CN203414171U - Object-space telecentric type chroma detecting lens - Google Patents
Object-space telecentric type chroma detecting lens Download PDFInfo
- Publication number
- CN203414171U CN203414171U CN201320480121.1U CN201320480121U CN203414171U CN 203414171 U CN203414171 U CN 203414171U CN 201320480121 U CN201320480121 U CN 201320480121U CN 203414171 U CN203414171 U CN 203414171U
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- mirrors
- arrangement
- object space
- lens
- space telecentric
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Abstract
The utility model relates to an object-space telecentric type chroma detecting lens which comprises a front lens set (1) and a rear lens set (2). The chroma detecting lens is characterized in that a diaphragm (3) is installed at the focus of the front lens set (1), and the input end surface of a fiber (4) receiving the chroma is positioned at an exit pupil position of the rear lens set. The chroma detecting lens can uniformly divide all light energy into three portions, and energies of three fibers are not unequal, thereby improving the accuracy of measurement; and when the object distance is slightly changed, energy coupled into the fibers does not change, thereby improving the stability of measurement.
Description
Technical field
the utility model relates to a kind of optical detecting instrument, especially a kind of optical texture for colorimetric detection, specifically a kind of object space core type colorimetric detection far away camera lens.
Background technology
As everyone knows, at present, nearly all display screen is all colored, such as computer monitor, mobile phone display screen etc., but due to a variety of causes, the color sense of some display is bright true, the obvious distortion that some shows, even color shows complete mistake, so need to adopt colorimetric instrument to carry out Measurement and calibration to it.Because the test philosophy of colourity tester is the accuracy of judging color by colourity and the brightness of test three primary colours (RGB), what therefore receive luminous energy is an one minute optical fiber of three, as shown in Figure 2.The core component of chromaticity detector is an optical lens of collecting screen light to be tested, and it has directly determined stability and the accuracy of test data.Therefore, the design of this optical lens is most important.
Common imaging lens, be all by thing direct imaging on image planes, if adopted in this way, if if exist brightness irregularities will cause the energy of three optical fiber of output different in so tested scope, thereby affect the accuracy of its test; If while testing there is small variation and also can cause the variation of measurement result in object distance, thereby reduced its stability simultaneously.Therefore, being necessary to design a kind of new optical texture solves.
Summary of the invention
The purpose of this utility model is for existing optical lens, when measuring colourity, to cause the energy entering in corresponding three optical fiber different and affect the problem of detection accuracy, designs the object space core type colorimetric detection far away camera lens that a kind of energy distribution is consistent.
The technical solution of the utility model is:
A core type colorimetric detection camera lens far away, it comprises front arrangement of mirrors 1 and rear arrangement of mirrors 2, it is characterized in that, at the place, focal position of front arrangement of mirrors 1, diaphragm 3 is installed, the input end face that receives the optical fiber 4 of colourity is positioned at the place, exit pupil position of rear arrangement of mirrors 2.
Described front arrangement of mirrors 1 and/or rear arrangement of mirrors 2 form object space telecentric structure by three optical mirror slips.
The beneficial effects of the utility model:
The utility model has adopted object space telecentric structure.In this structure, one minute three optic fibre input end face is not the position that is placed on image planes, but be placed on the position of emergent pupil, the luminous energy of all visual fields can be divided into 3 parts uniformly like this, can not have three unequal situations of optical fiber energy, thereby improve the accuracy of measuring; Meanwhile, when object distance generation subtle change, the energy that is coupled into optical fiber is constant, thereby has improved the stability of measuring.
Accompanying drawing explanation
Fig. 1 is optical texture schematic diagram of the present utility model.
Fig. 2 is reception optic fiber configureing schematic diagram of the present utility model.
Embodiment
Below in conjunction with drawings and Examples, the utility model is further described.
As shown in Figure 1-2.
A kind of object space core type colorimetric detection far away camera lens, it comprises front arrangement of mirrors 1 and rear arrangement of mirrors 2, front arrangement of mirrors 1 and rear arrangement of mirrors 2 can form object space telecentric structure by three optical mirror slips, as shown in Figure 1, place, focal position at front arrangement of mirrors 1 is provided with diaphragm 3, and the input end face that receives the optical fiber 4 of colourity is positioned at the place, exit pupil position of rear arrangement of mirrors 2.As can be seen from Figure 1 the utility model is object space telecentric structure, and diaphragm 3 is placed on the focal plane of front group; Meanwhile, the input end face of the optical fiber 4 of reception use is placed on exit pupil position.Fig. 2 is optical fiber structure figure, and the three primary colours of premenstrual arrangement of mirrors and rear arrangement of mirrors refraction are uniformly distributed in exit pupil position, enters after optical fiber one minute three, then send into analyser analysis after color filter filters, and can guarantee the accuracy of measuring.
The utility model does not relate to partly all prior aries that maybe can adopt same as the prior art to be realized.
Claims (2)
1. an object space core type colorimetric detection far away camera lens, it comprises front arrangement of mirrors (1) and rear arrangement of mirrors (2), it is characterized in that, at the place, focal position of front arrangement of mirrors (1), diaphragm (3) is installed, the input end face that receives the optical fiber (4) of colourity is positioned at the place, exit pupil position of rear arrangement of mirrors (2).
2. object space according to claim 1 core type colorimetric detection far away camera lens, is characterized in that described front arrangement of mirrors (1) and/or rear arrangement of mirrors (2) form object space telecentric structure by three optical mirror slips.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320480121.1U CN203414171U (en) | 2013-08-07 | 2013-08-07 | Object-space telecentric type chroma detecting lens |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320480121.1U CN203414171U (en) | 2013-08-07 | 2013-08-07 | Object-space telecentric type chroma detecting lens |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203414171U true CN203414171U (en) | 2014-01-29 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320480121.1U Expired - Lifetime CN203414171U (en) | 2013-08-07 | 2013-08-07 | Object-space telecentric type chroma detecting lens |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203414171U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110741300A (en) * | 2017-06-15 | 2020-01-31 | 柯尼卡美能达株式会社 | Optical system for measurement, color luminance meter, and color meter |
| CN113655598A (en) * | 2021-08-06 | 2021-11-16 | 苏州源卓光电科技有限公司 | Illumination light path system and exposure optical system |
-
2013
- 2013-08-07 CN CN201320480121.1U patent/CN203414171U/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110741300A (en) * | 2017-06-15 | 2020-01-31 | 柯尼卡美能达株式会社 | Optical system for measurement, color luminance meter, and color meter |
| CN113655598A (en) * | 2021-08-06 | 2021-11-16 | 苏州源卓光电科技有限公司 | Illumination light path system and exposure optical system |
| CN113655598B (en) * | 2021-08-06 | 2023-02-21 | 苏州源卓光电科技有限公司 | Illumination light path system and exposure optical system |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20140129 |