CN208780892U - Near-infrared interactive mode camera lens - Google Patents
Near-infrared interactive mode camera lens Download PDFInfo
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- CN208780892U CN208780892U CN201821639679.9U CN201821639679U CN208780892U CN 208780892 U CN208780892 U CN 208780892U CN 201821639679 U CN201821639679 U CN 201821639679U CN 208780892 U CN208780892 U CN 208780892U
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Abstract
The utility model discloses a kind of near-infrared interactive mode camera lens, including the first lens, the second lens, optically focused channel, the third lens, the 4th lens and the 5th lens；First lens are the curved month type eyeglass for being convex into image side；Second lens are fan eyeglass, and plane of incidence area is greater than exit facet area, and the exit facet of the second lens is arc convex；The third lens are fan eyeglass, its plane of incidence area is less than exit facet area, the plane of incidence of the third lens is connected to by the optically focused channel of bending with the exit facet of the second lens, and the bending place in optically focused channel is tiltedly installed with reflection optical surface, and the exit facet of the third lens is arc convex；4th lens are fan camera lens, and plane of incidence area is less than exit facet area, and the plane of incidence of the 4th lens is arc convex；5th lens are the curved month type eyeglass for being convex to image source side.The utility model has big field angle, large aperture, miniaturization, high-resolution, the characteristic of low distortion, and can eliminate influence of the heat differential to lens system.
Description
Technical field
The utility model relates to optical projection fields, and in particular to a kind of near-infrared interactive mode camera lens.
Background technique
In recent years, with the continuous progress of science and technology, the gradually rise of interactive device, the application range of projection lens are driven
Also increasingly wider.In order to be suitable for miniaturized electronic devices and interactive demand, projection lens needs guaranteeing miniaturization
Meanwhile there is enough field angles, to obtain larger picture in narrow occasion, and guarantee good image quality and information
Acquisition.Traditional projection lens is generally used for being imaged, and eliminates various aberrations by using more eyeglass to improve and differentiate
Rate, but projection lens overall length can be made elongated, it is unfavorable for minimizing；And general big field angle projection lens, distortion all can be larger,
Image quality is poor.Such as the patent of invention of Patent No. " CN102879888A ", which sequentially has seven eyeglasses and one
A total reflection prism, the eyeglass number and prism location of the camera lens determine that the Lens can not further reduce, although having
Preferable image quality, but the structure not can guarantee the telecentricity characteristic of lens system, so that light is unevenly so as to out
Existing shade.
Interactive device, which relies primarily on to project through camera lens, generates signal, then imaged camera lens captures image, further passes through figure
As processing software extracts information, to realize the interactive functions such as multi-point touch, gesture identification.Therefore, projection lens mould
Quasi- signal quality has conclusive effect to the precision of information extraction.Infrared band can be filtered off because of the characteristic of its own
The influence of visible light, it is easier to realize the extraction of information.
Therefore, the utility model proposes it is a kind of with big field angle, large aperture, miniaturization, high-resolution, low distortion spy
Property, and influence of the heat differential to lens system is effectively eliminated, while achieving the effect that the infrared interactive camera lens of image space telecentricity.
Utility model content
The purpose of the utility model is to overcome the deficiencies in the prior art, a kind of big field angle, large aperture, small-sized is provided
Change, and there is high-resolution, distortion, while heat differential can be effectively eliminated to influence camera lens, can reach the close of the effect of image space telecentricity
Infrared interactive mode camera lens.
The technical solution of the utility model is as follows:
A kind of near-infrared interactive mode camera lens, from image side to image source side sequentially include first lens with positive light coke,
The second lens, optically focused channel with positive light coke, the third lens with negative power, the 4th lens with positive light coke
With the 5th lens with negative power；
First lens are the curved month type eyeglass for being convex into image side；
Second lens are fan eyeglass, and the plane of incidence area of second lens is greater than its exit facet area, described
The plane of incidence of second lens is the exit facet of first lens, and the exit facet of second lens is arc convex；
The third lens are fan eyeglass, and the plane of incidence area of the third lens is less than its exit facet area, described
The plane of incidence of the third lens is connected to by the optically focused channel of bending with the exit facet of second lens, the optically focused channel
Interior bending place, which is tiltedly installed with, makes the curved reflection optical surface of optical path, and the exit facet of the third lens is arc convex；
4th lens are fan camera lens, and the plane of incidence area of the 4th lens is less than its exit facet area, described
The plane of incidence of 4th lens is arc convex, and the exit facet of the third lens is corresponding with the exit facet of the 4th lens；
5th lens are the curved month type eyeglass for being convex to image source side, and the exit facet of the 4th lens is the 5th lens
The plane of incidence.
Further, the exit facet of the 5th lens is correspondingly arranged on optical filter.
Further, the optical filter is smalt optical filter either infrared cut of light optical filter.
Further, first lens are non-spherical glass lens, and the third lens, the 5th lens are spherical surface glass
Glass eyeglass.
Further, second lens, the 4th lens are plastic lens.
Further, the reflection optical surface is reflecting prism either plane of reflection mirror.
Compared with the existing technology, the utility model has the beneficial effects that: the utility model is designed reasonably, structure is simple,
According to optical Design, the first lens assume responsibility for the larger focal power of entire optical lens system, make axis outer light beam by preceding group
After eyeglass, the angle of light and optical axis is quickly reduced, and the first lens use aspherical face type, correct axis jointly with rear group of eyeglass
Outer aberration, only 5 eyeglass compositions, Miniaturization Design, positive negative power combination realize the full filed of optical lens system to system
There are excellent resolution ratio, large aperture in range, visual angle can reach 145 degree or more, and the third lens are adopted as spherical glass mirror
Piece, can effectively eliminate influence of the heat differential to camera lens, obtain more reliable, stable image quality, and the second lens, the 4th lens
It is all made of as plastic lens, optical distortion can be effectively reduced within 22%, the structure of the utility model designs, and also realizes
Image space telecentricity characteristic allows light to keep uniformly, without dark angle, and preferably amendment distortion.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the utility model.
Specific embodiment
Below in conjunction with the drawings and specific embodiments, the utility model is described in detail.
Referring to Fig. 1, the utility model provides a kind of near-infrared interactive mode camera lens, sequentially include from image side to image source side
The first lens 1 with positive light coke, the second lens 2 with positive light coke, optically focused channel 3, the third with negative power
Lens 4, the 4th lens 5 with positive light coke and the 5th lens 6 with negative power.
Wherein, first lens 1 are the curved month type eyeglass for being convex into image side.
Second lens 2 are fan eyeglass, and the plane of incidence area of second lens 2 is greater than its exit facet area, the
The plane of incidence of two lens 2 is the exit facet of the first lens 1, and the exit facet of the second lens 2 is arc convex.
The third lens 4 are fan eyeglass, and the plane of incidence area of the third lens 4 is less than its exit facet area, the
The plane of incidence of three lens 4 is connected to by the optically focused channel 3 of bending with the exit facet of the second lens 2, curved in optically focused channel 3
Being tiltedly installed at folding makes the curved reflection optical surface 7 of optical path, and the exit facet of the third lens 4 is arc convex.The reflected light
Face 7 can be used as reflecting prism either plane of reflection mirror.
4th lens 5 are fan camera lens, and the plane of incidence area of the 4th lens 5 is less than its exit facet area, the
The plane of incidence of four lens 5 is arc convex, and the exit facet of the third lens 4 is corresponding with the exit facet of the 4th lens 5.
5th lens 6 are the curved month type eyeglass for being convex to image source side, and the exit facet of the 4th lens 5 is the 5th lens 6
The exit facet of the plane of incidence, the 5th lens 6 is correspondingly arranged on optical filter 8.The optical filter 8 uses smalt optical filter.It adopts
With smalt technology, infrared light can be absorbed, increase the function and effect of visible light, reduce color difference and veiling glare, promoted
Image quality.In another embodiment, the optical filter 8 can also be adopted as infrared cut of light optical filter, since smalt is filtered
Mating plate be to infrared light it is absorption, compared to using the technical solution that reflect infrared light, will reduction due to infrared external reflection
The problems such as ghost of formation, veiling glare, it is therefore preferred that the optical filter is smalt optical filter.
Wherein, the first lens 1 are non-spherical glass lens, and the third lens 3, the 5th lens 6 are spheric glass lens, the
Two lens 2, the 4th lens 5 are plastic lens.
The utility model is designed reasonably, structure is simple, and according to optical Design, the first lens assume responsibility for entire optical frames
The larger focal power of head system, makes axis outer light beam after preceding group of eyeglass, and the angle of light and optical axis is quickly reduced, and the first lens
1 uses aspherical face type, corrects off-axis aberration jointly with rear group of eyeglass, only 5 eyeglass compositions, Miniaturization Design are positive and negative for system
Focal power combination, realizing has excellent resolution ratio within the scope of the full filed of optical lens system, large aperture, visual angle can reach
145 degree or more, and the third lens 3 are adopted as spheric glass lens, can effectively eliminate influence of the heat differential to camera lens, acquisition more may be used
It leans on, stable image quality, and the second lens 2, the 4th lens 5 are all made of as plastic lens, and it is abnormal can to effectively reduce optics
It changing within 22%, the design of the structure of the utility model also achieves image space telecentricity characteristic, and allow light to keep uniformly, without dark angle,
And preferably amendment distortion.
The above is only the preferred embodiments of the present utility model only, is not intended to limit the utility model, all practical at this
Made any modifications, equivalent replacements, and improvements etc., should be included in the guarantor of the utility model within novel spirit and principle
Within the scope of shield.
Claims (6)
1. a kind of near-infrared interactive mode camera lens, it is characterised in that: from sequentially including that there is positive light coke at image side to image source side
First lens, optically focused channel, the third lens with negative power, have positive light coke at the second lens with positive light coke
The 4th lens and the 5th lens with negative power；
First lens are the curved month type eyeglass for being convex into image side；
Second lens be fan eyeglass, and the plane of incidence area of second lens be greater than its exit facet area, described second
The plane of incidence of lens is the exit facet of first lens, and the exit facet of second lens is arc convex；
The third lens are fan eyeglass, and the plane of incidence area of the third lens is less than its exit facet area, the third
The plane of incidence of lens is connected to by the optically focused channel of bending with the exit facet of second lens, in the optically focused channel
Bending place, which is tiltedly installed with, makes the curved reflection optical surface of optical path, and the exit facet of the third lens is arc convex；
4th lens be fan camera lens, and the plane of incidence area of the 4th lens be less than its exit facet area, the described 4th
The plane of incidence of lens is arc convex, and the exit facet of the third lens is corresponding with the exit facet of the 4th lens；
5th lens are the curved month type eyeglass for being convex to image source side, and the exit facet of the 4th lens is the incidence of the 5th lens
Face.
2. near-infrared interactive mode camera lens according to claim 1, it is characterised in that: the exit facet of the 5th lens is corresponding
It is provided with optical filter.
3. near-infrared interactive mode camera lens according to claim 2, it is characterised in that: the optical filter is smalt optical filter
Either infrared cut of light optical filter.
4. near-infrared interactive mode camera lens according to claim 1, it is characterised in that: first lens are aspherical glass
Eyeglass, the third lens, the 5th lens are spheric glass lens.
5. near-infrared interactive mode camera lens according to claim 1, it is characterised in that: second lens, the 4th lens are equal
For plastic lens.
6. near-infrared interactive mode camera lens according to claim 1, it is characterised in that: the reflection optical surface is reflecting prism
Either plane of reflection mirror.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821639679.9U CN208780892U (en) | 2018-10-10 | 2018-10-10 | Near-infrared interactive mode camera lens |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821639679.9U CN208780892U (en) | 2018-10-10 | 2018-10-10 | Near-infrared interactive mode camera lens |
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| Publication Number | Publication Date |
|---|---|
| CN208780892U true CN208780892U (en) | 2019-04-23 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201821639679.9U Active CN208780892U (en) | 2018-10-10 | 2018-10-10 | Near-infrared interactive mode camera lens |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN118033878A (en) * | 2024-04-11 | 2024-05-14 | 中国科学院长春光学精密机械与物理研究所 | Double telecentric image position alignment measuring lens for micro-nano manufacturing technology |
-
2018
- 2018-10-10 CN CN201821639679.9U patent/CN208780892U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN118033878A (en) * | 2024-04-11 | 2024-05-14 | 中国科学院长春光学精密机械与物理研究所 | Double telecentric image position alignment measuring lens for micro-nano manufacturing technology |
| CN118033878B (en) * | 2024-04-11 | 2024-07-02 | 中国科学院长春光学精密机械与物理研究所 | Double telecentric image position alignment measuring lens for micro-nano manufacturing technology |
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