CN216351746U - LCD micro projector - Google Patents
LCD micro projector Download PDFInfo
- Publication number
- CN216351746U CN216351746U CN202122325997.6U CN202122325997U CN216351746U CN 216351746 U CN216351746 U CN 216351746U CN 202122325997 U CN202122325997 U CN 202122325997U CN 216351746 U CN216351746 U CN 216351746U
- Authority
- CN
- China
- Prior art keywords
- assembly
- light source
- lens
- projector
- lcd
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 230000017525 heat dissipation Effects 0.000 claims description 9
- 239000011521 glass Substances 0.000 claims description 8
- 230000003287 optical effect Effects 0.000 claims description 6
- 238000009413 insulation Methods 0.000 claims description 4
- 238000013461 design Methods 0.000 abstract description 6
- 238000000034 method Methods 0.000 description 7
- 239000004973 liquid crystal related substance Substances 0.000 description 4
- 230000009471 action Effects 0.000 description 3
- 238000001816 cooling Methods 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000004075 alteration Effects 0.000 description 1
- 239000003086 colorant Substances 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000009977 dual effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000001746 injection moulding Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 229920000098 polyolefin Polymers 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 230000035945 sensitivity Effects 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
Images
Abstract
In embodiments of the present application, an LCD pico projector is provided, comprising a projector body, a light source assembly, a fresnel lens assembly, a reflective lens, and a lens assembly; the light source assembly, the Fresnel lens assembly, the reflecting lens and the lens assembly are arranged in the projector main body; the Fresnel lens assembly which converges light emitted by the light source assembly into parallel light is arranged on one side of the light source assembly, the reflecting lens is arranged on one side of the Fresnel lens assembly, which is far away from the light source assembly, and the lens assembly is arranged at the position corresponding to the reflecting lens; the included angle between the central axis of the lens component and the parallel light is larger than 90 degrees and smaller than 180 degrees. The design idea that the included angle formed by the incident light and the projection lens formed by the light source assembly is greater than 90 degrees is adopted through the projector light path, so that the shading phenomenon caused by short focus of the lens is effectively improved, the picture brightness of the projector is higher, and the experience feeling is better.
Description
Technical Field
The utility model relates to the field of live video, in particular to an LCD micro projector.
Background
The LCD (Liquid Crystal Display) structure is that Liquid Crystal is placed in two parallel glasses, and there are many vertical and horizontal tiny wires between the two glasses, and the direction of rod-like Crystal molecule is controlled by the power-on or not, and the light is refracted out to produce picture. LCD liquid crystal projectors use the electro-optic effect of liquid crystals, and the brightness, color, contrast, etc. of light passing through the LCD can be controlled by a circuit. The LCD projector can restore the colors of the projected pictures to be real, and has high color saturation; in the past decades of LCD projector processing technology development, LCD projector manufacturers have used many different ways to increase brightness and reduce noise, such as single fan cooling and dual fan cooling.
The traditional LCD projector light path design adopts the design idea that the included angle formed by incident light provided by a light source component and a projection lens is 90 degrees.
However, the short focus of the lens easily causes a shading phenomenon, so that the brightness of the image of the projector is low, and the experience feeling is poor.
SUMMERY OF THE UTILITY MODEL
In view of the above, embodiments of the present invention are proposed to provide an LCD pico projector that overcomes or at least partially solves the above problems.
The embodiment of the utility model discloses an LCD micro projector, which comprises a projector main body, a light source component, a Fresnel lens component, a reflecting lens and a lens component, wherein the Fresnel lens component is arranged on the projector main body;
the light source assembly, the Fresnel lens assembly, the reflecting lens and the lens assembly are arranged in the projector main body; the Fresnel lens assembly which converges light emitted by the light source assembly into parallel light is arranged on one side of the light source assembly, the reflecting lens is arranged on one side of the Fresnel lens assembly, which is far away from the light source assembly, and the lens assembly is arranged at the position corresponding to the reflecting lens;
the included angle between the central axis of the lens component and the parallel light is larger than 90 degrees and smaller than 180 degrees. Preferably, the projector main body comprises a shell, a fan assembly, a power supply, a sound cavity and a main control circuit board;
the main control circuit board is respectively and electrically connected with the power supply, the light source assembly and the fan assembly; the power supply is electrically connected with the light source assembly and the fan assembly respectively;
the fan assembly, the power supply, the sound cavity and the main control circuit board are arranged in the shell; the power supply is arranged on the backlight surface of the reflector plate, and the sound cavity is arranged at the bottom of the main control circuit board.
Preferably, the fan assembly comprises a fan and a blower for dissipating heat from the light source assembly;
and an air inlet of the air blower is communicated with the light source assembly, and an air outlet of the fan is communicated with the Fresnel lens assembly.
Preferably, the housing is provided with heat dissipation holes;
the positions of the heat dissipation holes correspond to the air outlet of the air blower.
Preferably, the light source assembly comprises a heat sink and an LED light source;
the LED light source is connected with a main control circuit board used for changing the light irradiation direction, and the radiator is arranged on one side, close to the air blower, of the LED light source.
Preferably, a light hopper for collecting light is arranged on one side of the main control circuit board, which is close to the fresnel lens assembly.
Preferably, the fresnel lens assembly comprises a first fresnel lens, heat insulation glass, an LCD display screen assembly and a second fresnel lens which are arranged in sequence;
the first Fresnel lens is close to one side of the light source assembly, and the second Fresnel lens is far away from one side of the light source assembly.
Preferably, the LCD display screen assembly includes a display screen and a fitting for securing the display screen;
the assembly is disposed about the display screen.
Preferably, the lens assembly includes a lens body and an optical lens;
the optical lens is arranged on one side of the lens main body entering the light source component.
The present application specifically includes the following advantages:
in the embodiments of the present application, the projection apparatus includes a projector main body, a light source assembly, a fresnel lens assembly, a reflective lens, and a lens assembly; the light source assembly, the Fresnel lens assembly, the reflecting lens and the lens assembly are arranged in the projector main body; the Fresnel lens assembly which converges light emitted by the light source assembly into parallel light is arranged on one side of the light source assembly, the reflecting lens is arranged on one side of the Fresnel lens assembly, which is far away from the light source assembly, and the lens assembly is arranged at the position corresponding to the reflecting lens; the included angle between the central axis of the lens component and the parallel light is larger than 90 degrees and smaller than 180 degrees. The included angle that incident light and the projecting lens subassembly that adopt the light source subassembly to provide through the projecting apparatus light path are for being greater than 90 degrees's design, have effectively improved the shading phenomenon that the camera lens short burnt caused for the picture luminance of projecting apparatus is higher, and experience feels better.
Drawings
In order to more clearly illustrate the technical solutions of the present application, the drawings needed to be used in the description of the present application will be briefly introduced below, and it is apparent that the drawings in the following description are only some embodiments of the present application, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without inventive labor.
FIG. 1 is a schematic view of an LCD micro-projector according to the present invention;
FIG. 2 is a schematic view of a partial structure of an LCD micro-projector according to the present invention;
1. a main control circuit board; 2. a sound cavity; 3. a first Fresnel lens; 4. heat insulating glass; 5. an LCD display screen assembly; 6. a second Fresnel lens; 7. a fan; 8. a power panel; 9. a mirror plate; 10. a lens assembly; 11. a blower; 12. a light hopper; 13. a light source assembly; 14. a housing.
Detailed Description
In order to make the aforementioned objects, features and advantages of the present application more comprehensible, the present application is described in further detail with reference to the accompanying drawings and the detailed description. It is to be understood that the embodiments described are only a few embodiments of the present application and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
Referring to fig. 1, a schematic structural diagram of an LCD micro projector according to the present invention is shown, which may specifically include the following structures: a projector main body, a light source assembly 13, a fresnel lens assembly, a reflection lens 9, and a lens assembly 10; the light source assembly 13, the fresnel lens assembly, the reflective lens 9 and the lens assembly 10 are arranged in the projector main body; the Fresnel lens assembly which converges light emitted by the light source assembly 13 into parallel light is arranged on one side of the light source assembly 13, the reflecting lens 9 is arranged on one side of the Fresnel lens assembly, which is far away from the light source assembly 13, and the lens assembly 10 is arranged at a position corresponding to the reflecting lens 9; the included angle between the central axis of the lens assembly 10 and the parallel light is greater than 90 degrees and less than 180 degrees.
Hereinafter, the LCD pico projector in the present exemplary embodiment will be further described.
In the embodiment of the present application, the light source assembly 13, the fresnel lens assembly, the reflective lens 9, and the lens assembly 10; the light source assembly 13, the fresnel lens assembly, the reflective lens 9 and the lens assembly 10 are arranged in the projector main body; the Fresnel lens assembly which converges light emitted by the light source assembly 13 into parallel light is arranged on one side of the light source assembly 13, the reflecting lens 9 is arranged on one side of the Fresnel lens assembly, which is far away from the light source assembly 13, and the lens assembly 10 is arranged at a position corresponding to the reflecting lens 9; the included angle between the central axis of the lens assembly 10 and the parallel light is greater than 90 degrees and less than 180 degrees. The design idea that the included angle formed by the incident light provided by the light source component 13 and the projection lens component 10 is greater than 90 degrees is adopted for the projector light path, so that the shading phenomenon caused by short focus of the lens is effectively improved, the image brightness of the projector is higher, and the experience feeling is better.
Hereinafter, the LCD pico projector in the present exemplary embodiment will be further described.
In an embodiment of the present application, the light source assembly 13, the fresnel lens assembly, the reflective lens 9, and the lens assembly 10 are disposed inside the projector main body; the light source assembly 13 includes a heat sink and an LED (light-emitting diode) light source; the LED light source is connected with a main control circuit board 1 used for changing the light irradiation direction, and the radiator is arranged on one side, close to the air blower 11, of the LED light source.
As an example, a heat sink for dissipating heat from the LED light source is provided on one side of the LED light source, the heat sink is integrally provided with the LED light source, and the heat sink is communicated with the blower 11.
In one embodiment, the light source assembly 13 generates heat, the heat is dissipated through the heat sink and the blower 11, and the heat is drawn out of the heat dissipation holes of the housing 14 by the suction force of the blower 11, so as to be discharged to the external environment.
In an embodiment of the present application, the fan assembly, the power supply, the sound cavity 2, the main control circuit board 1, the light source assembly 13, the fresnel lens assembly, the reflective lens 9, and the lens assembly 10 are disposed inside the housing 14; the housing 14 is provided with heat dissipation holes, and the positions of the heat dissipation holes correspond to the air outlet of the blower 11.
In a specific embodiment, the shape of the heat dissipation holes may be polygonal or circular, and the heat dissipation holes correspond to the air outlet of the blower 11.
In an embodiment of the present application, the projector main body includes a housing 14, a fan assembly, a power supply, a sound cavity 2, and a main control circuit board 1; the main control circuit board 1 is respectively electrically connected with the power supply, the light source assembly 13 and the fan assembly.
As an example, the LED light source is connected to a main control circuit board 1 for changing a light irradiation direction, and the main control circuit board 1 also functions to convert the light emitted from the light source assembly 13 into an angle, and convert the light emitted from the light source assembly 13 into light perpendicular to the fresnel lens assembly. And a light hopper 12 for converging light is arranged on one side of the main control circuit board 1 close to the Fresnel lens component.
As an example, the light source assembly 13 makes the light emitted by the light source assembly 13 better converge through the funnel 12, the funnel 12 is shaped like a funnel, the side with the larger opening is close to the fresnel lens assembly, and the side with the smaller opening is close to the main control circuit board 1.
In an embodiment of the present application, the sound cavity 2 is disposed at the bottom of the main control circuit board 1, and the light hopper 12 is disposed at one side of the main control circuit board 1 close to the fresnel lens assembly.
Referring to fig. 2, one side of the light source assembly 13 is provided with the fresnel lens assembly for converging the light emitted by the light source assembly 13 into parallel light, and the fresnel lens assembly includes a first fresnel lens 3, a heat insulation glass 4, an LCD display screen assembly 5 and a second fresnel lens 6 which are sequentially arranged. The first fresnel lens 3 is close to one side of the light source assembly 13, and the second fresnel lens 6 is far away from one side of the light source assembly 13.
It should be noted that, most fresnel lenses, also known as screw lenses, are sheets made of polyolefin materials by injection molding, and are also made of glass, one surface of the lens is a smooth surface, and the other surface is inscribed with concentric circles from small to large, and the texture of the fresnel lenses is designed according to the requirements of light interference and interference, relative sensitivity and receiving angle.
In a specific embodiment, the light source assembly 13 provides the light source assembly 13, integrates the light into parallel light beams through the light hopper 12 and the first fresnel lens 3, and projects the parallel light beams on the LCD display screen assembly 5, collects the display images on the LCD display screen assembly 5 through the second fresnel lens 6, reflects the display images to the lens assembly 10 through the reflection lens 9, and projects the display images on a flat plane in an enlarged manner; the heat insulation glass 4 insulates a part of the heat of the light source assembly 13, and reduces the heat projected to the LCD screen.
In one embodiment of the present application, the LCD panel assembly 5 includes a panel and a mounting member for securing the panel; the assembly is disposed about the display screen.
In an embodiment of the present application, the power supply is disposed on a backlight surface of the reflector 9; the power supply is electrically connected with the light source assembly 13 and the fan assembly respectively; i.e. the side of the mirror plate 9 not receiving parallel light, and the power supply is used to supply power to the light source assembly 13 and the fan assembly.
In one embodiment of the present application, the fan assembly includes a fan 7 and a blower 11 for dissipating heat from the light source assembly 13; and an air inlet of the blower 11 is communicated with the light source assembly 13, and an air outlet of the fan 7 is communicated with the Fresnel lens assembly.
As an example, the fan 7 is used for cooling the LCD panel assembly 5, and the fan 7 draws cold air from the outside to cool the LCD panel assembly 5, so as to meet the operating temperature requirement of the LCD panel assembly 5. And the air outlet of the fan 7 is communicated with the LCD display screen component 5.
In an embodiment of the present application, the lens assembly 10 is disposed at a position corresponding to the reflective mirror 9; the included angle between the central axis of the lens assembly 10 and the parallel light is greater than 90 degrees and less than 180 degrees; that is, the included angle between the parallel light and the central axis of the lens assembly 10 is greater than 90 degrees. The incident angle of the reflective mirror 9 to the parallel light is greater than 45 degrees and less than 90 degrees.
Referring to fig. 2, an included angle between the central axis of the lens assembly 10 and the parallel light may be 100 degrees, 135 degrees, 150 degrees, 170 degrees, or the like; the light path adopts the design idea that the incident light provided by the light source component 13 and the included angle A formed by the projection lens are greater than 90 degrees, so that the shading phenomenon caused by short focus of the lens is effectively improved, the picture brightness of the projector is higher, and the experience feeling is better.
As an example, the lens assembly 10 disposed at the position corresponding to the reflective lens 9 is: the parallel light forms an incident angle with the reflective mirror 9, and the lens assembly 10 is disposed on an extension of a reflection angle formed by the parallel light and the reflective mirror 9.
In an embodiment of the present application, the projector main body includes a housing 14, a fan assembly, a power supply, a sound cavity 2, and a main control circuit board 1; the main control circuit board 1 is respectively electrically connected with the power supply, the light source assembly 13 and the fan assembly; the power supply is electrically connected with the light source assembly 13 and the fan assembly respectively; the power supply is arranged on the backlight surface of the reflector plate 9.
In an embodiment of the present application, the lens assembly 10 includes a lens main body and an optical lens; the optical lens is arranged on one side of the lens body entering the light source component 13.
In an embodiment of the present application, the fan assembly, the power supply, the sound cavity 2, and the main control circuit board 1 are disposed inside the housing 14; specifically, the housing 14 is a part that wraps the fan assembly, the power supply, the sound cavity 2, the main control circuit board 1, the light source assembly 13, the fresnel lens assembly, the reflective lens 9, the lens assembly 10, and the like.
While preferred embodiments of the present invention have been described, additional variations and modifications of these embodiments may occur to those skilled in the art once they learn of the basic inventive concepts. Therefore, it is intended that the appended claims be interpreted as including preferred embodiments and all such alterations and modifications as fall within the scope of the embodiments of the utility model.
Finally, it should also be noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or terminal that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or terminal. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other like elements in a process, method, article, or terminal that comprises the element.
The LCD micro projector provided by the present invention is described in detail above, and the principle and the implementation of the present invention are explained in the present document by applying specific examples, and the description of the above examples is only used to help understanding the method and the core idea of the present invention; meanwhile, for a person skilled in the art, according to the idea of the present invention, there may be variations in the specific embodiments and the application scope, and in summary, the content of the present specification should not be construed as a limitation to the present invention.
Claims (9)
1. An LCD micro projector is characterized by comprising a projector main body, a light source component, a Fresnel lens component, a reflecting lens and a lens component;
the light source assembly, the Fresnel lens assembly, the reflecting lens and the lens assembly are arranged in the projector main body; the Fresnel lens assembly which converges light emitted by the light source assembly into parallel light is arranged on one side of the light source assembly, the reflecting lens is arranged on one side of the Fresnel lens assembly, which is far away from the light source assembly, and the lens assembly is arranged at the position corresponding to the reflecting lens;
the included angle between the central axis of the lens component and the parallel light is larger than 90 degrees and smaller than 180 degrees.
2. The LCD pico projector of claim 1, wherein the projector body comprises a housing, a fan assembly, a power supply, a sound chamber, and a main control circuit board;
the main control circuit board is respectively and electrically connected with the power supply, the light source assembly and the fan assembly; the power supply is electrically connected with the light source assembly and the fan assembly respectively;
the fan assembly, the power supply, the sound cavity and the main control circuit board are arranged in the shell; the power supply is arranged on the backlight surface of the reflector plate, and the sound cavity is arranged at the bottom of the main control circuit board.
3. The LCD pico projector of claim 2, wherein the fan assembly comprises a fan and a blower for dissipating heat from the light source assembly;
and an air inlet of the air blower is communicated with the light source assembly, and an air outlet of the fan is communicated with the Fresnel lens assembly.
4. The LCD pico projector of claim 3, wherein the housing is provided with heat dissipation holes;
the positions of the heat dissipation holes correspond to the air outlet of the air blower.
5. The LCD pico projector of claim 3, wherein the light source assembly comprises a heat sink and an LED light source;
the LED light source is connected with a main control circuit board used for changing the light irradiation direction, and the radiator is arranged on one side, close to the air blower, of the LED light source.
6. The LCD micro-projector as claimed in claim 2, wherein a light funnel for collecting light is disposed on a side of the main control circuit board close to the fresnel lens assembly.
7. The LCD micro-projector as claimed in claim 1, wherein the Fresnel lens assembly comprises a first Fresnel lens, a heat insulation glass, an LCD display screen assembly and a second Fresnel lens which are arranged in sequence;
the first Fresnel lens is close to one side of the light source assembly, and the second Fresnel lens is far away from one side of the light source assembly.
8. The LCD pico projector of claim 7, wherein the LCD panel assembly comprises a panel and a mounting member for securing the panel;
the assembly is disposed about the display screen.
9. The LCD pico projector of claim 1, wherein the lens assembly comprises a lens body and an optical lens;
the optical lens is arranged on one side of the lens main body entering the light source component.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122325997.6U CN216351746U (en) | 2021-09-24 | 2021-09-24 | LCD micro projector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122325997.6U CN216351746U (en) | 2021-09-24 | 2021-09-24 | LCD micro projector |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216351746U true CN216351746U (en) | 2022-04-19 |
Family
ID=81171519
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122325997.6U Active CN216351746U (en) | 2021-09-24 | 2021-09-24 | LCD micro projector |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216351746U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114995034A (en) * | 2022-06-15 | 2022-09-02 | 天津华来科技股份有限公司 | Projection system and projector |
-
2021
- 2021-09-24 CN CN202122325997.6U patent/CN216351746U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114995034A (en) * | 2022-06-15 | 2022-09-02 | 天津华来科技股份有限公司 | Projection system and projector |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| TW528919B (en) | Light source for projector and projection type image display apparatus using thereof | |
| GB2418997A (en) | Image projector having LED light source and parallel arrangement of PCBs | |
| TWI354810B (en) | Optical system unit and projector | |
| JPS62111233A (en) | View finder | |
| JPH03241983A (en) | Rear projection type receiver | |
| CN109188834A (en) | A kind of projector | |
| CN105446061B (en) | Electronic equipment | |
| CN111856845A (en) | Optical machine assembly of projection equipment and projection equipment | |
| CN100362390C (en) | Liquid crystal display projector | |
| CN109164667A (en) | A kind of projector | |
| CN216351746U (en) | LCD micro projector | |
| CN100523991C (en) | Projector | |
| CN216670485U (en) | LCD projecting apparatus that possesses heat-proof function | |
| CN113917733A (en) | Mini-LED backlight display screen | |
| JP2020004620A (en) | Lighting device | |
| US7866824B2 (en) | Sealed lamp device and projector | |
| CN216351727U (en) | Projector | |
| CN217386125U (en) | Off-axis angle projector | |
| CN110989275A (en) | Simple installation single LCD projector with dustproof structure | |
| JP4265636B2 (en) | Projection display device | |
| CN219978682U (en) | Projection apparatus | |
| CN220188845U (en) | Off-axis projector with sealing and heat dissipation functions | |
| CN213365258U (en) | Projector with clock function and ceiling imaging | |
| CN211180513U (en) | simple installation single L CD projector with dustproof structure | |
| JP2005274739A (en) | Optical apparatus and projector |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CP02 | Change in the address of a patent holder | ||
| CP02 | Change in the address of a patent holder |
Address after: 518100, 201, 2nd Floor, Building 2, Longbi Industrial Zone, No. 27 Dafa Road, Dafapu Community, Bantian Street, Longgang District, Shenzhen City, Guangdong Province Patentee after: SHENZHEN QILI ELECTRONIC TECHNOLOGY Co.,Ltd. Address before: 518100 floor 3, building B, Hongyi Industrial Park, No. 4010, banxuegang Avenue, Bantian street, Longgang District, Shenzhen, Guangdong Province Patentee before: SHENZHEN QILI ELECTRONIC TECHNOLOGY Co.,Ltd. |