CN201503310U - Optical system of novel color luminance meter - Google Patents
Optical system of novel color luminance meter Download PDFInfo
- Publication number
- CN201503310U CN201503310U CN2009201903274U CN200920190327U CN201503310U CN 201503310 U CN201503310 U CN 201503310U CN 2009201903274 U CN2009201903274 U CN 2009201903274U CN 200920190327 U CN200920190327 U CN 200920190327U CN 201503310 U CN201503310 U CN 201503310U
- Authority
- CN
- China
- Prior art keywords
- detector
- light path
- transmittance structure
- path transmittance
- optical system
- 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.)
- Expired - Fee Related
Links
Images
Abstract
The utility model provides an optical system of a novel color luminance meter, which comprises a first objective lens, a diaphragm, a reflector with a hole, an integration lens, a reflector, a second objective lens, a dividing plate and an eye lens, wherein the optical system of the color luminance meter is divided into three imaging regions on an imaging light path behind the integration lens, and is provided with three parallel optical detectors accordingly; the optical detectors are respectively an X (lambda) detector corresponding to a red wave band, a Y (lambda) detector corresponding to a green wave band and a Z (lambda) detector corresponding to a blue wave band; a red color filtering piece set, a green color filtering piece set and a blue color filtering piece set are respectively arranged at the front of the X (lambda) detector, the Y (lambda) detector and the Z (lambda) detector; and the optical system of the color luminance meter are provided with a first light path transmission structure corresponding to the X (lambda) detector, a second light path transmission structure corresponding to the Y (lambda) detector and a third light path transmission structure corresponding to the Z (lambda) detector in parallel, corresponding to the three imaging regions on the imaging light path behind the integration lens. The optical system has simple structure, high reliability, high stability and low power consumption.
Description
Technical field
The utility model relates to the photoelectric integral method color brightness meter optical system.
Background technology
Color luminance meter is used to measure brightness relevant with color and colorimetric parameter, has been widely used in the YC detection of association areas such as colour TV picture, traffic lights, building luminous environment, Landscape Lighting, LED/LCD giant-screen billboard.
The measuring method of color luminance meter has two kinds: a kind of is the spectral luminosity method, its principle is to measure the spectral composition of measured target by telescopic optical system, and standard colorimetric observer's spectral tristimulus value X (λ) Y (λ) Z (λ) that recommends according to International Commission on Illumination (CIE) calculates target relevant brightness and colorimetric parameter then.This color luminance meter measuring accuracy is higher, but price is relatively costly; Another kind is a photoelectric integral method, its principle is to pass through telescopic optical system, measured target is imaged on the detector with certain field angle, use the combination of one group of red, green, blue color filter group and photo-detector, their spectral response is matched to standard colorimetric observer's spectral tristimulus value X (λ) Y (λ) Z (λ) that International Commission on Illumination (CIE) is recommended, to obtain spectral tristimulus value, calculate relevant brightness and colorimetric parameter then.This quasi-instrument measuring accuracy is lower than the former, but instrument cost is lower, is widely used.
With regard to the optical system structure of present integration type color luminance meter, receive by objective lens from the measured target emitted light beams, light hurdle by the confine optical beam aperture, light beam is incident in catoptron with holes, aperture on the catoptron with holes has been determined the visual field size of surveying instrument, the part of light beam is passed aperture and is incident in integral mirror, and images on the photo-detector by color filter.What present color luminance meter adopted is single photo-detector, the red, green, blue color filter group is contained on the colour disk of rotation motor, during the motor rotation, the red, green, blue of the exportable measured target light beam of photo-detector is formed, by follow-up circuit and computed in software, can obtain the brightness and the colorimetric parameter of target.The color filter group dish rotates continuously in this system, and photo-detector then can constantly be exported the red, green, blue signal of measured target.Present Japanese Minolta, Topcon, the color luminance meter of the multiple model that U.S. Photoresearch etc. produce, and the CL-I color intensity of the Zhejiang University's development nineties, this quasi-instrument all adopts above-mentioned technology, and in the countries in the world widespread use.
In above apparatus structure, in order to realize the measurement to the XYZ tristimulus values, instrument internal can only be used revolution red, green, blue color filter group, makes them topped successively on the photo-detector surface, so the structure relative complex, and measuring speed is restricted.
Summary of the invention
Technical problem to be solved in the utility model provides a kind of color brightness meter optical system of novelty simple in structure.For this reason, the utility model is by the following technical solutions: its first object lens, the light hurdle, catoptron with holes, integral mirror, catoptron, second object lens, graticule, eyepiece, be split into three imaging regions on the imaging optical path of described color brightness meter optical system after integral mirror, and correspondingly be provided with three photo-detectors arranged side by side, described photo-detector is respectively X (λ) detector of corresponding red wave band, Y (λ) detector of corresponding green wave band, Z (λ) detector of corresponding blue wave band, described X (λ) detector, Y (λ) detector, before Z (λ) detector red color filter group is set respectively, the green color filter group, the blue color filter group; On the imaging optical path of described color brightness meter optical system after integral mirror, corresponding three imaging regions are provided with the first light path transmittance structure of corresponding X (λ) detector, the second light path transmittance structure of corresponding Y (λ) detector, the 3rd light path transmittance structure of corresponding Z (λ) detector side by side.
Owing to adopt the technical solution of the utility model: the utlity model has following advantage:
(1) high reliability: adopt and divide the mirror optical system, movement-less part has replaced and has adopted motor rotation color filter group mode for a long time.Therefore system architecture is simply compact, the reliability height;
(2) high stability: traditional color luminance meter adopts motor rotation RGB color filter group, causes the free difference of output color signal, and surveying instrument stability is reduced.And color luminance meter provided by the utility model is because three photo-detectors receiving target signals simultaneously, so the stability of apparatus measures and repeatability strengthens greatly, and during especially to the less stable target measurement, the measuring error of traditional color luminance meter can be very big;
(3) low-power consumption:, determined color luminance meter generally to be designed to hand-held and be easy to carry owing to often need to carry out in-site measurement in the application of color luminance meter.Needed power problems when color intensity score mirror structure therefore provided by the utility model has solved the rotation of employing motor, and be more suitable for powered battery.
Description of drawings
Fig. 1 is the optical system synoptic diagram of a kind of embodiment of the present utility model.
Fig. 2 divides the diagrammatic cross-section of mirror three look separate imaging structures for the utility model.
Fig. 3 divides the arrangement synoptic diagram of mirror three look separate imaging structures for the utility model.
Embodiment
The utility model comprises first object lens 2; light hurdle 3; catoptron 12 with holes; integral mirror 11; catoptron 4; second object lens 5; graticule 6; eyepiece 7; from the measured target emitted light beams through cover glass 1; receive by first object lens 2; light hurdle 3 through the confine optical beam aperture; light beam is incident in catoptron 12 with holes; aperture on the catoptron 12 with holes has been determined the visual field size of surveying instrument; the part of light beam is passed aperture and is incident in integral mirror 11; when the part of measured target light beam is passed the aperture of catoptron 12 with holes; remainder by mirror reflects with holes to catoptron 4; and image on the graticule 6 by second object lens 5, the observer can see measured target clearly by eyepiece 7.Therefore survey crew can make measuring system aim at measured target by above-mentioned aiming light path.
Be split into three imaging regions on the imaging optical path of described color brightness meter optical system after integral mirror, and correspondingly be provided with three photo-detectors arranged side by side, described photo-detector is respectively X (λ) detector of corresponding red wave band, Y (λ) detector of corresponding green wave band, Z (λ) detector of corresponding blue wave band, in the accompanying drawings, label 8-1,8-2 represents wherein two of these three photo-detectors respectively, described X (λ) detector, Y (λ) detector, before Z (λ) detector red color filter group is set respectively, the green color filter group, the blue color filter group, in the drawings, label 9-1 represents the red color filter group, the green color filter group, in the blue color filter group one of them; On the imaging optical path of described color brightness meter optical system after integral mirror, corresponding three imaging regions are provided with the first light path transmittance structure of corresponding X (λ) detector, the second light path transmittance structure of corresponding Y (λ) detector, the 3rd light path transmittance structure of corresponding Z (λ) detector side by side.
The described first light path transmittance structure, the second light path transmittance structure, the 3rd light path transmittance structure all can adopt convex lens, and in the accompanying drawings, drawing reference numeral 10-1,10-2,10-3 represent one of them convex lens respectively.
As shown in the figure, the utility model also is provided with sonde body 10-0, described integral mirror, convex lens 10-1, convex lens 10-2, convex lens 10-3, X (λ) detector, Y (λ) detector, integrated being arranged on the sonde body 10-0 of Z (λ) detector.
X of the present utility model (λ) detector, Y (λ) detector, Z (λ) detector adopt digital photo-detector.Because based on the research success of small-sized highly sensitive all-number luminosity, chromaticity transducer, therefore, the utility model can be realized X (λ) Y (λ) Z (λ) combined type all-number luminosity, the chromaticity transducer of diameter less than 30mm.Beam area at integral mirror 11 rear portions, can 120 ° or other suitable angles carry out city, three districts and cut apart, settle three convex lens 10-1,10-2,10-3, target beam is divided into three zones, incident beam is parallel beam after integral mirror 11, three parts cut apart light beam by convex lens 10-1,10-2,10-3 converges at three simultaneously and before is equipped with red respectively, green, the digital photo-detector surface of blue color filter group, by these three digital photo-detectors, it also is X (λ) detector, Y (λ) detector, the X of Z (λ) detector export target, Y, Z is (red, green, blue) signal, and, can calculate target relevant brightness and colorimetric parameter by follow-up circuit and software.
Because during coupling X (λ) Y (λ) Z (λ) curve, adopted the filter set of different spectral transmittances, photo-detector is also inequality in the wave band response of RGB simultaneously, and for typical silicon photo-detector, in visible light wave range, its spectrum sensitivity at different-waveband presents red wave band greater than green wave band, green wave band is greater than the response characteristic of blue wave band, therefore three actual light energy that photo-detector obtained and the output signal strength after the conversion of photo-detector photoelectricity and inequality.Adjust the glazed area size of the first light path transmittance structure, the second light path transmittance structure, the 3rd light path transmittance structure, the energy distribution that each imaging region is received tends to balance, and helps improving the overall sensitivity of color luminance meter.Generally speaking, when mean allocation input luminous energy, the output signal strength of Y (λ) detector is higher than X (λ) detector and Z (λ) detector, therefore in the design, suitably increase X (λ) detector and Z (λ) detector light signal input intensity, weaken Y (λ) detector light signal input intensity the output signal strength of three detectors will be tended to balance; In the utility model, realize above-mentioned imagination by the appropriate design first light path transmittance structure, the second light path transmittance structure, the 3rd light path transmittance structure.In force, can be by making the convex lens of different glazed areas, adjust three pairing glazed area proportional distributions of detector, make X (λ) detector, Y (λ) detector, Z (λ) the light signal energy that detector received satisfy the characteristic of Y＜X＜Z, reach the requirement of the output signal strength balance of detector, this can make three detector output signal sensitivity of the present utility model approaching.In the actual design, the pairing light input signal intensity of X (λ) detector: Y (λ) detector: Z (λ) detector the best is 1.2: 1: 1.4.The difference of above-mentioned glazed area can adopt selects the convex lens of different-diameter to realize, that is to say, the diameter of convex lens 10-2 is less than the diameter of the diameter of convex lens 10-1, the convex lens 10-1 diameter less than convex lens 10-3.
In addition, when the appropriate design second light path transmittance structure, the 3rd light path transmittance structure, by making the convex lens of different glazed areas, make Y (λ) detector, Z (λ) the light signal energy that detector received satisfy the characteristic of Y＜Z, also can reach quite high overall sensitivity.
Certainly, even the first light path transmittance structure, the second light path transmittance structure, the 3rd light path transmittance structure are identical, the glazed area of convex lens is equated, make X (λ) detector, Y (λ) detector, Z (λ) the light signal energy that detector received identical, also common measurement requirement can be satisfied, and technique effect of the present utility model can be realized.
Claims (8)
1. the color brightness meter optical system of a novelty, comprise first object lens, the light hurdle, catoptron with holes, integral mirror, catoptron, second object lens, graticule, eyepiece, it is characterized in that being split on the imaging optical path of described color brightness meter optical system after integral mirror three imaging regions, and correspondingly be provided with three photo-detectors arranged side by side, described photo-detector is respectively X (λ) detector of corresponding red wave band, Y (λ) detector of corresponding green wave band, Z (λ) detector of corresponding blue wave band, described X (λ) detector, Y (λ) detector, before Z (λ) detector red color filter group is set respectively, the green color filter group, the blue color filter group; On the imaging optical path of described color brightness meter optical system after integral mirror, corresponding three imaging regions are provided with the first light path transmittance structure of corresponding X (λ) detector, the second light path transmittance structure of corresponding Y (λ) detector, the 3rd light path transmittance structure of corresponding Z (λ) detector side by side.
2. the color brightness meter optical system of a kind of novelty as claimed in claim 1 is characterized in that the second light path transmittance structure and the 3rd light path transmittance structure satisfy: make the input optical signal intensity of the input optical signal intensity of Y (λ) detector less than Z (λ) detector.
3. the color brightness meter optical system of a kind of novelty as claimed in claim 1, it is characterized in that the first light path transmittance structure, the second light path transmittance structure and the 3rd light path transmittance structure satisfy: make the input optical signal of the input optical signal intensity of Y (λ) detector less than X (λ) detector, the input optical signal intensity of X (λ) detector is less than the input optical signal intensity of Z (λ) detector.
4. the color brightness meter optical system of a kind of novelty as claimed in claim 1, it is characterized in that the first light path transmittance structure, the second light path transmittance structure and the 3rd light path transmittance structure satisfy: make the input optical signal intensity of X (λ) detector equal the input optical signal of Y (λ) detector, the input optical signal intensity of Y (λ) detector equals the input optical signal intensity of Z (λ) detector.
5. the color brightness meter optical system of a kind of novelty as claimed in claim 4, it is characterized in that the described first light path transmittance structure, the second light path transmittance structure, the 3rd light path transmittance structure adopt convex lens respectively, the glazed area of the convex lens of the described first light path transmittance structure equals the convex lens of the second light path transmittance structure, and the glazed area of the convex lens of the second light path transmittance structure equals the convex lens of the 3rd light path transmittance structure.
6. the color brightness meter optical system of a kind of novelty as claimed in claim 2, it is characterized in that the described first light path transmittance structure, the second light path transmittance structure, the 3rd light path transmittance structure adopt convex lens respectively, the glazed area of the convex lens of the described second light path transmittance structure is less than the convex lens of the 3rd light path transmittance structure.
7. the color brightness meter optical system of a kind of novelty as claimed in claim 3, it is characterized in that the described first light path transmittance structure, the second light path transmittance structure, the 3rd light path transmittance structure adopt convex lens respectively, the glazed area of the convex lens of the described second light path transmittance structure is less than the convex lens of the first light path transmittance structure, and the glazed area of the convex lens of the described first light path transmittance structure is less than the convex lens of the 3rd light path transmittance structure.
8. the color brightness meter optical system of a kind of novelty as claimed in claim 1, it is characterized in that it is provided with sonde body, described integral mirror, the first light path transmittance structure, the second light path transmittance structure, the 3rd light path transmittance structure, X (λ) detector, Y (λ) detector, integrated being arranged on the sonde body of Z (λ) detector.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009201903274U CN201503310U (en) | 2009-07-30 | 2009-07-30 | Optical system of novel color luminance meter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009201903274U CN201503310U (en) | 2009-07-30 | 2009-07-30 | Optical system of novel color luminance meter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201503310U true CN201503310U (en) | 2010-06-09 |
Family
ID=42454242
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009201903274U Expired - Fee Related CN201503310U (en) | 2009-07-30 | 2009-07-30 | Optical system of novel color luminance meter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201503310U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105049841A (en) * | 2015-07-24 | 2015-11-11 | 中国科学院合肥物质科学研究院 | Method for enhancing color displaying capability of color camera through single-channel pre-optical filter |
| CN107560831A (en) * | 2017-08-29 | 2018-01-09 | 京东方科技集团股份有限公司 | A kind of color parameter measurement apparatus and its measuring method |
| CN109060123A (en) * | 2018-08-03 | 2018-12-21 | 杭州远方光电信息股份有限公司 | A kind of spectral radiance meter |
-
2009
- 2009-07-30 CN CN2009201903274U patent/CN201503310U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105049841A (en) * | 2015-07-24 | 2015-11-11 | 中国科学院合肥物质科学研究院 | Method for enhancing color displaying capability of color camera through single-channel pre-optical filter |
| CN105049841B (en) * | 2015-07-24 | 2017-11-28 | 中国科学院合肥物质科学研究院 | The method for improving color camera coloration ability using the pre- optical filter of single channel |
| CN107560831A (en) * | 2017-08-29 | 2018-01-09 | 京东方科技集团股份有限公司 | A kind of color parameter measurement apparatus and its measuring method |
| CN109060123A (en) * | 2018-08-03 | 2018-12-21 | 杭州远方光电信息股份有限公司 | A kind of spectral radiance meter |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101874401B (en) | One chip image sensor for measuring vitality of subject | |
| RU2011149308A (en) | SENSITIVITY DEVICE HAVING A COLOR SENSOR AND COLORLESS SENSOR FOR INFRARED REFLECTION | |
| CN102202185A (en) | Physical information acquisition device, solid-state imaging device and physical information acquisition method | |
| CN103512659B (en) | Detachable peripheral device of spectrometer | |
| WO2010003362A1 (en) | Brighness measurement device | |
| CN101813517B (en) | Device for measuring brightness | |
| CN103344613A (en) | Apparatus and method for measuring reflection characteristic of material | |
| CN201503310U (en) | Optical system of novel color luminance meter | |
| CN105241640B (en) | A kind of measuring device and its method of blue light weighting radiance | |
| CN203259248U (en) | Portable colorimeter | |
| CN201368770Y (en) | Spectral self-correcting photometer | |
| CN102997995B (en) | Portable light splitting color illuminometer capable of automatically calibrating wavelength and spectral energy | |
| KR101361175B1 (en) | Color Difference Meter Module Having Collimator Lens and Focusing Lens and Device of Color Meter Using The Same | |
| CN101344430A (en) | High-speed optical sensing apparatus and system capable of simultaneously sensing luminous intensity and chroma | |
| CN201611279U (en) | Brightness measuring unit | |
| CN101620006B (en) | Novel color brightness meter optical system | |
| CN102313598B (en) | Tester based on light splitting spectrum luminosity and night vision radiation intensity and test method thereof | |
| CN201352150Y (en) | Photometric device | |
| CN103905119A (en) | Visible light communication receiving device | |
| CN207197666U (en) | A kind of novel color luminance meter | |
| KR20070092577A (en) | An optical sensing system and a color analyzer with the optical sensing system | |
| CN208537026U (en) | A kind of spectral radiance meter | |
| US20190063995A1 (en) | Color parameter measurement device and color parameter measurement method | |
| CN102175313A (en) | Imaging brightness meter | |
| CN111044144A (en) | Portable spectral radiation screen brightness meter and optical system thereof |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20100609 Termination date: 20120730 |