CN105824176A - Curved surface reflecting type ultra-short focal projection lens based on mems - Google Patents
Curved surface reflecting type ultra-short focal projection lens based on mems Download PDFInfo
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- CN105824176A CN105824176A CN201610119047.9A CN201610119047A CN105824176A CN 105824176 A CN105824176 A CN 105824176A CN 201610119047 A CN201610119047 A CN 201610119047A CN 105824176 A CN105824176 A CN 105824176A
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- mems
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- mirror
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- 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
- G03B21/142—Adjusting of projection optics
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B26/00—Optical devices or arrangements for the control of light using movable or deformable optical elements
- G02B26/08—Optical devices or arrangements for the control of light using movable or deformable optical elements for controlling the direction of light
- G02B26/10—Scanning systems
-
- 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
- G03B21/2013—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
- G03B21/14—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
- G03B21/2066—Reflectors in illumination beam
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Mechanical Optical Scanning Systems (AREA)
- Optical Elements Other Than Lenses (AREA)
Abstract
The invention relates to the field of optics, and provides a curved surface reflecting type ultra-short focal projection lens based on mems. The curved surface reflecting type ultra-short focal projection lens based on the mems comprises a short focal projection lens body which comprises a laser light source module, a scanning module and a free-form surface reflecting mirror. The light rays emitted by the laser light source module pass through the scanning module and the free-form surface reflecting mirror in turn. The curved surface reflecting type ultra-short focal projection lens based on the mems has sufficient light intensity, high resolution and wide color gamut. Emergent light of the laser light source module is incident to the laser scanning module and then emergent out of the scanning module and then incident to the free-form surface reflecting mirror and reflected to a screen through the free-form surface reflecting mirror so as to realize projection.
Description
Technical field
The present invention relates to optical field, be specifically related to ultrashort out-of-focus projection device.
Background technology
In recent years, short focus projector is increasingly becoming the focus of domestic scialyscope visual field.Short focus projector is adjusted the distance and is required little, often has only to the projector distance of tens centimetres, just can be projected out big picture.Compare Conventional projection facility to have and more save space, the advantage such as easy for installation.But the design difficulty of short focus projector comes not only from how to realize the picture that shorter focal length is bigger, the most also requiring that resolution is high, colour gamut is wide, and light intensity is enough.Existing short focus projector cannot meet the demand simultaneously.
Summary of the invention
It is an object of the invention to provide a kind of curved face reflecting type ultrashort out-of-focus projection based on mems camera lens, to solve above-mentioned technical problem.
Technical problem solved by the invention can realize by the following technical solutions:
A kind of curved face reflecting type ultrashort out-of-focus projection based on mems camera lens, including a short out-of-focus projection lens bodies, it is characterised in that described short out-of-focus projection lens bodies includes a laser light source module, one scan module, a free-form surface mirror；
The light that described laser light source module sends approach scan module, free-form surface mirror successively.
The present invention has enough light intensities, and resolution is high, colour gamut is wide.The emergent light of laser light source module is incident to laser scanning module, is incident on free-form surface mirror, reflexes on screen through free-form surface mirror after the most scanned module outgoing, it is achieved projection.
Described laser light source module includes red light-emitting element, blue light emitting element, green luminescence element, described laser light source module also includes trichroism Multiplexing apparatus, described red light-emitting element, described blue light emitting element, described green luminescence element light emission direction towards described trichroism Multiplexing apparatus, with the emergent light that emergent light is described laser light source module of described trichroism Multiplexing apparatus.
Realize photosynthetic effect.
Described trichroism Multiplexing apparatus is trichroism conjunction light eyeglass.The present invention realizes photosynthetic effect by choosing trichroism conjunction light eyeglass, has saved the area of device.
Described scan module is the scan module of a reflective deflection；
Vertically upward, the emergent light of described scan module is positioned at the rear of described scan module towards the reflecting surface of described free-form surface mirror, described free-form surface mirror to the light emission direction of described laser light source module.
The size of saver.
Described scan module includes that a MEMS, reflection unit, described MEMS include that two mutually perpendicular rotating shafts, two described rotating shafts are all connected with a reflection unit；
The light that described laser light source module sends is projected to the intersection point of two described rotating shafts, and the light that sends of described laser light source module is towards the reflecting surface of described reflection unit.
Facilitate implementation laser light source module to be reflected device and reflect.
Two orthogonal rotating shafts are fixed and are connected and composed cross matrix, and described reflection unit removably connects with described cross matrix.It is conveniently replaceable reflection unit.
Described scan module also includes that deflection coil and magnet system, described deflection coil and magnet system produce rotating shaft described in magnetically-actuated and rotate.
Realize two orthogonal rotating shafts to rotate, it is achieved reflection unit realizes the different deflection to light.
Being equipped with angular transducer in two described rotating shafts, described angular transducer is a wireless senser, described wireless senser and microprocessor system wireless connections, and described microprocessor system connects described deflection coil.
Facilitate implementation detection and the adjustment in real time of axis of rotation situation.
Each frame light beam of described scan module outgoing is symmetrical about horizontal line, and described free-form surface mirror is the concave mirror of indent.Described concave mirror is centrally located on described horizontal line.
Each frame light beam of described scan module outgoing is symmetrical about horizontal line, and described free-form surface mirror is the convex reflecting mirror of evagination.Described convex reflecting mirror is centrally located on described horizontal line.
Each frame light beam of described scan module outgoing is respectively positioned on horizontal top, and described free-form surface mirror is the concave mirror of indent.Described concave mirror also is located at described horizontal top.
Each frame light beam of described scan module outgoing is symmetrical about horizontal line, and described free-form surface mirror is the convex reflecting mirror of evagination.Described convex reflecting mirror also is located at described horizontal top.
Described scan module uses scan mode the most in the same direction, and after each two field picture of described scan module terminates, the original projection point of next frame image is identical with the original projection of previous frame image point.
It is easy to ensure the quality of projection image.
The reflecting surface of described free-form surface mirror can be an XY multinomial face.XY multinomial face is a series of multinomials based on conical surface constant compositions, and multinomial can be launched into xmyn, wherein (m+n)≤10,
Wherein c is radius of curvature, and k is quadratic surface coefficient, CjFor xmynCoefficient.
Described free-form surface mirror includes that a matrix, described matrix are acrylic or glass is made, and the side of described matrix is provided with a reflective membrane；
Described matrix is provided with a cooling medium, and described cooling medium is positioned at the junction of described matrix and described reflective membrane.
The present invention is by being provided with cooling medium on free-form surface mirror, it is achieved the effect of cooling, it is ensured that the temperature of the reflecting surface of free-form surface mirror, it is ensured that the quality of reflection light.
Accompanying drawing explanation
Fig. 1 is a kind of light path schematic diagram of the present invention；
Fig. 2 is the part light path schematic diagram that the present invention is embodied as 1；
Fig. 3 is the part light path schematic diagram that the present invention is embodied as 2；
Fig. 4 is the part light path schematic diagram that the present invention is embodied as 3；
Fig. 5 is the part light path schematic diagram that the present invention is embodied as 4.
Detailed description of the invention
For the technological means making the present invention realize, creation characteristic, reach purpose and be easy to understand with effect, the present invention is expanded on further below in conjunction with being specifically illustrating.
Seeing Fig. 1, Fig. 2, Fig. 3, Fig. 4, Fig. 5, a kind of curved face reflecting type ultrashort out-of-focus projection based on mems camera lens, including a short out-of-focus projection lens bodies, short out-of-focus projection lens bodies includes a laser light source module 1, one scan module 2, free-form surface mirror 3；The light that laser light source module 1 sends approach scan module 2 successively, free-form surface mirror 3.The present invention has enough light intensities, and resolution is high, colour gamut is wide.The emergent light of laser light source module 1 is incident to laser scanning module 2, is incident on free-form surface mirror 3 after the outgoing of the most scanned module 2, reflexes on screen 4 through free-form surface mirror 3, it is achieved projection.
Laser light source module 1 includes red light-emitting element 11, blue light emitting element 12, green luminescence element 13, laser light source module 1 also includes trichroism Multiplexing apparatus 14, red light-emitting element 11, blue light emitting element 12, green luminescence element 13 light emission direction towards trichroism Multiplexing apparatus 14, the emergent light being laser light source module 1 with the emergent light of trichroism Multiplexing apparatus 14.Realize photosynthetic effect.
Trichroism Multiplexing apparatus is trichroism conjunction light eyeglass.The present invention realizes photosynthetic effect by choosing trichroism conjunction light eyeglass, has saved the area of device.
Scan module 2 is the scan module 2 of a reflective deflection；Vertically upward, the emergent light of scan module 2 is positioned at the rear of scan module 2 towards the reflecting surface of free-form surface mirror 3, free-form surface mirror 3 to the light emission direction of laser light source module 1.The size of saver.
Scan module 2 includes a MEMS, reflection unit, and MEMS includes that two mutually perpendicular rotating shafts, two rotating shafts are all connected with a reflection unit；The light that laser light source module 1 sends is projected to the intersection point of two rotating shafts, and the reflecting surface of light orienting reflex device that laser light source module 1 sends.Facilitate implementation laser light source module 1 to be reflected device and reflect.
Scan module 2 also includes that deflection coil and magnet system, deflection coil and magnet system produce magnetically-actuated rotating shaft and rotate.Realize two orthogonal rotating shafts to rotate, it is achieved reflection unit realizes the different deflection to light.Magnet system includes at least two Magnet, and Magnet is all wound with deflection coil.
MEMS includes micro motor, and micro motor drives two rotating shafts.Combination by MEMS Yu magnetic force, it is achieved the adjustment of rotating shaft rotational case,
Two orthogonal rotating shafts are fixed and are connected and composed cross matrix, and reflection unit is connected with cross matrix.It is equipped with magnetisable material in two rotating shafts.Magnetisable material line centered by the central axis of rotating shaft is the most angularly arranged on the outer wall of rotating shaft.Facilitate implementation deflection coil and produce magnetic force with magnet system, be respectively acting on two rotating shafts, two rotating shafts are realized different rotations.
Being equipped with angular transducer in two rotating shafts, angular transducer is a wireless senser, wireless senser and microprocessor system wireless connections, and microprocessor system connects deflection coil.Facilitate implementation detection and the adjustment in real time of axis of rotation situation.
Free-form surface mirror 3 has 4 kinds of modes:
Seeing Fig. 2, be embodied as 1, each frame light beam of scan module 2 outgoing is symmetrical about horizontal line, and free-form surface mirror 3 is the concave mirror of indent.Concave mirror is centrally located on horizontal line.
Seeing Fig. 3, be embodied as 2, each frame light beam of scan module 2 outgoing is symmetrical about horizontal line, and free-form surface mirror 3 is the convex reflecting mirror of evagination.Convex reflecting mirror is centrally located on horizontal line.
Seeing Fig. 4, be embodied as 3, each frame light beam of scan module 2 outgoing is respectively positioned on horizontal top, and free-form surface mirror 3 is the concave mirror of indent.Concave mirror also is located at horizontal top.
Seeing Fig. 5, be embodied as 4, each frame light beam of scan module 2 outgoing is symmetrical about horizontal line, and free-form surface mirror 3 is the convex reflecting mirror of evagination.Convex reflecting mirror also is located at horizontal top.
Scan module uses scan mode the most in the same direction, and after each two field picture of scan module terminates, the original projection point of next frame image is identical with the original projection of previous frame image point.It is easy to ensure the quality of projection image.
The reflecting surface of free-form surface mirror can be XY multinomial face.XY multinomial face is a series of multinomials based on conical surface constant compositions, and multinomial can be launched into xmyn, wherein (m+n)≤10,
Wherein c is radius of curvature, and k is quadratic surface coefficient, CjFor xmynCoefficient.
Free-form surface mirror includes a matrix, and matrix is acrylic or glass is made, and the side of matrix is provided with a reflective membrane；Matrix is provided with a cooling medium, and cooling medium is positioned at the junction of matrix and reflective membrane.The present invention is by being provided with cooling medium on free-form surface mirror, it is achieved the effect of cooling, it is ensured that the temperature of the reflecting surface of free-form surface mirror, it is ensured that the quality of reflection light.
The ultimate principle of the present invention and principal character and advantages of the present invention have more than been shown and described.Skilled person will appreciate that of the industry; the present invention is not restricted to the described embodiments; the principle that the present invention is simply described described in above-described embodiment and description; without departing from the spirit and scope of the present invention; the present invention also has various changes and modifications, and these changes and improvements both fall within scope of the claimed invention.Claimed scope is defined by appending claims and equivalent thereof.
Claims (10)
1. curved face reflecting type ultrashort out-of-focus projection based on a mems camera lens, including a short out-of-focus projection lens bodies, it is characterised in that described short out-of-focus projection lens bodies includes a laser light source module, one scan module, a free-form surface mirror；
The light that described laser light source module sends approach scan module, free-form surface mirror successively.
A kind of ultrashort out-of-focus projection of curved face reflecting type based on mems the most according to claim 1 camera lens, it is characterized in that: described laser light source module includes red light-emitting element, blue light emitting element, green luminescence element, described laser light source module also includes trichroism Multiplexing apparatus, described red light-emitting element, described blue light emitting element, described green luminescence element light emission direction towards described trichroism Multiplexing apparatus, with the emergent light that emergent light is described laser light source module of described trichroism Multiplexing apparatus.
A kind of ultrashort out-of-focus projection of curved face reflecting type based on mems the most according to claim 1 camera lens, it is characterized in that: the light emission direction of described laser light source module is vertically upward, the emergent light of described scan module is positioned at the rear of described scan module towards the reflecting surface of described free-form surface mirror, described free-form surface mirror.
A kind of ultrashort out-of-focus projection of curved face reflecting type based on mems the most according to claim 1 camera lens, it is characterized in that: described scan module includes a MEMS, reflection unit, described MEMS includes that two mutually perpendicular rotating shafts, two described rotating shafts are all connected with a reflection unit；
The light that described laser light source module sends is projected to the intersection point of two described rotating shafts, and the light that sends of described laser light source module is towards the reflecting surface of described reflection unit.
A kind of ultrashort out-of-focus projection of curved face reflecting type based on mems the most according to claim 4 camera lens, it is characterised in that: described scan module also includes that deflection coil and magnet system, described deflection coil and magnet system produce rotating shaft described in magnetically-actuated and rotate.
A kind of ultrashort out-of-focus projection of curved face reflecting type based on mems the most according to claim 5 camera lens, it is characterized in that: in two described rotating shafts, be equipped with angular transducer, described angular transducer is a wireless senser, described wireless senser and microprocessor system wireless connections, described microprocessor system connects described deflection coil.
A kind of ultrashort out-of-focus projection of curved face reflecting type based on mems the most according to claim 1 camera lens, it is characterized in that: each frame light beam of described scan module outgoing is symmetrical about horizontal line, described free-form surface mirror is the concave mirror of indent, and described concave mirror is centrally located on described horizontal line.
A kind of ultrashort out-of-focus projection of curved face reflecting type based on mems the most according to claim 1 camera lens, it is characterized in that: each frame light beam of described scan module outgoing is symmetrical about horizontal line, described free-form surface mirror is the convex reflecting mirror of evagination, and described convex reflecting mirror is centrally located on described horizontal line.
A kind of ultrashort out-of-focus projection of curved face reflecting type based on mems the most according to claim 1 camera lens, it is characterized in that: each frame light beam of described scan module outgoing is respectively positioned on horizontal top, described free-form surface mirror is the concave mirror of indent, and described concave mirror also is located at described horizontal top.
A kind of ultrashort out-of-focus projection of curved face reflecting type based on mems the most according to claim 1 camera lens, it is characterized in that: each frame light beam of described scan module outgoing is symmetrical about horizontal line, described free-form surface mirror is the convex reflecting mirror of evagination, and described convex reflecting mirror also is located at described horizontal top.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610119047.9A CN105824176B (en) | 2016-03-02 | 2016-03-02 | A kind of ultrashort out-of-focus projection's camera lens of curved face reflecting type based on mems |
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|---|---|---|---|
| CN201610119047.9A CN105824176B (en) | 2016-03-02 | 2016-03-02 | A kind of ultrashort out-of-focus projection's camera lens of curved face reflecting type based on mems |
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| CN105824176A true CN105824176A (en) | 2016-08-03 |
| CN105824176B CN105824176B (en) | 2018-04-27 |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109946910A (en) * | 2017-12-21 | 2019-06-28 | 宁波舜宇车载光学技术有限公司 | Vehicle-mounted optical projection system |
| CN109950793A (en) * | 2019-05-10 | 2019-06-28 | 苏州长光华芯半导体激光创新研究院有限公司 | VCSEL array light source system based on MEMS micromirror scanning |
| CN109980502A (en) * | 2019-05-10 | 2019-07-05 | 苏州长光华芯半导体激光创新研究院有限公司 | VCSEL single-shot luminous point light-source system based on MEMS micromirror scanning |
| CN111796350A (en) * | 2020-07-09 | 2020-10-20 | 欧菲微电子技术有限公司 | Reflective collimating mirror, laser module, camera and electronic equipment |
| CN113433528A (en) * | 2021-07-19 | 2021-09-24 | 雷神等离子科技(杭州)有限公司 | Vertical diffusion type single-beam omnibearing laser radar |
| CN113485063A (en) * | 2021-06-29 | 2021-10-08 | 歌尔股份有限公司 | Optical machine optical path system and control method thereof |
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| CN113433528A (en) * | 2021-07-19 | 2021-09-24 | 雷神等离子科技(杭州)有限公司 | Vertical diffusion type single-beam omnibearing laser radar |
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| CN105824176B (en) | 2018-04-27 |
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