WO2018010467A1 - Light-emitting device and related projection system - Google Patents

Abstract

A light-emitting device (51, 100, 200, 300, 400, 600) and a projection system (50, 60), comprising: a first light source (112, 212, 312, 412, 612), a wavelength conversion device (120, 220, 320, 420, 620), a second light source (114, 214, 314, 614, 614), a regulating device (134, 634) and a light-source control unit (136, 636). The wavelength conversion device (120, 220, 320, 420, 620) includes a first segment region (122); the first segmented region (122) carries a first-color fluorescent material and a second-color fluorescent material; the fluorescent materials are excited by a light ray of the first light source (112, 212, 312, 412, 612) to emit light. A first-color light emitted by the second light source (114, 214, 314, 614, 614) is combined with a first-color light generated by the wavelength conversion device (120, 220, 320, 420, 620). The light-source control unit (136, 636) controls driving currents of the first light source (112, 212, 312, 412, 612) and the second light source (114, 214, 314, 614, 614), so that actual color coordinates and brightness level of the first-color light emitted by the light-emitting device (51, 100, 200, 300, 400, 600) match with predetermined standard color coordinates and brightness level.

Description

 Light-emitting device and related projection system Technical field

The present invention relates to the field of projection technology, and in particular, to a light emitting device and related projection system.

Background technique

The existing projection system generally includes a light-emitting device, a light valve and a control device, the light-emitting device emits three colors of light, red, green and blue, and the control device is configured to control the light valve to receive the light of the three colors and according to the input image. Data modulation image. However, the light of each color emitted by the existing light-emitting device or the image modulated by the light valve may have a phenomenon of poor white balance caused by color cast or insufficient brightness, which affects the projection screen effect of the projection system.

technical problem

In order to solve the problem that the prior art light-emitting device and the projection system have poor white balance and affect the display effect, it is necessary to propose a light-emitting device and a projection system with better illumination or display effects.

Technical solution

A light emitting device includes a first light source, a wavelength conversion device, a second light source, a light source control portion, and an adjustment device. The wavelength conversion device includes at least a first segmented region carrying a mixture of a first color fluorescent material and a second color fluorescent material, the first color fluorescent material being subjected to the first light source The light is excited to generate a first color light, and the second color fluorescent material is excited by the light of the first light source to generate a second color light, and the second color light is capable of separating the first color light from another color light . The second light source is configured to emit light of a first color, and the first color light emitted by the second light source is used for combining light with the first color light generated by the wavelength conversion device to form a first light emitted by the light emitting device. The first color light generated by the wavelength conversion device includes a first color light generated by the first color fluorescent material and a first color light of the second color light generated by the second color fluorescent material. The adjusting device is configured to acquire one or both of actual color coordinates and actual brightness of the first color light emitted by the light emitting device, and actual color coordinates and actual brightness of the first color light to be acquired One or both of the two are compared to one or both of the standard color coordinates and the standard brightness of the predetermined first color light. The light source control unit adjusts a driving current of the first light source and a driving current of the second light source when the two of the comparisons are not equal, such that the actual color coordinates of the first color light emitted by the light emitting device The actual brightness is consistent with the standard color coordinates and standard brightness of the first color light.

Preferably, the illuminating device further includes detecting means for detecting one or both of actual color coordinates and actual brightness of the first color light emitted by the illuminating device, and detecting the One or both of the actual color coordinates and the actual brightness of a color light are supplied to the adjustment device.

Preferably, when the two of the comparisons are not equal, the light source control unit adjusts a driving current of the first light source such that the brightness of the first color light generated by the wavelength conversion device is Y1′, and the wavelength conversion device is generated at this time. The color coordinate of the first color light is (x1', y1'), and the adjusting device further controls the light source control portion to adjust a driving current of the second light source such that the first color light emitted by the second light source The brightness is Y2'; the above parameters Y1', Y2', x1', y1' satisfy the following formula: Y1 + Y2 = Y1' + Y2'; (Y1 × x1/y1 + Y2 × x2 / y2) / (Y1/y1+ Y2/y2)=(Y1'×x1'/y1'+ Y2'×x2/y2)/( Y1'/y1+ Y2'/y2); and (Y1+Y2)/(Y1/y1+Y2/y2)=(Y1'+Y2')/(Y1'/y1+Y2'/y2); where: an initial state When the first color light emitted by the light emitting device reaches the standard color coordinate and the standard brightness, the brightness of the first color light generated by the wavelength conversion device is represented as Y1, and the color coordinate is represented as (x1, y1). The brightness of the first color light emitted by the second light source is represented as Y2, and the color coordinates are represented as (x2, y2).

Preferably, the initial state is a state in which the first color fluorescent material and the second fluorescent material are not aged.

Preferably, the wavelength conversion device further includes a second segment region carrying a third color fluorescent material, the third color fluorescent material being excited by the light of the first light source to generate a third Color light; the adjusting device is further configured to acquire an actual brightness of the third color light emitted by the second segment area, and a standard of the actual brightness of the acquired third color light and the predetermined third color light Comparing the brightness, the light source control portion adjusts a driving current of the first light source when the two of the comparisons are not equal, such that an actual brightness of the third color light emitted by the second segment region is The standard brightness of the third color light is the same.

Preferably, the first color fluorescent material is a red fluorescent material, the second color fluorescent material is a yellow fluorescent material, the third color fluorescent material is a green fluorescent material, and the first color light is red light. The second color light is yellow light, and the third color light is green light, and the second color light is capable of separating red light and green light.

Preferably, in an embodiment, the wavelength conversion device further includes a third segment region, the first light source emits a fourth color light, and the third segment region is fourth to the first light source The color light is transmitted or scattered to emit the fourth color light; the adjusting device is further configured to acquire an actual brightness of the fourth color light emitted by the third segment region, and the actual color of the acquired fourth color light The brightness is compared with a standard brightness of the predetermined fourth color light, the light source control portion adjusting a driving current of the first light source when the two of the comparisons are not equal, such that the third segment region emits a The actual brightness of the four color lights is consistent with the standard brightness of the fourth color light.

Preferably, in another embodiment, the wavelength conversion device further includes a third segment region, the third segment region carries a fourth color fluorescent material, and the first light source emits ultraviolet light, the first The four color fluorescent material is excited by the light of the first light source to generate a fourth color light; the adjusting device is further configured to acquire an actual brightness of the fourth color light emitted by the third segment region, and the obtained The actual brightness of the four color lights is compared with a predetermined brightness of the predetermined fourth color light, the light source control portion adjusting a driving current of the first light source when the two of the comparisons are not equal, such that the The actual brightness of the fourth color light emitted by the third segment area coincides with the standard brightness of the fourth color light.

Preferably, the fourth color light is blue light.

The present invention also provides a projection system including a light emitting device including a first light source, a wavelength conversion device, a second light source, a light source control portion, and an adjustment device. The wavelength conversion device includes at least a first segmented region carrying a mixture of a first color fluorescent material and a second color fluorescent material, the first color fluorescent material being subjected to the first light source The light is excited to generate a first color light, and the second color fluorescent material is excited by the light of the first light source to generate a second color light, and the second color light is capable of separating the first color light from another color light . The second light source is configured to emit light of a first color, and the first color light emitted by the second light source is used for combining light with the first color light generated by the wavelength conversion device to form a first light emitted by the light emitting device. The first color light generated by the wavelength conversion device includes a first color light generated by the first color fluorescent material and a first color light of the second color light generated by the second color fluorescent material. The adjusting device is configured to acquire one or both of actual color coordinates and actual brightness of the first color light emitted by the light emitting device, and actual color coordinates and actual brightness of the first color light to be acquired One or both of the two are compared to one or both of the standard color coordinates and the standard brightness of the predetermined first color light. The light source control unit adjusts a driving current of the first light source and a driving current of the second light source when the two of the comparisons are not equal, such that an actual color coordinate of the first color light emitted by the light emitting device is The actual brightness is consistent with the standard color coordinates and standard brightness of the first color light.

Preferably, the illuminating device further includes detecting means for detecting one or both of actual color coordinates and actual brightness of the first color light emitted by the illuminating device, and detecting the One or both of the actual color coordinates and the actual brightness of a color light are supplied to the adjustment device.

Preferably, when the two of the comparisons are not equal, the light source control unit adjusts a driving current of the first light source such that the brightness of the first color light generated by the wavelength conversion device is Y1′, and the wavelength conversion device is generated at this time. The color coordinate of the first color light is (x1', y1'), and the adjusting device further controls the light source control portion to adjust a driving current of the second light source such that the first color light emitted by the second light source The brightness is Y2'; the above parameters Y1', Y2', x1', y1' satisfy the following formula: Y1 + Y2 = Y1' + Y2'; (Y1 × x1/y1 + Y2 × x2 / y2) / (Y1/y1+ Y2/y2)=(Y1'×x1'/y1'+ Y2'×x2/y2)/( Y1'/y1+ Y2'/y2); and (Y1+Y2)/(Y1/y1+Y2/y2)=(Y1'+Y2')/(Y1'/y1+Y2'/y2); where: an initial state When the first color light emitted by the light emitting device reaches the standard color coordinate and the standard brightness, the brightness of the first color light generated by the wavelength conversion device is represented as Y1, and the color coordinate is represented as (x1, y1). The brightness of the first color light emitted by the second light source is represented as Y2, and the color coordinates are represented as (x2, y2).

Preferably, the initial state is a state in which the first color fluorescent material and the second fluorescent material are not aged.

Preferably, the wavelength conversion device further includes a second segment region carrying a third color fluorescent material, the third color fluorescent material being excited by the light of the first light source to generate a third Color light.

Preferably, the adjusting device is further configured to acquire an actual brightness of the third color light emitted by the second segment area, and a standard of the actual brightness of the acquired third color light and the predetermined third color light. Comparing the brightness, the light source control unit adjusts a driving current of the first light source when the two of the comparisons are not equal, such that an actual brightness of the third color light emitted by the second segment region is different from the first The standard brightness of the three color lights is the same.

Preferably, the first color fluorescent material is a red fluorescent material, the second color fluorescent material is a yellow fluorescent material, the third color fluorescent material is a green fluorescent material, and the first color light is red light. The second color light is yellow light, and the third color light is green light, and the second color light is capable of separating red light and green light.

Preferably, in an embodiment, the wavelength conversion device further includes a third segment region, the first light source emits a fourth color light, and the third segment region is fourth to the first light source The color light is transmitted or scattered to emit the fourth color light; the adjusting device is further configured to acquire an actual brightness of the fourth color light emitted by the third segment region, and the actual color of the acquired fourth color light The brightness is compared with a standard brightness of the predetermined fourth color light, the light source control portion adjusting a driving current of the first light source when the two of the comparisons are not equal, such that the third segment region emits a The actual brightness of the four color lights is consistent with the standard brightness of the fourth color light.

Preferably, in another embodiment, the wavelength conversion device further includes a third segment region, the third segment region carries a fourth color fluorescent material, and the first light source emits ultraviolet light, the first The four color fluorescent material is excited by the light of the first light source to generate a fourth color light; the adjusting device is further configured to acquire an actual brightness of the fourth color light emitted by the third segment region, and the obtained The actual brightness of the four color lights is compared with a predetermined brightness of the predetermined fourth color light, the light source control portion adjusting a driving current of the first light source when the two of the comparisons are not equal, such that the The actual brightness of the fourth color light emitted by the third segment area coincides with the standard brightness of the fourth color light.

Preferably, the fourth color light is blue light.

The present invention further provides a projection system including a light emitting device, a light valve, a light source control portion, and an adjusting device. The light emitting device includes a first light source, a wavelength conversion device, and a second light source. The wavelength conversion device includes at least a first segmented region carrying a mixture of a first color fluorescent material and a second color fluorescent material, the first color fluorescent material being subjected to the first light source The light is excited to generate a first color light, and the second color fluorescent material is excited by the light of the first light source to generate a second color light, and the second color light is capable of separating the first color light from another color light . The second light source is configured to emit light of a first color, and the first color light emitted by the second light source is used for combining light with the first color light generated by the wavelength conversion device to form a light emitted by the light emitting device. a first color light, the first color light generated by the wavelength conversion device includes a first color light generated by the first color fluorescent material and a first color light of a second color light generated by the second color fluorescent material . The light valve is configured to receive the first color light and the second color light emitted by the light emitting device and perform image modulation according to the predetermined image data to emit the modulated image light. The projection lens is configured to receive the modulated image light to display a predetermined image. The adjusting device is configured to acquire one or both of actual color coordinates and actual brightness of the modulated image light or the first color light in the predetermined image, and the obtained or the light valve Comparing one or both of the actual color coordinate and the actual brightness of the first color light in the predetermined image with one or both of the standard color coordinate and the standard brightness of the predetermined first color light, The light source control unit adjusts a driving current of the first light source and a driving current of the second light source when the two of the comparisons are not equal, such that the actual color coordinates and actuality of the first color light emitted by the light emitting device The brightness is consistent with the standard color coordinates and the standard brightness of the first color light.

Beneficial effect

Compared with the prior art, the illumination device and the projection system of the present invention adjust the driving current of the first light source and the driving current of the second light source to cause the modulated image light or the The actual color coordinate and the actual brightness of the first color light in the predetermined image are consistent with the standard color coordinate and the standard brightness, which can effectively improve the phenomenon of poor white balance caused by the color cast or insufficient brightness, and improve the projection display effect. .

DRAWINGS

1 is a schematic view showing the structure of a first embodiment of a light-emitting device of the present invention.

2 is a schematic plan view showing the structure of a wavelength conversion device.

Fig. 3 is a timing chart of light emission of various color lights emitted by the first light source via the wavelength conversion device.

4 is a timing chart of the compensation light emitted by the second light source.

Fig. 5 is a schematic diagram showing the spectral alignment of light emitted from the wavelength conversion device before and after aging of the fluorescent material.

Fig. 6 is a schematic view showing the structure of a second embodiment of the light-emitting device of the present invention.

Fig. 7 is a schematic view showing the structure of a third embodiment of the light-emitting device of the present invention.

Figure 8 is a schematic view showing the structure of a fourth embodiment of the light-emitting device of the present invention.

Fig. 9 is a timing chart of the compensation light emitted by the third light source shown in Fig. 8.

Figure 10 is a block schematic diagram of a first embodiment of a projection system of the present invention.

Figure 11 is a block schematic diagram of a second embodiment of the projection system of the present invention.

Main component symbol description

Light-emitting device 100, 200, 300, 400

Light source assembly 110

Wavelength conversion device 120, 220, 320, 420, 620

Detection adjustment device 130, 630

First light source 112, 212, 312, 412, 612

Second light source 114, 214, 314, 414, 614

Light combining device 140, 242, 340, 440

First segment area 122

Second segment area 124

Third segment area 126

Dodging and optical relay system 150, 250, 350, 450

Reflecting device 360, 460

Detection device 132, 632

Adjustment device 134,634

Light source control unit 136, 636

Projection system 50, 60

Light-emitting device 41, 61, 600

Light valve 52, 62

Projection lens 54, 64

Projection screen 55, 65

Control device 53

First time period T1

Second time period T2

The third period T3

Green light spectrum curve G1, G2

Blue light spectrum curve B1, B2

Yellow light spectrum curve Ye1, Ye2

Red light spectrum curve R1, R2

Embodiments of the invention

The technical solutions in the embodiments of the present invention are clearly and completely described in the following with reference to the accompanying drawings in the embodiments of the present invention. It is obvious that the described embodiments are only a part of the embodiments of the present invention, but not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative efforts are within the scope of the present invention. The features of the embodiments and examples described below can be combined with each other without conflict.

It should be noted that in the present invention, when one component is considered to be "connected" to another component, it may be directly connected to another component or may be indirectly connected to another component through the centering component.

All technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs, unless otherwise defined. The terminology used in the description of the present invention is for the purpose of describing particular embodiments and is not intended to limit the invention.

The above described objects, features and advantages of the present invention will become more apparent from the aspects of the appended claims.

In the following description, numerous specific details are set forth in order to provide a full understanding of the present invention, but the invention may be practiced in other ways than those described herein, and those skilled in the art can do without departing from the scope of the invention. The invention is not limited by the specific embodiments disclosed below.

Next, the present invention will be described in detail in conjunction with the schematic drawings, which detail the embodiments of the present invention.

For the sake of explanation, the cross-sectional view showing the structure of the device will not be partially enlarged, and the schematic view is only an example, and the scope of protection of the present invention should not be limited herein. In addition, the actual three-dimensional dimensions of length, width and depth should be included in the actual production.

The following is described in detail through several embodiments.

Light emitting device of the first embodiment

Please refer to FIG. 1. FIG. 1 is a schematic structural view of a first embodiment of a light-emitting device 100 of the present invention. The light emitting device 100 includes a light source assembly 110 and a wavelength conversion device 120.

The light source assembly 110 includes a first light source 112 and a second light source 114. The first light source 112 is an excitation light source for emitting excitation light, such as blue excitation light, and the first light source 112 may be a blue laser light source (or blue laser). In a modified embodiment, the first light source 112 may also be a light source of other colors, and is not limited to the blue light source. For example, the first light source 112 may be an ultraviolet laser source (or an ultraviolet laser). Thereby ultraviolet excitation light is emitted. Further, the first light source 112 is preferably a semiconductor laser light source for providing high-intensity excitation light.

The second light source 114 may be a compensation light source for generating compensation light, such as red compensation light, but not limited to red compensation light. When it is required to compensate light of other colors such as blue or green, the second light source The light source 114 can also be a complementary light source that emits light of other colors, such as blue or green. Further, the second light source 114 may be a light emitting diode light source, such as a red light emitting diode, emitting red compensation light.

In this embodiment, the light emitting device 100 further includes a light combining device 140, and the excitation light generated by the first light source 112 and the compensation light generated by the second light source 114 are combined by the light combining device 140. It is incident on the wavelength conversion device 120. Specifically, in the embodiment, the light combining device 140 is disposed between the first light source 112 and the wavelength conversion device 120, and may be a light combining film, and the light combining film is opposite to the The first light source may be obliquely disposed at an angle of 45 degrees, and the excitation light emitted by the first light source 112 is directly incident to the wavelength conversion device 120 through the light combining device 140. The second light source 114 is disposed above or below the light combining device 140, and the light combining device 140 is also disposed at an angle of 45 degrees with respect to the second light source 114, and the compensation light emitted by the second light source 114 It is incident on the light combining device 140 and is reflected by the light combining device 140 to be supplied to the wavelength conversion device 120.

The wavelength conversion device 120 is configured to receive light of the light source assembly 110 via the light combining device 140 and emit light of the at least two colors. Please refer to FIG. 2. FIG. 2 is a schematic diagram showing the planar structure of the wavelength conversion device 120. The wavelength conversion device 120 is a disk-shaped color wheel that includes at least two segmented regions (e.g., 122, 124, 126) disposed along its circumferential motion direction for respectively emitting the at least two types of light. In this embodiment, the wavelength conversion device 120 is a transmissive wavelength conversion device, that is, light of the light source assembly 110 is incident from one side of the wavelength conversion device 120, and the other side of the wavelength conversion device 120 is emitted. The at least two lights. It can be understood that the size of the at least two segment regions (such as 122, 124, 126) can be set to be the same or different according to actual needs.

In this embodiment, the number of the segmentation regions (122, 124, 126) is three, and the wavelength conversion device 120 includes a first segmentation region 122, a second segmentation region 124, and a third segmentation region 126.

The first segment region 122 carries a mixture of a first color fluorescent material and a second color fluorescent material, the first color fluorescent material being excited by light of the first light source 112 to generate a first color light, The second color fluorescent material is excited by the light of the first light source 112 to generate a second color light, and the second color light is capable of separating the first color light and the third color light. It can be understood that the first color fluorescent material and the second color fluorescent material may be uniformly mixed and disposed in the first segment region 122, or may be partitioned in the first segment region 122. In this embodiment, the first color fluorescent material is a red fluorescent material, and the second color fluorescent material is a yellow fluorescent material. The first color light is red light. The second color light is yellow light. The third color light is green light. It can be understood that the first color light generated by the wavelength conversion device 120 includes the first color light generated by the first color fluorescent material and the first color light of the second color light generated by the second color fluorescent material.

The second segmented region 124 carries a third color of fluorescent material that is excited by light from the first source to produce a third color of light. The third color fluorescent material is a green fluorescent material, and the third color light is green light.

The third segmentation region 126 receives the light of the first light source 112 and emits the fourth color light. The fourth color light is blue light. It can be understood that, in this embodiment, the first color light, the third color light, and the fourth color light are three primary color lights, such as three primary colors of red, green, and blue.

In one embodiment, the first light source 112 emits blue excitation light, and the third segmented region 126 may transmit or scatter the fourth color light of the first light source to emit fourth color light. Preferably, the third segment region 126 is provided with a scattering layer, and the scattering layer emits blue excitation light to the first light source 112, so that the third segment region 126 emits the fourth Color light.

In another embodiment, the first light source 112 emits ultraviolet excitation light, the third segmented region 126 carries a fourth color fluorescent material, and the fourth color fluorescent material is excited by light of the first light source. A fourth color of light is produced such that the third segmented region 126 emits the fourth color of light.

It can be understood that, in this embodiment, the second light source 114 is configured to emit the first color light. The first color light emitted by the second light source 112 and the first color light generated by the wavelength conversion device 120 are combined to form a first color light emitted by the light emitting device 100.

Please refer to FIG. 3 and FIG. 4. FIG. 3 and FIG. 4 are timing diagrams of light emission when the light-emitting device 100 of the present invention is in operation. Specifically, FIG. 3 is a light emission timing chart of various color lights emitted by the first light source 112 via the wavelength conversion device 120. The driving current value of the first light source 112 shown in FIG. 3 is different during the light emission of each color, but the invention is not limited thereto; during the light emission of each color, the driving current value of the first light source 112 may be the same. 4 is a timing diagram of the compensation light emitted by the second light source 114. When the illuminating device 100 is in operation, the wavelength converting device 120 continuously rotates with the center of its circumference as an axis, so that the first segment region 122, the second segment region 124, and the third segment region 126 are sequentially received. Light emitted from the light combining device 140.

In a first embodiment, the first light source is a blue light excitation light source, the first light source 112 emits blue light during a first time period T1, and the second light source 114 emits red light, the first segment The region 126 receives the blue light of the first light source 112 and the red light of the second light source 114 from the light combining device 140, the blue light exciting the red fluorescent material and the yellow fluorescent material of the first segment region 126 to generate red The light and the yellow light are emitted from the wavelength conversion device 120, and the red light of the second light source 114 directly exits the wavelength conversion device 120 via the first segment region 126. At this time, the illumination device 100 emits red. Light and yellow light. In the second time period T2, the first light source 112 emits blue light, and the second segment area 124 receives the blue light emitted by the light combining device 140, and the blue light excites the second segment area 124. The green fluorescent material generates green light and exits the wavelength conversion device 120, at which time the light emitting device 100 emits green light. In a third time period T3, the first light source 112 emits blue light, and the third segment region 126 receives the blue light emitted by the light combining device 140, and the blue light is performed via the third segment region 126. After the scattering, the light emitting device 100 emits blue light. As seen from the illumination timing of the light-emitting device 100, the red light emitted by the illumination device 100 includes the red light generated by the first light source 112 to excite the first segment region 126 during the first time period T1. The light (ie, the red light emitted by the wavelength conversion device 120) and the compensation red light emitted by the second light source 114 can effectively improve the red light intensity of the light-emitting device 100 caused by the low efficiency of the existing red fluorescent material. The phenomenon of increasing red light intensity. It can be understood that the red light emitted by the wavelength conversion device 120 includes the red light generated by the first light source 112 exciting the first color fluorescent material of the first segment region 126, and the first segment region 126 is excited. The second color of the fluorescent material produces a red light portion of the yellow light.

However, it can be understood that, in another embodiment, the first light source is an ultraviolet light excitation light source, and in the first time period T1, the first light source 112 emits ultraviolet light, and the second light source 114 emits red light. The first segment region 126 receives the ultraviolet light of the first light source 112 and the red light of the second light source 114 from the light combining device 140, and the ultraviolet light excites the red fluorescence of the first segment region 126. The material and the yellow fluorescent material generate red light and yellow light and are emitted from the wavelength conversion device 120. The red light of the second light source 114 directly exits the wavelength conversion device 120 via the first segment region 126. The light emitting device 100 emits red light and yellow light. In the second time period T2, the first light source 112 emits ultraviolet light, and the second segment region 124 receives the ultraviolet light emitted by the light combining device 140, and the ultraviolet light excites the second segment region 124. The green fluorescent material generates green light and exits the wavelength conversion device 120, at which time the light emitting device 100 emits green light. In a third time period T3, the first light source 112 emits ultraviolet light, and the third segment region 126 receives ultraviolet light emitted by the light combining device 140, and the ultraviolet light excites the third segment region 126. The blue fluorescent material generates blue light and exits the wavelength conversion device 120, at which time the light emitting device 100 emits blue light. As seen from the illumination timing of the light-emitting device 100, the red light emitted by the illumination device 100 includes the red light generated by the first light source 112 to excite the first segment region 126 during the first time period T1. The light (ie, the red light emitted by the wavelength conversion device 120) and the compensation red light emitted by the second light source 114 can effectively improve the red light intensity of the light-emitting device 100 caused by the low efficiency of the existing red fluorescent material. The phenomenon of increasing red light intensity. It can be understood that the red light emitted by the wavelength conversion device 120 includes the red light generated by the first light source 112 exciting the first color fluorescent material of the first segment region 126, and the first segment region 126 is excited. The second color of the fluorescent material produces a red light portion of the yellow light.

Further, the light emitting device 100 may further include a light homogenizing and optical relay system 150 that receives light emitted by the wavelength conversion device 120 for using the wavelength conversion device 120. The emitted light is homogenized, collected and shaped (eg, such that the projected spot of the beam conforms to a predetermined shape), etc., and then provided to the light valve of the projection system such that the light valve (eg, DMD/LCD/LCOS spatial light modulator) The light emitted by the wavelength conversion device 120 is modulated in accordance with predetermined image data such that the corresponding projection lens displays a predetermined image.

It can be understood that, in order to ensure that the illumination device 100 is adapted to the modulation timing of the light valve, the turn-on and turn-off timing of the light source component 110 and the rotation speed and timing of the wavelength conversion device 120 need to cooperate with each other, specifically, The opening and closing of the light source assembly 110, the rotation of the wavelength conversion device 120, and the modulation timing of the light valve may be uniformly controlled by the control device according to the input image data to adapt the three.

However, in the above-described light-emitting device 100, the fluorescent material of each segment region on the wavelength conversion device 120 may be aged as the use time becomes longer, which causes the first color light generated by the wavelength conversion device 120. There is less light with the second color light, the third color light, and the fourth color light. In view of the above, if the third color light and the fourth color light emitted by the wavelength conversion device 120 are reduced due to aging of the fluorescent material (it is understood that the fourth color light here is an implementation of exciting the phosphor by the excitation light source). In the fourth color light in the example, the third color light and the fourth color light may be supplemented by adjusting a driving current of the first light source 112.

Specifically, please refer to FIG. 5. FIG. 5 is a schematic diagram of spectral alignment of light emitted by the wavelength conversion device 120 before and after aging of the fluorescent material, and a broken line is a spectrum curve of light emitted by the wavelength conversion device 120 before aging of the fluorescent material. The figure (which may also be a standard curve), the solid line is a spectrum curve of the light emitted by the wavelength conversion device 120 after the fluorescent material is aged. Since the waveforms of the green light spectral curves G1 and G2 before and after the aging of the fluorescent material are similar, the third color light (ie, green light) is supplemented by adjusting the driving current of the first light source 112 during the second time period T2. ), the adjusted green light spectral curve may substantially coincide with the green light spectral curve G1 of the standard curve, and the color coordinates of the green light before and after the adjustment are substantially unchanged. Similarly, since the waveforms of the blue light spectrum curves B1 and B2 before and after the aging of the fluorescent material are similar, the fourth color light is supplemented by adjusting the driving current of the first light source 112 during the third time period T3 (ie, The blue light) can make the adjusted blue light spectrum curve substantially coincide with the blue light spectrum curve B1 of the standard curve, and the color coordinates of the blue light before and after the adjustment are substantially unchanged.

Specifically, as shown in FIG. 1 , the light emitting device 100 may include a detecting and adjusting device 130. The detection adjustment device 130 includes a detection device 132, an adjustment device 134, and a light source control unit 136. The detecting device 132 detects the actual brightness of the third color light emitted by the second segment region 124 of the light emitting device 100, and detects the actual brightness of the third color light emitted by the second segment region 124. Provided to the adjustment device 134. The adjusting device 134 compares the actual brightness of the acquired third color light with the standard brightness of the predetermined third color light, and controls the light source control unit 136 to adjust the same when the two of the comparisons are not equal. The driving current of the first light source 112 is such that the actual brightness of the third color light emitted by the second segment region 124 coincides with the standard brightness of the third color light.

Preferably, the detecting device 132 detects the actual brightness of the third color light emitted by the second segment area 124 of the light emitting device 100, and detects the detected third color light emitted by the second segment area 124. The actual brightness is provided to the adjustment device 134. The adjusting device 134 compares the actual brightness of the acquired third color light with a standard brightness of the predetermined third color light, and controls the light source control portion 136 to adjust the said brightness when the two of the comparisons are not equal a driving current of the first light source 112 (such as increasing a driving current of the first light source 112) such that an actual brightness of the third color light emitted by the second segment region 124 and a standard brightness of the third color light Consistent.

It can be understood that the predetermined brightness of the predetermined third color light may be pre-stored in a storage unit (not shown), and the adjusting device 134 may retrieve the predetermined third color light from the storage unit. Standard brightness for comparison. The predetermined brightness of the predetermined third color light may be the second segment area 124 of the light emitting device 100 in an initial state (eg, before the fluorescent material of the second segment area 124 is aged, specifically may be set to emit light The standard brightness of the third color light emitted by the device 100 before shipment.

Further, the detecting device 132 may further detect the actual brightness of the fourth color light emitted by the third segment region 126 of the light emitting device 100, and detect the detected fourth segment region 126 issued by the fourth The actual brightness of the color light is provided to the adjustment device 134. The adjusting device 134 compares the actual brightness of the acquired fourth color light with a standard brightness of the predetermined fourth color light, and controls the light source control unit 136 to adjust the same when the two of the comparisons are not equal. The driving current of the first light source 112 is such that the actual brightness of the fourth color light emitted by the third segment region 126 coincides with the standard brightness of the fourth color light.

Preferably, the detecting device 132 detects the actual brightness of the fourth color light emitted by the third segment region 126 of the light emitting device 100, and detects the detected fourth color light emitted by the third segment region 126. The actual brightness is provided to the adjustment device 134. The adjusting device 134 compares the actual brightness of the acquired fourth color light with a predetermined standard brightness of the third color light, and controls the light source control unit 136 to adjust the same when the two of the comparisons are not equal. Driving current of the first light source 112 (such as increasing the driving current of the first light source 112) such that the actual brightness of the fourth color light emitted by the third segment region 126 and the standard of the fourth color light The brightness is consistent.

It can be understood that the predetermined brightness of the predetermined fourth color light may be pre-stored in a storage unit, and the adjusting device 134 may retrieve the predetermined brightness of the predetermined fourth color light from the storage unit for performing Comparison. The predetermined brightness of the predetermined fourth color light may be a third segment region of the light emitting device 100 in an initial state (eg, before the fluorescent material of the third segment region is aged, specifically, the light emitting device 100 may be The standard brightness of the fourth color light emitted before leaving the factory.

However, if the first color light and the second color light emitted by the wavelength conversion device 120 become less due to aging of the fluorescent material, the aged yellow and red light spectral curves Ye2, R2 as indicated by the solid line, due to the wavelength The first segmented region 122 of the conversion device 120 includes the first color fluorescent material and the second color fluorescent material (ie, a red fluorescent material and a yellow fluorescent material), the first color fluorescent material and the second color The degree of aging of the fluorescent material with time is different, and simply adjusting the driving current of the first light source 112 does not make the adjusted yellow and red spectral curves coincide with the yellow and red spectral curves Ye1 and R1 of the standard curve. Therefore, simply increasing the driving current of the first light source 112, although the brightness of the first color light generated by the wavelength conversion device 120 can be increased, the color coordinates of the first color light generated by the wavelength conversion device 120 cannot be adjusted until the fluorescent material is aged. Color coordinate value.

The first color light emitted by the light emitting device 100 is synthesized by the first color light generated by the wavelength converting device 120 and the first color light emitted by the second light source 114. In the present invention, the color of the first color light emitted by the second light source 114 is The coordinates do not change as the brightness of the second source of light (i.e., the brightness of the first color light it emits) changes.

In order to make the brightness and color coordinates of the first color light emitted by the light-emitting device 100 reach the state before the phosphor aging, on the basis of adjusting the driving current of the first light source 112, it is further required to further adjust the second light source 114. Drive current.

Specifically, the detecting device 132 detects one or both of the actual color coordinate and the actual brightness of the first color light emitted by the light emitting device 100, and detects the actual color coordinate and the actual brightness of the first color light. One or both of them are provided to the adjustment device 134. The adjusting device 134 combines one or both of the actual color coordinate and the actual brightness of the acquired first color light with one or both of the standard color coordinate and the standard brightness of the predetermined first color light. Comparing, and controlling the light source control portion 136 to adjust the driving current of the first light source 112 and the driving current of the second light source 114 when the two are not equal (such as increasing the driving of the first light source 112) a current and a driving current of the second light source 114, or a driving current of the first light source 112 to decrease a driving current of the second light source 114, etc., such that the first color light emitted by the light emitting device 100 The actual color coordinates and actual brightness are consistent with the standard color coordinates and standard brightness of the first color light. It can be understood that, as described above, in the embodiment, the first color light emitted by the light emitting device 100 includes the first color light emitted by the second light source 114 and the first color generated by the wavelength conversion device 120. Color light, and the first color light generated by the wavelength conversion device 120 includes a first color light generated by the first color fluorescent material and a first color light generated by the second color fluorescent material .

Preferably, in the embodiment, the detecting device 132 detects the actual color coordinates and the actual brightness of the first color light emitted by the light emitting device 100, and detects the actual color coordinates and actuality of the first color light detected. Brightness is provided to the adjustment device 134. The adjusting device 134 compares the actual color coordinate and the actual brightness of the acquired first color light with the standard color coordinate and the standard brightness of the predetermined first color light, respectively, and is not equal in any one of the comparisons. Controlling the light source control unit 136 to adjust the driving current of the first light source 112 and the driving current of the second light source 114 such that the actual color coordinates and the actual brightness of the first color light emitted by the light emitting device 100 are respectively It conforms to the standard color coordinates and the standard brightness of the first color light.

It can be understood that the standard color coordinate and the standard brightness of the predetermined first color light may be pre-stored in a storage unit, and the adjusting device 134 may retrieve the predetermined first color light from the storage unit. Standard color coordinates and standard brightness for comparison. The predetermined color coordinate and the standard brightness of the predetermined first color light may be the first segment region 122 of the light emitting device 100 in an initial state (eg, before the fluorescent material of the first segment region 122 is aged, specific It can be set as the standard color coordinate and standard brightness of the first color light emitted by the light-emitting device.

Further, when the initial state is set, the brightness of the first color light generated by the wavelength conversion device 120 is Y1, the color coordinate is (x1, y1), and the first color light emitted by the second light source 114 The brightness is Y2, and the color coordinates are (x2, y2). When the two of the above comparisons are not equal, the light source control unit 136 adjusts the driving current of the first light source 112 so that the first color light generated by the wavelength conversion device 120 The brightness is Y1', and the color coordinate of the first color light generated by the wavelength conversion device 120 is (x1', y1'), and the adjusting device 134 controls the light source control portion 136 to adjust the second light source. The driving current of 114 causes the brightness of the first color light emitted by the second light source 114 to be Y2', and the color coordinate of the first color light emitted by the second light source 114 is still (x2, y2). In order to ensure that the actual color coordinate and the actual brightness of the adjusted first color light are respectively consistent with the standard color coordinate and the standard brightness of the first color light, the above parameters Y1, Y2, x1, y1, x2, y2, Y1' , Y2', x1', y1' satisfy the following three formulas:

Y1+Y2=Y1'+Y2’;

(Y1×x1/y1+ Y2×x2/y2)/( Y1/y1+ Y2/y2)=(Y1’×x1’/y1’+ Y2'×x2/y2)/(Y1'/y1+Y2'/y2); and

(Y1 + Y2) / (Y1/y1 + Y2 / y2) = (Y1' + Y2') / (Y1' / y1 + Y2' / y2).

Wherein, the first color fluorescent material and the second color fluorescent material gradually age, and the first color light generated by the irradiation of the equal intensity excitation light gradually decreases, and the degree of aging of the two is inconsistent, so The color coordinates of the mixed light of the first color light produced by the person also change, but this is a long process. The amount of light of the first color detected by the detecting means is constant for a short period of time. It can be considered that the first color fluorescent material and the second color fluorescent material are in a stable state in the short time, and the color coordinates of the mixed light of the first color light generated by the two do not change even if the intensity of the excitation light is strong. A change has occurred. That is, although the color coordinates of the first color light generated by the wavelength conversion device 120 are changed before the aging of the fluorescent material, and before the adjustment of the driving current of the first light source 112, the short time The color coordinates of the first color light generated by the wavelength conversion device 120 are constant. Therefore, the color coordinates (x1', y1') of the first color light described above can be measured by the detecting means 132. Further, Y1' and Y2' are calculated based on the measured color coordinates (x1', y1') and the above formula.

Further, the detecting device 132 may be a detecting device such as a spectrometer. However, in a modified embodiment, the light emitting device 100 may not include the detecting device, that is, the first color light and the third color that can be emitted by the peripheral detecting device to the light emitting device 100. The light and the fourth color light detect the actual brightness and the actual color coordinates, but the light emitting device may include an input device through which the first color light and the third color detected by the peripheral detecting device may be detected Light and fourth color light are provided to the adjustment device 132 such that the adjustment device 132 performs the steps of comparison and adjustment.

Compared with the prior art, the light-emitting device 100 of the present invention adjusts the actual color coordinates of the first color light emitted by the light-emitting device 100 by adjusting the driving current of the first light source and the driving current of the second light source 114. The actual brightness is consistent with the standard color coordinate and the standard brightness, etc., which can effectively improve the phenomenon of poor white balance caused by the color cast and insufficient brightness, and improve the projection display effect by the light-emitting device 100. In particular, for the light-emitting device 100 that uses the second light source 114 to fill light, the arrangement of the second light source 114 can reduce the phenomenon that the display effect is insufficient due to insufficient light proportion of a certain color.

Light emitting device of second embodiment

Please refer to FIG. 6. FIG. 6 is a schematic structural diagram of a second embodiment of a light emitting device 200 of the present invention. The light-emitting device 200 has substantially the same structure as the light-emitting device 100 of the first embodiment, that is, the above description for the light-emitting device 100 can be basically applied to the light-emitting device 200, and details are not described herein again. The difference between the light-emitting device 200 and the light-emitting device 100 of the first embodiment is that the second light source 214 and the first light source 212 of the light-emitting device 200 are disposed on different sides of the wavelength conversion device 220, specifically, the first The excitation light generated by a light source 212 passes through the wavelength conversion device 220 and then the compensation light generated by the second light source 214 is combined by the light combining device 242 and then supplied to the subsequent light homogenizing and optical relay system. 250.

Light-emitting device of the third embodiment

Please refer to FIG. 7. FIG. 7 is a schematic structural diagram of a third embodiment of a light-emitting device 300 of the present invention. The light-emitting device 300 has substantially the same structure as the light-emitting device 100 of the first embodiment, that is, the above-described description for the light-emitting device 300 can be basically applied to the light-emitting device 300, and details are not described herein again. The difference between the illuminating device 300 and the illuminating device 100 of the first embodiment is that the wavelength converting device is a reflective wavelength converting device. Specifically, the light emitted by the first light source 312 is reflected by a reflecting device 360. Provided to the wavelength conversion device 320. The light emitted by the wavelength conversion device 320 and the compensation light generated by the second light source 314 are combined by the light combining device 340 and then supplied to the subsequent leveling and optical relay system 350.

Light-emitting device of the fourth embodiment

Please refer to FIG. 8. FIG. 8 is a schematic structural view of a fourth embodiment of a light-emitting device 400 of the present invention. The light-emitting device 400 has substantially the same structure as the light-emitting device 300 of the third embodiment, that is, the above description for the light-emitting device 300 can be basically applied to the light-emitting device 400, and details are not described herein again. The illumination device 200 differs from the illumination device 300 of the third embodiment mainly in that the light source assembly 410 further includes a third light source 416, which is also a compensation light source for generating compensation light. Specifically, in this embodiment, the third light source 416 is a blue light compensation light source that emits blue light.

The excitation light generated by the first light source 412 is reflected by the reflection device 460 and supplied to the wavelength conversion device 420. The light emitted by the wavelength conversion device 420 and the compensation light generated by the second light source 414 and the third light source 416 are combined by the light combining device 440 and then supplied to the subsequent uniform light and optical relay system. 450.

Specifically, the output light of the wavelength conversion device 420 and the second light source 412 of the light-emitting device 400 is substantially the same as the output light timing of the wavelength conversion device 120 and the second light source 112 of the first embodiment shown in FIGS. 3 and 4 . , will not repeat them here. For the illumination timing diagram of the third light source 416, please refer to FIG. 9. The third light source 416 emits blue light for the third time period T3 for compensating for the blue light.

Projection system of the first embodiment

Please refer to FIG. 10, which is a block diagram of a first embodiment of a projection system 50 of the present invention. The projection system 50 includes a light emitting device 51, a light valve 52, a control device 53, a projection lens 54, and a projection screen 55. The illumination device 51 is for providing light to the light valve 52. The light valve 52 can be, but is not limited to, a DMD/LCD/LCOS spatial light modulator.

The control device 53 is for receiving input image data and controlling the light valve 52 for image modulation. The light valve 52 is configured to receive light emitted by the light emitting device and perform image modulation according to predetermined image data to emit modulated image light. The projection lens 54 receives the modulated image light to display a predetermined image on the projection screen 55. The light-emitting device 51 can employ the light-emitting devices 100, 200, 300, and 400 of any of the first to fourth embodiments described above.

Projection system of the second embodiment

Please refer to FIG. 11, which is a block diagram of a second embodiment of a projection system 60 of the present invention. The main difference between the projection system 60 and the projection system 50 of the first embodiment is that the detection device 632 of the detection adjustment device 630 is disposed adjacent to one of the light valve 62, the projection lens 64, or the projection screen 65. The detecting device 632 is configured to detect one of an actual image coordinate and an actual brightness of the modulated image light emitted by the light valve 62 or the first color light in the predetermined image displayed by the projection lens 64 and the projection screen 65. Two kinds, and a standard of one or two of the actual color coordinates and the actual brightness of the first color light emitted by the light valve 62 or the predetermined image to be obtained and a predetermined standard of the first color light Comparing one or two of the color coordinates and the standard brightness, and controlling the light source control portion 636 to adjust the driving current of the first light source 612 and the second light source 614 when the two of the comparisons are not equal Driving current to cause the modulated image light emitted by the light valve 62 or the actual color coordinate and actual brightness of the first color light in the predetermined image displayed by the projection lens 64 and the projection screen 65 to be related to the first color light The standard color coordinates are the same as the standard brightness.

Preferably, in the embodiment, the detecting device 632 detects the modulated image light emitted by the light valve 62 or the actual color coordinates and actual color of the first color light in the predetermined image displayed by the projection lens 64 and the projection screen 65. Brightness, and the detected actual color coordinates and actual brightness of the first color light are supplied to the adjustment device 65. The adjusting device 634 compares the actual color coordinate and the actual brightness of the acquired first color light with the standard color coordinate and the standard brightness of the predetermined first color light, respectively, and is not equal in any one of the comparisons. The light source control unit 636 controls the driving current of the first light source 612 and the driving current of the second light source 614 to cause the modulated image light emitted by the light valve 62 or the projection lens 64 and the projection screen. 65. The actual color coordinates and the actual brightness of the first color light in the predetermined image displayed are consistent with the standard color coordinates and the standard brightness of the first color light, respectively.

Specifically, as shown in FIG. 3 and FIG. 4, the wavelength conversion device 620 emits the first color light and the second color light in the first time period T1, then emits the third color light in the second time period T2, and in the third The period T3 emits a fourth color light. The light valve receives the first color light and the second color light emitted by the light emitting device 600 in a first time period T1 and performs image modulation according to the first predetermined image data to emit the first modulated image light, and then the light valve is The second time period T2 receives the third color light emitted by the light emitting device 600 and performs image modulation according to the second predetermined image data to emit the second modulated image light, and the light valve receives the light emitting device 600 in the third time period T3. The emitted fourth color light is image modulated according to the third predetermined image data to emit the third modulated image light. The projection lens 64 receives the first, second, and third modulated image rays to display a predetermined image on the projection screen 65.

It can be understood that the first predetermined image data, the second predetermined image data, and the third predetermined image data may be test image data, and the test image data may be image data corresponding to a single color image, such as red test image data, green. The test image data or the blue test image data may correspond to the red test image, the green test image, or the blue test image.

The predetermined color coordinate and standard brightness of the predetermined first color light may be pre-stored in a storage unit, and the adjusting device 634 may retrieve the predetermined color coordinate of the predetermined first color light from the storage unit. And standard brightness for comparison. The predetermined color coordinate and the standard brightness of the predetermined first color light may be in an initial state (such as before the fluorescent material of the wavelength conversion device is aged, specifically before the projection system is shipped), the light valve 62 is emitted. The image light rays or the standard color coordinates and standard brightness of the first color light in the predetermined image displayed by the projection lens 64 and the projection screen 65 are modulated.

Further, the detecting device 632 may be a detecting device such as a spectrometer. However, in a modified embodiment, the projection system 60 may not include the detecting device 632, that is, the modulated image light or the projection that can be emitted by the peripheral detecting device to the light valve 62. One or both of the actual color coordinates and the actual brightness of the first color light in the predetermined image displayed by the lens 64 and the projection screen 65 are detected, but the projection system 60 may include an input device through which the input device may The first color light, the third color light, and the fourth color light detected by the peripheral detecting device are supplied to the adjusting device 634, so that the adjusting device 634 performs steps of comparison and adjustment.

In addition, it can be understood that, in the modified embodiment, the position and optical path design of the first light source 612, the second light source 614, the wavelength conversion device 620, and the like of the light-emitting device 600 can refer to the second, third, and fourth embodiments of the present application. The position of each component and the optical path design in the light-emitting device 100.

Compared to the prior art, the projection system 60 of the present invention adjusts the driving current of the first light source 612 and the driving current of the second light source 614 to cause the modulated image light or the first color in the predetermined image. One or two of the actual color coordinate and the actual brightness of the light, consistent with one or both of the standard color coordinate and the standard brightness, can effectively improve the phenomenon of poor white balance caused by color cast or insufficient brightness. , improve the projection display. In particular, for the light-emitting device 600 that uses the second light source 614 to fill light and the projection suction, the second light source 614 is provided to reduce the display effect caused by insufficient color ratio of a certain color.

It is to be understood that those skilled in the art can make other variations and the like in the spirit of the present invention for use in the design of the present invention as long as it does not deviate from the technical effects of the present invention. All changes made in accordance with the spirit of the invention are intended to be included within the scope of the invention.

Claims (11)

 A lighting device, characterized in that the lighting device comprises:

First light source;

a wavelength conversion device comprising at least a first segmented region carrying a mixture of a first color fluorescent material and a second color fluorescent material, the first color fluorescent material being subjected to the first light source The light is excited to generate a first color light, and the second color fluorescent material is excited by the light of the first light source to generate a second color light, and the second color light is capable of separating the first color light from another color light ;

a second light source for emitting a first color light, wherein the first color light emitted by the second light source is used for combining light with the first color light generated by the wavelength conversion device to form a first light emitted by the light emitting device Color light, the first color light generated by the wavelength conversion device includes first color light generated by the first color fluorescent material and first color light of second color light generated by the second color fluorescent material;

An adjusting device, configured to acquire one or both of actual color coordinates and actual brightness of the first color light emitted by the light emitting device, and actual color coordinates and actual brightness of the first color light to be acquired One or two comparisons with one or both of the standard color coordinates and the standard brightness of the predetermined first color light; and

a light source control unit configured to adjust a driving current of the first light source and a driving current of the second light source when the two of the comparisons are not equal, such that an actual color coordinate of the first color light emitted by the light emitting device And the actual brightness is consistent with the standard color coordinates and the standard brightness of the first color light.

2. The illuminating device according to claim 1, wherein the illuminating device further comprises detecting means for detecting one of an actual color coordinate and an actual brightness of the first color light emitted by the illuminating device One or two kinds, and the actual color coordinates and the actual brightness of the detected first color light are supplied to the adjusting device.

3. The illuminating device according to claim 1, wherein the light source control portion adjusts a driving current of the first light source so that a brightness of the first color light generated by the wavelength converting device is different when the two of the comparisons are not equal For Y1', it is assumed that the color coordinate of the first color light generated by the wavelength conversion device is (x1', y1'), and the adjusting device further controls the light source control portion to adjust the driving current of the second light source so that The brightness of the first color light emitted by the second light source is Y2';

Each of the above parameters Y1', Y2', x1', y1' satisfies the following formula:

Y1+Y2=Y1'+Y2’;

(Y1×x1/y1+ Y2×x2/y2)/( Y1/y1+ Y2/y2)

= (Y1' × x1' / y1' + Y2' × x2 / y2) / (Y1' / y1 + Y2' / y2);

(Y1+Y2)/(Y1/y1+Y2/y2)=(Y1'+Y2')/(Y1'/y1+Y2'/y2);

Wherein, in an initial state, when the first color light emitted by the light emitting device reaches the standard color coordinate and the standard brightness, the brightness of the first color light generated by the wavelength conversion device is represented as Y1, and the color coordinate is expressed as (x1, y1), the brightness of the first color light emitted by the second light source is represented as Y2, and the color coordinate is expressed as (x2, y2).

4. The light-emitting device according to claim 3, wherein the initial state is a state in which the first color fluorescent material and the second fluorescent material are not aged.

5. The illuminating device according to claim 1, wherein said wavelength converting device further comprises a second segmented region, said second segmented region carrying a third color fluorescent material, said third color fluorescent material receiving Generating the light of the first light source to generate a third color light;

The adjusting device is further configured to acquire an actual brightness of the third color light emitted by the second segment area, and to obtain the actual brightness of the acquired third color light and a standard brightness of the predetermined third color light Comparing, the light source control portion adjusts a driving current of the first light source when the two of the comparisons are not equal, such that an actual brightness of the third color light emitted by the second segment region and the third color The standard brightness of light is the same.

6. The illuminating device according to claim 5, wherein the first color fluorescent material is a red fluorescent material, the second color fluorescent material is a yellow fluorescent material, and the third color fluorescent material is a green fluorescent material. The first color light is red light, the second color light is yellow light, and the third color light is green light, and the second color light is capable of separating red light and green light.

7. The illuminating device according to claim 1, wherein said wavelength converting device further comprises a third segmented region, said first light source emitting a fourth color light, said third segment region being said first The fourth color light of the light source is transmitted or scattered to emit the fourth color light; the adjusting device is further configured to acquire the actual brightness of the fourth color light emitted by the third segment region, and the fourth color light to be acquired The actual brightness is compared with a predetermined brightness of a predetermined fourth color light, the light source control portion adjusting a driving current of the first light source when the two of the comparisons are not equal, such that the third segment The actual brightness of the fourth color light emitted by the area coincides with the standard brightness of the fourth color light.

8. The illuminating device according to claim 1, wherein the wavelength converting device further comprises a third segmented region, the third segmented region carries a fourth color fluorescent material, and the first light source emits ultraviolet light, The fourth color fluorescent material is excited by the light of the first light source to generate a fourth color light; the adjusting device is further configured to acquire an actual brightness of the fourth color light emitted by the third segment region, and Comparing the actual brightness of the acquired fourth color light with a predetermined brightness of the predetermined fourth color light, the light source control portion adjusting a driving current of the first light source when the two of the comparisons are not equal, such that The actual brightness of the fourth color light emitted by the third segment area coincides with the standard brightness of the fourth color light.

9. A lighting device according to claim 7 or 8, wherein the fourth color light is blue light.

10. A projection system comprising a light-emitting device, characterized in that the light-emitting device employs the projection system of any one of claims 1-9.

11. A projection system comprising:

Lighting device, including:

First light source;

a wavelength conversion device comprising at least a first segmented region carrying a mixture of a first color fluorescent material and a second color fluorescent material, the first color fluorescent material being subjected to the first light source The light is excited to generate a first color light, and the second color fluorescent material is excited by the light of the first light source to generate a second color light, and the second color light is capable of separating the first color light from another color light ;

a second light source for emitting a first color light, wherein the first color light emitted by the second light source is used for combining light with the first color light generated by the wavelength conversion device to form a first light emitted by the light emitting device Color light, the first color light generated by the wavelength conversion device includes first color light generated by the first color fluorescent material and first color light of second color light generated by the second color fluorescent material;

a light valve, configured to receive the first color light and the second color light emitted by the light emitting device, and perform image modulation according to predetermined image data to emit modulated image light;

a projection lens that receives the modulated image light to display a predetermined image;

An adjusting device, configured to acquire one or both of an actual color coordinate and an actual brightness of the modulated image light or the first color light in the predetermined image, and the obtained light valve or the Comparing one or both of the actual color coordinates and the actual brightness of the first color light in the predetermined image with one or both of the standard color coordinates and the standard brightness of the predetermined first color light;

The light source control unit is configured to adjust a driving current of the first light source and a driving current of the second light source when the two of the comparisons are not equal, such that the actual color coordinates of the first color light emitted by the light emitting device The actual brightness is consistent with the standard color coordinates and standard brightness of the first color light.