CN206270580U - A kind of reflective ultrashort out-of-focus projection's camera lens - Google Patents
A kind of reflective ultrashort out-of-focus projection's camera lens Download PDFInfo
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- CN206270580U CN206270580U CN201621212929.1U CN201621212929U CN206270580U CN 206270580 U CN206270580 U CN 206270580U CN 201621212929 U CN201621212929 U CN 201621212929U CN 206270580 U CN206270580 U CN 206270580U
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Abstract
The utility model discloses a kind of reflective ultrashort out-of-focus projection's camera lens, belong to ultrashort burnt technical field, the camera lens include camera lens before group and with the camera lens before group with identical primary optical axis camera lens after group, group includes a projection imaging lens group after the camera lens, the projection imaging lens group is placed with multi-disc spheric glass and aspherical lens as axle from back to front with wherein edema with the heart involved horizontal line, group is free-form surface mirror before the camera lens, the center of the free-form surface mirror is upwardly deviated from the horizontal line 25mm, it is tilted to the right 8 °, horizontal range between the rear end and the front end of free-form surface mirror of the projection imaging lens group is 180mm.The utility model corrects the influence of image planes trapezoidal distortion in traditional short-focus lens using free form surface extension, using aspherical lens aberration correction, the distortion that short focus projecting apparatus easily occurs is solved, there is distortion, the problems such as edge blurry, more preferable image quality is brought to experience to spectators.
Description
Technical field
The utility model belongs to ultrashort burnt technical field, more particularly to reflective ultrashort out-of-focus projection's camera lens.
Background technology
After short focus technology is applied to projector, just paid close attention to by many people.Short focus technology can be greatly shortened
Projector distance, allows small space to project big picture, has broken away from limitation of the projector distance to projector.At present, China
Develop into the whole world maximum manufacture base and consumption market of video industry Related product and system.Short focus projector not only overcomes
The high light energy direct projection of projector enters speaker's eyes, brings directly stimulation, and the problem of the health that affects one's power of vision has been reached in minimum
Realize that clear the optimal of big picture is shared in space, and easy for installation, save space, good Consumer's Experience can be brought.
In existing technology, realizing the projection of ultrashort Jiao mainly has two kinds of technologies：One kind uses fish-eye type projection lens
Short focus technology, it is another then be the ultrashort burnt technology using mirror type projection lens.Using the short focus skill of fish-eye type camera lens
Art, due to technical reason, often causes trapezoidal flexural distortion amount very big, so as to cause the curve on projected picture periphery
Often it is bent.Using the ultrashort burnt technology of free form surface lenses/mirrors, not only amount of distortion is small, projected picture deflection
It is small, and projector distance also shortens much compared with the camera lens of fish-eye type.But existed using free-form surface mirror technology and set
Meter method and computing formula are complicated, and manufacture craft required by it is difficult the problems such as grasping.
It is 201310604016.9 that State Patent Office discloses a number of patent application on November 25th, 2013, entitled
A kind of utility model patent of the ultrashort out-of-focus projection's camera lens of curved face reflecting type.This patent disclose following technical scheme：Including camera lens
Afterwards group and camera lens before group, wherein, before the camera lens group include a camber reflection unit.According to aforesaid way, the utility model is carried
The ultrashort out-of-focus projection's camera lens of curved face reflecting type of confession, the forward direction light organized before camera lens is arranged on by using group after curved surface camera lens and is propagated
On path, organized after the curved surface camera lens for the light that outgoing is organized after camera lens to be reflected away, so as to realize ultrashort out-of-focus projection
Purpose, and increased the angle of visual field.But this patent uses the off-axis formula eyeglass of multi-disc, matching requirements are high.
It is 201420149792.4 that State Patent Office discloses a number of patent application on March 28th, 2014, entitled
The utility model patent of reflective ultrashort out-of-focus projection's camera lens.This patent disclose following technical scheme：Including reflective ultrashort Jiao
Projecting apparatus, computer and infrared exoelectron pen, the Single port on the computer pass through or video line and reflective ultrashort burnt throwing
Single port on shadow instrument is connected, and the Two-port netwerk on the computer is by two ends on connecting line and reflective ultrashort out-of-focus projection's instrument
Mouth is connected, and infrared image sensor is provided with reflective ultrashort out-of-focus projection's instrument.The utility model can be thrown with very-short-reach
Shadow, saving uses space, and projection definition is high, use cost.But this patent size is larger, it has not been convenient to carry.
Utility model content
Problem to be solved in the utility model be to provide it is a kind of it is easy to carry, be easily installed and bring more preferable image quality to experience
Reflective ultrashort out-of-focus projection's instrument camera lens.Therefore, now proposing following technical scheme.
A kind of reflective ultrashort out-of-focus projection's camera lens, including before camera lens group and with the camera lens before group there is identical primary optical axis
Camera lens after group, after the camera lens group include a projection imaging lens group, the projection imaging lens group is with wherein edema with the heart involved horizontal line
It is placed with multi-disc spheric glass and aspherical lens from back to front for axle, group is free-form surface mirror before the camera lens, described
The center of free-form surface mirror is upwardly deviated from the horizontal line 25mm, is tilted to the right 8 °, after the projection imaging lens group
Horizontal range between end and the front end of free-form surface mirror is 180mm.
Further improvement of these options, the projection imaging lens group is aspherical including 12 spheric glasses and 2
Eyeglass, wherein first 2 is aspherical lens, 12 is spheric glass afterwards.
Compared to existing technology, the beneficial effects of the utility model are：
（1）The projection imaging lens group that be combined into for free-form surface mirror and sphere, aspheric lens by the utility model
It is combined, constitutes a kind of refractive and reflective optical system.On the one hand the utility model have modified biography using free-form surface mirror extension
System fisheye projection system in image planes because trapezoidal distortion and caused by projected picture edge blurry problem, on the other hand using projection
Aspherical lens aberration correction in imaging lens group, solves the problems, such as that distortion easily occurs in short focus projecting apparatus, to sight
Crowd brings more preferable image quality to experience.
（2）Projection imaging group is designed to the assembling of multi-disc eyeglass coaxial-type by the utility model, is easy to the assembling in production.
（3）The center of the free-form surface mirror is upwardly deviated from the horizontal line 25mm, is tilted to the right 8 °, the projection
Horizontal range between the rear end of imaging lens group and the preceding end value of free-form surface mirror is 180mm, can so ensured
In the case that drop shadow effect is constant, the distance of camera lens is reduced, can fully meet mini portable projection requirements.
Brief description of the drawings
Fig. 1 is a kind of structural representation of reflective ultrashort out-of-focus projection's camera lens described in the utility model.
Fig. 2 is using a kind of structural representation of reflective ultrashort out-of-focus projection's system of the present utility model
Reference：Projection imaging lens group -1；Free-form surface mirror -2；Dmd chip -3；Right-angle prism -4..
Specific embodiment
For technological means, creation characteristic, reached purpose and effect for realizing the utility model are easy to understand, below
With reference to specific embodiment, the utility model is expanded on further.
A kind of reflective ultrashort out-of-focus projection's camera lens as shown in Figure 1, including before camera lens group and with camera lens before group have phase
With group after the camera lens of primary optical axis, group includes a projection imaging lens group 1 after the camera lens, and the projection imaging lens group 1 is with it
Central horizontal line is placed with multi-disc spheric glass and aspherical lens from back to front for axle, and group is a free form surface before the camera lens
Speculum 2, the center of free-form surface mirror 2 is upwardly deviated from the central horizontal line 25mm of the projection imaging lens group 1,
It is tilted to the right 8 °, the horizontal range between the front end of the free-form surface mirror 2 and the rear end of projection imaging lens group 1 is
180mm.It is such to be designed to, in the case where ensureing that drop shadow effect is constant, reduce the size of whole camera lens, meet it is mini just
The demand taken.
On the one hand the utility model have modified the image planes in traditional fisheye projection system using free-form surface mirror extension
Because of trapezoidal distortion and caused by projected picture edge blurry problem, on the other hand using the aspherical mirror in projection imaging lens group
Piece aberration correction, solves the problems, such as that distortion easily occurs in short focus projecting apparatus, brings more preferable image quality to experience to spectators.
In the present embodiment, the projection imaging lens group 3 includes 12 spheric glasses and 2 aspherical lens, wherein,
First 2 is aspherical lens, and 12 is spheric glass afterwards.Projection imaging lens group 3 is designed to multi-disc eyeglass by the utility model
Coaxial-type is assembled, and is easy to the assembling in production.
Ultrashort out-of-focus projection's camera lens described in the utility model may be used on a reflective ultrashort burnt throwing as shown in Figure 2
In shadow system, the optical projection system is provided with a right-angle prism 2 after projection imaging lens group 3, and the top of the right-angle prism 2 is provided with
Dmd chip 1, light enters right-angle prism 2 through dmd chip 1, and light is reflected into projection imaging lens group 3 by right-angle prism 2,
Then light path is changed by free form surface transmitting mirror 4 again, increases light path, projected on projection screen, reach the throwing of ultrashort Jiao
Shadow effect.With right-angle prism 2 come reflection light, the loss of light luminance can be to greatest extent reduced, it is ensured that projected picture brightness
It is constant.
Those of ordinary skill in the art is it should be appreciated that the embodiment of the above is intended merely to illustrate that this practicality is new
Type, and be not used as be to restriction of the present utility model, if in spirit of the present utility model, to the above
Change, the modification of embodiment will all fall in right of the present utility model.
Claims (2)
1. a kind of reflective ultrashort out-of-focus projection's camera lens, including before camera lens group and with the camera lens before group with identical primary optical axis
Group after camera lens, it is characterised in that：Group includes a projection imaging lens group after the camera lens, and the projection imaging lens group is with wherein
Edema with the heart involved horizontal line is placed with multi-disc spheric glass and aspherical lens from back to front for axle, is organized before the camera lens as free form surface reflects
Mirror, the center of the free-form surface mirror is upwardly deviated from the horizontal line 25mm, is tilted to the right 8 °, the projection imaging camera lens
Horizontal range between the rear end and the front end of free-form surface mirror of group is 180mm.
2. the reflective ultrashort out-of-focus projection's camera lens of one kind according to claim 1, it is characterised in that：The projection imaging camera lens
Group includes 12 spheric glasses and 2 aspherical lens, wherein first 2 is aspherical lens, 12 is spheric glass afterwards.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621212929.1U CN206270580U (en) | 2016-11-10 | 2016-11-10 | A kind of reflective ultrashort out-of-focus projection's camera lens |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621212929.1U CN206270580U (en) | 2016-11-10 | 2016-11-10 | A kind of reflective ultrashort out-of-focus projection's camera lens |
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| Publication Number | Publication Date |
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| CN206270580U true CN206270580U (en) | 2017-06-20 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201621212929.1U Active CN206270580U (en) | 2016-11-10 | 2016-11-10 | A kind of reflective ultrashort out-of-focus projection's camera lens |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110426821A (en) * | 2019-08-15 | 2019-11-08 | 郭润勐 | Camera lens and image processing method are delivered directly with the ultrashort coke for offsetting picture distortion function |
-
2016
- 2016-11-10 CN CN201621212929.1U patent/CN206270580U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110426821A (en) * | 2019-08-15 | 2019-11-08 | 郭润勐 | Camera lens and image processing method are delivered directly with the ultrashort coke for offsetting picture distortion function |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20230516 Address after: Room 108, No. 216 Jiangdong North Road, Gulou District, Nanjing City, Jiangsu Province, 210000 Patentee after: Guoke Huahan (Jiangsu) Education and Cultural Development Co.,Ltd. Address before: 210000 New Town Science and Technology Building 01, 14th Floor, 69 Olympic Sports Street, Jianye District, Nanjing City, Jiangsu Province Patentee before: NANJING YUEVM INTELLIGENT TECHNOLOGY Co.,Ltd. |