CN104656233A - Curved-surface reflection type ultra-short focal projection lens - Google Patents
Curved-surface reflection type ultra-short focal projection lens Download PDFInfo
- Publication number
- CN104656233A CN104656233A CN201310604016.9A CN201310604016A CN104656233A CN 104656233 A CN104656233 A CN 104656233A CN 201310604016 A CN201310604016 A CN 201310604016A CN 104656233 A CN104656233 A CN 104656233A
- Authority
- CN
- China
- Prior art keywords
- camera lens
- curved
- surface reflection
- focus
- reflection unit
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Classifications
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B13/00—Optical objectives specially designed for the purposes specified below
- G02B13/24—Optical objectives specially designed for the purposes specified below for reproducing or copying at short object distances
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B13/00—Optical objectives specially designed for the purposes specified below
- G02B13/001—Miniaturised objectives for electronic devices, e.g. portable telephones, webcams, PDAs, small digital cameras
- G02B13/0015—Miniaturised objectives for electronic devices, e.g. portable telephones, webcams, PDAs, small digital cameras characterised by the lens design
- G02B13/002—Miniaturised objectives for electronic devices, e.g. portable telephones, webcams, PDAs, small digital cameras characterised by the lens design having at least one aspherical surface
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B17/00—Systems with reflecting surfaces, with or without refracting elements
- G02B17/02—Catoptric systems, e.g. image erecting and reversing system
- G02B17/06—Catoptric systems, e.g. image erecting and reversing system using mirrors only, i.e. having only one curved mirror
- G02B17/0605—Catoptric systems, e.g. image erecting and reversing system using mirrors only, i.e. having only one curved mirror using two curved mirrors
- G02B17/0615—Catoptric systems, e.g. image erecting and reversing system using mirrors only, i.e. having only one curved mirror using two curved mirrors off-axis or unobscured systems in wich all of the mirrors share a common axis of rotational symmetry
-
- 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
Landscapes
- Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- General Physics & Mathematics (AREA)
- Lenses (AREA)
Abstract
The invention provides a curved-surface reflection type ultra-short focal projection lens. The curved-surface reflection type ultra-short focal projection lens comprises a rear lens set and a front lens set, wherein the front lens set comprises a curved-surface reflection unit. According to the curved-surface reflection type ultra-short focal projection lens, which is disclosed by the invention, the curved-surface reflection unit is arranged on a transmitting path of forward light rays of the front lens set and is used for reflecting light rays emitted by the rear lens set, so that the purpose of ultra-short focal projection is realized, and a field angle is increased.
Description
Technical field
The present invention relates to short out-of-focus projection technical field, espespecially a kind of curved face reflecting type ultrashort out-of-focus projection camera lens.
Background technology
As the branch of display technique, projection display technique, along with the progress of science and technology obtains develop rapidly.In recent years, short focus projector becomes the focus in domestic projector market gradually.Short focus projector is adjusted the distance and is required little, and often only need the projector distance of tens centimetres, just can project out large picture.The installation of short focus projector is also very convenient, only need be placed on projection screen front, and comparing Conventional projection facility has and more save space, the advantage such as easy for installation.Short focus projector is also therefore dark in development is subject to liking of users.The concept of " short Jiao " is noted by people, but short focus projector realize difficulty or sizable.The design difficulty of short focus projector not only comes from how under the prerequisite ensureing picture quality, to realize shorter focal length, also requires the design realizing larger off-axis camera lens while ensureing picture effect simultaneously.
At present, a kind of mode realizing short out-of-focus projection is reflective short out-of-focus projection.Reflective lens adopts reflective optical technology, and namely projector lens by image projecting on the mirror, then projected on projection screen by catoptron.Because projected image could arrive screen through reflection, image is easy on projection screen, cause image because of a bit small error of catoptron distortion and brightness disproportionation, and therefore the requirement of reflective short out-of-focus projection to the design of optical module and processing technology is relatively high.
For solving the problems of the technologies described above, the invention provides a kind of curved face reflecting type ultrashort out-of-focus projection camera lens.
Summary of the invention
The invention provides a kind of curved face reflecting type ultrashort out-of-focus projection camera lens, before its camera lens, group includes a camber reflection unit, thus the light path of light in projection lens increased, and then ultrashort out-of-focus projection can be realized, reduce the designing requirement of reflective short out-of-focus projection optical module.
For solving the problems of the technologies described above, technical scheme of the present invention is to provide a kind of curved face reflecting type ultrashort out-of-focus projection camera lens, comprising:
Organize after camera lens and group before camera lens, it is characterized in that: before described camera lens, group comprises a camber reflection unit.
Wherein, after described camera lens group by the different eyeglass of multi-disc form from axle short-focus lens.
Wherein, described camber reflection unit is a concave mirror, and described concave mirror has identical primary optical axis with group after camera lens.
Wherein, described camber reflection unit is a free-form surface mirror.
According to the description of above-mentioned any one to curved surface reflection type projection camera lens, described camber reflection unit comprises at least one curved-surface reflection side and at least one plane reflection face, and at least one curved-surface reflection side described and at least one plane reflection face are for increasing light path.
The invention has the beneficial effects as follows: the situation being different from prior art, curved face reflecting type provided by the invention ultrashort out-of-focus projection camera lens, on the forward direction light travel path organized before being arranged on camera lens by using camber reflection unit, described camber reflection unit is used for the light reflection organizing outgoing after camera lens to go out, thus realize the object of ultrashort out-of-focus projection, and add field angle.
Accompanying drawing explanation
Fig. 1 is the structural representation of an embodiment of curved face reflecting type of the present invention ultrashort out-of-focus projection camera lens.
Embodiment
Refer to Fig. 1, Fig. 1 is the structural representation of an embodiment of curved face reflecting type of the present invention ultrashort out-of-focus projection camera lens.As shown in Figure 1, organize 12 before group 11 and camera lens after the ultrashort out-of-focus projection of a kind of curved face reflecting type of the present invention camera lens comprises camera lens, wherein, before camera lens, group 12 comprises a camber reflection unit 121.
In a preferred embodiment of the invention, organize after camera lens 1 by multi-disc different eyeglass form from axle short-focus lens, such as, shown in Fig. 1, after camera lens group 1 by 13 pieces of eyeglasses form from axle short-focus lens.
In a preferred embodiment of the invention, camber reflection unit 12 comprises a concave mirror, described concave mirror with organize 11 after camera lens there is identical primary optical axis.Wherein, described concave mirror also can be able to be aspheric mirror for spherical mirror.In another preferred embodiment of the invention, camber reflection unit is a free-form surface mirror.
Organize 11 projects images after camera lens through secondary imaging, first time imaging image planes as shown in Figure 1.
In preferred version of the present invention, before camera lens, group 12 comprises curved surface or plane mirror further, and described curved surface or plane mirror, for increasing light path, realize ultrashort out-of-focus projection.Certainly, in embody rule of the present invention, the camber reflection unit 12 with at least one curved-surface reflection side and at least one plane reflection face can also be adopted, increase the light path of light in projection lens further, realize ultrashort out-of-focus projection.
According to aforesaid way, curved face reflecting type provided by the invention ultrashort out-of-focus projection camera lens, on the forward direction light travel path organized before being arranged on camera lens by using camber reflection unit, described camber reflection unit is used for the light reflection organizing outgoing after camera lens to go out, thus realize the object of ultrashort out-of-focus projection, and add field angle.
The foregoing is only embodiments of the invention; not thereby the scope of the claims of the present invention is limited; every utilize instructions of the present invention and accompanying drawing content to do equivalent structure or equivalent flow process conversion; or be directly or indirectly used in other relevant technical fields, be all in like manner included in scope of patent protection of the present invention.
Claims (5)
1. curved face reflecting type ultrashort out-of-focus projection camera lens is organized and a group before camera lens after comprising camera lens, it is characterized in that: before described camera lens, group comprises a camber reflection unit.
2. curved face reflecting type according to claim 1 ultrashort out-of-focus projection camera lens, is characterized in that, after described camera lens group by the different eyeglass of multi-disc form from axle short-focus lens.
3. curved face reflecting type according to claim 2 ultrashort out-of-focus projection camera lens, is characterized in that, described camber reflection unit is a concave mirror, and described concave mirror has identical primary optical axis with group after camera lens.
4. curved face reflecting type according to claim 2 ultrashort out-of-focus projection camera lens, is characterized in that, described camber reflection unit is a free-form surface mirror.
5. the ultrashort out-of-focus projection of the curved face reflecting type according to claim 1-4 any one camera lens, it is characterized in that, described camber reflection unit comprises at least one curved-surface reflection side and at least one plane reflection face, and at least one curved-surface reflection side described and at least one plane reflection face are for increasing light path.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310604016.9A CN104656233A (en) | 2013-11-25 | 2013-11-25 | Curved-surface reflection type ultra-short focal projection lens |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310604016.9A CN104656233A (en) | 2013-11-25 | 2013-11-25 | Curved-surface reflection type ultra-short focal projection lens |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104656233A true CN104656233A (en) | 2015-05-27 |
Family
ID=53247564
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310604016.9A Pending CN104656233A (en) | 2013-11-25 | 2013-11-25 | Curved-surface reflection type ultra-short focal projection lens |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104656233A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105068363A (en) * | 2015-09-15 | 2015-11-18 | 周光磊 | Desktop ultra-short-focus optical module |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101833166A (en) * | 2009-03-13 | 2010-09-15 | 扬明光学股份有限公司 | Lens barrel |
| CN102096295A (en) * | 2009-12-09 | 2011-06-15 | 宏瞻科技股份有限公司 | Laser projection system |
| CN102801985A (en) * | 2011-05-27 | 2012-11-28 | 日立视听媒体股份有限公司 | Optical beam scanning device and image display device using the same |
| CN103135238A (en) * | 2013-02-27 | 2013-06-05 | 中国科学院西安光学精密机械研究所 | Projection optical system |
| CN103777314A (en) * | 2012-10-25 | 2014-05-07 | 扬明光学股份有限公司 | Wide-angle projection lens |
| CN203745713U (en) * | 2013-11-25 | 2014-07-30 | 深圳市亿思达显示科技有限公司 | Curved-face reflecting ultra-short-focus projection lens |
-
2013
- 2013-11-25 CN CN201310604016.9A patent/CN104656233A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101833166A (en) * | 2009-03-13 | 2010-09-15 | 扬明光学股份有限公司 | Lens barrel |
| CN102096295A (en) * | 2009-12-09 | 2011-06-15 | 宏瞻科技股份有限公司 | Laser projection system |
| CN102801985A (en) * | 2011-05-27 | 2012-11-28 | 日立视听媒体股份有限公司 | Optical beam scanning device and image display device using the same |
| CN103777314A (en) * | 2012-10-25 | 2014-05-07 | 扬明光学股份有限公司 | Wide-angle projection lens |
| CN103135238A (en) * | 2013-02-27 | 2013-06-05 | 中国科学院西安光学精密机械研究所 | Projection optical system |
| CN203745713U (en) * | 2013-11-25 | 2014-07-30 | 深圳市亿思达显示科技有限公司 | Curved-face reflecting ultra-short-focus projection lens |
Non-Patent Citations (1)
| Title |
|---|
| 张剑平: "《校园多媒体设备使用与维护》", 31 October 2012 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105068363A (en) * | 2015-09-15 | 2015-11-18 | 周光磊 | Desktop ultra-short-focus optical module |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN203745713U (en) | Curved-face reflecting ultra-short-focus projection lens | |
| CN104570296B (en) | ultra-short focus projection lens | |
| CN105158884B (en) | A kind of ultrashort out-of-focus projection's lens system | |
| WO2015172537A1 (en) | Dlp micro projector | |
| CN110832377B (en) | Image display device and projection optical system | |
| CN109874302B (en) | Optical system, image magnifying device, virtual reality glasses and augmented reality glasses | |
| JP2015108797A (en) | Wide-angle projection optical system | |
| CN105068363A (en) | Desktop ultra-short-focus optical module | |
| CN105785557A (en) | Ultra-short-focus projection objective | |
| CN115047591A (en) | Projection lens and projection device | |
| CN104635322B (en) | Projection lens | |
| CN107015427A (en) | Projection arrangement and electronic equipment | |
| CN104570286A (en) | Micro fisheye camera lens and head-mounted display equipment | |
| CN104880898A (en) | DLP projector based on laser light source | |
| CN102289056B (en) | Front objective lens with large field of view and large relative aperture for imaging spectrograph | |
| TW201736938A (en) | Projector | |
| CN105759543A (en) | Projection optical system and projection device | |
| CN107490846A (en) | A kind of projection lens | |
| CN206270584U (en) | A reflective ultra-short-focus projection system | |
| CN105759405B (en) | Optical system capable of increasing field angle and projection lens | |
| CN208780896U (en) | A kind of spurious rays elimination imaging lens | |
| CN103217798A (en) | Digital projecting device based on non-telecentric beam path | |
| CN104656233A (en) | Curved-surface reflection type ultra-short focal projection lens | |
| JP2014044377A (en) | Projector and projection optical system | |
| CN205080354U (en) | Ultrashort burnt optical modulex of desktop |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20150527 |
|
| RJ01 | Rejection of invention patent application after publication |