Solid-state light source projector

Abstract

The invention provides a solid-state light source projector. The solid-state light source projector comprises a plurality of light sources, a first homogenizing device, a first lens module, a second homogenizing device, a light receiving module and a reflecting module, the plurality of light sources are used for generating a plurality of colors of light. The first homogenizing device is arranged on one side of the plurality of light sources and is used for dispersing the plurality of color lights to generate a plurality of scattered lights. The first lens module is used for mixing the plurality of scattered colored lights to generate a plurality of mixed colored lights. The second homogenizing device is used for homogenizing the mixed color light to generate a plurality of parallel light beams. The light receiving module is used for focusing the plurality of parallel light beams to generate a plurality of focused light beams. The reflection module is arranged on one side of the light receiving module and used for reflecting the multiple focused light beams so as to output uniform light, and the light receiving module can output the uniform light in parallel.

Description

Technical Field

[0001] The present invention relates to the field of projectors, and more particularly to a solid-state light source projector capable of improving color uniformity. Background Art

[0002] In recent years, solid-state light source projectors using laser projection light sources have gradually extended from the professional field to the general household field. Laser light sources can provide high brightness, and the light source life can reach about 20,000 hours, greatly reducing maintenance costs. Compared with traditional bulb projectors that need to wait for the heat dissipation time when turning on and off, laser projectors can achieve instant start-up, greatly improving work efficiency. There is no direction limit in installation, greatly improving the setting flexibility. However, due to technical and cost issues, laser light source models are generally priced high, and it is still difficult to replace traditional projection light sources in the short term.

[0003] Projectors are disassembled into a light source system, an illumination system, and an imaging system according to the architecture. Among them, the light source system provides multi-color light sources for the illumination system. Solid-state light source projectors using laser light sources often encounter the problem of uneven color in the light source system because the RGB laser light sources of the projector are emitted separately and it is difficult to mix them evenly.

[0004] Therefore, it is necessary to design a solid-state light source projector capable of improving color uniformity to overcome the above defects. Summary of the Invention

[0005] The purpose of the present invention is to provide a solid-state light source projector that can mix various color lights together to achieve the purpose of improving color uniformity.

[0006] To achieve the above object, the present invention provides a solid-state light source projector, including a plurality of light sources for generating a variety of color lights;

[0007] A first homogenizing device is disposed on one side of the plurality of light sources for dispersing the variety of color lights to generate a plurality of scattered light beams;

[0008] A first lens module is disposed on one side of the first homogenizing device for mixing the plurality of scattered light beams to generate a plurality of mixed color light beams;

[0009] A second homogenizing device is disposed on one side of the first lens module for homogenizing the plurality of mixed color light beams to generate a plurality of parallel light beams;

[0010] A light collecting module is disposed on one side of the second homogenizing device for focusing the plurality of parallel light beams to generate a plurality of focused light beams; and

[0011] A reflection module is disposed on one side of the light collecting module for reflecting the plurality of focused light beams to output uniform light;

[0012] Wherein the light collection module outputs the uniform light in parallel.

[0013] Preferably, the first homogenizing device and the second homogenizing device are light pipes, solid light pipes, single-sided lens arrays or double-sided lens arrays.

[0014] Preferably, the reflection module is a stationary, moving or rotating device; wherein, the reflection module includes a diffuser.

[0015] Preferably, the solid-state light source projector further includes:

[0016] A third homogenizing device, disposed on the other side of the light collection module, for homogenizing the uniform light transmitted by the light collection module to generate a white light beam;

[0017] A second lens module, disposed on one side of the third homogenizing device, for transmitting the white light beam;

[0018] A prism module, disposed on one side of the second lens module, for reflecting the white light beam;

[0019] A digital micromirror device, disposed on one side of the prism module, for modulating the white light beam to generate a modulated light beam; and

[0020] A lens, disposed on the other side of the prism module, for outputting the modulated light beam;

[0021] Wherein the modulated light beam penetrates the prism module and is output to the lens.

[0022] Preferably, the solid-state light source projector further includes:

[0023] A third homogenizing device, disposed on the other side of the light collection module, for homogenizing the uniform light to generate a white light beam;

[0024] A second lens module, disposed on one side of the third homogenizing device, for transmitting the white light beam;

[0025] A prism module, disposed on one side of the second lens module, for penetrating the white light beam;

[0026] A digital micromirror device, disposed on one side of the prism module, for modulating the white light beam to generate a modulated light beam; and

[0027] A lens, disposed on the other side of the prism module, for outputting the modulated light beam;

[0028] Wherein the prism module reflects the modulated light beam to reflect the modulated light beam to the lens.

[0029] Preferably, the solid-state light source projector further includes:

[0030] A transmissive panel module is disposed on the other side of the light collection module for modulating the uniform light to generate a modulated light beam; and

[0031] A lens is disposed on one side of the transmissive panel module for outputting the modulated light beam.

[0032] Preferably, a solid-state light source projector includes:

[0033] A plurality of light sources for generating multiple color lights;

[0034] A first homogenizing device is disposed on one side of the plurality of light sources for dispersing the multiple color lights to generate multiple scattered light beams;

[0035] A first lens module is disposed on one side of the first homogenizing device for mixing the scattered light beams to generate multiple first mixed color light beams;

[0036] A reflecting element is disposed on one side of the first lens module for reflecting the multiple first mixed color light beams;

[0037] A second lens module is disposed on one side of the reflecting element for mixing the multiple reflected first mixed color light beams to generate multiple second mixed color light beams;

[0038] A second homogenizing device is disposed on one side of the second lens module for homogenizing the multiple second mixed color light beams to generate multiple parallel light beams;

[0039] A light collection module is disposed on one side of the second homogenizing device for focusing the multiple parallel light beams to generate multiple focused light beams; and

[0040] A reflecting module is disposed on one side of the light collection module for reflecting the multiple focused light beams to output uniform light.

[0041] Preferably, the first homogenizing device and the second homogenizing device are a light pipe, a solid light pipe, a single-sided lens array or a double-sided lens array.

[0042] Preferably, the reflecting module is a stationary, moving or rotating device; wherein, the reflecting module includes a diffuser.

[0043] Preferably, the solid-state light source projector further includes:

[0044] A third homogenizing device is disposed on the other side of the light collection module for homogenizing the uniform light to generate a white light beam;

[0045] A third lens module is disposed on one side of the third homogenizing device for transmitting the white light beam;

[0046] A prism module, disposed on one side of the third lens module, for reflecting the white light beam;

[0047] A digital micromirror device, disposed on one side of the prism module, for modulating the white light beam to generate a modulated light beam; and

[0048] A lens, disposed on the other side of the prism module, for outputting the modulated light beam;

[0049] Wherein the modulated light beam passes through the prism module and is output to the lens.

[0050] Preferably, the solid-state light source projector further comprises:

[0051] A third homogenizing device, disposed on the other side of the light collecting module, for homogenizing the uniform light to generate a white light beam;

[0052] A third lens module, disposed on one side of the third homogenizing device, for transmitting the white light beam;

[0053] A prism module, disposed on one side of the third lens module, for passing through the white light beam;

[0054] A digital micromirror device, disposed on one side of the prism module, for modulating the white light beam to generate a modulated light beam; and

[0055] A lens, disposed on the other side of the prism module, for outputting the modulated light beam;

[0056] Wherein the prism module reflects the modulated light beam to reflect the modulated light beam to the lens.

[0057] Preferably, the solid-state light source projector further comprises:

[0058] A transmissive panel module, disposed on the other side of the light collecting module, for modulating the uniform light to generate a modulated light beam; and

[0059] A lens, disposed on one side of the transmissive panel module, for outputting the modulated light beam.

[0060] Preferably, the solid-state light source projector further comprises:

[0061] A concave mirror module, disposed on the other side of the light collecting module, for focusing the uniform light to generate a focused light beam;

[0062] A digital micromirror device, disposed on one side of the concave mirror module, for modulating the focused light beam to generate a modulated light beam; and

[0063] A lens, disposed on one side of the digital micromirror device, for outputting the modulated light beam.

[0064] Compared with the prior art, the solid-state light source projector provided by the present invention includes a plurality of light sources, a first homogenizing device, a first lens module, a second homogenizing device, a light collecting module, and a reflection module. The plurality of light sources generate multiple color lights. The first homogenizing device disperses the multiple color lights to generate multiple scattered light beams. The first lens module mixes the multiple scattered color light beams to generate multiple mixed color light beams. The second homogenizing device homogenizes the multiple mixed color light beams to generate multiple parallel light beams. The light collecting module focuses the multiple parallel light beams to generate multiple focused light beams. The reflection module is disposed on one side of the light collecting module for reflecting the multiple focused light beams to output uniform light, and the light collecting module outputs the uniform light in parallel; and the light collecting module cooperates with the reflection module to change the direction of the light, saving the internal space of the solid-state light source projector. Thus, the solid-state light source projector proposed by the present invention can mix various color lights together to achieve the purpose of improving color uniformity. Description of the Drawings

[0065] Figure 1 It is a schematic diagram of a solid-state light source projector in an embodiment.

[0066] Figure 2 It is a schematic diagram of a solid-state light source projector in another embodiment.

[0067] Figure 3 It is a schematic diagram of a solid-state light source projector in another embodiment.

[0068] Figure 4 It is a schematic diagram of a solid-state light source projector in another embodiment.

[0069] Figure 5 It is a schematic diagram of a solid-state light source projector in another embodiment. Detailed Description of the Embodiments

[0070] To further understand the purpose, structure, features, and functions of the present invention, the following is a detailed description in conjunction with the embodiments.

[0071] In the specification and claims, certain terms are used to refer to specific elements. Those of ordinary skill in the art should understand that manufacturers may use different terms to refer to the same element. The specification and claims do not use the difference in names as a way to distinguish elements, but use the difference in functions of elements as the criterion for distinction. The term "comprising" mentioned throughout the specification and claims is an open-ended term and should be interpreted as "including but not limited to".

[0072] Figure 1Schematic diagram of a solid-state light source projector 100 in an embodiment. The solid-state light source projector 100 includes a plurality of light sources 102, a first homogenizing device 104, a first lens module 106, a second homogenizing device 108, a light collecting module 110, and a reflection module 112. The plurality of light sources 102 are used to generate various color lights. The first homogenizing device 104 is disposed on one side of the plurality of light sources 102 and is used to disperse the various color lights to generate multiple scattered light beams. In one embodiment, the first homogenizing device 104 can be a lightpipe, a solid lightpipe (rod), a single-sided lens array, or a double-sided lens array. The first lens module 106 is disposed on one side of the first homogenizing device 104 and is used to mix the multiple scattered color light beams to generate multiple mixed color light beams. The second homogenizing device 108 is disposed on one side of the first lens module 106 and is used to homogenize the multiple mixed color light beams to generate multiple parallel light beams. The second homogenizing device 108 can be a lightpipe, a solid lightpipe (rod), a single-sided lens array, or a double-sided lens array. The light collecting module 110 is disposed on one side of the second homogenizing device 108 and is used to focus the multiple parallel light beams to generate multiple focused light beams. The reflection module 112 is disposed on one side of the light collecting module 110 and is used to reflect the multiple focused light beams to output uniform light, and the light collecting module 110 outputs the uniform light in parallel. In one embodiment, the reflection module 112 includes a diffuser. In another embodiment, the reflection module 112 is a stationary, moving, or rotating device. Through the first homogenizing device 104, the first lens module 106, and the second homogenizing device 108 as described above, the various color lights (such as RGB three-color lights) generated by the plurality of light sources 102 can be mixed evenly, and the light collecting module 110 cooperates with the reflection module 112 to change the direction of the light, so that the internal space of the solid-state light source projector 100 can be effectively utilized.

[0073] Figure 2Schematic diagram of a solid-state light source projector 200 in another embodiment. Compared with the solid-state light source projector 100, the solid-state light source projector 200 further includes a third homogenizing device 214, a second lens module 216, a prism module 218, a digital micromirror device 220, and a lens 222. The third homogenizing device 214 is disposed on the other side of the light collection module 110 for homogenizing the uniform light transmitted from the light collection module 110 to generate a white light beam. The third homogenizing device 214 can be a lightpipe, a solid rod, a single-sided lens array, or a double-sided lens array. The second lens module 216 is disposed on one side of the third homogenizing device 214 for transmitting the white light beam. The prism module 218 is disposed on one side of the second lens module 216 for reflecting the white light beam. The digital micromirror device (DMD) 220 is disposed on one side of the prism module 218 for modulating the white light beam to generate a modulated light beam and generate an image. The lens 222 is disposed on the other side of the prism module 218 for outputting the modulated light beam. The modulated light beam penetrates the prism module 218 and is output to the lens 222, enabling the lens 222 to project an image.

[0074] Figure 3 Schematic diagram of a solid-state light source projector 300 in another embodiment. Compared with the solid-state light source projector 100, the solid-state light source projector 300 further includes a third homogenizing device 314, a second lens module 316, a prism module 318, a digital micromirror device 320, and a lens 322. The third homogenizing device 314 is disposed on the other side of the light collection module 110 for homogenizing the uniform light transmitted from the light collection module 110 to generate a white light beam. The third homogenizing device 314 can be a lightpipe, a solid rod, a single-sided lens array, or a double-sided lens array. The second lens module 316 is disposed on one side of the third homogenizing device 314 for transmitting the white light beam. The prism module 318 is disposed on one side of the second lens module 316 for passing through the white light beam. The digital micromirror device (DMD) 320 is disposed on one side of the prism module 318 for modulating the white light beam to generate a modulated light beam and generate an image. The lens 322 is disposed on the other side of the prism module 318 for outputting the modulated light beam. The prism module 318 reflects the modulated light beam to reflect the modulated light beam to the lens 322.

[0075] Figure 4Schematic diagram of a solid-state light source projector 400 in another embodiment. Compared with the solid-state light source projector 100, the solid-state light source projector 400 further includes a transmissive panel module 414 and a lens 416. The transmissive panel module 414 is disposed on the other side of the light collection module 110 for modulating the uniform light transmitted by the light collection module 110 to generate a modulated light beam. The lens 416 is disposed on one side of the transmissive panel module 414 for outputting the modulated light beam. The function of the transmissive panel module 414 is similar to that of the above-mentioned digital micro-mirror device (DMD) 320, both of which are used to generate images.

[0076] Figure 5Schematic diagram of a solid-state light source projector 500 in another embodiment. The solid-state light source projector 500 includes a plurality of light sources 502, a first homogenizing device 504, a first lens module 506, a reflection element 508, a second lens module 510, a second homogenizing device 512, a light collection module 514, a reflection module 516, a concave mirror module 518, a digital micromirror device 520, and a lens 522. The plurality of light sources 502 are used to generate multi-color light. The first homogenizing device 504 is disposed on one side of the plurality of light sources 502 and is used to disperse the multi-color light to generate multiple scattered light beams. In one embodiment, the first homogenizing device 504 can be a lightpipe, a solid lightpipe, a single-sided lens array, or a double-sided lens array. The first lens module 506 is disposed on one side of the first homogenizing device 504 and is used to mix the multiple scattered light beams to generate multiple first mixed-color light beams. The reflection element 508 is disposed on one side of the first lens module 506 and is used to reflect the multiple first mixed-color light beams. The second lens module 510 is disposed on one side of the reflection element 508 and is used to mix the reflected first mixed-color light beams to generate multiple second mixed-color light beams. The second homogenizing device 512 is disposed on one side of the second lens module 510 and is used to homogenize the multiple second mixed-color light beams to generate multiple parallel light beams. The second homogenizing device 512 can be a lightpipe, a solid lightpipe, a single-sided lens array, or a double-sided lens array. The light collection module 514 is disposed on one side of the second homogenizing device 512 and is used to focus the multiple parallel light beams to generate multiple focused light beams. The reflection module 516 is disposed on one side of the light collection module 514 and is used to reflect the multiple focused light beams to output uniform light, and the light collection module 514 outputs the uniform light in parallel. The concave mirror module 518 is disposed on the other side of the light collection module 514 and is used to focus the uniform light transmitted from the light collection module 110 to generate a focused light beam. The digital micromirror device (Digital micro-mirror device; DMD) 520 is disposed on one side of the concave mirror module 518 and is used to modulate the focused light beam to generate a modulated light beam to generate an image. The lens 522 is disposed on one side of the digital micromirror device 520 and is used to output the modulated light beam. The solid-state light source projector 500 uses the reflection element 508 to enable the position of the lens 522 to face upward, making good use of the space of the solid-state light source projector 500. Using the concave mirror module 518 can reduce the number of components of the solid-state light source projector 500. In one embodiment, the concave mirror module 518, the digital micromirror device 520, and the lens 522 can be replaced with the architectures of the solid-state light source projectors 200, 300, and 400, and the purpose of improving color uniformity can also be achieved.

[0077] Through the embodiments demonstrated by the present invention, solid-state light source projectors 100, 200, 300, 400, 500 can mix various color lights together to achieve the purpose of improving color uniformity.

[0078] The present invention has been described by the above related embodiments. However, the above embodiments are only examples for implementing the present invention. It must be pointed out that the disclosed embodiments do not limit the scope of the present invention. On the contrary, modifications and refinements made without departing from the spirit and scope of the present invention fall within the scope of patent protection of the present invention.

Claims

1. A solid-state light source projector, characterized in that, Comprising: A plurality of light sources for generating lights of multiple colors; A first homogenizing device disposed on one side of the plurality of light sources for dispersing the lights of multiple colors to generate multiple scattered light beams; A first lens module disposed on one side of the first homogenizing device for mixing the multiple scattered light beams to generate multiple mixed-color light beams; A second homogenizing device disposed on one side of the first lens module for homogenizing the multiple mixed-color light beams to generate multiple parallel light beams; A light collecting module disposed on one side of the second homogenizing device for focusing the multiple parallel light beams to generate multiple focused light beams; And A reflection module disposed on one side of the light collecting module for reflecting the multiple focused light beams to output uniform light; Wherein the light collecting module outputs the uniform light in parallel.

2. The solid-state light source projector according to claim 1, wherein, The first homogenizing device and the second homogenizing device are optical tubes, solid optical tubes, single-sided lens arrays or double-sided lens arrays.

3. The solid-state light source projector according to claim 1, wherein The reflection module is a stationary, movable or rotatable device; wherein, the reflection module includes a diffuser.

4. The solid-state light source projector according to claim 1, wherein, Further comprising: A third homogenizing device disposed on the other side of the light collecting module for homogenizing the uniform light transmitted from the light collecting module to generate a white light beam; A second lens module disposed on one side of the third homogenizing device for transmitting the white light beam; A prism module disposed on one side of the second lens module for reflecting the white light beam; A digital micromirror device disposed on one side of the prism module for modulating the white light beam to generate a modulated light beam; and A lens disposed on the other side of the prism module for outputting the modulated light beam; Wherein the modulated light beam passes through the prism module and is output to the lens.

5. The solid-state light source projector according to claim 1, wherein, Further comprising: A third homogenizing device disposed on the other side of the light collecting module for homogenizing the uniform light to generate a white light beam; A second lens module disposed on one side of the third homogenizing device for transmitting the white light beam; A prism module disposed on one side of the second lens module for passing through the white light beam; A digital micromirror device disposed on one side of the prism module for modulating the white light beam to generate a modulated light beam; and A lens disposed on the other side of the prism module for outputting the modulated light beam; Wherein the prism module reflects the modulated light beam to reflect the modulated light beam to the lens.

6. The solid-state light source projector according to claim 1, wherein Further comprising: A transmissive panel module disposed on the other side of the light collecting module for modulating the uniform light to generate a modulated light beam; and A lens disposed on one side of the transmissive panel module for outputting the modulated light beam.

7. A solid-state light source projector, characterized in that, Comprising: A plurality of light sources for generating lights of multiple colors; A first homogenizing device disposed on one side of the plurality of light sources for dispersing the lights of multiple colors to generate multiple scattered light beams; A first lens module disposed on one side of the first homogenizing device for mixing the scattered light beams to generate multiple first mixed-color light beams; A reflection element disposed on one side of the first lens module for reflecting the multiple first mixed-color light beams; A second lens module disposed on one side of the reflection element for mixing the multiple reflected first mixed-color light beams to generate multiple second mixed-color light beams; A second homogenizing device disposed on one side of the second lens module for homogenizing the multiple second mixed-color light beams to generate multiple parallel light beams; A light collection module is disposed on one side of the second homogenizing device for focusing the multiple parallel light beams to generate multiple focused light beams; and a reflection module is disposed on one side of the light collection module for reflecting the multiple focused light beams to output uniform light.

8. The solid-state light source projector according to claim 7, wherein The first homogenizing device and the second homogenizing device are a light pipe, a solid light pipe, a single-sided lens array or a double-sided lens array.

9. The solid-state light source projector according to claim 7, wherein The reflection module is a stationary, moving or rotating device; wherein, the reflection module includes a diffuser.

10. The solid-state light source projector according to claim 7, characterized in that, It further includes: A third homogenizing device is disposed on the other side of the light collection module for homogenizing the uniform light to generate a white light beam; A third lens module is disposed on one side of the third homogenizing device for transmitting the white light beam; A prism module is disposed on one side of the third lens module for reflecting the white light beam; A digital micromirror device is disposed on one side of the prism module for modulating the white light beam to generate a modulated light beam; and A lens is disposed on the other side of the prism module for outputting the modulated light beam; wherein the modulated light beam passes through the prism module and is output to the lens.

11. The solid-state light source projector according to claim 7, wherein, It further includes: A third homogenizing device is disposed on the other side of the light collection module for homogenizing the uniform light to generate a white light beam; A third lens module is disposed on one side of the third homogenizing device for transmitting the white light beam; A prism module is disposed on one side of the third lens module for passing through the white light beam; A digital micromirror device is disposed on one side of the prism module for modulating the white light beam to generate a modulated light beam; and A lens is disposed on the other side of the prism module for outputting the modulated light beam; wherein the prism module reflects the modulated light beam to reflect the modulated light beam to the lens.

12. The solid-state light source projector according to claim 7, wherein It further includes: A transmissive panel module is disposed on the other side of the light collection module for modulating the uniform light to generate a modulated light beam; and A lens is disposed on one side of the transmissive panel module for outputting the modulated light beam.

13. The solid-state light source projector according to claim 7, wherein It further includes: A concave mirror module is disposed on the other side of the light collection module for focusing the uniform light to generate a focused light beam; A digital micromirror device is disposed on one side of the concave mirror module for modulating the focused light beam to generate a modulated light beam; and A lens is disposed on one side of the digital micromirror device for outputting the modulated light beam.

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