CN208888404U - A kind of lens assembly improving skin image capture precision - Google Patents
A kind of lens assembly improving skin image capture precision Download PDFInfo
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- CN208888404U CN208888404U CN201821797908.XU CN201821797908U CN208888404U CN 208888404 U CN208888404 U CN 208888404U CN 201821797908 U CN201821797908 U CN 201821797908U CN 208888404 U CN208888404 U CN 208888404U
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- camera lens
- optical filter
- dispensing
- image capture
- skin image
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Abstract
The utility model discloses a kind of lens assemblies for improving skin image capture precision, including camera lens, the through-hole that light passes through is provided in the middle part of camera lens, one optical filter is fixed on camera lens by mode for dispensing glue and covers through-hole, the shape of its optical filter is polygon, positioned at the angle of polygon position at dispensing, dispensing diameter is 1-1.1mm.The utility model optimizes the structure of camera lens optical filter and the gluing process of optical filter, reduces the shielding rate of camera lens optical path.
Description
Technical field
The utility model relates to skins microcosmic, Image Acquisition, optical lens technology field, especially a kind of raising skin figure
As the lens assembly of acquisition precision.
Background technique
According to lens imaging principle it is found that there are any small blocking to cause greatly to image in camera lens optical path
Influence.And in micro image acquisition field, camera lens uses amplification characteristic, so the feelings of the image in acquisition zonule
Under condition, the amplification characteristic of camera lens produces the influence directly proportional to camera lens multiple to the minor change of optical path.Assuming that camera lens is not put
In the case where big, the variation of optical path generates the influence that coefficient is 1 to image, but there are 50 times of amplifications for camera lens, then error
50 times will be amplified.
Currently, a kind of mode that skin micro-analysis uses is acquisition skin micro image, passes through software logic algorithm point
Situations such as analysing skin follicle situation, dermatoglyph, skin complexion, acne, red capillary.In order to guarantee the reliable of network analysis
Property, what is taken is quantitative analysis method, i.e., the skin image area needs acquired every time remain unchanged, and subsequent image analysis exists
The relevant data of analyzing skin are carried out under the skin image size of fixed size;In addition, the clarity of microcosmic skin image is got over
Height is analyzed skin image more advantageous;And the bright-dark degree in the microcosmic resulting each region of image of acquisition is consistent, can also improve
Skin analysis precision.
But current skin image capture lens assembly, clarity is not high, and optical filter is when dispensing is fixed
Time, which is be easy to cause, blocks optical path, the presence at the dark angle of image is caused, so that acquired image bright-dark degree is inconsistent.
As shown in Figure 1, the structure for prior art optical filter and its glue-dispensing fixing structure on camera lens, existing optical filtering
Using circular configuration, position for dispensing glue is located on four positions of optical filter piece, for dispensing glue straight due to technique and restriction
Diameter is 1.4mm, and in situation for dispensing glue, glue is easy to block camera lens optical path, and leading to image quadrangle, there are shades.
Utility model content
In view of the above-mentioned deficiencies of the prior art, technical problem to be solved by the utility model is to provide a kind of raising skin figures
As the lens assembly of acquisition precision.
In order to solve the above technical problems, technical solution adopted in the utility model is: a kind of raising skin image capture
The lens assembly of precision, including camera lens, are provided with the through-hole that light passes through in the middle part of camera lens, and an optical filter is solid by mode for dispensing glue
It is scheduled on camera lens and covers through-hole, the shape of the optical filter is polygon, and the angle position of polygon, dispensing are located at dispensing
Diameter is 1-1.1mm.
In above-mentioned technical proposal, the shape of the optical filter is square.
In above-mentioned technical proposal, the technical parameter of the optical filter: central wavelength is 360 ± 2nm, and half-peak band width is
360 nm of 25nm, peak transmittance T > 60% at, cut-off wave band are 200nm-1100nm, and cut-off depth is OD3-OD6-C,
Clear aperture is that film layer area coverage is greater than 98%.
The beneficial effects of the utility model are:
1, optimize the structure of camera lens optical filter and the gluing process of optical filter, reduce the shielding rate of camera lens optical path.
2, optimize optical filter, improve Image Acquisition clarity.
Detailed description of the invention
Fig. 1 is the fixed structure schematic diagram of prior art camera lens and optical filter;
Fig. 2 is the fixed structure schematic diagram of the utility model camera lens and optical filter.
In figure, 1, camera lens;2, through-hole;3, optical filter;5, dispensing;6, angle position.
Specific embodiment
The utility model is described in further detail with reference to the accompanying drawing.
As shown in Fig. 2, a kind of lens assembly of raising skin image capture precision of the utility model, including camera lens, in camera lens
Middle part is provided with the through-hole that light passes through, and an optical filter is fixed on camera lens by mode for dispensing glue and covers through-hole, described in
The shape of optical filter is polygon, and the angle position of polygon is located at dispensing, and dispensing diameter is 1-1.1mm.Institute in the present embodiment
The shape for stating optical filter is square, and tool is there are four angle, just corresponding dispensing everywhere, and carrying out dispensings at this four angles can be with
It avoids blocking camera lens optical path, eliminates image shade.Realize image shielding rate less than 1%(, that is, image shadow region less than 1%).
Wherein, the optical filter uses ultra thin optical glass, and light transmittance, finish, flatness are good;Film layer firmness is good,
Wavelength is quasi-, and stability waits by force various features;Film layer compactness is good, narrow bandwidth, high cutoff rate, high transparency;Its technical parameter:
Central wavelength is 360 ± 2nm, half-peak band width 25nm, 360 nm of the at of peak transmittance T > 60%, and cut-off wave band is
200nm-1100nm, cut-off depth are OD3-OD6-C, and clear aperture (mm) is that film layer area coverage is greater than 98%.This technology parameter
Optical filter be a kind of narrow band filter, be especially suitable for selection 360nm-365nm wave band narrow band filter.The narrow band filter
The light of certain wave band is specified to pass through, the light cut-off other than light passing wave band.Its optical index is mainly central wavelength (CWL), half-band width
(FWHM), it is divided into narrowband and broadband.The light wave band or color of transmission are purer, and the recognition capability of instrument is stronger.Optimize optical filter
Image definition is improved 3%-5% on year-on-year basis by parameter.
Above embodiment only indicates that rather than limits the utility model, therefore all according to the utility model patent application
The equivalent change or modification that method described in range is done, is included in the scope of the utility model patent application.
Claims (3)
1. a kind of lens assembly for improving skin image capture precision, including camera lens, be provided in the middle part of camera lens light pass through it is logical
Hole, an optical filter are fixed on camera lens by mode for dispensing glue and cover through-hole, it is characterised in that: the shape of the optical filter
For polygon, the angle position of polygon is located at dispensing, dispensing diameter is 1-1.1mm.
2. a kind of lens assembly for improving skin image capture precision according to claim 1, it is characterised in that: the filter
The shape of mating plate is square.
3. a kind of lens assembly for improving skin image capture precision according to claim 1, it is characterised in that: the filter
The technical parameter of mating plate: central wavelength is 360 ± 2nm, half-peak band width 25nm, the at of peak transmittance T > 60% 360
Nm, cut-off wave band are 200nm-1100nm, and cut-off depth is OD3-OD6-C, and clear aperture is that film layer area coverage is greater than 98%.
Priority Applications (1)
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CN201821797908.XU CN208888404U (en) | 2018-11-02 | 2018-11-02 | A kind of lens assembly improving skin image capture precision |
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CN201821797908.XU CN208888404U (en) | 2018-11-02 | 2018-11-02 | A kind of lens assembly improving skin image capture precision |
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Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
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CN109239826A (en) * | 2018-11-02 | 2019-01-18 | 广州市皓品信息科技有限公司 | A kind of lens assembly improving skin image capture precision |
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2018
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Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
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CN109239826A (en) * | 2018-11-02 | 2019-01-18 | 广州市皓品信息科技有限公司 | A kind of lens assembly improving skin image capture precision |
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