CN109188834A - A kind of projector - Google Patents
A kind of projector Download PDFInfo
- Publication number
- CN109188834A CN109188834A CN201811023403.2A CN201811023403A CN109188834A CN 109188834 A CN109188834 A CN 109188834A CN 201811023403 A CN201811023403 A CN 201811023403A CN 109188834 A CN109188834 A CN 109188834A
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- China
- Prior art keywords
- brightening piece
- projector
- reflecting mirror
- projection lens
- light
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Classifications
-
- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
- G03B21/00—Projectors or projection-type viewers; Accessories therefor
- G03B21/14—Details
- G03B21/20—Lamp housings
- G03B21/2006—Lamp housings characterised by the light source
- G03B21/2013—Plural light sources
-
- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
- G03B21/00—Projectors or projection-type viewers; Accessories therefor
- G03B21/005—Projectors using an electronic spatial light modulator but not peculiar thereto
- G03B21/006—Projectors using an electronic spatial light modulator but not peculiar thereto using LCD's
-
- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
- G03B21/00—Projectors or projection-type viewers; Accessories therefor
- G03B21/14—Details
- G03B21/16—Cooling; Preventing overheating
-
- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
- G03B21/00—Projectors or projection-type viewers; Accessories therefor
- G03B21/14—Details
- G03B21/20—Lamp housings
- G03B21/2006—Lamp housings characterised by the light source
- G03B21/2033—LED or laser light sources
-
- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
- G03B21/00—Projectors or projection-type viewers; Accessories therefor
- G03B21/14—Details
- G03B21/20—Lamp housings
- G03B21/2053—Intensity control of illuminating light
-
- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
- G03B21/00—Projectors or projection-type viewers; Accessories therefor
- G03B21/14—Details
- G03B21/20—Lamp housings
- G03B21/2066—Reflectors in illumination beam
-
- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
- G03B21/00—Projectors or projection-type viewers; Accessories therefor
- G03B21/14—Details
- G03B21/20—Lamp housings
- G03B21/208—Homogenising, shaping of the illumination light
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Multimedia (AREA)
- Signal Processing (AREA)
- Optics & Photonics (AREA)
- Liquid Crystal (AREA)
Abstract
The invention discloses a kind of projectors in light path design field.Projector master includes: area source 10, diffuser plate 20, brightening piece 30 and projection lens 40, and the area source 10, diffuser plate 20, brightening piece 30 and projection lens 40 are arranged successively setting；The light source that the area source 10 exports passes through 20 DIFFUSION TREATMENT of diffuser plate, adds lustre to after processing using brightening piece 30, inputs the projection lens 40.The projector 1 further include: heat sink 50, fan 60, controller 56, the first reflecting mirror 701, the second reflecting mirror 702, LCD80 and Fresnel Lenses 90.By the above-mentioned means, projector of the invention can obtain the imaging of high brightness high contrast, it is not high and non-uniform to solve the problems, such as that not clear enough brightness is imaged in conventional one-piece formula LCD projector.
Description
Technical field
The present invention relates to light path design field, in particular to a kind of projector.
Background technique
Currently, traditional one chip LCD projector (liquid crystal projection apparatus), with traditional cinematographic projector or projector principle
It is closely similar, i.e., in the position where original filmstrip, using a piece of LCD color liquid crystal screen as imaging
Source carries out strong light projection through back high-power bulb or LED light, then through Fresnel Lenses to light shaping, imaging, keystone
Deng, most afterwards through projector magnifier special head, by the image on the very high LCD liquid crystal display of brightness, enlarging projection to Bai Mushang or
On wall, make user's acquisition tens to the image of several hundred inch sizes, it is much like with the effect watched movie and experience.Conventional one-piece formula
LCD projector, has the characteristics that of simple structure and low cost, possesses certain share in projector market, especially in low side
In consumer group, possess larger attraction.With the maturation of technology, one chip LCD projector also starts toward 720p, 1080p, 4K
Etc. high-resolution direction develop, made to be mainly in the past the projector that uses of some audio-visual fans, gradually be connect by ordinary consumer
By with use.With cheap one chip LCD projector, personal home theater is set up, enjoys the view as cinema at home
Experience is listened, the selection of more and more users is had become.
In realizing process of the present invention, inventor's discovery is above, and at least there are the following problems in the related technology: compared to DLP
Digital technology projector (DLP formula projector, brightness decay is slower, and the contrast of presentation is higher), although one chip LCD projector
It is very strong in terms of the expressive force of color, but the contrast showed is lower, it is the clarity of the image and surrounding that cast out, bright
Degree is not uniform enough, influences perception；How by optimization light channel structure, the brightness and contrast of imaging is improved, is Single panel LCD projection
Instrument problem in the urgent need to address.
Summary of the invention
In view of the above drawbacks of the prior art, the object of the present invention is to provide a kind of projectors of high brightness high contrast.
The purpose of the present invention is what is be achieved through the following technical solutions:
The present invention provides a kind of projector, comprising: area source, diffuser plate, brightening piece and projection lens, the area source,
Diffuser plate, brightening piece and projection lens are arranged successively setting；
The light source of area source output passes through the diffuser plate DIFFUSION TREATMENT, adds lustre to after processing using brightening piece,
Input the projection lens.
Optionally, the area source includes: substrate and several LED lamp beads；
The LED lamp bead is evenly arranged on a surface of the substrate.
Optionally, the projector further includes heat sink；
The heat sink is fitted in another surface of the substrate far from the LED lamp bead on one side.
Optionally, the projector further includes temperature sensor, controller and fan；
The air intake vent of the fan is close to the heat sink；
The temperature sensor is set to the heat sink, for detecting the temperature of the heat sink；
The controller is connect with the fan and temperature sensor respectively, for what is detected when the temperature sensor
When temperature is greater than threshold value, the starting fan is controlled, the fan is otherwise controlled and closes.
Optionally, the projector further includes the first reflecting mirror, is arranged several through-holes on first reflecting mirror, and described
One reflecting mirror fits in a surface of the substrate, and a LED lamp bead is located in a through-hole.
Optionally, first reflecting mirror is high temperature insulating material, has high reflectance.
Optionally, the brightening piece includes orthogonal type brightening piece and reflection-type brightening piece；
The orthogonal type brightening piece be 2 longitudinal stacks DEF brightening piece, the reflection-type brightening piece be DBEF film or
The combination of APCF film and polaroid；
One surface of the orthogonal type brightening piece close to the diffuser plate, another side close to the reflection-type brightening piece one
Face.
Optionally, the projector further includes LCD, Fresnel Lenses；
The one side of the LCD is close to the another side of the reflection-type brightening piece, and the another side of the LCD is close to the luxuriant and rich with fragrance alunite
That lens；
The brightening piece adds lustre to that treated light obtains the light beam with image-forming information by the LCD, then passes through the phenanthrene
On Nie Er lens focus to the projection lens.
Optionally, the Fresnel Lenses is plano lens on one side, and another side is screwed convex lens, the Fresnel
The one side of lens plano lens is close to the LCD, and another side is close to the projection lens and the projection lens is placed on the phenanthrene
In the focus of Nie Er lens.
Optionally, the projector further includes the second reflecting mirror, and second reflecting mirror is multiple, second reflecting mirror
It is vertically installed in the surrounding of the area source, the diffuser plate and the brightening piece.
Compared with prior art, the beneficial effects of the present invention are: being in contrast to the prior art, the embodiment of the present invention is mentioned
A kind of liquid crystal projection apparatus structure of area source formula is supplied；By setting area source for point light source, setting is uniformly arranged on area source
The large-power LED light bead of column obtains the light source of uniform high brightness, obtains uniform light by diffuser plate, passes through brightening piece standard
Invalid light is isolated in direct join, is then improved again by the overall structure of the first reflecting mirror, the second reflecting mirror, diffuser plate and brightening piece
The utilization rate of light, brightness is larger when light beam being made to reach camera lens, to improve the brightness and contrast of projection image.
Detailed description of the invention
Fig. 1 is the side overall structure diagram of the projector in first embodiment of the invention；
Fig. 2 is the side overall structure diagram of the projector in second embodiment of the invention；
Fig. 3 is that the area source of the projector in first embodiment and second embodiment and the Facad structure of the first reflecting mirror show
It is intended to.
Specific embodiment
The present invention is described in detail combined with specific embodiments below.Following embodiment will be helpful to the technology of this field
Personnel further understand the present invention, but the invention is not limited in any way.It should be pointed out that the ordinary skill of this field
For personnel, without departing from the inventive concept of the premise, various modifications and improvements can be made.These belong to the present invention
Protection scope.
For the ease of connection structure restriction, the present invention is to refer to the position restriction for carrying out component with the direction that optical path is advanced,
For example, area source 10 is the head of projector, it is " side " or " surrounding " direction around this direction, light issues logical from area source 10
The direction for crossing diffuser plate 20 is " preceding " direction, and the direction of fitting heat sink 50 is " rear " direction.
Referring to Figure 1, Fig. 2 and Fig. 3, the present invention provides a kind of projectors 1, comprising: area source 10, increases diffuser plate 20
Mating plate 30 and projection lens 40, the area source 10, diffuser plate 20, brightening piece 30 and projection lens 40 are arranged successively setting；Institute
The light source of the output of area source 10 is stated by 20 DIFFUSION TREATMENT of diffuser plate, added lustre to after processing using brightening piece 30, input
The projection lens 40.The projector 1 further include: heat sink 50, fan 60, controller 56, the first reflecting mirror 701, second
Reflecting mirror 702, LCD80 and Fresnel Lenses 90.
Above-mentioned area source 10 includes that substrate 101 and several LED lamp beads 102 of LED, the LED lamp bead 102 are evenly arranged in institute
It states on a surface of substrate 10.It is additionally provided with the first reflecting mirror 701 on the area source 10, is set on first reflecting mirror 701
It sets several through-holes (not indicating), first reflecting mirror 701 fits in a surface of the substrate 10, a LED lamp bead 102
In a through-hole (not indicating).The another side of the substrate 10 fits together on one side with the heat sink 50.
In the first embodiment of the present invention and second embodiment, it is uniform-distribution on the substrate 101 and is arranged in isosceles triangle
Several adopting surface mounted LED lamp beads 102 of column mitigate the influence that array LED causes strip light band, the light for providing it to greatest extent
It is more uniform, and single 102 power 1W of LED lamp bead or so, general power is in 50W between 200W.
In other some embodiments, depending on the quantity of LED lamp bead 102 can need according to demand, do not need to adhere rigidly to and this
The restriction of embodiment in invention, the excessively few then brightness of the quantity of LED lamp bead 102 is too low, excessively then radiates difficult and reduces bottom
The effective area of first reflecting mirror 701 is especially easy to bake bad LCD liquid crystal display.
The front of the area source 10 is arranged in above-mentioned diffuser plate 20, and the light that LED lamp bead 102 issues enters the diffuser plate
20 the DIFFUSION TREATMENTs such as be diffused, be atomized after enter brightening piece 30, guarantee that great power LED flat panel backlight is board-like, it is last sent
Not regular LED array light, uniformly scatters light, keeps the brightness of image finally cast out uniform, can't see
The hot spot of LED lamp bead 102.
Above-mentioned brightening piece 30 includes orthogonal type brightening piece 301 and reflection-type brightening piece 302, the orthogonal type brightening piece 301
A surface close to the diffuser plate, one side of the another side close to the reflection-type brightening piece.20 DIFFUSION TREATMENT of diffuser plate
Light afterwards enters to be added lustre to after processing by orthogonal type brightening piece 301 and reflection-type brightening piece 302 respectively, into LCD80.
The orthogonal type brightening piece 301 is the DEF brightening piece of 2 longitudinal stacks, and the orthogonal type brightening piece 301 can will expand
The light scattered on 20 that falls apart carries out shaping, makes to obtain the light that 20 uniform treatment of diffuser plate is crossed, and the angle of injection becomes smaller, close to
Parallel rays increases positive brightness.And do not meet the scattering light of shooting angle, then it is reflected on neighbouring corner angle, repairs
Positive-angle is allowed to project again close to after directional light, this light that these were discarded can originally becomes utilizable certain party
To light.
The reflection-type brightening piece 302 is the combination of DBEF film or APCF film and polaroid.Since LCD80 only allows the pole P
Polarised light (being parallel to light exit direction) passes through, and the pole S polarised light (perpendicular to light exit direction) directly becomes heat on LCD80
It consumes.And the reflection-type brightening piece 302 optionally leads directly to the effective pole P polarised light, reflects the invalid pole S polarization
Light, the pole S polarised light become after 702 multipath reflection of the first reflecting mirror 701 and the second reflecting mirror and contain the pole P and the pole S
Polarization light, then by the reflection-type brightening piece 302 and obtain the effective pole P polarised light, reflection-type cannot be penetrated and added lustre to
The pole the S polarised light of piece 302 is reflected back utilization again, moves in circles.The reflection-type brightening piece 302 avoids the pole S polarization
Light excessively accumulates and burns out LCD80, is effectively reduced the surface temperature of LCD80, at the same with the first reflecting mirror 701 and the second reflecting mirror
702 when being coupled, and improves the utilization rate of optical fiber.
The front of Fresnel Lenses 90 is arranged in above-mentioned projection lens 40, and is placed on the focus of the Fresnel Lenses 90
On, the projection lens 40 is for amplifying imaging ray.In the first embodiment of the present invention, screen 401 be placed on it is described
The front of projection lens 40 adjusts the size of imaging by adjusting the screen 401 to the distance of the projection lens 40.This
In the second embodiment of invention, the front of projection lens 40 is placed with third reflecting mirror 703, and the third reflecting mirror 703 is used for
Change radiation direction, the projection lens 40 and the screen 401 are placed at an angle, and light passes through projection lens 40, warp
The third reflecting mirror 703 is crossed to be reflected on the screen 401.In a second embodiment, by adjusting the screen 401 to
The distance of three reflecting mirrors 703 adjusts the size of imaging；It, can be at image position by adjusting the angle of the third reflecting mirror 703
It sets and is flexibly changed, so as to which the screen 401 to be arranged on the position wanted to set up.
Above-mentioned heat sink 50 be fitted in the substrate 101 far from LED lamp bead 102 while on, another side is close
The air intake vent of fan 60, the heat sink are taken away heat by fan 60 in time, improve radiating efficiency, reduce LED lamp bead work
Make temperature.The heat sink 50 is identical as the back area of substrate 101, and the material of the heat sink 50 is aluminium or copper.Institute
It states and is provided with temperature sensor 501 in heat sink 50, the temperature sensor 501 is connect with controller 56, the temperature sensing
Device 501 is used to measure the temperature of heat sink 50 and by data feedback to controller 56.
Said fans 60 place the rear of the heat sink 50, the air intake vent of the fan 60 close to the heat sink 50,
For reducing the surface temperature of the heat sink 50, the fan 60 is two or more, the fan connection and controller 56
Connection, the controller 56 control the switch of the dispersion 60.
One end of above controller 56 connects the heat sink 50, and the other end connects the fan 60, the controller 56
For obtaining the data of temperature sensor 501 and controlling the switch of fan 60.When the temperature that the temperature sensor detects is big
When threshold value, the starting fan is controlled, the fan is otherwise controlled and closes.
Above-mentioned first reflecting mirror 701 and the second reflecting mirror 702 are high temperature insulating material, have high reflectance.Wherein, described
First reflecting mirror 701 is fitted on the substrate 101, and several through-holes (not indicating) is uniformly arranged on first reflecting mirror 701,
Be provided with a LED lamp bead 102 on one through-hole (not indicating), first reflecting mirror 701 be used for by LED lamp bead 102 its
He scatters light, reflected light and diffuser plate 20 and the reflected light of brightening piece 30, then is reflected back front, improves the benefit of light
With rate.Second reflecting mirror 702 be it is multiple, second reflecting mirror 702 is vertically installed in the area source, the diffuser plate
With the surrounding of the brightening piece, second reflecting mirror 702 by scattering, reflect, be reflected into light herein, reflect back, light
Line, finally by the first reflecting mirror 701 on substrate 10, is re-reflected on the diffuser plate 20 of front, is promoted after multipath reflects
The utilization rate of light.In the second embodiment of the present invention, it is additionally provided with third reflecting mirror 703, the third reflecting mirror 703 has
High reflectance, the setting of third reflecting mirror 703, for changing optical path direction, make the position of screen 401 in 40 front of projection lens
Setting can flexible setting.
Above-mentioned LCD80 is arranged between reflection-type brightening piece 302 and Fresnel Lenses 90, and brightening piece 30 adds lustre to, and treated
After light enters LCD80, obtains the light beam with image-forming information and pass through the Fresnel Lenses 90.In the first embodiment of the present invention and
In second embodiment, between the LCD80 and the reflection-type brightening piece 302 between be divided into 10 to 50mm.In others
In embodiment, the visual power needs in interval between the LCD80 and the reflection-type brightening piece 302 adjust, and do not need to arrest
The restriction of mud and embodiment in the present invention, it is spaced too close together, it is easy to appear hot spot, and keep LCD screen temperature excessively high, is easy to burn out LCD
Liquid crystal display；Then luminous intensity can decline too far, reduce the utilization rate of light, also increase projector machine volume.And described
Cold air is sent into this sky by fan or air blower by settable heat dissipation wind channel between LCD80 and the reflection-type brightening piece 302
Between, wind-cooling heat dissipating is carried out for the surface LCD80, makes its operating temperature lower than 60 DEG C Celsius, guarantees the safety and normal work of LCD80
Temperature prolongs its service life.
Above-mentioned Fresnel Lenses 90 is arranged between LCD80 and projection lens 40, and the brightening piece 30 adds lustre to, and treated
Light obtains the light beam with image-forming information by the LCD80, then focuses on the projection lens by the Fresnel Lenses 90
On 40.90 one side of Fresnel Lenses is plano lens 901, and another side is screwed convex lens 902, and the Fresnel is saturating
The one side of 90 plano lens 901 of mirror is close to the LCD80, and another side is close to the projection lens 40 and the projection lens 40 is placed
In the focus of the Fresnel Lenses 90.
Through the invention middle embodiment structure design, projector of the invention can obtain high brightness high contrast at
It is not high and non-uniform to solve the problems, such as that not clear enough brightness is imaged in conventional one-piece formula LCD projector for picture.Powerful area source 10
The light of high brightness is provided, diffuser plate 20 makes incident light more evenly, and 30 collimated incident optical fiber of brightening piece simultaneously filters invalid light, and first
Reflecting mirror 701 and the second reflecting mirror 702 increase the utilization rate of light, and heat sink 50 and fan 60 are used for wind cooling temperature lowering.By above
It is not high and non-uniform to solve the problems, such as that not clear enough brightness is imaged in LCD projector, while also solving high-power LCD for structure
Projector is easily due to the problem for causing LCD aging speed fast of generating heat.
The embodiment of the invention provides a kind of liquid crystal projection apparatus structures of area source formula；By setting face light for point light source
Source is arranged evenly distributed large-power LED light bead on area source, obtains the light source of uniform high brightness, obtained by diffuser plate
Uniform light is collimated by brightening piece and invalid light is isolated, then again by the first reflecting mirror, the second reflecting mirror, diffuser plate and
The overall structure of brightening piece improves the utilization rate of light, and brightness is larger when light beam being made to reach camera lens, to improve the bright of projection image
Degree and contrast.
Finally, it should be noted that the above embodiments are merely illustrative of the technical solutions of the present invention, rather than its limitations；At this
Under the thinking of invention, it can also be combined between the technical characteristic in above embodiments or different embodiments, and exist such as
Many other variations of the upper different aspect of the invention, for simplicity, they are not provided in details；Although reference
Invention is explained in detail for previous embodiment, those skilled in the art should understand that: it still can be right
Technical solution documented by foregoing embodiments is modified, or is equivalently replaced to wherein regional development and technology feature；And this
It modifies or replaces, the range for technical solution of various embodiments of the present invention that it does not separate the essence of the corresponding technical solution.
Claims (10)
1. a kind of projector characterized by comprising area source, diffuser plate, brightening piece and projection lens, the area source, expansion
It falls apart, brightening piece and projection lens are arranged successively setting；
The light source of area source output passes through the diffuser plate DIFFUSION TREATMENT, adds lustre to after processing using brightening piece, input
The projection lens.
2. projector according to claim 1, which is characterized in that
The area source includes: substrate and several LED lamp beads；
The LED lamp bead is evenly arranged on a surface of the substrate.
3. projector according to claim 2, which is characterized in that the projector further includes heat sink；
The heat sink is fitted in another surface of the substrate far from the LED lamp bead on one side.
4. projector according to claim 3, which is characterized in that the projector further includes temperature sensor, controller
And fan；
The air intake vent of the fan is close to the heat sink；
The temperature sensor is set to the heat sink, for detecting the temperature of the heat sink；
The controller is connect with the fan and temperature sensor respectively, the temperature for detecting when the temperature sensor
When greater than threshold value, the starting fan is controlled, the fan is otherwise controlled and closes.
5. projector according to claim 2, which is characterized in that
The projector further includes the first reflecting mirror, and several through-holes, the first reflecting mirror patch are arranged on first reflecting mirror
Together in a surface of the substrate, a LED lamp bead is located in a through-hole.
6. projector according to claim 5, which is characterized in that
First reflecting mirror is high temperature insulating material, has high reflectance.
7. projector according to claim 1, which is characterized in that
The brightening piece includes orthogonal type brightening piece and reflection-type brightening piece, and the orthogonal type brightening piece is 2 longitudinal stacks
DEF brightening piece, the reflection-type brightening piece are the combination of DBEF film or APCF film and polaroid；
One surface of the orthogonal type brightening piece is close to the diffuser plate, one side of the another side close to the reflection-type brightening piece.
8. projector according to claim 1, which is characterized in that the projector further includes LCD, Fresnel Lenses；
For the one side of the LCD close to the another side of the reflection-type brightening piece, the another side of the LCD is saturating close to the Fresnel
Mirror；
The brightening piece adds lustre to that treated light obtains the light beam with image-forming information by the LCD, then passes through the Fresnel
On lens focus to the projection lens.
9. projector according to claim 8, which is characterized in that
The Fresnel Lenses is plano lens on one side, and another side is screwed convex lens, the Fresnel Lenses plano lens
One side close to the LCD, another side is close to the projection lens and the projection lens is placed on the Fresnel Lenses
In focus.
10. projector according to claim 8, which is characterized in that the projector further includes the second reflecting mirror, and described
Two-mirror be it is multiple, second reflecting mirror is vertically installed in the four of the area source, the diffuser plate and the brightening piece
Week.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811023403.2A CN109188834A (en) | 2018-09-03 | 2018-09-03 | A kind of projector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811023403.2A CN109188834A (en) | 2018-09-03 | 2018-09-03 | A kind of projector |
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|---|---|
| CN109188834A true CN109188834A (en) | 2019-01-11 |
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| CN201811023403.2A Pending CN109188834A (en) | 2018-09-03 | 2018-09-03 | A kind of projector |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109725480A (en) * | 2019-02-27 | 2019-05-07 | 广西佳微科技股份有限公司 | A kind of LCD projection arrangement and design method |
| CN109839795A (en) * | 2019-02-27 | 2019-06-04 | 广西佳微科技股份有限公司 | A kind of compact projection module |
| CN109872657A (en) * | 2019-04-10 | 2019-06-11 | 广东工业大学 | A kind of outdoor projection equipment |
| CN110262583A (en) * | 2019-06-06 | 2019-09-20 | 深圳市火乐科技发展有限公司 | A kind of cooling control system, projector and its cooling control method |
| CN110727163A (en) * | 2019-10-29 | 2020-01-24 | 深圳市稻兴实业有限公司 | Novel monolithic LCD projector of optical imaging road environment |
| CN111688187A (en) * | 2020-07-14 | 2020-09-22 | 深圳市布尔三维技术有限公司 | Projection device based on LCD (liquid crystal display), printer and illumination control method |
| CN114995034A (en) * | 2022-06-15 | 2022-09-02 | 天津华来科技股份有限公司 | Projection system and projector |
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| CN109839795A (en) * | 2019-02-27 | 2019-06-04 | 广西佳微科技股份有限公司 | A kind of compact projection module |
| CN109839795B (en) * | 2019-02-27 | 2021-04-09 | 广西佳微科技股份有限公司 | Small projection module |
| CN109725480B (en) * | 2019-02-27 | 2021-04-27 | 广西佳微科技股份有限公司 | LCD projection device and design method |
| CN109872657A (en) * | 2019-04-10 | 2019-06-11 | 广东工业大学 | A kind of outdoor projection equipment |
| CN110262583A (en) * | 2019-06-06 | 2019-09-20 | 深圳市火乐科技发展有限公司 | A kind of cooling control system, projector and its cooling control method |
| CN110727163A (en) * | 2019-10-29 | 2020-01-24 | 深圳市稻兴实业有限公司 | Novel monolithic LCD projector of optical imaging road environment |
| CN111688187A (en) * | 2020-07-14 | 2020-09-22 | 深圳市布尔三维技术有限公司 | Projection device based on LCD (liquid crystal display), printer and illumination control method |
| CN114995034A (en) * | 2022-06-15 | 2022-09-02 | 天津华来科技股份有限公司 | Projection system and projector |
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