CN105824176B - A kind of ultrashort out-of-focus projection's camera lens of curved face reflecting type based on mems - Google Patents
A kind of ultrashort out-of-focus projection's camera lens of curved face reflecting type based on mems Download PDFInfo
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- CN105824176B CN105824176B CN201610119047.9A CN201610119047A CN105824176B CN 105824176 B CN105824176 B CN 105824176B CN 201610119047 A CN201610119047 A CN 201610119047A CN 105824176 B CN105824176 B CN 105824176B
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Classifications
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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
Abstract
The present invention relates to optical field.A kind of ultrashort out-of-focus projection's camera lens of curved face reflecting type based on mems, including a short focus projection lens main body, short focus projection lens main body include a laser light source module, one scan module, a free-form surface mirror；The light that laser light source module is sent approach scan module, free-form surface mirror successively.The present invention has enough luminous intensities, and high resolution, colour gamut are wide.The emergent light of laser light source module is incident to laser scanning module, is then incident to after scanned module outgoing on free-form surface mirror, is reflexed to through free-form surface mirror on screen, realize projection.
Description
Technical field
The present invention relates to optical field, and in particular to ultrashort out-of-focus projection's device.
Background technology
In recent years, short focus projector is increasingly becoming the hot spot of domestic projector's visual field.Short focus projector adjust the distance require it is small,
Tens centimetres of projector distance is often only needed, just can be projected out big picture.Have compared to Conventional projection machine and more save sky
Between, the advantage such as easy for installation.But the design difficulty of short focus projector comes not only from the picture for how realizing shorter focal length bigger
Face, while high resolution is also required, colour gamut is wide, and luminous intensity is enough etc..Existing short focus projector can not meet above-mentioned need at the same time
Ask.
The content of the invention
It is above-mentioned to solve it is an object of the invention to provide a kind of ultrashort out-of-focus projection's camera lens of curved face reflecting type based on mems
Technical problem.
Technical problem solved by the invention can be realized using following technical scheme：
A kind of ultrashort out-of-focus projection's camera lens of curved face reflecting type based on mems, including a short focus projection lens main body, its feature
It is, the short focus projection lens main body includes a laser light source module, one scan module, a free-form surface mirror；
The light that the laser light source module is sent approach scan module, free-form surface mirror successively.
The present invention has enough luminous intensities, and high resolution, colour gamut are wide.The emergent light of laser light source module is incident to laser
Scan module, is then incident on free-form surface mirror after scanned module outgoing, screen is reflexed to through free-form surface mirror
On curtain, projection is realized.
The laser light source module includes red light-emitting element, blue light emitting element, green luminescence element, the laser light
Source module further includes three color Multiplexing apparatus, the red light-emitting element, the blue light emitting element, the green luminescence element
Light emission direction is towards the three colors Multiplexing apparatus, using emergent light the going out as the laser light source module of the three colors Multiplexing apparatus
Penetrate light.
Realize photosynthetic effect.
The three colors Multiplexing apparatus is three color closing light eyeglasses.The present invention is realized photosynthetic by three color closing light eyeglasses of selection
Effect, has saved the area of device.
The scan module is the scan module of a reflective deflection；
Vertically upward, the emergent light of the scan module is bent towards the freedom for the light emission direction of the laser light source module
The reflecting surface of face speculum, the free-form surface mirror are located at the rear of the scan module.
Save the size of device.
The scan module includes a MEMS, reflection unit, and the MEMS is orthogonal including two
Shaft, two shafts are connected with a reflection unit；
The light that the laser light source module is sent is projected to the intersection point of two shafts, and the laser light source module
Reflecting surface of the light sent towards the reflection unit.
Laser light source module is easy to implement to reflect through reflection unit.
Two orthogonal shafts, which are fixedly connected, forms cross mold base, the reflection unit and the cross mold base
It is detachably connected.It is conveniently replaceable reflection unit.
The scan module further includes deflection coil and magnet system, and the deflection coil produces magnetic force with magnet system and drives
The shaft is moved to rotate.
Realize that two orthogonal shafts rotate, realize that reflection unit realizes the different deflections to light.
Angular transducer is equipped with two shafts, the angular transducer is a wireless senser, described wireless
Sensor and a microprocessor system wireless connection, the microprocessor system connect the deflection coil.
It is easy to implement the detection and adjustment in real time of shaft rotation situation.
Each frame light beam of the scan module outgoing is symmetrical on horizontal line, and the free-form surface mirror is indent
Concave mirror.The center of the concave mirror is located on the horizontal line.
Each frame light beam of the scan module outgoing is symmetrical on horizontal line, and the free-form surface mirror is evagination
Convex reflecting mirror.The center of the convex reflecting mirror is located on the horizontal line.
Each frame light beam of the scan module outgoing is respectively positioned on horizontal top, and the free-form surface mirror is interior
Recessed concave mirror.The concave mirror also is located at the horizontal top.
Each frame light beam of the scan module outgoing is symmetrical on horizontal line, and the free-form surface mirror is evagination
Convex reflecting mirror.The convex reflecting mirror also is located at the horizontal top.
The scan module is using scan mode in the same direction line by line, after each two field picture of scan module, next frame
The original projection point of image is identical with the original projection point of previous frame image.
Easy to ensure the quality of projection image.
The reflecting surface of the free-form surface mirror can be an XY multinomials face.XY multinomials face is to be based on conical surface
A series of multinomials composition of constant, multinomial can be launched into xmyn, wherein (m+n)≤10,
Wherein c is radius of curvature, and k is quadratic surface coefficient, CjFor xmynCoefficient.
The free-form surface mirror includes a matrix, and described matrix is made of acrylic or glass, described matrix
Side is equipped with a reflective membrane；
Described matrix is equipped with a cooling medium, and the cooling medium is located at the connection of described matrix and the reflective membrane
Place.
The present invention realizes the effect of cooling, ensures free form surface by being equipped with cooling medium on free-form surface mirror
The temperature of the reflecting surface of speculum, ensures the quality of reflection light.
Brief description of the drawings
Fig. 1 is a kind of light path schematic diagram of the present invention；
Fig. 2 is the part light path schematic diagram of present invention specific implementation 1；
Fig. 3 is the part light path schematic diagram of present invention specific implementation 2；
Fig. 4 is the part light path schematic diagram of present invention specific implementation 3；
Fig. 5 is the part light path schematic diagram of present invention specific implementation 4.
Embodiment
In order to make the technical means, the creative features, the aims and the efficiencies achieved by the present invention easy to understand, tie below
Conjunction is specifically illustrating that the present invention is further explained.
Referring to Fig. 1, Fig. 2, Fig. 3, Fig. 4, Fig. 5, a kind of ultrashort out-of-focus projection's camera lens of curved face reflecting type based on mems, including one
Short focus projection lens main body, it is anti-that short focus projection lens main body includes a laser light source module 1, one scan module 2, a free form surface
Penetrate mirror 3；The light that laser light source module 1 is sent approach scan module 2, free-form surface mirror 3 successively.The present invention has enough
Luminous intensity, high resolution, colour gamut are wide.The emergent light of laser light source module 1 is incident to laser scanning module 2, then scanned
Module 2 is incident on free-form surface mirror 3 after being emitted, and is reflexed to through free-form surface mirror 3 on screen 4, realizes 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 further includes three color Multiplexing apparatus 14, red light-emitting element 11, blue light emitting element 12, the hair of green luminescence element 13
Light direction is towards three color Multiplexing apparatus 14, the emergent light using the emergent light of three color Multiplexing apparatus 14 as laser light source module 1.Realize
Photosynthetic effect.
Three color Multiplexing apparatus are three color closing light eyeglasses.The present invention realizes photosynthetic effect by choosing three color closing light eyeglasses
Fruit, has saved the area of device.
Scan module 2 is the scan module 2 of a reflective deflection；The light emission direction of laser light source module 1 vertically upward, is swept
The emergent light of module 2 is retouched towards the reflecting surface of free-form surface mirror 3, after free-form surface mirror 3 is located at scan module 2
Side.Save the size of device.
Scan module 2 includes a MEMS, reflection unit, and MEMS includes two mutually perpendicular shafts,
Two shafts are connected with a reflection unit；The light that laser light source module 1 is sent is projected to the intersection point of two shafts, and laser
Reflecting surface of the light that light source module 1 is sent towards reflection unit.Laser light source module 1 is easy to implement to reflect through reflection unit
Go out.
Scan module 2 further includes deflection coil and magnet system, and deflection coil produces magnetic drive shaft with magnet system
Rotate.Realize that two orthogonal shafts rotate, realize that reflection unit realizes the different deflections to light.Magnetic
Iron system includes at least two magnet, and deflection coil is wound with magnet.
MEMS includes micro motor, and micro motor drives two shafts.It is real by the combination of MEMS and magnetic force
The adjustment of existing shaft rotational case,
Two orthogonal shafts, which are fixedly connected, forms cross mold base, and reflection unit is connected with cross mold base.Two
Magnetisable material is equipped with a shaft.Magnetisable material line centered on the central axis of shaft is annularly angularly arranged in shaft
Outer wall on.It is easy to implement deflection coil and produces magnetic force with magnet system, two shafts is respectively acting on, to the reality of two shafts
Existing different rotation.
Angular transducer is equipped with two shafts, angular transducer is a wireless senser, and wireless senser is micro- with one
Type processor system wireless connection, microprocessor system connection deflection coil.Be easy to implement the detection of shaft rotation situation with
Adjustment in real time.
Free-form surface mirror 3 has 4 kinds of modes：
Referring to Fig. 2, specific implementation 1, each frame light beam that scan module 2 is emitted is symmetrical on horizontal line, and free form surface is anti-
Penetrate the concave mirror that mirror 3 is indent.The center of concave mirror is located on horizontal line.
Referring to Fig. 3, specific implementation 2, each frame light beam that scan module 2 is emitted is symmetrical on horizontal line, and free form surface is anti-
Penetrate the convex reflecting mirror that mirror 3 is evagination.The center of convex reflecting mirror is located on horizontal line.
Referring to Fig. 4, specific implementation 3, each frame light beam that scan module 2 is emitted is respectively positioned on horizontal top, freely bent
Face speculum 3 is the concave mirror of indent.Concave mirror also is located at horizontal top.
Referring to Fig. 5, specific implementation 4, each frame light beam that scan module 2 is emitted is symmetrical on horizontal line, and free form surface is anti-
Penetrate the convex reflecting mirror that mirror 3 is evagination.Convex reflecting mirror also is located at horizontal top.
Scan module is using scan mode in the same direction line by line, after each two field picture of scan module, next two field picture just
Beginning, incident point was identical with the original projection point of previous frame image.Easy to ensure the quality of projection image.
The reflecting surface of free-form surface mirror can be XY multinomials face.XY multinomials face is based on conical surface constant
A series of multinomial compositions, 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 made of acrylic or glass, and the side of matrix is anti-equipped with one
Light film；Matrix is equipped with a cooling medium, and cooling medium is located at the junction of matrix and reflective membrane.The present invention is by free song
Face speculum is equipped with cooling medium, realizes the effect of cooling, ensures the temperature of the reflecting surface of free-form surface mirror, ensures anti-
Penetrate the quality of light.
The basic principle and main feature and advantages of the present invention of the present invention has been shown and described above.The skill of the industry
Art personnel it should be appreciated that the present invention is not limited to the above embodiments, the above embodiments and description only describe
The principle of the present invention, without departing from the spirit and scope of the present invention, various changes and modifications of the present invention are possible, these
Changes and improvements all fall within the protetion scope of the claimed invention.The claimed scope of the invention by appended claims and
Its equivalent thereof.
Claims (8)
1. a kind of ultrashort out-of-focus projection's camera lens of curved face reflecting type based on mems, including a short focus projection lens main body, its feature exist
In the short focus projection lens main body includes a laser light source module, one scan module, a free-form surface mirror；
The light that the laser light source module is sent approach scan module, free-form surface mirror successively；
Free-form surface mirror includes a matrix, and matrix is made of acrylic or glass, and the side of matrix is equipped with a reflective membrane；
Matrix is equipped with a cooling medium, and cooling medium is located at the junction of matrix and reflective membrane；
The scan module includes a MEMS, reflection unit, and the MEMS includes two mutually perpendicular turn
Axis, two shafts are connected with a reflection unit；
The light that the laser light source module is sent is projected to the intersection point of two shafts, and the laser light source module is sent
Light towards the reflection unit reflecting surface；
The scan module further includes deflection coil and magnet system, and the deflection coil produces magnetic drive institute with magnet system
Shaft is stated to rotate；
MEMS includes micro motor, and micro motor drives two shafts, by the combination of MEMS and magnetic force, realizes and turns
The adjustment of axis rotational case；
The reflecting surface of free-form surface mirror is XY multinomials face；XY multinomials face is based on a series of more of conical surface constant
Formula composition, polynomial expansion is into xmyn, wherein m+n≤10,
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<msqrt>
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<mn>1</mn>
<mo>-</mo>
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<mo>(</mo>
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<mo>+</mo>
<mi>k</mi>
<mo>)</mo>
</mrow>
<msup>
<mi>c</mi>
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</msup>
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<mi>r</mi>
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</msup>
</mrow>
</msqrt>
</mrow>
</mfrac>
<mo>+</mo>
<munderover>
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</mrow>
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</munderover>
<msub>
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<mo>;</mo>
</mrow>
Wherein c is radius of curvature, and k is quadratic surface coefficient, CjFor xmynCoefficient；
The scan module is using scan mode in the same direction line by line, after each two field picture of scan module, next two field picture
Original projection point it is identical with the original projection point of previous frame image.
A kind of 2. ultrashort out-of-focus projection's camera lens of curved face reflecting type based on mems according to claim 1, it is characterised in that：Institute
Stating laser light source module includes red light-emitting element, blue light emitting element, green luminescence element, and the laser light source module also wraps
Include three color Multiplexing apparatus, the red light-emitting element, the blue light emitting element, the light emission direction court of the green luminescence element
To the three colors Multiplexing apparatus, the emergent light using the emergent light of the three colors Multiplexing apparatus as the laser light source module.
A kind of 3. ultrashort out-of-focus projection's camera lens of curved face reflecting type based on mems according to claim 1, it is characterised in that：Institute
State the light emission direction of laser light source module vertically upward, the emergent light of the scan module is towards the free-form surface mirror
Reflecting surface, the free-form surface mirror are located at the rear of the scan module.
A kind of 4. ultrashort out-of-focus projection's camera lens of curved face reflecting type based on mems according to claim 1, it is characterised in that：Two
It is equipped with angular transducer in a shaft, the angular transducer is a wireless senser, the wireless senser and one
Microprocessor system wireless connection, the microprocessor system connect the deflection coil.
A kind of 5. ultrashort out-of-focus projection's camera lens of curved face reflecting type based on mems according to claim 1, it is characterised in that：Institute
It is symmetrical on horizontal line to state each frame light beam of scan module outgoing, the free-form surface mirror is the concave reflection of indent
Mirror, the center of the concave mirror are located on the horizontal line.
A kind of 6. ultrashort out-of-focus projection's camera lens of curved face reflecting type based on mems according to claim 1, it is characterised in that：Institute
It is symmetrical on horizontal line to state each frame light beam of scan module outgoing, the free-form surface mirror is the convex refractive of evagination
Mirror, the center of the convex reflecting mirror are located on the horizontal line.
A kind of 7. ultrashort out-of-focus projection's camera lens of curved face reflecting type based on mems according to claim 1, it is characterised in that：Institute
The each frame light beam for stating scan module outgoing is respectively positioned on horizontal top, and the free-form surface mirror is anti-for the concave surface of indent
Mirror is penetrated, the concave mirror also is located at the horizontal top.
A kind of 8. ultrashort out-of-focus projection's camera lens of curved face reflecting type based on mems according to claim 1, it is characterised in that：Institute
It is symmetrical on horizontal line to state each frame light beam of scan module outgoing, the free-form surface mirror is the convex refractive of evagination
Mirror, the convex reflecting mirror also are located at the horizontal top.
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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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|---|---|---|---|
| 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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| CN105824176B true CN105824176B (en) | 2018-04-27 |
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Families Citing this family (6)
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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 |
| 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 |
| 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 |
| 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 |
| 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 |
| CN113433528B (en) * | 2021-07-19 | 2022-06-24 | 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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| Publication number | Priority date | Publication date | Assignee | Title |
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| US7677736B2 (en) * | 2004-02-27 | 2010-03-16 | Panasonic Corporation | Illumination light source and two-dimensional image display using same |
| CN102096295B (en) * | 2009-12-09 | 2013-05-22 | 宏瞻科技股份有限公司 | Laser projection system |
| JP5446450B2 (en) * | 2009-05-20 | 2014-03-19 | 船井電機株式会社 | Laser projector |
| US8891147B2 (en) * | 2011-05-27 | 2014-11-18 | Hitachi-Lg Data Storage, Inc. | Optical beam scanning device and image display device using the same |
| CN104570332B (en) * | 2013-10-14 | 2017-01-18 | 中国科学院苏州纳米技术与纳米仿生研究所 | Magnetic field system of MEMS scanning galvanometer |
| CN104765144B (en) * | 2015-03-20 | 2017-01-25 | 西北工业大学 | Electromagnetism-static electricity hybrid driven two-dimensional micro scanning mirror and manufacturing method |
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