WO2022062479A1

WO2022062479A1 - Combined light source device and projection system

Info

Publication number: WO2022062479A1
Application number: PCT/CN2021/099037
Authority: WO
Inventors: 和建航; 尹蕾
Original assignee: 成都极米科技股份有限公司
Priority date: 2020-09-27
Filing date: 2021-06-09
Publication date: 2022-03-31
Also published as: CN114326274A

Abstract

A combined light source device and a projection system. A basic light source module (100) emits a first path of light formed by combining three primary lights, and an additional light source module (101) is used to emit any primary light of the three primary lights. At least one additional light source module (101) emits at least one primary light, and a light combining portion (102) obtains the first path of light and an emergent light of the additional light source module (101) and combines the first path of light and the emergent light of the additional light source module (101) and outputs the combined light. The combined light source device uses an additional light source module (101) to emit a primary light, which is added and combined into a combined light of the three primary lights to increase the brightness of an output light. Compared with the existing method of increasing the brightness of light by exciting a luminescent material to generate a colored light, the combined light source device can increase the brightness of an output light more effectively. Therefore, the combined light source device can effectively increase the brightness of an output light, and can increase the brightness of a projection system when applied to the projection system.

Description

A light-combining light source device and projection system

technical field

The present invention relates to the technical field of optical systems, in particular to a light-combining light source device. The invention also relates to a projection system.

Background technique

The application of projectors is becoming more and more extensive and common, such as in conferences, teaching, entertainment, etc., and with it, users have higher and higher requirements for the performance indicators of projectors. Among them, the brightness is one of the important indicators of the projection system. At the current technical stage, the R&D personnel improve the brightness of the projection system by increasing the brightness of the light source of the projection system.

The traditional bulb light source is gradually eliminated due to its short lifespan and poor color effect, and then a light source that uses three primary colors to combine light has emerged. This light source has great advantages in color effect, lifespan, environmental protection, etc. There are LED and laser light sources. This light source needs to combine three primary colors of light, and the quality of the light combining scheme directly determines the light utilization efficiency of the light source.

In the prior art, the light combining scheme adopted is to set the red light source and the blue light source to generate red and blue light respectively, and add a blue light source. The light-emitting chip itself generates green light, and the phosphor on the light-emitting chip is excited by the blue light to emit green light, thereby obtaining more green. After that, the red, green and blue light is combined by the dichroic mirror, so as to achieve the purpose of improving the brightness. Although this light combining scheme excites the green phosphor to increase the green brightness by adding a channel of blue light, the improvement efficiency of this method is not high, and the improvement efficiency of green light in actual use is often below 50%.

SUMMARY OF THE INVENTION

The purpose of the present invention is to provide a light-combining light source device, which can effectively improve the brightness of output light, and can improve the brightness of the projection system when applied to a projection system. The present invention also provides a projection system.

To achieve the above object, the present invention provides the following technical solutions:

A light combining light source device, comprising a basic light source module, at least one additional light source module and a light combining part,

The basic light source module is used for emitting the first path light formed by combining the three primary color lights;

The additional light source module is used for emitting any primary color light of the three primary color lights, and the at least one additional light source module emits at least one primary color light;

The light combining part is used for acquiring the first path light and the outgoing light of the additional light source module, and combining the first path light and the outgoing light of the additional light source module to output.

Preferably, the light combining part is specifically configured to transmit the first path light, reflect the outgoing light of the additional light source module through total reflection, and reflect the first path light and the additional light source module. The outgoing light of the light source module is combined.

Preferably, the light combining part includes a first optical medium body and a second optical medium body, the first path light is transmitted through the first optical medium body incident on the optical interface between the two, and the additional light source The outgoing light of the module is incident on the optical interface between the two through the second optical medium body and is totally reflected.

Preferably, the light combining part includes an optical film, and the optical film transmits the first path light, reflects the emitted light of the additional light source module, and transmits the first path light and the additional light source. The emitted light of the modules is combined, and the wavelength range of the output light of the additional light source module has a deviation from the wavelength range of the same primary color light that is combined into the first path light.

Preferably, the at least one additional light source module includes a first additional light source module that emits light of a first primary color and a second additional light source module that emits light of a second primary color;

The light combining part includes a first area and a second area, and the outgoing light of the first additional light source module and the outgoing light of the second additional light source module are respectively incident on the first area and the second area of the light combining part. The second area, the first area of the light combining part transmits the first path light and reflects the outgoing light of the first additional light source module, and the second area of the light combining part The first path light transmits and reflects the outgoing light of the second additional light source module, and the first path light, the outgoing light of the first additional light source module and the second additional light source module The outgoing light of the group converges.

Preferably, the at least one additional light source module includes a first additional light source module that emits light of the first primary color and a second additional light source module that emits light of the second primary color;

The light combining part includes a first light combining part and a second light combining part, the first light combining part is used to transmit the first path light and reflect the outgoing light of the first additional light source module The second light combining part is used to combine the first path light emitted by the first light combining part The combined light with the emitted light of the first additional light source module is transmitted out, the emitted light of the second additional light source module is reflected, and the first path light, the first additional light source module The outgoing light and the outgoing light of the second additional light source module are combined.

Preferably, the basic light source module includes a first basic light source for generating light of three primary colors, a second basic light source and a third basic light source, and a first light source for combining the outgoing light generated by the basic light source to form the first path light filter device.

Preferably, the filter device is in the shape of "X", which divides the space into four areas, and the first primary color light, the second primary color light, and the third primary color light are incident from the first area, the second area, and the third area, respectively. To the filter device, the combined first light path is emitted from the fourth area.

Preferably, the filter device includes a first filter element, a second filter element and a third filter element, and the first filter element and the second filter element are respectively arranged on the third filter element. The two sides of the light element are arranged in an "X" shape;

The first filter element is used to transmit the first primary color light and the second primary color light and reflect the third primary color light, and the second filter element is used to transmit the second primary color light and the third primary color light. The primary color light is reflected, and the third filter element is used for reflecting the first primary color light and transmitting the second primary color light and the third primary color light.

Preferably, the filter device includes a first surface, a second surface, a third surface and a fourth surface facing in different directions, respectively, and the first primary color light, the second primary color light, and the third primary color light are transmitted from the first surface respectively. , the second surface, and the third surface enter the filter device, and the first path light formed by the confluence is emitted from the fourth surface.

Preferably, the filter device includes four triangular right-angle prisms, the right-angle surfaces of the four prisms are attached in sequence, and the inclined surfaces of the four prisms respectively form the first surface, the second surface, the third surface and the fourth surface.

Preferably, the basic light source module includes a first optical element and a second optical element, the first optical element is used to transmit the first primary color light and reflect the second primary color light, so as to transmit the first primary color light Combined with the second primary color light, the second optical element is used to reflect the combined light of the first primary color light and the second primary color light emitted by the first optical element and transmit the third primary color light to transmit the first primary color light and the second primary color light. A primary color light, a second primary color light and a third primary color light are combined and output.

A projection system includes the above-mentioned light combining light source device.

It can be known from the above technical solutions that a light combining light source device provided by the present invention includes a basic light source module, at least one additional light source module and a light combining part, and the basic light source module emits a first path formed by combining three primary colors of light. Light, the additional light source module is used to emit any primary color light of the three primary color lights, the at least one additional light source module can emit at least one primary color light, and the light combining part obtains the first path light and the additional light source module. The outgoing light is output by combining the first path light and the outgoing light of the additional light source module.

The light combining light source device of the present invention uses another light source module to emit primary color light to increase and combine into the combined light of the three primary color lights, so as to improve the brightness of the output light. Compared with the existing method of increasing light brightness by exciting luminescent substances to generate colored light, the output light brightness can be increased more effectively, so the light combining light source device can effectively improve the output light brightness, and the application in a projection system can improve the projection performance. The brightness of the system.

The projection system provided by the present invention can achieve the above beneficial effects.

Description of drawings

In order to explain the embodiments of the present invention or the technical solutions in the prior art more clearly, the following briefly introduces the accompanying drawings that need to be used in the description of the embodiments or the prior art. Obviously, the accompanying drawings in the following description are only These are some embodiments of the present invention. For those of ordinary skill in the art, other drawings can also be obtained according to these drawings without creative efforts.

1 is a schematic diagram of a light-combining light source device according to an embodiment of the present invention;

2 is a schematic diagram of a light-combining light source device according to another embodiment of the present invention;

3 is a schematic diagram of a light-combining light source device according to another embodiment of the present invention;

4 is a schematic diagram of a light-combining light source device according to another embodiment of the present invention;

5 is a schematic diagram of a light-combining light source device according to another embodiment of the present invention;

6 is a schematic diagram of a basic light source module according to an embodiment of the present invention;

7 is a schematic diagram of a basic light source module according to another embodiment of the present invention;

8 is a schematic diagram of a basic light source module according to another embodiment of the present invention;

FIG. 9 is a schematic diagram of a light source module according to an embodiment of the present invention.

detailed description

In order to make those skilled in the art better understand the technical solutions of the present invention, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described The embodiments are only some of the embodiments of the present invention, but not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

An embodiment of the present invention provides a light combining light source device, including a basic light source module, at least one additional light source module, and a light combining part, where the basic light source module is used to emit a first path of light formed by combining three primary color lights , the additional light source module is used to emit any primary color light of the three primary color lights, and the at least one additional light source module emits at least one primary color light;

The basic light source module combines the three primary colors of light, and outputs the first light path formed by combining the three primary color lights. The additional light source module emits a single primary color light, and the at least one additional light source module emits at least one primary color light. The three primary color lights refer to three color lights that can be mixed into any other color light.

The light combining light source device of this embodiment uses another light source module to emit primary color light to increase and combine into the combined light of the three primary color lights, so as to improve the brightness of the output light. Compared with the existing method of increasing light brightness by exciting luminescent substances to generate colored light, the output light brightness can be increased more effectively, so the light combining light source device can effectively improve the output light brightness, and the application in a projection system can improve the projection performance. The brightness of the system.

The light combining light source device of the present invention will be described in detail below with reference to the specific embodiments and the accompanying drawings. A light combining light source device provided by an embodiment of the present invention includes a basic light source module, at least one additional light source module, and a light combining part, wherein the basic light source module is used to emit a first path formed by combining three primary colors of light Light. The additional light source module is used to emit any one of the three primary color lights. When the light combining light source device includes multiple additional light source modules, the multiple additional light source modules can emit the same primary color light, or, A plurality of additional light source modules can emit light of two primary colors or can emit light of three primary colors.

The light combining part is used to transmit the first path light, reflect the outgoing light of the additional light source module through total reflection, and combine the first path light and the outgoing light of the additional light source module. Please refer to FIG. 1 , which is a schematic diagram of a light-combining light source device according to this embodiment, wherein the light-combining light source device includes an additional light source module as an example for description. It can be seen from FIG. 1 that the light combining light source device includes a basic light source module 100, an additional light source module 101 and a light combining part 102, wherein the basic light source module 100 emits a first path of light, and the first path of light is The light of the three primary colors is combined, and the additional light source module 101 emits one primary color light. The light of the first path is incident on the light combining part 102 and transmitted out, the light emitted from the additional light source module 101 is incident on the light combining part 102 for total reflection, and the light is reflected and combined with the transmitted first path of light. Convergence of two paths of light can be understood as at least a part of the two paths of light overlap and the two paths of light travel in the same direction. In FIG. 1 , in order to show the propagation paths of the first path light and the light emitted by the additional light source module 101, the arrows used to indicate the first path light and the output light of the additional light source module 101 in the emitted light of the light combining unit 102 do not overlap. , but in the actual optical path, the transmitted first path light and the reflected primary color light in the outgoing light of the light combining unit 102 at least partially overlap,

The light combining light source device of this embodiment uses the principle of total reflection to combine the primary color light emitted by the additional light source module and the first light path, so that the same optical element can transmit and reflect the same color light, and the total reflection can reflect the light. The energy loss is small, the light utilization rate of the light combining light source device can be improved, and the output light brightness can be effectively improved.

In addition, the light combining light source device of this embodiment uses the principle of total reflection to combine the primary color light emitted by the additional light source module with the first path light, wherein the wavelength range of the emitted light from the additional light source module is the same as that of the first path light. The wavelength range of the primary color light may have no deviation or deviation.

Optionally, please refer to FIG. 2 , which is a schematic diagram of a light combining light source device according to another embodiment. The light combining part 102 may include a first optical medium body 103 and a second optical medium body 104 . The light is incident on the optical interface between the two through the first optical medium body 103 and transmitted, and the light emitted from the additional light source module 101 is incident on the optical interface between the two through the second optical medium body 104 and is totally reflected, so that the first path The light is transmitted through the optical interface between the first optical medium body 103 and the second optical medium body 104 , and another channel of primary color light emitted by the additional light source module 101 is reflected through the optical interface of the two channels to realize the convergence of the two channels of light. Optionally, the first optical medium body 103 may be, but not limited to, a prism, and the second optical medium body 104 may be, but not limited to, a prism.

The total reflection of light requires light to enter a lower refractive index medium from a higher refractive index medium and the incident angle is greater than the critical angle. Therefore, in practical applications, the first optical medium body can be selected according to the wavelength range of the light emitted by each light source module. , the refractive index of the second optical medium and the corresponding arrangement of the optical path. In addition, it should be noted that the optical structure adopted by the light combining part shown in FIG. 2 is only a specific example, and other optical structures based on the same principle may be used in the light combining part in practical applications, which are also within the protection scope of the present invention.

Yet another embodiment of the present invention provides a light combining light source device including a basic light source module, at least one additional light source module, and a light combining part, wherein the basic light source module is used to emit a first path formed by combining three primary colors of light The additional light source module is used to emit any one of the three primary colors of light. The light combining part includes an optical film, the optical film transmits the first path light, reflects the outgoing light of the additional light source module, and combines the first path light and the outgoing light of the additional light source module, Wherein, the wavelength range of the light emitted by the additional light source module has a deviation from the wavelength range of the same primary color light that is combined into the first path light, that is, the wavelength range of the primary color light emitted by the additional light source module is different from the wavelength range of the primary color light that is combined into the first path light. The wavelength range of the same primary color light of the path light has deviations, so that the light combining part can reflect the primary color light emitted by the additional light source module in a corresponding manner, and transmit the same primary color light in the first path light.

Optionally, please refer to FIG. 3 , which is a schematic diagram of a light combining light source device provided in this embodiment, wherein the light combining light source device includes an additional light source module as an example for description. It can be seen from the figure that the light combining light source device includes a basic light source module 200, an additional light source module 201 and a light combining part 202, wherein the basic light source module 200 emits a first path of light, and the first path of light is three. The primary color light is combined, and the additional light source module 201 emits a primary color light. The first path of light incident on the optical film of the light combining part 202 is transmitted out, and the output light of the additional light source module 201 is incident on the optical film of the light combining part 202 and reflected out, and the transmitted light and the reflected light are combined.

Optionally, the light combining unit 202 can use a filter element. If the wavelength range of the light emitted by the additional light source module is exactly the same as the wavelength range of the same primary color light that is combined into the first light, the same filter element cannot realize the same wavelength band. The range light is both transmitted and reflected. Therefore, in this embodiment, the wavelength range of the output light of the additional light source module is set to deviate from the wavelength range of the same primary color light that is combined into the first light path, so that the two different wavelength ranges belong to the same primary color. , through the same filter element can transmit and reflect respectively.

Preferably, in this embodiment, the primary color light emitted by the light source module is narrow-band light, so as to ensure that the wavelength bands of the two different wavelength ranges belonging to the same primary color overlap less, so that it is convenient to realize the two different wavelength ranges through the same optical element. Can transmit and reflect respectively. Optionally, the light source module can use but is not limited to a laser light source, and the laser has the advantage of narrow band. Optionally, the filter element may be coated with an optical film to achieve light transmission and reflection characteristics.

The light combining light source device of this embodiment uses another light source module to emit primary color light to increase and combine into the combined light of the three primary colors to improve the brightness of the output light. The light in different wavelength bands is transmitted and reflected respectively to realize light combination, which can improve the light utilization efficiency of the light combination light source device and effectively improve the output light brightness.

The above mainly describes the light combining manners that can be adopted by the light combining light source device, and the embodiments of the light combining light source device are further described below with reference to the accompanying drawings. Yet another embodiment of the present invention provides a light combining light source device including a basic light source module, at least one additional light source module, and a light combining portion, wherein the at least one additional light source module includes a first additional light source module that emits light of a first primary color a group and a second additional light source module that emits light of the second primary color.

Please refer to FIG. 4 , which is a schematic diagram of a light-combining light source device provided in this embodiment, wherein the light-combining light source device includes a basic light source module 300 , a first additional light source module 301 , a second additional light source module 302 and Light combining unit 303 . The basic light source module 300 emits a first path of light, and the first path of light is a combined light of three primary color lights. The first additional light source module 301 emits light of the first primary color, and the second additional light source module 302 emits light of the second primary color.

The light combining part 303 includes a first area 304 and a second area 305 , the first path light emitted by the basic light source module 300 is incident on the first area 304 and the second area 305 is transmitted, and the first light source emitted by the first additional light source module 301 is emitted. A primary color light enters the first area 304 of the light combining part, and the first area 304 reflects the first primary color light; the second primary color light emitted by the second additional light source module 302 enters the second area 305 of the light combining part, and the second primary color light Region 305 reflects the second primary color light out. Therefore, light combining is realized by the first light path of the light combining part 303 , the light emitted by the first additional light source module 301 and the emitted light from the second additional light source module 302 . The arrows shown in the figure only represent the propagation paths of each light.

Optionally, the first area 304 or the second area 305 of the light combining part 303 may reflect the light emitted by the additional light source module through total reflection. During specific implementation, the optical structure of the light combining part and the refractive index of the optical medium used by the light combining part can be set according to the overall optical path layout of the optical system and the arrangement of each light source module.

Optionally, the first area 304 or the second area 305 of the light combining part 303 may not reflect the light emitted by the additional light source module through total reflection, but the wavelength range of the primary color light emitted by the additional light source module is combined into the first path. The wavelength range of the light of the same primary color has a deviation. Specifically, the wavelength range of the first primary color light emitted by the first additional light source module 301 has a deviation from the wavelength range of the same primary color light that is combined into the first path of light. The second additional light source module The wavelength range of the second primary color light emitted from the group 302 has a deviation from the wavelength range of the same primary color light that is combined into the first light path.

In practical applications, the other at least two primary color lights are added and combined into the three primary color combined light by the light combining method of this embodiment. Convergence of each light to achieve the effect of combining light.

Therefore, the light combining light source device of this embodiment can add at least two other primary color lights, and add and combine them into the combined light of the three primary color lights, so as to improve the brightness of the output light. Compared with the existing method of increasing light brightness by exciting luminescent substances to generate colored light, the output light brightness can be increased more effectively, so the light combining light source device can effectively improve the output light brightness, and the application in a projection system can improve the projection performance. The brightness of the system.

Yet another embodiment of the present invention provides a light combining light source device including a basic light source module, at least one additional light source module, and a light combining portion, wherein the at least one additional light source module includes a first additional light source module that emits light of a first primary color a group and a second additional light source module that emits light of the second primary color.

The light combining part includes a first light combining part and a second light combining part, and the first light combining part is used to transmit the first path light and reflect the outgoing light of the first additional light source module, The first path light and the outgoing light of the first additional light source module are combined, and the second light combining part is used to combine the first path light and all the light emitted by the first light combining part. The combined light of the emitted light of the first additional light source module is transmitted out, the emitted light of the second additional light source module is reflected, and the emitted light of the first path light and the first additional light source module is reflected. and the outgoing light of the second additional light source module is combined.

Please refer to FIG. 5 , which is a schematic diagram of a light-combining light source device according to this embodiment, and the arrows shown in the figure only represent the propagation paths of each light. The light combining light source device includes a basic light source module 400 , a first additional light source module 401 , a second additional light source module 402 , a first light combining part 403 and a second light combining part 404 . Wherein, the basic light source module 400 emits a first path of light, the first path of light is the combined light of three primary colors, the first additional light source module 401 emits the first primary color light, and the second additional light source module 402 emits the first path of light. Two primary colors.

The first light combining part 403 transmits the first path light and reflects the first primary color light emitted by the first additional light source module 401, so as to combine the first path light and the emitted light of the first additional light source module; The light combining unit 404 transmits the emitted light of the first light combining unit 403 , that is, the combined light of the first path light and the emitted light of the first additional light source module 401 , and reflects the second primary color light emitted by the second additional light source module 402 . to combine the first path light, the outgoing light of the first additional light source module 401 and the outgoing light of the second additional light source module 402 .

Optionally, the first light combining part 401 or the second light combining part 402 may reflect the light emitted by the additional light source module through total reflection. The optical structure of each light combining part and the refractive index of the optical medium used by the light combining part are correspondingly set in the overall optical path layout.

Optionally, the first light combining part 401 or the second light combining part 402 may not reflect the light emitted by the additional light source module through total reflection, but the wavelength range of the primary color light emitted by the additional light source module is combined into the first light path. The wavelength range of the light of the same primary color should have deviation. Specifically, the wavelength range of the first primary color light emitted by the first additional light source module 401 has a deviation from the wavelength range of the same primary color light that is combined into the first path light. The second additional light source module The wavelength range of the second primary color light emitted from the group 402 has a deviation from the wavelength range of the same primary color light that is combined into the first light path.

Further in the above embodiments, the basic light source module may include a first basic light source for generating three primary light sources, a second basic light source and a third basic light source, and a combination of the outgoing light generated by the basic light source. A filter device for forming the first light path. Optionally, the filter device can adopt the following structure, the filter device is in the shape of "X", and the space is divided into four areas, the first primary color light, the second primary color light, and the third primary color light are respectively The second region and the third region are incident on the filter device, and the combined first path light is emitted from the fourth region.

Exemplarily, please refer to FIG. 6, which is a schematic diagram of a basic light source module provided by an embodiment. It can be seen from the figure that the filter device includes a first filter element 500, a second filter element 501 and a The third filter element 502 , the first filter element 500 and the second filter element 501 are respectively disposed on both sides of the third filter element 503 and arranged in an "X" shape. The first primary color light enters the third filter element 502 and the first filter element 500 from the space between the third filter element 502 and the first filter element 500, that is, the first region, and the third primary color light enters the third filter element 502 and the first filter element 500. A space between the element 502 and the second filter element 501, that is, the third area, is incident on the second filter element 501 and the third filter element 502, and the second primary color light is transmitted from the third filter element 502 and the second filter element 502. Another space between the elements 501, that is, the second area, is incident on the third filter element 502 and the second filter element 501, and the first path light formed by the confluence passes from the space between the first filter element 500 and the third filter element 502. The other space in between, the fourth area, is emitted. The first filter element 500 is used to transmit the first primary color light and the second primary color light and reflect the third primary color light, and the second filter element 501 is used to transmit the second primary color light and the third primary color light. The primary color light is reflected, and the third filter element 502 is used for reflecting the first primary color light and transmitting the second primary color light and the third primary color light.

Preferably, in this embodiment, the first filter element 500 and the third filter element 502 can be perpendicular to each other, the second filter element 501 and the third filter element 502 can be perpendicular to each other, the first primary color light, the second primary color light The light and the third primary color light are respectively incident at an angle of 45 degrees.

Optionally, the filter device can also adopt the following structure, the filter device includes a first surface, a second surface, a third surface and a fourth surface facing in different directions, the first primary color light, the second primary color light, the first primary color light, the first primary color light The three primary color lights enter the filter device from the first surface, the second surface and the third surface respectively, and the first light path formed by the confluence is emitted from the fourth surface. Exemplarily, please refer to FIG. 7, which is a schematic diagram of a basic light source module provided by another embodiment. It can be seen from the figure that the filter device includes four triangular right angle prisms, which are prism 600, prism 601, For the prism 602 and the prism 603, the right-angle surfaces of the four prisms are attached in sequence, and the inclined surfaces of the four prisms form the first surface, the second surface, the third surface and the fourth surface respectively. Coating can be applied on the four right-angle surfaces respectively to realize the reflection and transmission characteristics of each primary color light. Preferably, the first primary color light, the second primary color light and the third primary color light have an incident angle of 45 degrees respectively.

Optionally, the basic light source module can also adopt the following structure, please refer to FIG. 8 , which is a schematic diagram of a basic light source module provided by another embodiment. It can be seen from the figure that the basic light source module includes a first light source module. An optical element 700 and a second optical element 701, the first optical element 700 is used to transmit the first primary color light and reflect the second primary color light to combine the first primary color light and the second primary color light, the The second optical element 701 is used to reflect the combined light of the first primary color light and the second primary color light emitted by the first optical element 700 and transmit the third primary color light to transmit the first primary color light and the second primary color light. The light and the third primary color light are combined and output. Optionally, the first optical element 700 or the second optical element 701 may use a filter element.

In the above embodiments, the light source module for emitting primary color light may include a light source and a light shaping part, the light source is used for emitting primary color light, and the light shaping part is used for shaping the outgoing light of the light source to meet application requirements. Please refer to FIG. 9 . FIG. 9 is a schematic diagram of a light source module provided in this embodiment. The light shaping part can use a plano-convex lens 801 or a convex lens 802 to collect the large-angle divergent light emitted by the light source 800 into small-angle light ( For example, it is close to parallel light), which is beneficial for the light to pass through the subsequent light combining part.

Correspondingly, an embodiment of the present invention further provides a projection system, including the above-mentioned light combining light source device.

In the projection system of this embodiment, the light-combining light source device adopted uses another light source module to emit primary color light to increase and merge into the combined light of the three primary color lights, so as to improve the brightness of the output light. Compared with the existing method of increasing the brightness by exciting the luminescent substance to generate colored light, the brightness of the output light can be increased more effectively, so the light-combining light source device adopted can effectively improve the brightness of the output light, so that the projection system can improve the projection system. brightness.

The light-combining light source device and the projection system provided by the present invention have been described in detail above. The principles and implementations of the present invention are described herein by using specific examples, and the descriptions of the above embodiments are only used to help understand the method and the core idea of the present invention. It should be pointed out that for those skilled in the art, without departing from the principle of the present invention, several improvements and modifications can also be made to the present invention, and these improvements and modifications also fall within the protection scope of the claims of the present invention.

Claims

A light combining light source device is characterized in that it comprises a basic light source module, at least one additional light source module and a light combining part,

The basic light source module is used for emitting the first path light formed by combining the three primary color lights;

The additional light source module is used for emitting any primary color light of the three primary color lights, and the at least one additional light source module emits at least one primary color light;

The light combining part is used for acquiring the first path light and the outgoing light of the additional light source module, and combining the first path light and the outgoing light of the additional light source module to output.
The light-combining light source device according to claim 1, wherein the light-combining part is specifically configured to transmit the first path light, and reflect the outgoing light of the additional light source module by total reflection. , and the first path light and the outgoing light of the additional light source module are combined.
The light combining light source device according to claim 2, wherein the light combining part comprises a first optical medium body and a second optical medium body, and the first path light is incident on the first optical medium body through the first optical medium body. The optical interface of the two is transmitted through, and the emitted light of the additional light source module is incident on the optical interface of the two through the second optical medium body and is totally reflected.
The light combining light source device according to claim 1, wherein the light combining part comprises an optical film, and the optical film transmits the first path light and reflects the outgoing light of the additional light source module, When the first path light and the output light of the additional light source module are combined, the wavelength range of the output light from the additional light source module has a deviation from the wavelength range of the same primary color light combined into the first path light.
The light combining light source device according to claim 1, wherein the at least one additional light source module comprises a first additional light source module that emits light of a first primary color and a second additional light source that emits light of a second primary color module;

The light combining part includes a first area and a second area, and the outgoing light of the first additional light source module and the outgoing light of the second additional light source module are respectively incident on the first area and the second area of the light combining part. The second area, the first area of the light combining part transmits the first path light and reflects the outgoing light of the first additional light source module, and the second area of the light combining part The first path light transmits and reflects the outgoing light of the second additional light source module, and the first path light, the outgoing light of the first additional light source module and the second additional light source module The outgoing light of the group converges.
The light combining light source device according to claim 1, wherein the at least one additional light source module comprises a first additional light source module that emits light of a first primary color and a second additional light source that emits light of a second primary color module;

The light combining part includes a first light combining part and a second light combining part, the first light combining part is used to transmit the first path light and reflect the outgoing light of the first additional light source module The second light combining part is used to combine the first light path emitted by the first light combining part The combined light with the emitted light of the first additional light source module is transmitted out, the emitted light of the second additional light source module is reflected, and the first path light, the first additional light source module The outgoing light and the outgoing light of the second additional light source module are combined.
The light combining light source device according to any one of claims 1-6, wherein the basic light source module comprises a first basic light source, a second basic light source and a third basic light source for generating three primary color lights, and a filter device for combining the outgoing light generated by the basic light source to form the first path light.
The light combining light source device according to claim 7, wherein the filter device is in the shape of "X", which divides the space into four regions, the first primary color light, the second primary color light, and the third primary color light are respectively The first area, the second area, and the third area are incident on the filter device, and the combined first path light is emitted from the fourth area.
The light combining light source device according to claim 8, wherein the filter device comprises a first filter element, a second filter element and a third filter element, the first filter element and the The second filter elements are respectively arranged on both sides of the third filter element, and are arranged in an "X" shape;

The first filter element is used to transmit the first primary color light and the second primary color light and reflect the third primary color light, and the second filter element is used to transmit the second primary color light and the third primary color light. The primary color light is reflected, and the third filter element is used for reflecting the first primary color light and transmitting the second primary color light and the third primary color light.
The light combining light source device according to claim 7, wherein the filter device comprises a first surface, a second surface, a third surface and a fourth surface facing different directions, the first primary color light, the third surface The second primary color light and the third primary color light enter the filter device from the first surface, the second surface and the third surface respectively, and the combined first path light is emitted from the fourth surface.
The light-combining light source device according to claim 10, wherein the filter device comprises four triangular right-angle prisms, the right-angle surfaces of the four prisms are attached in sequence, and the inclined surfaces of the four prisms respectively form the first surface, The second surface, the third surface and the fourth surface.
The light combining light source device according to any one of claims 1-6, wherein the basic light source module comprises a first optical element and a second optical element, and the first optical element is used to combine the first primary color transmitting and reflecting the second primary color light to combine the first primary color light and the second primary color light, the second optical element for combining the first primary color light and the second primary color light emitted by the first optical element The combined light of the light reflects and transmits the third primary color light, so as to combine the first primary color light, the second primary color light and the third primary color light to output.
A projection system, characterized by comprising the light combining light source device according to any one of claims 1-12.