode chips, green light emitting diode chips, and blue light emitting diode chips, or have at least one type of fluorescent light. The at least one light-emitting diode chip of the body is, for example, a blue light-emitting diode chip covered by 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 coordinate of the circadian action factor of the light B6d relative to the correlated color temperature It changes between an area having three vertices Q1, Q2, and Q3 with coordinates of the circadian action factors of the first sub-ray V1c, the second sub-ray V2c, and the third sub-ray V3d with respect 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 V3d in another embodiment. The spectrum of the three sub-rays V3d. Furthermore, 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-light V1c (that is, the correlated color temperature of the vertex Q1) is lower than the correlated color temperature of the second sub-light V2c (that is, the correlated color temperature of the vertex Q2), and the correlated color temperature of the third sub-light V3d (That is, the correlated color temperature of the vertex Q3) is lower than the correlated color temperature of the second sub-light V2c (that is, the correlated color temperature of the vertex Q2). Furthermore, the coordinates of the circadian action factor of the first sub-ray V1c relative to the correlated color temperature (that is, the coordinates of the vertex Q1) and the coordinates of the circadian action factor of the third sub-ray V3d relative to the correlated color temperature (that is, the coordinates of the vertex Q3) They are on opposite sides of the trajectory of the circadian rhythm of sunlight relative to the correlated color temperature. In this embodiment, the coordinate of the circadian action factor of the first sub-ray V1c relative to the correlated color temperature (that is, the coordinate of the vertex Q1) falls below the trajectory of the circadian action factor of sunlight relative to the correlated color temperature, and the second sub-ray V1c The coordinate of the circadian action factor of the light V2c relative to the correlated color temperature (that is, the coordinate of the vertex Q2) lies above the trajectory of the circadian action factor of the sunlight relative to the correlated color temperature, and the circadian action factor of the third sub-ray V3d is relatively The coordinates of the correlated color temperature (that is, the coordinates of the apex Q3) fall above the trajectory of the circadian action factor of sunlight relative to the correlated color temperature.

In the embodiment of FIG. 27B, the correlated color temperature of the first sub-light V1c (that is, the correlated color temperature of the vertex Q1) is lower than the correlated color temperature of the second sub-light V2c (that is, the correlated color temperature of the vertex Q2), and the correlated color temperature of the third sub-light V3d (That is, the correlated color temperature of the vertex Q3) is higher than the correlated color temperature of the first sub-light V1c (that is, the correlated color temperature of the vertex Q1). Furthermore, the coordinates of the circadian action factor of the second sub-ray V2c relative to the correlated color temperature (that is, the coordinates of the vertex Q2) and the coordinate of the circadian action factor of the third sub-ray V3d relative to the correlated color temperature (that is, the coordinate of the vertex Q3) They are on opposite sides of the trajectory of the circadian rhythm of sunlight relative to the correlated color temperature. In this embodiment, the coordinate of the circadian action factor of the first sub-ray V1c relative to the correlated color temperature (that is, the coordinate of the vertex Q1) falls below the trajectory of the circadian action factor of sunlight relative to the correlated color temperature, and the second sub-ray V1c The coordinate of the circadian action factor of the light V2c relative to the correlated color temperature (that is, the coordinate of the vertex Q2) lies above the trajectory of the circadian action factor of the sunlight relative to the correlated color temperature, and the circadian action factor of the third sub-ray V3d is relatively The coordinates of the correlated color temperature (that is, the coordinates of the vertex Q3) fall below the trajectory of the circadian action factor of sunlight with respect to the correlated color temperature.

The following Table 4 illustrates the optical data of the first sub-ray V1c, the second sub-ray V2c, and the third sub-ray V3d in 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, which is related to the first sub-light 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 of the CIE 1931 color space chromaticity diagram.

FIG. 29 is a schematic diagram of a light source device according to another embodiment of the disclosure. Fig. 30 is a spectrum of sub-rays emitted by the light emitter of Fig. 29. FIG. 31 is a diagram of the relationship between the light emitted by the light-emitting module of FIG. 29 and the circadian rhythm action factor of 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 as follows. 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-light 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 chip, 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 LED chips of different colors, such as red LED chips, green LED chips, and blue LED chips, or have at least one type of fluorescent The at least one light-emitting diode chip of the body is, for example, a blue light-emitting diode chip covered by 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 rhythm effect factor of the light B6e The coordinates relative to the correlated color temperature are at four vertices Q1, which have the coordinates of the circadian action factors of the first sub-ray V1c, the second sub-ray V2c, the third sub-ray V3d, and the fourth sub-ray V4e with respect to the correlated color temperature. Change between Q2, Q3 and Q4.

FIG. 30 illustrates the spectra of the first sub-ray V1c, the second sub-ray V2c, the third sub-ray V3d, and the fourth sub-ray V4e in 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-light 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 (that is, the correlated color temperature of the vertex Q4), and the correlated color temperature of the third sub-ray V3d (that is, 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), and is lower Is the correlated color temperature of the fourth sub-ray V4e (that is, the correlated color temperature of the vertex Q4). The coordinates of the circadian action factor of the first sub-ray V1c relative to the correlated color temperature (that is, the coordinates of the vertex Q1) and the coordinates of the circadian action factor of the third sub-ray V3d relative to the correlated color temperature (that is, the coordinates of the vertex Q3) are in the sun The circadian action factor of light is on the opposite sides of the trajectory of the correlated color temperature, the circadian action factor of the second sub-ray V2c relative to the coordinate of the correlated color temperature (ie the coordinate of the vertex Q2) and the circadian rhythm of the fourth sub-ray V4e The coordinates of the factor relative to the correlated color temperature (that is, the coordinates of the vertex Q4) are on opposite sides of the trajectory of the circadian rhythm action factor of sunlight relative to the correlated color temperature. In this embodiment, the coordinate of the circadian action factor of the first sub-ray V1c relative to the correlated color temperature (that is, the coordinate of the vertex Q1) falls below the trajectory of the circadian action factor of sunlight relative to the correlated color temperature, and the second sub-ray V1c The coordinate of the circadian action factor of the light V2c relative to the correlated color temperature (that is, the coordinate of the vertex Q2) lies above the trajectory of the circadian action factor of the sunlight relative to the correlated color temperature, and the circadian action 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 action factor of sunlight relative to the correlated color temperature, and the circadian action factor of the fourth sub-ray V4e is relative to the coordinate of the correlated color temperature (that is, the vertex Q4). The coordinates of) fall below the trajectory of the circadian action factor of sunlight relative to the correlated color temperature.

The following Table 5 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 in 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 light emitters E1c, E2c, E3d and E4e, which is about the first The ratio of the intensities of the sub-ray V1c, the second sub-ray V2c, the third sub-ray V3d and the fourth sub-ray V4e. Furthermore, x and y in Table 5 refer to the x and y color coordinates of the CIE 1931 color space chromaticity diagram.

Fig. 32 is a spectrum of sub-rays emitted by the light emitter of another embodiment of Fig. 23. FIG. 33 is a diagram showing the relationship between the circadian rhythm action factor of the light emitted by the light emitting module of FIG. 32 and the correlated color temperature. FIG. 34A is a diagram showing the relationship between the blue light hazard of the light emitted by the light emitting module in the embodiment of FIG. 32 and the correlated color temperature when the correlated color temperature is greater than 5000 K. FIG. 34B is a diagram showing the relationship between the blue light hazard of the light emitted by the light emitting module of the embodiment of FIG. 32 and the color rendering index when the correlated color temperature is greater than 5000 K. 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 as follows. In this embodiment, the controller 620c is used to change the ratio of the first sub-light V1c to the second sub-light V2c to form the light B6c, so that the correlated color temperature and the blue light hazard of the light B6c are changed, wherein, under the same correlated color temperature, The blue light hazard of light B6c is changeable. For example, a straight line in FIG. 34A represents the coordinate point (ie, diamond point) of the blue light hazard relative to the correlated color temperature that can pass through multiple light rays B6c with different blue light hazards under the same correlated color temperature. In this embodiment, the correlated color temperature of the first sub-light V1c is lower than the correlated color temperature of the second sub-light V2c, and the first sub-light V1c and the second sub-light V2c are white light.

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

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

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 used to switch the light B6f between a first light VB1f and a second light VB2f, thereby changing at least one of the blue light hazard and the circadian action factor of the light B6f. Figure 36A illustrates the spectrum of the first light VB1f, and Figure 36B illustrates the spectrum of the second light VB2f. In the spectrum of the first light VB1f (refer to Figure 36A), the main peak wavelength of blue light (for example, 460 nm in Figure 36A) is greater than The main peak wavelength of blue light in the spectrum of the second light VB2f (refer to 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 (refer to FIG. 36A) is greater than the main peak in the spectrum of the second blue sub-ray V4f (refer to FIG. 36B) Wavelength (e.g. 447 nm). The control unit 620f is used to change the proportions of the red sub-ray V1f, the green sub-ray V2f and the first blue sub-ray V3f and the proportions of the red sub-ray V1f, the green sub-ray V2f and the second blue sub-ray V4f, thus changing the At least one of the blue light hazard, circadian rhythm action factor, and color rendering index of the first light VB1f and the second light VB2f.

In this embodiment, the light-emitting module 610f includes a plurality of light emitters E1f, E2f, E3f, and E4f, which respectively emit red sub-rays V1f, green sub-rays V2f, first blue sub-rays V3f, and second blue sub-rays V4f. The light emitters E1f and E2f may each include at least one electroluminescence element, at least one photoluminescence element, at least one color filter, or a combination thereof. The electroluminescent element is, for example, a light emitting diode chip 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 and a plurality of light emitters. The emitter E2f, the multiple light emitters E3f, and the multiple light emitters E4f are alternately arranged to form sub-pixels 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 action factor of the first light VB1f is greater than the circadian action factor of the second light VB2f, so , The user can select the first light VB1f or the second light VB2f according to the required circadian rhythm action 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 determine the color rendering index according to the required color rendering index. 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 hazard 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. Furthermore, the controller 620f is used to change the proportions of the red sub-light V1f, the green sub-light V2f and the first blue sub-light V3f to form different white light (that is, in FIGS. 37A, 37B, 38A, and 38B). , The first light rays VB1f respectively corresponding to different optical data). Furthermore, in this embodiment, the wavelength of the main peak in the spectrum of the first blue sub-ray V3f falls within the range of 460 nm to 480 nm. In this embodiment, the light source device 600f can provide light B6f having a high circadian rhythm action factor and a high color rendering index.

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

FIG. 39 is a schematic diagram of 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 can be a liquid crystal display panel or other suitable spatial light modulators. The backlight element 701 can be any of the light source devices mentioned above, and is used to illuminate the display 800.

FIG. 40 is a schematic diagram of a light source device according to another embodiment of the disclosure. FIG. 41A is a diagram of the relationship between the circadian action factor of the sub-light provided by the sub-light source of the first light source and the sunlight and the correlated color temperature in FIG. 40. FIG. 41B is the spectrum of the sub-light emitted by the sub-light source in FIG. 40. FIG. 41C shows the spectra of phosphor I, phosphor II, phosphor III, and phosphor IV of the sub-light source in FIG. 40. Fig. 41D is the spectrum of blue light-emitting diode wafers with peak wavelengths of 443 nm, 458 nm, and 461 nm in the sub-light source of Fig. 40. Referring to FIGS. 40 to 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. 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 sub-light source E32g and the sub-light source E4g include a light emitter E41g and a light emitter E42g covering the light emitter E41g. In this embodiment, the light emitter E11g is a blue light emitting diode chip with a peak wavelength of 458 nm, and the light emitter E12g has a resin that accounts for 15% of the light emitter E12g and a proportion of the light emitter E12g. For 85% of phosphors, 95% of the phosphor of the light emitter E12g is phosphor III, and 5% of the phosphor of the light emitter E12g is phosphor II. The light emitter E21g is a blue light-emitting diode chip with 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. , The specific gravity of the phosphor of the light emitter E22g is 90% of the phosphor I, and the specific gravity of the phosphor of the light emitter E22g is 10% of the phosphor IV. The light emitter E31g is a blue light emitting diode chip 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 chip 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-lights V1g, V2g, V3g, and V4g are, for example, white light, and the sub-lights V1g, V2g, V3g, and V4g are combined to form the first light B6g.

However, in other embodiments, the sub-light sources E1g, E2g, E3g, and E4g may include multiple light-emitting diode chips with different light colors, such as red light-emitting diode chips, green light-emitting diode chips, and blue light-emitting diode chips. 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 a white light. In other embodiments, the sub-light sources E1g, E2g, E3g, and E4g may include a plurality of light-emitting diode chips with different light colors, and multiple light-emitting diode chips with different light colors and covering at least one of these light-emitting diodes. Fluorescent body.

In this embodiment, the color rendering index of the first light B6g is greater than 80, and the circadian action factors of the sub-lights V1g, V2g, V3g, and V4g relative to the coordinates (CCT, CAF) of the correlated color temperature are shown in FIG. 41A. The spectra of V1g, V2g, V3g, and V4g are shown in Figure 41B, and the spectra of phosphors I, II, III, and IV are shown in Figure 41C, with blue peak wavelengths of 443 nm, 458 nm, and 461 nm, respectively. The spectrum of the color light emitting diode chip is shown in Fig. 41D.

In this embodiment, the light source device 700 further includes a control unit 720, which is 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 (CCT, CAF) of the circadian action factor of the first ray B6g relative to the correlated color temperature can be defined by the apex defined by the coordinates of the circadian action factor of the sub-rays V1g, V2g, V3g, and V4g relative to the correlated color temperature. The coordinates of the circadian action factors of the sub-rays V1g, V2g, V3g, and V4g relative 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 sub-rays like the first light B6g, and by adjusting the composition of the phosphor of this sub-light source and that of the blue light-emitting diode chip Type, the coordinate of the circadian action factor of the first ray B6g relative to the correlated color temperature can be any landmark that falls 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 the first light B6g, and by adjusting these sub-lights The composition of the phosphor of the light source and the type of the blue light-emitting diode chip, the coordinate of the circadian action factor of the first light B6g relative to the correlated color temperature (CCT, CAF) can be any index that falls in the area A1.

In this embodiment, the color rendering indices of the sub-rays V1g, V2g, V3g, and V4g are, for example, 81, 81, 81, and 84, respectively, 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 action factors of the sub-rays V1g, V2g, V3g, and V4g are, for example, 0.242, 0.534, 1.060, and 0.788, respectively, and the Duv values of the sub-rays V1g, V2g, V3g, and V4g are, for example, 0.01,- 0.01, -0.00 and -0.01.

In this embodiment, the coordinate of the circadian action factor of the first light B6g relative to the correlated color temperature can be any position in the area A1, so the light source device 700 can meet various usage requirements.

42 is a diagram showing the relationship between the sub-light provided by the sub-light source of the first light source of the first light source and the circadian action factor of sunlight with respect to the correlated color temperature according to another embodiment of the present disclosure. Referring to FIG. 42, 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 greater than 60, and the circadian action factor of the first light B6g relative to the coordinate (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) of the four circadian action factors relative to the coordinates of the correlated color temperature are formed by the apex Within an area A2. In this embodiment, the first ray B6 is formed by four sub-rays having the coordinates of the circadian action factor relative to the correlated color temperature at the four vertices shown in FIG. 42. However, in other embodiments, the first ray B6g may be one 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 circadian action factor of the first light B6g relative 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 of the relationship between the sub-light provided by the sub-light source of the first light source of the first light source and the circadian rhythm action factor of sunlight relative to the correlated color temperature according to another embodiment of the light source device of the present disclosure. Please refer 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 action factor of the first light B6g relative to the coordinate (CCT, CAF) of the correlated color temperature falls as shown in Figure 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, The coordinates of the six circadian action factors of 1.604) relative to the correlated color temperature are in an area A3 formed by the apex. However, in other embodiments, the first ray B6g may be caused by one 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 coordinates of the circadian action factor of the first light B6g relative 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 shows the circadian action factor of the sub-light provided by the sub-light source of the first light source of the light source device according to another embodiment of the present disclosure relative to the upper boundary and the lower boundary of the correlated color temperature and the circadian action factor of sunlight The graph of the correlation 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, and the main differences therebetween are as follows. In this embodiment, the circadian action factor of the first light B6g relative to the coordinate (CCT, CAF) of the correlated color temperature falls within a region, which has an upper boundary, a lower boundary, and falls on the upper boundary and the lower boundary. Coordinates between. In this embodiment, the upper boundary is established by fitting a quadratic function to the upper three vertices of FIG. 43, and the 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 of FIG. 43, and the coefficient of determination R ² is 1, for example. For example, the lower boundary is the function: CAF=-8E-09×(CCT) ² + 0.0002×(CCT)-0.3804.

FIG. 45 is a diagram showing the relationship between the sub-light provided by the sub-light source of the first light source of the light source device and the circadian rhythm action factor of sunlight with respect to the correlated color temperature according to another embodiment of the present disclosure. Please refer 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 light B6g is greater than 80, and the circadian action factor of the first light B6g with respect to the coordinates (CCT, CAF) of the correlated color temperature falls at (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 The coordinates of the six circadian action factors of) relative to the correlated color temperature are between the vertices of an area A4. However, in other embodiments, the first ray B6g may be caused by one 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 coordinates of the circadian action factor of the first light B6g relative 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, under the same correlated color temperature, the circadian action factor of the first light B6g falls within the range of ±0.15 of the circadian action factor of sunlight.

Fig. 46 is a diagram of the relationship between the sub-light provided by the sub-light source of the first light source of the light source device and the circadian rhythm action factor of sunlight relative to the correlated color temperature according to another embodiment of the present disclosure. Please refer 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 rhythm action factor of the first light B6 relative to the coordinate (CCT, CAF) of the correlated color temperature falls within the six circadian rhythms shown in FIG. 46 The coordinate of the action factor relative to the correlated color temperature is within the range of an area A5 formed by the apex. In this embodiment, the first ray B6 is formed by six sub-rays respectively having the coordinates of the circadian action factor at the six vertices shown in FIG. 46 with respect to the correlated color temperature. However, in other embodiments, the first ray B6g may be caused by one 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 coordinates of the circadian action factor of the first light B6g relative 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 one embodiment, the light emitter E1c may be the first light source 710 of any of the embodiments in FIGS. 40 to 46, and the first sub-ray V1c may be any of the embodiments in FIGS. 40 to 46. In one embodiment, the first light B6g and the light emitter E2c may be a second light source, and the second sub-light V2c may be the second light. The second light source is similar to the first light source 710, and the coordinates (CCT, CAF) of the circadian action factor of the second light with respect to the correlated color temperature can fall in the area A1 of FIG. 41A, the area A2 of FIG. 42 and the area A3 of 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 between them is that the circadian action factor of the second ray is relative to the coordinate of the correlated color temperature (CCT , CAF) is different from the coordinate of the correlated color temperature (CCT, CAF) of the circadian action factor of the first light B6g.

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 The light V1c) and the second light (second sub-light V2c) are used to output a third light (ie, light B6c).

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

In one embodiment, the coordinates (CCT, CAF) of the circadian action factor of the third light (ie ray B6c) with respect to the correlated color temperature fall below the trajectory of the circadian action factor of sunlight with respect to the correlated color temperature, for example, Fig. 25A is a circle or triangle below the trajectory of the circadian action factor of sunlight with respect to the correlated color temperature. In another embodiment, the coordinate of the circadian action factor of the third light (ie ray B6c) with respect to the correlated color temperature lies above the trajectory of the circadian action factor of sunlight with respect to the correlated color temperature, for example, as shown in FIG. 25A in the sun The circle or triangle above the trajectory of the light's circadian rhythm action factor relative to the correlated color temperature. In yet another embodiment, the coordinate of the circadian action factor of the third light (ie ray B6c) relative to the correlated color temperature falls on the trajectory of the circadian action factor of sunlight relative to the correlated color temperature, for example, as shown in FIG. 25A The circle or triangle on the trajectory of the circadian rhythm action factor relative to the correlated color temperature.

The above-mentioned control unit includes, for example, a central processing unit (CPU), a microprocessor (microprocessor), a digital signal processor (digital signal processor, DSP), a programmable controller, and a programmable logic device (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 program codes. These codes will be stored in a memory and executed by the control unit. Alternatively, in an embodiment, each function of the control unit may be implemented as one or more circuits. This disclosure does not limit the use of software or hardware to implement the functions of the control unit.

The aforementioned "physiological stimulus value" can be the aforementioned CS/P value, circadian action factor (CAF) or equivalent melanopic lux (EML), where EML=R×(CAF)×(Lux), where, R is a constant, when considering the response intensity of CS(λ) and P(λ), R=1.218. When the light source device is a lighting device, Lux can be illuminance, and when the light source device is a display, Lux can be brightness. The CS/P value in the above embodiment can be replaced by a circadian rhythm action factor or equivalent melanin lux. The circadian rhythm action factor in the above embodiment can be replaced by CS/P value or equivalent melanin lux.

In summary, the light source device in the embodiment of the present disclosure can control the light emitting module through the control unit to provide light with the same color temperature but different physiological stimulation values. The light-emitting module can also provide multiple sets of light of color temperature through multiple sets of light-emitting units, and each group of light of the same color temperature can also be switched between lights of different physiological stimulation values. In addition, the light source device in the embodiment of the present disclosure can also control the light-emitting module through the control unit to provide light with a physiological stimulus value difference of more than 5%, and these lights can have completely different color temperatures, or some of these lights have color temperatures. the same. In this way, the light source device can select and 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 of the present disclosure can be an illuminating device used for lighting or a backlight device used as a backlight of a display, but is not limited to this.

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, the color of the light of the light source device or the light-emitting module is the same, 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 multiple first lights are different from each other, and the circadian action factors of the multiple first lights are substantially the same as each other, the light source device can 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 can be changed, so the circadian action factor and the correlated color temperature of the light can follow a circadian rhythm different from that of sunlight. The circadian action factor of the light with the action factor relative to the trajectory of the correlated color temperature changes relative to the trajectory 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 rhythm action 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 the blue light hazard of the light can be changed. Among them, at 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 action factor relative to the correlated color temperature of the first light emitted by the first light source may fall within a region of the circadian action factor relative to the correlated color temperature map. Any position, so the light source device according to the embodiment can meet various usage requirements.

Although the present disclosure has been disclosed in the above embodiments, it is not intended to limit the present disclosure. Anyone with ordinary knowledge in the technical field can make some changes and modifications without departing from the spirit and scope of this disclosure. Therefore, The scope of protection of this disclosure shall be subject to those defined by the attached patent application scope.

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: light emitting module 120, 320, 420, 520, 620, 620c, 620f, 720: control unit 130: User Interface 140: connection interface 700: Light source device 701: Backlight element 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: the first light-emitting unit D2, D2’: the second light-emitting unit D3, D3’, D31, D32: third light-emitting unit D4, D4’: The fourth light-emitting unit D5, D5’: The fifth light-emitting unit D6’: The sixth light-emitting unit D7’: The seventh light-emitting unit D8’: Eighth light-emitting unit DM: Light source drive module DR: Data writing system DT: Time Management Information E1, E1a, E12a, E11a, E1c, E1f, E2c, E2, E2a, E2f, E3, E3a, E3d, E3f, E4, E4a, E4e, E4f, E5a, E6a, E7a, E11g, E12g, E21g, E22g, E31g, E32g, E41, E41g, E42, E42g: optical transmitter E1g, E2g, E3g, E4g: sub light source e1, e2, e3, e4, e5, e6, e7, e8: elliptical color temperature range L1, L1’, L13, L14, L15, VB1f: first light L2, L2’, L23, L24, L25, VB2f: second light L35: third light L45: Fourth ray L55: Fifth Ray L65: Sixth Ray L75: The seventh ray L85: Eighth Ray P1, P1’, P13, P14: Part One P2, P2’, P23, P24: Part Two S1, S2, S3, S4, S5, S6, S7, S8: Tolerance quadrilateral color temperature range Q1, Q2, Q3, Q4: vertex 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: sub-ray V1c, W1, W1’: the first sub-ray V1f: Red sub-ray V2c, W2, W2’: the second sub-ray V2f: Green sub-ray V3d, W3, W3’: the third sub-ray V3f: the first blue sub-ray V4e, W4, W4’: the fourth sub-ray V4f: the second blue sub-ray W5, W5’: the fifth sub-ray W6’: The sixth sub-ray W7’: The seventh sub-ray W8’: Eighth sub-ray

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

600: light source device

610: Light-emitting module

620: control unit

B6: light

E1, E2, E3, E4, E41, E42: optical transmitter

V1, V2, V3, V4, V41, V42: sub-ray

Claims (16)

A light source device includes: A first light source is used to provide a first light, wherein the circadian action factor of the first light relative to the coordinate (CCT, CAF) of the correlated color temperature falls between (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) of the six circadian rhythm action factors are relatively related The coordinates of the color temperature are in a first area formed by the apex. According to the light source device described in item 1 of the scope of patent application, wherein the color rendering index of the first light is greater than 60, and the circadian action factor of the first light is relative to the coordinate of the correlated color temperature (CCT, CAF). 2700±100 K, 0.696), (2700±100 K, 0.197), (6500±300 K, 0.759) and (6500±300 K, 1.229) of the four circadian rhythm action factors relative to the coordinates of the correlated color temperature are the apex points. Formed within a second area. The light source device described in item 1 of the scope of patent application further includes: A second light source for providing a second light, wherein the circadian action factor of the second light relative to the coordinate (CCT, CAF) of the correlated color temperature falls in the first area and is different from that of the first light source The coordinates of the circadian rhythm factor relative to the correlated color temperature (CCT, CAF). The light source device described in item 3 of the scope of patent application further includes: A control unit is used 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 described in item 4 of the scope of patent application, wherein the coordinate (CCT, CAF) of the circadian action factor of the third light rays with respect to the coordinate of the correlated color temperature falls on the trajectory of the circadian action factor of sunlight with respect to the correlated color temperature Below. The light source device described in item 4 of the scope of patent application, wherein the coordinate (CCT, CAF) of the circadian action factor of the third light rays with respect to the coordinate of the correlated color temperature falls on the trajectory of the circadian action factor of sunlight with respect to the correlated color temperature Above. The light source device described in item 4 of the scope of patent application, wherein the coordinate (CCT, CAF) of the circadian action factor of the third light with respect to the correlated color temperature falls on the track of the circadian action factor of sunlight with respect to the correlated color temperature . The light source device described in item 3 of the scope of patent application, wherein the circadian action factor of one of the first light and the second light relative to the coordinate (CCT, CAF) of the correlated color temperature falls on the circadian action factor of sunlight Relative to the bottom of the trajectory of the correlated color temperature, and the coordinates of the circadian action factor of the other of the first light and the second light relative to the correlated color temperature fall on the coordinate of the circadian action factor of the sunlight with respect to the trajectory of the correlated color temperature Above. The light source device described in item 1 of the scope of patent application, wherein the color rendering index of the first light is greater than 80, and the circadian action factor of the first light relative to the coordinate of the correlated color temperature (CCT, CAF) falls below ( 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) The coordinates of the six circadian rhythm action factors relative to the correlated color temperature are in a third area formed by the apex. A light source device includes: A light emitting module for providing a light; and A control unit for changing the ratio of a first sub-ray to a second sub-ray to form the light, so that the circadian action factor and the correlated color temperature of the light are relative to the circadian action factor different from sunlight The circadian action factor of the light in the trajectory of the correlated color temperature changes with respect to the trajectory of the correlated color temperature, wherein the circadian action factor of one of the first sub-ray and the second sub-ray is located in the sun relative to the coordinate of the correlated color temperature The circadian action factor of light is below the trajectory of the correlated color temperature, and the coordinates of the other circadian action factor of the first sub-ray and the second sub-ray relative to the correlated color temperature fall on the circadian action of the sunlight The factor is above the locus of the correlated color temperature. The light source device according to claim 10, wherein the control unit is used to change the 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 coordinate of the circadian action factor of the light with respect to the correlated color temperature is that the circadian action factors of the first sub-ray, the second sub-ray, the third sub-ray, and the fourth sub-ray are respectively located in relation to the correlated color temperature. The coordinates of the four vertices change within an area. The light source device according to claim 11, wherein the correlated color temperature of the first sub-light is less than the correlated color temperature of the second sub-light and less than the correlated color temperature of the fourth sub-light, and the correlated color temperature of the third sub-light Is less than the correlated color temperature of the second sub-ray and less than the correlated color temperature of the fourth sub-ray, the coordinates of the circadian action factors of the first sub-ray and the third sub-ray relative to the correlated color temperature fall on the day and night of the sunlight, respectively The circadian action factor relative to the opposite sides of the trajectory of the correlated color temperature, and the coordinates of the circadian action factor of the second sub-ray and the fourth sub-ray relative to the correlated color temperature respectively fall on the solar circadian action factor relative to Opposite sides of the locus of correlated color temperature. According to the light source device described in claim 10, the first sub-ray and the second sub-ray are white lights. A light source device includes: A first light source for providing a first light, wherein the circadian action factor of the first light is located in a region relative to the coordinate (CCT, CAF) of the correlated color temperature, and the region has an upper boundary, a lower boundary, and The coordinates of the circadian action factor relative to the correlated color temperature between the upper boundary and the lower boundary, where the circadian action factor is relative to the coordinate of the correlated color temperature (2700±100 K, 0.696), (4500±200 K, 1.348) And (6500±300 K, 1.604) are located on the upper boundary, and the coordinates of the circadian rhythm action factor relative to the correlated color temperature (2700±100 K, 0.197), (4500±200 K, 0.474) and (6500±300 K, 0.759) ) Is located on the lower boundary. For the light source device described in item 14 of the scope of patent application, the upper boundary and the lower boundary are each a quadratic function. The light source device described in item 14 of the scope of patent application further includes: A second light source for providing a second light, wherein the circadian action factor of the second light relative to the coordinate (CCT, CAF) of the correlated color temperature falls in the area and is different from the circadian rhythm of the first light The coordinate of the action factor relative to the correlated color temperature (CCT, CAF).

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