CN214122667U - Five-channel LED light source structure of projector - Google Patents
Five-channel LED light source structure of projector Download PDFInfo
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- CN214122667U CN214122667U CN202023003893.5U CN202023003893U CN214122667U CN 214122667 U CN214122667 U CN 214122667U CN 202023003893 U CN202023003893 U CN 202023003893U CN 214122667 U CN214122667 U CN 214122667U
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Abstract
The utility model discloses a five-channel LED light source structure of projecting apparatus, including first passageway LED light source, second passageway LED light source, third passageway LED light source, fourth passageway LED light source, fifth passageway LED light source, first to five plastic lens group are used for carrying out approximate parallel light to the emergent light of first to five passageway LED light sources and assemble. The first relay lens is used for performing approximate parallel light shaping on emergent light of the first channel LED light source and emergent light of the third channel LED light source; the first dichroic mirror is used for combining the approximately parallel lights emitted by the first channel LED light source, the second channel LED light source and the third channel LED light source; the second dichroic mirror is used for combining the approximately parallel light emitted by the fourth channel LED light source with the first dichroic mirror; the third dichroic mirror is used for combining the approximately parallel light emitted by the fifth channel LED light source with the first dichroic mirror; the brightness and the color of the system can be greatly improved.
Description
Technical Field
The utility model relates to a projection equipment technical field, concretely relates to five-channel LED light source structure for projecting apparatus.
Background
The LED light source projector usually adopts an RGB light combination method, and the overall brightness of the picture is insufficient due to different lighting effects of LEDs of different colors in the system, and the color expression of the picture is affected.
At present, a mainstream four-channel LED light source projector mainly comprises a red light source, a green light source, a blue light source and a pumping blue light source, wherein an emergent light beam of the pumping blue light source is projected to a fluorescent light emitting surface of a green LED through a shaping light path, additional energy is provided to excite more green light rays, and the brightness output is improved. The light path of the four-channel light source generates light of three primary colors of red, green and blue, RGB light is combined through the dichroic color separation lens and enters the light uniformizing device, then the light passes through the light path of the rear relay end, the display device and the lens and is matched with electronic time sequence control, and finally a color picture is projected onto the screen.
At present, the four-channel structure only excites more green light due to pumping blue light, the brightness of red light and blue light is still restricted by the system light effect, and the brightness still needs to be sacrificed to achieve a better color state during color adjustment.
SUMMERY OF THE UTILITY MODEL
In order to solve the technical problem, the utility model aims at providing a five-channel LED light source structure for projecting apparatus makes the luminance of projector no longer receive the restriction of red, blue monochromatic luminance, also need not sacrifice luminance during white balance adjustment and just can reach better color state.
In order to achieve the above purpose, the utility model adopts the technical scheme that: a five-channel LED light source structure of a projector comprises a first channel LED light source, a second channel LED light source, a third channel LED light source, a fourth channel LED light source and a fifth channel LED light source;
the first shaping lens group is used for carrying out approximately parallel light convergence on emergent light of the first channel LED light source;
the second shaping lens group is used for carrying out approximately parallel light convergence on emergent light of the second channel LED light source;
the third shaping lens group is used for carrying out approximately parallel light convergence on emergent light of the third channel LED light source;
the fourth shaping lens group is used for carrying out approximately parallel light convergence on emergent light of the fourth channel LED light source;
the fifth shaping lens group is used for carrying out approximately parallel light convergence on emergent light of the fifth channel LED light source;
the first relay lens is used for performing approximate parallel light shaping on emergent light of the first channel LED light source and emergent light of the third channel LED light source;
the first dichroic mirror is used for combining the approximately parallel lights emitted by the first channel LED light source, the second channel LED light source and the third channel LED light source;
the second dichroic mirror is used for combining the approximately parallel light emitted by the fourth channel LED light source with the first dichroic mirror;
the third dichroic mirror is used for combining the approximately parallel light emitted by the fifth channel LED light source with the first dichroic mirror;
the light homogenizing device is a fly eye lens which is used for receiving the light combination of the second dichroic mirror and the third dichroic mirror and emitting uniform light strong rays;
the second relay lens is used for shaping the light emitted by the fly-eye lens and transmitting the light to the rear-end optical path system;
the reflector is used for reflecting emergent light of the second relay lens to the rear end optical path system;
the TIR total reflection prism is used for totally reflecting the light rays emitted by the reflector, transmitting the light rays to the display device and finally emitting the light rays through the projection lens to form an amplified image;
the first dichroic mirror is located intermediate the first shaping lens group and the first relay lens.
Furthermore, the second channel LED light source, the second shaping lens group, the third channel LED light source and the third shaping lens group are respectively positioned at two sides of the first dichroic mirror.
The first dichroic mirror 12 forms an included angle of 45 degrees with the optical axis of the first channel LED light source 1, the optical axis of the second channel LED light source, and the optical axis of the third channel LED light source, respectively.
The second dichroic mirror and the third dichroic mirror are positioned between the first relay lens and the fly-eye lens of the light homogenizing device, and the second dichroic mirror and the third dichroic mirror are intersected at one side close to the fly-eye lens and form an included angle of 90 degrees.
The second dichroic mirror, the third dichroic mirror and the optical axis of the fly-eye lens form 45-degree included angles.
The fourth channel LED light source and the fourth shaping lens group 7 are positioned on one side of the second dichroic mirror, the optical axis of the fourth channel LED light source and the fourth shaping lens group is reflected by the second dichroic mirror in 90 degrees, and the fourth channel LED light source and the fourth shaping lens group intersect with the incidence surface of the fly eye lens at the right side 1/4 of the optical axis of the fly eye lens.
The light rays which are emitted by the LED light source of the fourth channel and are approximately parallel are reflected by the second dichroic mirror and enter the right half part of the fly-eye lens.
And the fifth channel LED light source and the fifth shaping lens group are positioned on one side of the third dichroic mirror, the optical axis of the fifth channel LED light source and the fifth shaping lens group is reflected by the third dichroic mirror in 90 degrees, and the fifth channel LED light source and the fifth shaping lens group intersect with the incidence surface of the fly-eye lens at the left side 1/4 of the optical axis of the fly-eye lens.
And the approximately parallel light rays emitted by the fifth channel LED light source are reflected by the third dichroic mirror and enter the left half part of the fly-eye lens.
The beneficial effects of the utility model reside in that: the utility model discloses on the basis of present RGB BP four-channel LED light path, to the red light beam that efficiency is lower in the system and have great influence to the color saturation of projector, the passageway by red light beam all the way changes into two way red light source array structures, the red light beam array abandons the wide-angle marginal ray of LED light source outgoing, parallel light is similar to the central low-angle of make full use of, through two dichroic mirror reflection in fly-eye lens department, red light beam's efficiency in the system has been promoted, luminance and the color to the system all can be great promotion.
The utility model discloses do through light source channel structure adjustment, two dichroic mirror characteristic adjustment, be applied to the efficiency promotion to blue light beam in the system.
Drawings
The structure and features of the present invention will be further described with reference to the accompanying drawings and examples.
Fig. 1 is a schematic structural diagram of the present invention.
Fig. 2 is a schematic diagram of the optical path of fig. 1.
Detailed Description
Referring to fig. 1 and 2, the present invention discloses an embodiment of the present invention, which discloses a five-channel LED light source structure for a projector, and a five-channel LED light source structure for a projector, comprising a first channel LED light source 1, a second channel LED light source 2, a third channel LED light source 3, a fourth channel LED light source 4, and a fifth channel LED light source 5;
the first shaping lens group 6 is used for carrying out approximately parallel light convergence on emergent light of the first channel LED light source 1;
the second shaping lens group 7 is used for carrying out approximately parallel light convergence on emergent light of the second channel LED light source 2;
the third shaping lens group 8 is used for carrying out approximately parallel light convergence on emergent light of the third channel LED light source 3;
the fourth shaping lens group 9 is used for carrying out approximately parallel light convergence on emergent light of the fourth channel LED light source 4;
a fifth shaping lens group 10, configured to perform approximately parallel light convergence on the emergent light of the fifth channel LED light source 5;
the first relay lens 11 is used for performing approximate parallel light shaping on emergent light of the first channel LED light source 1 and the third channel LED light source 3;
the first dichroic mirror 12 is used for combining the approximately parallel lights emitted by the first channel LED light source 1, the second channel LED light source 2 and the third channel LED light source 3;
a second dichroic mirror 13 for combining the approximately parallel light emitted from the fourth channel LED light source 4 with the first dichroic mirror 12;
a third dichroic mirror 14 for combining the approximately parallel light emitted from the fifth channel LED light source 5 with the first dichroic mirror 12;
the light uniformizing device 15 is a fly-eye lens for receiving the combined light of the second dichroic mirror 13 and the third dichroic mirror 14 and emitting uniform strong light;
the second relay lens 16 is used for shaping the light emitted by the fly-eye lens and transmitting the light to the rear-end optical path system;
a reflecting mirror 17 for reflecting the exit light of the second relay lens 16 to the rear end optical path system;
the TIR total reflection prism 18 is used for totally reflecting the light emitted by the reflector 17, transmitting the light to the display device 19 and finally emitting the light through the projection lens 20 to form an amplified image;
the first dichroic mirror 12 is located intermediate the first shaping lens group 6 and the first relay lens 11.
Further, the second channel LED light source 2, the second shaping lens group 7, the third channel LED light source 3, and the third shaping lens group 8 are respectively located at two sides of the first dichroic mirror 12.
The first dichroic mirror 12 forms an included angle of 45 degrees with the optical axis of the first channel LED light source 1, the optical axis of the second channel LED light source 3, and the optical axis of the third channel LED light source 3.
The second dichroic mirror 13 and the third dichroic mirror 14 are located between the first relay lens 11 and the dodging device fly-eye lens 15, and the second dichroic mirror 13 and the third dichroic mirror 14 intersect at a side close to the fly-eye lens 15 and form an included angle of 90 °.
The optical axes of the second dichroic mirror 13, the third dichroic mirror 14 and the fly-eye lens 15 are at an angle of 45 °.
The fourth channel LED light source 4 and the fourth shaping lens group 7 are located on the side of the second dichroic mirror 13, and the optical axis thereof is reflected by the second dichroic mirror 13 at 90 ° and intersects with the incident surface of the fly-eye lens 15 at the right side 1/4 of the optical axis of the fly-eye lens.
The approximately parallel light emitted from the fourth-channel LED light source 4 is reflected by the second dichroic mirror 13 and enters the right half of the fly-eye lens 15.
The fifth channel LED light source 5 and the fifth shaping lens group 8 are located on the side of the third dichroic mirror 14, and the optical axis thereof is reflected by the third dichroic mirror 14 at 90 ° to intersect the incident surface of the fly-eye lens 15 at the left side 1/4 of the optical axis of the fly-eye lens.
The approximately parallel light emitted from the fifth channel LED light source 5 is reflected by the third dichroic mirror 14 and enters the left half of the fly-eye lens 15.
By the light source structure, the brightness of the projector is not limited by the brightness of the red and blue single colors any more, and a better color state can be achieved without sacrificing the brightness during white balance adjustment.
The explanation of the above embodiment explains and explains just in order to help understanding the utility model discloses a realization method and core thought thereof, simultaneously, to the utility model discloses general technical personnel in relevant field, the foundation the utility model discloses an idea all can have the change part on concrete implementation and range of application. In summary, the content of the present specification should not be construed as limiting the present invention, and all modifications without inventive step that are made according to the present invention should be within the scope of the present invention.
Claims (9)
1. The utility model provides a five-channel LED light source structure of projecting apparatus which characterized in that: the LED light source comprises a first channel LED light source, a second channel LED light source, a third channel LED light source, a fourth channel LED light source and a fifth channel LED light source;
the first shaping lens group is used for carrying out approximately parallel light convergence on emergent light of the first channel LED light source;
the second shaping lens group is used for carrying out approximately parallel light convergence on emergent light of the second channel LED light source;
the third shaping lens group is used for carrying out approximately parallel light convergence on emergent light of the third channel LED light source;
the fourth shaping lens group is used for carrying out approximately parallel light convergence on emergent light of the fourth channel LED light source;
the fifth shaping lens group is used for carrying out approximately parallel light convergence on emergent light of the fifth channel LED light source;
the first relay lens is used for performing approximate parallel light shaping on emergent light of the first channel LED light source and emergent light of the third channel LED light source;
the first dichroic mirror is used for combining the approximately parallel lights emitted by the first channel LED light source, the second channel LED light source and the third channel LED light source;
the second dichroic mirror is used for combining the approximately parallel light emitted by the fourth channel LED light source with the first dichroic mirror;
the third dichroic mirror is used for combining the approximately parallel light emitted by the fifth channel LED light source with the first dichroic mirror;
the light homogenizing device is a fly eye lens which is used for receiving the light combination of the second dichroic mirror and the third dichroic mirror and emitting uniform light strong rays;
the second relay lens is used for shaping the light emitted by the fly-eye lens and transmitting the light to the rear-end optical path system;
the reflector is used for reflecting emergent light of the second relay lens to the rear end optical path system;
the TIR total reflection prism is used for totally reflecting the light rays emitted by the reflector, transmitting the light rays to the display device and finally emitting the light rays through the projection lens to form an amplified image;
the first dichroic mirror is located intermediate the first shaping lens group and the first relay lens.
2. The five-channel LED light source structure of a projector according to claim 1, characterized in that: the second channel LED light source, the second shaping lens group, the third channel LED light source and the third shaping lens group are respectively positioned at two sides of the first dichroic mirror.
3. The five-channel LED light source structure of a projector according to claim 1, characterized in that: the first dichroic mirror forms 45-degree included angles with the first channel LED light source optical axis, the second channel LED light source optical axis and the third channel LED light source optical axis respectively.
4. The five-channel LED light source structure of a projector according to claim 1, characterized in that: the second dichroic mirror and the third dichroic mirror are positioned between the first relay lens and the fly-eye lens, and the second dichroic mirror and the third dichroic mirror are intersected at one side close to the fly-eye lens and form an included angle of 90 degrees.
5. The five-channel LED light source structure of a projector according to claim 1, characterized in that: the second dichroic mirror, the third dichroic mirror and the optical axis of the fly-eye lens form 45-degree included angles.
6. The five-channel LED light source structure of a projector according to claim 1, characterized in that: the fourth channel LED light source and the fourth shaping lens group are positioned on one side of the second dichroic mirror, the optical axis of the fourth channel LED light source and the fourth shaping lens group is reflected by the second dichroic mirror in 90 degrees, and the fourth channel LED light source and the fourth shaping lens group intersect with the incidence surface of the fly-eye lens at the right side 1/4 of the optical axis of the fly-eye lens.
7. The five-channel LED light source structure of a projector according to claim 1, characterized in that: the light rays which are emitted by the LED light source of the fourth channel and are approximately parallel are reflected by the second dichroic mirror and enter the right half part of the fly-eye lens.
8. The five-channel LED light source structure of a projector according to claim 1, characterized in that: and the fifth channel LED light source and the fifth shaping lens group are positioned on one side of the third dichroic mirror, the optical axis of the fifth channel LED light source and the fifth shaping lens group is reflected by the third dichroic mirror in 90 degrees, and the fifth channel LED light source and the fifth shaping lens group intersect with the incidence surface of the fly-eye lens at the left side 1/4 of the optical axis of the fly-eye lens.
9. The five-channel LED light source structure of a projector according to claim 1, characterized in that: and the approximately parallel light rays emitted by the fifth channel LED light source are reflected by the third dichroic mirror and enter the left half part of the fly-eye lens.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202023003893.5U CN214122667U (en) | 2020-12-15 | 2020-12-15 | Five-channel LED light source structure of projector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202023003893.5U CN214122667U (en) | 2020-12-15 | 2020-12-15 | Five-channel LED light source structure of projector |
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| Publication Number | Publication Date |
|---|---|
| CN214122667U true CN214122667U (en) | 2021-09-03 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202023003893.5U Active CN214122667U (en) | 2020-12-15 | 2020-12-15 | Five-channel LED light source structure of projector |
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| CN (1) | CN214122667U (en) |
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- 2020-12-15 CN CN202023003893.5U patent/CN214122667U/en active Active
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