CN105068363A - Desktop ultra-short-focus optical module - Google Patents
Desktop ultra-short-focus optical module Download PDFInfo
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- CN105068363A CN105068363A CN201510585304.3A CN201510585304A CN105068363A CN 105068363 A CN105068363 A CN 105068363A CN 201510585304 A CN201510585304 A CN 201510585304A CN 105068363 A CN105068363 A CN 105068363A
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Abstract
The invention discloses a desktop ultra-short-focus optical module, which belongs to the field of optical systems. The desktop ultra-short-focus optical module is used for imaging a first image projected and displayed by a projector ray machine into an amplified second image, and comprises the projector ray machine, a condensing lens, an aspherical lens, a free curved-surface lens and a free curved-surface reflector which are arranged along an optical path in a tandem manner, wherein the free curved-surface lens is composed of a convex lens and a concavo-vonvex lens. The desktop ultra-short-focus optical module provided by the invention corrects spherical aberration in a collimation and focusing system caused by the condensing lens through the aspherical lens, increases the optical path through the free curved-surface reflector and achieves short-focus projection. Moreover, the desktop ultra-short-focus optical module greatly shortens the projection distance through the ultra-short-focus technology, the projection ratio of the desktop ultra-short-focus optical module ranges from 0.1 to 0.18, and the offset of the first image relative to a main optical axis is greater than 120%.
Description
Technical field
The invention belongs to field of optical systems, particularly relate to the ultrashort burnt optics module of a kind of desktop.
Background technology
Ultrashort burnt optics module can shorten the projector distance of projector effectively, is the important solution route of short distance projection large scale picture on the market at present.
The design shortening projection lens focal length there are three kinds of modes: refraction type, reflective and hybrid.The camera lens of refraction type design is all made up of lens, and comprise spherical lens or non-spherical lens, because the quantity of its lenses of camera lens of this design is larger and of a great variety, therefore structure is often more complicated, is unfavorable for manufacturing.The camera lens of reflective designs is all made up of catoptron, comprise sphere or aspheric catoptron, catoptron can be convex surface, concave surface or plane mirror, but the difficulty of the processing of non-spherical reflector and detection is comparatively large, and the catoptron of multi-disc increases cost and the manufacture difficulty of camera lens undoubtedly.The camera lens of hybrid design combines refraction type and reflective technical characterstic, have employed the design that lens and catoptron combine, and is the mainstream scheme of ultrashort out-of-focus projection camera lens on the market at present.
Also the structure of a variety of hybrid design concept based on first reflecting back reflection is had to be suggested at present.Based on the camera lens of hybrid design concept or the system that first reflect back reflection, but owing to needing to project larger-size picture in shorter distance, require that low projection is compared, to such an extent as to can spherical aberration etc. be there is in the image projected, the depth of field and image planes brightness are all difficult to control, and the picture quality of gained is not high.
Summary of the invention
The object of the invention is to overcome the shortcoming that exists in above-mentioned prior art with not enough, provide a kind of desktop ultrashort burnt optics module, the ultrashort burnt optics module of desktop of the present invention can to project large image in short distance, and improves image quality.
The present invention is achieved through the following technical solutions: the ultrashort burnt optics module of a kind of desktop, for the first image of projector ray machine projection display being imaged as the second image of amplification, the ultrashort burnt optics module of described desktop comprises along the tandem projector ray machine of light path, collector lens, aspheric lens, free form surface camera lens and free-form surface mirror, and described free form surface camera lens is made up of convex lens and concave-convex lens.
The ultrashort burnt optics module of described desktop, also comprises projection display screen, and described projection display screen is for being received from by the second image of the amplification of curved reflector.
The spherical aberration that described aspheric lens brings in collimation and focusing system for revising collector lens, by adjustment curved surface constant and asphericity coefficient, non-spherical lens can eliminate spherical aberration to greatest extent, makes imaging clearly, thus improves image quality.
Described free-form surface mirror is the concave mirror of free form surface.Described free-form surface mirror can reduce anamorphose, improves quality.The concave mirror of described free form surface has more degree of freedom, and its smooth surface has matter, can reduce light loss and picture distortion, make the brightness of image of reflection high and indeformable, thus greatly improve the picture element of optical system.
Described projector ray machine is micro projector ray machine.
Described projector ray machine is laser-projector ray machine.
The projection ratio of the ultrashort burnt optics module of desktop of the present invention is 0.1 ~ 0.18, and described first image is greater than 120% relative to the side-play amount of primary optical axis.
Compared with prior art, the present invention has following advantage and effect:
The ultrashort burnt optics module of desktop of the present invention have modified collector lens 2 in the spherical aberration collimated and bring in focusing system by aspheric lens 3; And add light path by free-form surface mirror 5, achieve short out-of-focus projection, and there is lower transmittance, achieve short distance and to project large image, and image quality is high.And the ultrashort burnt optics module of desktop of the present invention, by above-mentioned ultrashort burnt technology, is significantly shortened projector distance, the projection ratio of the ultrashort burnt optics module of described desktop is 0.1 ~ 0.18, and described first image is greater than 120% relative to the side-play amount of primary optical axis.
Accompanying drawing explanation
Fig. 1 is the structural representation of the present invention ultrashort out-of-focus projection camera lens first embodiment.
Wherein: 1 projector ray machine, 2 collector lenses, 3 aspheric lenses, 4 free form surface camera lenses, 5 free-form surface mirrors, 6 projection display screen.
Embodiment
Below in conjunction with embodiment and accompanying drawing, the present invention is described in further detail, but embodiments of the present invention are not limited thereto.
Embodiment 1
As shown in Figure 1, the invention provides the ultrashort burnt optics module of a kind of desktop, the first image for projector ray machine 1 being projected display is imaged as the second image of amplification, the ultrashort burnt optics module of described desktop comprises along the tandem projector ray machine 1 of light path, collector lens 2, aspheric lens 3, free form surface camera lens 4 and free-form surface mirror 5, and described free form surface camera lens 4 is made up of convex lens and concave-convex lens.
The ultrashort burnt optics module of described desktop, also comprises projection display screen 6, and described projection display screen 6 is for receiving the second image of the amplification of free-form surface mirror 5 reflection.
The spherical aberration that described aspheric lens 3 brings in collimation and focusing system for revising collector lens 2, by adjustment curved surface constant and asphericity coefficient, non-spherical lens can eliminate spherical aberration to greatest extent, makes imaging clearly, thus improves image quality.
Described free-form surface mirror 5 is the concave mirror of free form surface.Described free-form surface mirror 5 can reduce anamorphose, improves quality.The concave mirror of described free form surface has more degree of freedom, and its smooth surface has matter, can reduce light loss and picture distortion, make the brightness of image of reflection high and indeformable, thus greatly improve the picture element of optical system.
Described projector ray machine 1 is micro projector ray machine.
The projection ratio of the ultrashort burnt optics module of desktop of the present invention is 0.1 ~ 0.18, and described first image is greater than 120% relative to the side-play amount of primary optical axis.
The ultrashort burnt optics module of desktop of the present invention have modified collector lens 2 in the spherical aberration collimated and bring in focusing system by aspheric lens 3; And add light path by free-form surface mirror 5, achieve short out-of-focus projection, and there is lower transmittance, achieve short distance and to project large image, and image quality is high.And the projection ratio of the ultrashort burnt optics module of desktop of the present invention is 0.1 ~ 0.18, and described first image is greater than 120% relative to the side-play amount of primary optical axis.
Above-described embodiment is the present invention's preferably embodiment; but embodiments of the present invention are not restricted to the described embodiments; change, the modification done under other any does not deviate from Spirit Essence of the present invention and principle, substitute, combine, simplify; all should be the substitute mode of equivalence, be included within protection scope of the present invention.
Claims (5)
1. the ultrashort burnt optics module of desktop, for the first image of projector ray machine projection display being imaged as the second image of amplification, it is characterized in that: comprise along the tandem projector ray machine of light path, collector lens, aspheric lens, free form surface camera lens and free-form surface mirror, described free form surface camera lens is made up of convex lens and concave-convex lens.
2. the ultrashort burnt optics module of desktop according to claim 1, is characterized in that: also comprise projection display screen, and described projection display screen is for being received from by the second image of the amplification of curved reflector.
3. the ultrashort burnt optics module of desktop according to claim 1, is characterized in that: described free-form surface mirror is the concave mirror of free form surface.
4. the ultrashort burnt optics module of desktop according to claim 1, is characterized in that: described projector ray machine is micro projector ray machine.
5. the ultrashort burnt optics module of desktop according to claim 1, is characterized in that: described projector ray machine is laser-projector ray machine.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510585304.3A CN105068363A (en) | 2015-09-15 | 2015-09-15 | Desktop ultra-short-focus optical module |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510585304.3A CN105068363A (en) | 2015-09-15 | 2015-09-15 | Desktop ultra-short-focus optical module |
Publications (1)
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| CN105068363A true CN105068363A (en) | 2015-11-18 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201510585304.3A Pending CN105068363A (en) | 2015-09-15 | 2015-09-15 | Desktop ultra-short-focus optical module |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106527028A (en) * | 2016-11-17 | 2017-03-22 | 河南宏昌科技有限公司 | Vertical ultra-short focus projector |
| CN108463759A (en) * | 2016-01-19 | 2018-08-28 | 麦克赛尔株式会社 | projection-type image display device |
| CN109143531A (en) * | 2017-06-16 | 2019-01-04 | 昭朗精密工业有限公司 | Projector and its projection lens |
| US20190034035A1 (en) * | 2017-07-31 | 2019-01-31 | Samsung Electronics Co., Ltd. | Meta projector and electronic apparatus including the same |
| US20190057512A1 (en) * | 2017-07-31 | 2019-02-21 | Samsung Electronics Co., Ltd. | Meta projector and electronic apparatus including the same |
| CN109491060A (en) * | 2018-12-17 | 2019-03-19 | 浙江大学 | A kind of ultrashort focus objective lens for desktop projection |
| CN110275382A (en) * | 2019-07-29 | 2019-09-24 | 张羽 | One kind being applied to ultrashort out-of-focus projection's equipment rear-projection reflex reflector lens |
| CN112788167A (en) * | 2021-02-02 | 2021-05-11 | 惠州Tcl移动通信有限公司 | Mobile terminal with transparent screen |
| CN115755503A (en) * | 2022-11-22 | 2023-03-07 | 迪擎光电(台州)有限责任公司 | Digital projection lamp |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN108463759B (en) * | 2016-01-19 | 2020-12-25 | 麦克赛尔株式会社 | Projection type image display device |
| CN108463759A (en) * | 2016-01-19 | 2018-08-28 | 麦克赛尔株式会社 | projection-type image display device |
| CN106527028A (en) * | 2016-11-17 | 2017-03-22 | 河南宏昌科技有限公司 | Vertical ultra-short focus projector |
| CN109143531A (en) * | 2017-06-16 | 2019-01-04 | 昭朗精密工业有限公司 | Projector and its projection lens |
| US10922828B2 (en) * | 2017-07-31 | 2021-02-16 | Samsung Electronics Co., Ltd. | Meta projector and electronic apparatus including the same |
| US20190057512A1 (en) * | 2017-07-31 | 2019-02-21 | Samsung Electronics Co., Ltd. | Meta projector and electronic apparatus including the same |
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| US11042243B2 (en) * | 2017-07-31 | 2021-06-22 | Samsung Electronics Co., Ltd. | Meta projector and electronic apparatus including the same |
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| US11449178B2 (en) | 2017-07-31 | 2022-09-20 | Samsung Electronics Co., Ltd. | Meta projector and electronic apparatus including the same |
| CN109491060A (en) * | 2018-12-17 | 2019-03-19 | 浙江大学 | A kind of ultrashort focus objective lens for desktop projection |
| CN110275382A (en) * | 2019-07-29 | 2019-09-24 | 张羽 | One kind being applied to ultrashort out-of-focus projection's equipment rear-projection reflex reflector lens |
| CN112788167A (en) * | 2021-02-02 | 2021-05-11 | 惠州Tcl移动通信有限公司 | Mobile terminal with transparent screen |
| CN115755503A (en) * | 2022-11-22 | 2023-03-07 | 迪擎光电(台州)有限责任公司 | Digital projection lamp |
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Application publication date: 20151118 |
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