CN101865412A - Device for producing uniform area light source with continuously adjustable colors - Google Patents
Device for producing uniform area light source with continuously adjustable colors Download PDFInfo
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- CN101865412A CN101865412A CN 201010194538 CN201010194538A CN101865412A CN 101865412 A CN101865412 A CN 101865412A CN 201010194538 CN201010194538 CN 201010194538 CN 201010194538 A CN201010194538 A CN 201010194538A CN 101865412 A CN101865412 A CN 101865412A
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Abstract
The invention provides a device for producing a uniform area light source with continuously adjustable colors, and belongs to the technical field of optical precision measurement. Light emitted from the uniform area light source is incident to a continuous color mixing system; the incident light is divided into three beams of three-primary-color light by a base plate of a color filter; a red light barrier, a green light barrier and a blue light barrier respectively shield corresponding color light; tristimulus values of the emergent light of the continuous color mixing system are changed by changing the ratio of optical areas of the three beams of light and adjusting the ratio of luminous fluxes of the three color light; and after the three color light is mixed through the continuous color mixing system, the uniform area light source with specific color is output at a light outlet of a IIth integrating sphere. The invention provides the continuous color mixing system capable of independently adjusting the three color light so as to realize accurate color adjustment of emergent light. The device has the advantages of continuous color adjustment and high output power, and can be used for measuring the resolution of colors.
Description
Technical field
The present invention relates to a kind of device that is used to produce the uniform area light source of color tunable, belong to technical field of optical precision measurement, be particularly useful for producing the continuously adjustable uniform area light source of color.
Technical background
In recent years, along with development of science and technology, color in the application of every field more and more widely.In fields such as robot vision, extraordinary personnel's chromatoptometry, Photoelectric Tracking and Aiming fire control, light textile, building, environment and the fine arts, it is outstanding especially that the importance of color seems, therefore, the measurement of color becomes the underlying issue in these fields.For the color identifying ability of inspected object color or evaluating object accurately, need can power big a, stable performance and can produce versicolor light source.
Generally can adopt the light source of the method generation particular color of colour atla and prismatic decomposition, but these two kinds of methods all exist defective.Place a series of colour atlas at specific uniform area light source exit portal, can constitute the light source of particular color, but this method can only produce discrete color, can't produce continuously adjustable color; In order to realize bigger gamut range and higher color identifying power, the quantity of colour atla will be very huge.Adopt the method for prism or grating beam splitting can produce the continuously adjustable light source of color, but the light source power that this method produces is low, frame for movement is complicated, and can't produce the color (being magenta) between blueness and the redness.
For the light source of realizing that color is adjustable continuously and the power power output is bigger, the present invention has designed the device that is used to produce the continuously adjustable uniform area light source of color.This device can realize continuously changing the purpose of emergent light color by the flux ratio of three kinds of coloured light of independent toning; Produce three kinds of coloured light by colour filter in this device, therefore, can realize bigger power output.
Summary of the invention
The objective of the invention is to produce the continuously adjustable light source problem of color, and propose a kind of device that is used to produce the continuously adjustable uniform area light source of color in order to solve.
The objective of the invention is to be achieved through the following technical solutions:
The described device that is used to produce the continuously adjustable uniform area light source of color comprises uniform area light source, continuous tinting system and additive colo(u)r system; Uniform area light source, continuous tinting system and additive colo(u)r system are joined in proper order, wherein:
Uniform area light source is made up of light source and I integrating sphere; Tinting system is made up of colour filter base plate, ruddiness light barrier, green glow light barrier, blue light light barrier continuously, and colour filter base plate, ruddiness light barrier, green glow light barrier, blue light light barrier are circle and have identical radius; Additive colo(u)r system is made up of the II integrating sphere.
Light source is connected with the light inlet of I integrating sphere, and continuously tinting system is positioned at the emergent ray direction of I integrating sphere, and the colour filter base plate by wherein and the light-emitting window of I integrating sphere join; Ruddiness light barrier, green glow light barrier, blue light light barrier are arranged between the light inlet of colour filter base plate and II integrating sphere, the precedence interchangeable that ruddiness light barrier, green glow light barrier, blue light light barrier are put in continuous tinting system; Trim ring all is equipped with in the outer of colour filter base plate, ruddiness light barrier, green glow light barrier, blue light light barrier, has the sign of the logical light area of expression on the trim ring, by according to sign rotation trim ring, changes logical light area during use; Colour filter base plate, ruddiness light barrier, green glow light barrier, blue light light barrier can rotate by the trim ring that rotates on it.
The axle center of colour filter base plate, ruddiness light barrier, green glow light barrier, blue light light barrier point-blank;
The colour filter base plate is divided into six sector regions, and wherein three is lighttight sector region, and they are respectively between any two and are used for redness, green, the blue sector region that filters, and is covered with redness, green, blue color filter respectively;
Have a lighttight sector region on the ruddiness light barrier, this sector region should be not less than the sector region that is used to leach ruddiness on the colour filter base plate;
Have a lighttight sector region on the green glow light barrier, this sector region should be not less than the sector region that is used to leach green glow on the colour filter base plate;
Have a lighttight sector region on the blue light light barrier, this sector region should be not less than the sector region that is used to leach blue light on the colour filter base plate;
The emergent ray direction of tinting system is aimed at II integrating sphere light inlet continuously;
Continuously in the tinting system, can also set up an attenuating plate between I integrating sphere light-emitting window and II integrating sphere, as preferably, its position is arranged between I integrating sphere light-emitting window and the colour filter base plate; Attenuating plate has identical radius with colour filter base plate, ruddiness light barrier, green glow light barrier, blue light light barrier, and the axle center of its axle center and colour filter base plate, ruddiness light barrier, green glow light barrier, blue light light barrier point-blank; The effect of attenuating plate is the coloured light adjustable power that makes output, avoids power excessive or too small.
Attenuating plate can be the even attenuator of a circle, also can adopt and colour filter base plate identical construction, remove three in the colour filter board structure sector regions that are used for redness, green, blue optical filtering this moment, only keeps three lighttight sector regions on it; Such benefit is, can in use change the power of emergent light as required, and need not to change attenuator.
Trim ring is equipped with in the outer of attenuating plate, has the sign of expression attenuation degree on the trim ring, by according to sign rotation trim ring, changes the luminous flux of emergent light during use; And can rotate by the trim ring that rotates on it.
The total interface place should guarantee not light leak in this device.
Principle of the present invention is as follows:
After the light of uniform area light source outgoing enters continuous tinting system, by the colour filter base plate incident light is divided into the three beams primaries, ruddiness light barrier, green glow light barrier and blue light light barrier block corresponding a kind of coloured light respectively, by changing the logical light area ratio of three-beam, can regulate the flux ratio of three kinds of coloured light, thereby change the tristimulus values of continuous tinting system emergent light; Three kinds of coloured light are exported the uniform area light source of particular color at the light-emitting window of II integrating sphere after additive colo(u)r system is mixed.
The present invention contrasts prior art and has following innovative point:
1. change the spatial distribution of emergent light by the logical light area that changes three kinds of color colour filters, the passing through area and can regulate continuously of three kinds of colour filters, therefore, the spatial distribution of emergent light is that color also can be regulated continuously.
2. the area of three kinds of color colour filters can independent regulation, thereby realizes the adjusting of emergent light color easily.
The present invention contrasts prior art and has following beneficial effect:
1. utilize the rotation of colour filter to realize the color adaptation of emergent light,, can realize the accurate adjusting of emergent light color by critically controlling the angle of colour filter rotation.
2. can realize bigger light source output power.
Description of drawings
Fig. 1 is the schematic representation of apparatus that is used to produce the continuously adjustable uniform area light source of color;
Fig. 2 is the application schematic diagram of embodiment that is used to produce the device of the continuously adjustable uniform area light source of color;
Wherein: 1-uniform area light source, 2-halogen tungsten lamp light source, 3-I integrating sphere, the continuous tinting system of 4-, 5-attenuating plate, 6-colour filter base plate, 7-ruddiness light barrier, 8-green glow light barrier, 9-blue light light barrier, 10-additive colo(u)r system, 11-II integrating sphere, the outlet of 12-II integrating sphere, 13-graticle, 14-lens, 15-spectrographic detection head, 16-optical fiber, 17-spectrometer.
The specific embodiment
The invention will be further described below in conjunction with drawings and Examples.
Basic thought of the present invention is to utilize uniform area light source irradiation colour filter to produce primaries, by integrating sphere primaries is mixed into the light of particular color again.Regulate the spectral tristimulus value of emergent light, the i.e. color of emergent light by the flux ratio that changes primaries.
Embodiment
The described device that is used to produce the continuously adjustable uniform area light source of color is made up of uniform area light source (1), continuous tinting system (4) and additive colo(u)r system (10); Uniform area light source (1), continuous tinting system (4) and additive colo(u)r system (10) order are joined, wherein:
Uniform area light source (1) is made up of halogen tungsten lamp light source (2) and I integrating sphere (3); Tinting system (4) is made up of colour filter base plate (6), ruddiness light barrier (7), green glow light barrier (8), blue light light barrier (9) continuously, and colour filter base plate (6), ruddiness light barrier (7), green glow light barrier (8), blue light light barrier (9) are circle and have identical radius; Additive colo(u)r system (10) is made up of II integrating sphere (11).
The light inlet of halogen tungsten lamp light source (2) and I integrating sphere (3) is connected, and continuously tinting system (4) is positioned at the emergent ray direction of I integrating sphere (3), and the colour filter base plate (6) by wherein and the light-emitting window of I integrating sphere (3) join; Ruddiness light barrier (7), green glow light barrier (8), blue light light barrier (9) are successively set between the light inlet of colour filter base plate (6) and II integrating sphere (11), wherein also interchangeable of ruddiness light barrier (7), green glow light barrier (8), blue light light barrier (9) precedence of putting in tinting system (4) continuously; Trim ring all is equipped with in the outer of colour filter base plate (6), ruddiness light barrier (7), green glow light barrier (8), blue light light barrier (9), has the sign of the logical light area of expression on the trim ring, by according to sign rotation trim ring, changes logical light area during use; Colour filter base plate (6), ruddiness light barrier (7), green glow light barrier (8), blue light light barrier (9) can rotate by the trim ring that rotates on it.
The axle center of colour filter base plate (6), ruddiness light barrier (7), green glow light barrier (8), blue light light barrier (9) point-blank;
In the present embodiment, colour filter base plate (6) is divided into six 60 ° of sector regions that grade is big, wherein three is lighttight sector region, and they are respectively between any two and are used for redness, green, the blue sector region that filters, and is covered with redness, green, blue color filter respectively;
Have lighttight 60 ° of sector regions on the ruddiness light barrier (7), this sector region should be not less than the sector region that is used to leach ruddiness on the colour filter base plate (6);
Have lighttight 60 ° of sector regions on the green glow light barrier (8), this sector region should be not less than the sector region that is used to leach green glow on the colour filter base plate (6);
Have lighttight 60 ° of sector regions on the blue light light barrier (9), this sector region should be not less than the sector region that is used to leach blue light on the colour filter base plate (6);
The emergent ray direction of tinting system (4) is aimed at II integrating sphere (11) light inlet continuously;
In the tinting system (4), be provided with attenuating plate (5) between I integrating sphere (3) light-emitting window and the colour filter base plate (6) continuously; Attenuating plate (5) has identical radius with colour filter base plate (6), ruddiness light barrier (7), green glow light barrier (8), blue light light barrier (9), and the axle center of its axle center and colour filter base plate (6), ruddiness light barrier (7), green glow light barrier (8), blue light light barrier (9) point-blank; The effect of attenuating plate (5) is the coloured light adjustable power that makes output, avoids power excessive or too small.
Attenuating plate (5) can be the even attenuator of a circle, also can adopt and colour filter base plate (6) identical construction, remove three in colour filter base plate (6) structure sector regions that are used for redness, green, blue optical filtering this moment, only keeps three lighttight sector regions on it; Such benefit is, can in use change the power of emergent light as required, and need not to change attenuator.
Trim ring is equipped with in the outer of attenuating plate (5), has the sign of expression attenuation degree on the trim ring, by according to sign rotation trim ring, changes the luminous flux of emergent light during use; And can rotate by the trim ring that rotates on it.
The total interface place should guarantee not light leak in this device.
Below the light path in this device is described below:
The light that halogen tungsten lamp light source (2) sends enters I integrating sphere (3), form the uniform area light source of spectrum continuous distributed at the light-emitting window place of I integrating sphere (3), incide continuous tinting system (4) then, through attenuating plate (5) decay, incident light after will being decayed by colour filter base plate (6) is divided into the three beams primaries, passing through ruddiness light barrier (7), the effect of green glow light barrier (8) and blue light light barrier (9), change the logical accordingly light area ratio of three beams primaries, promptly regulate the flux ratio of three beams primaries, thereby change the color tristimulus values of continuous tinting system emergent light; After the three beams primaries enters additive colo(u)r system (10) from the light inlet of II integrating sphere (11), in II integrating sphere (11) through repeatedly reflection, at last at the uniform area light source of the light-emitting window output particular color of II integrating sphere (11).
As shown in Figure 2, be used to produce the device of the continuously adjustable uniform area light source of color, its method of operating is:
At first, open the power supply of halogen tungsten lamp light source (2), light halogen tungsten lamp and preheating a few minutes, make halogen tungsten lamp luminous stable.Halogen tungsten lamp light source (2) and I integrating sphere (3) are formed uniform area light source, produce the even emergent light of spectrum continuous distributed.
Shine continuous tinting system (4) with uniform area light source again.Respectively the line of attenuating plate (5), ruddiness light barrier (7), green glow light barrier (8), blue light light barrier (9) is alignd with the line of colour filter base plate (6) respectively.On the fixedly trim ring of attenuating plate (5) and other three light barriers line is arranged, when their line with during the line of colour filter base plate (6) alignment, lighttight part just partially overlaps (as shown in Figure 2) with being in the light of colour filter base plate (6) on optical axis direction on each light barrier, in the present embodiment, the logical light area of three kinds of color of light all is that central angle is 60 ° fan-shaped.
Clockwise rotate attenuating plate (5), colour filter base plate (6) and light barrier immobilize, and at this moment, the bore of three kinds of logical light of coloured light will change simultaneously, thereby the luminous flux of three kinds of coloured light also changes thereupon.Along with the rotation of attenuating plate (5), the emergent light intensity of tinting system will reduce gradually continuously.
Green glow light barrier (8), blue light light barrier (9), attenuating plate (5) and colour filter base plate (6) maintain static, and rotate counterclockwise the ruddiness light barrier, and this moment, the clear aperture of ruddiness reduced, and the luminous flux of ruddiness also reduces thereupon, its corresponding spatial distribution
Also will reduce, by the spectral tristimulus value computing formula:
The X values will reduce, and the luminous flux of green glow, blue light remains unchanged, thereby realize changing separately the purpose of R values.In the formula, λ is an optical wavelength,
Be the standard colorimetric observer, k is a normalization output, can be with reference to " modern color technical principle and application " book of publishing house of Beijing Institute of Technology publication about spectral tristimulus value.
In like manner, can distinguish the angle of regulating green glow light barrier (8), blue light light barrier (9) separately, thereby change green glow, the corresponding Y values of blue light, Z values, method is the same.Three kinds of color of light are independent mutually, can regulate corresponding X, Y, Z values simultaneously.
Then, the emergent light of continuous tinting system (4) is incided the light inlet of II integrating sphere (11).Tinting system (4) emergent light is the separate ruddiness of three beams, green glow, blue light continuously, this three-beam evenly is mixed into the light of particular color through reflection in II integrating sphere (11), form the uniform area light source of particular color in the exit of II integrating sphere (11).
In the present embodiment, can further use the uniform area light source with particular color that this device forms: spectrographic detection head (15) will collect to such an extent that the light of II integrating sphere (11) is transferred to spectrometer (17) by optical fiber (16), utilize spectrometer can monitor and monitor the spectral information that the II integrating sphere is interior in real time.
At last, the uniform area light source irradiation graticle (13) with the II integrating sphere produces produces specific color pattern.Regulate the distance of lens (14) and graticle (13), graticle is just placed on the focal plane of lens (14), thereby make the particular color pattern of graticle (13) image in the infinity.
This embodiment has realized being used to produce the device of the continuously adjustable uniform area light source of color by a series of measure, compares with other method, has that color is adjustable continuously, power output is big, simple in structure, a advantage that cost is low.
Cardinal principle is, the continuous tinting system of even light uniform irradiation by the uniform area light source outgoing, by regulating the axle center anglec of rotation of attenuating plate and colour filter base plate, can regulate the logical light area of ruddiness, green glow, blue light simultaneously, thereby reach the purpose of regulating luminous flux; By regulating the angle of ruddiness light barrier and colour filter base plate, can regulate the logical light area of ruddiness, in like manner can regulate the logical light area of green glow and blue light; The logical light area of regulating three kinds of coloured light respectively just can reach the purpose of the flux ratio of regulating three kinds of coloured light; After three kinds of coloured light of continuous tinting system output are evenly mixed by the II integrating sphere, just can export the uniform area light source of particular color.
The device that is used to produce the continuously adjustable uniform area light source of color of the present invention, during application, gather in real time light in the II integrating sphere by the spectrographic detection head, and transport light to spectrometer, by the spectrometer spectral information in the monitoring II integrating sphere in real time by optical fiber.
Below in conjunction with the accompanying drawings the specific embodiment of the present invention is described; but these explanations can not be understood that to have limited scope of the present invention; protection scope of the present invention is limited by the claims of enclosing, and any change on claim of the present invention basis all is protection scope of the present invention.
Claims (6)
1. a device that is used to produce the continuously adjustable uniform area light source of color is characterized in that: comprise uniform area light source (1), continuous tinting system (4) and additive colo(u)r system (10); Uniform area light source (1), continuous tinting system (4) and additive colo(u)r system (10) order are joined, wherein:
Uniform area light source (1) is made up of light source (2) and I integrating sphere (3); Tinting system (4) is made up of colour filter base plate (6), ruddiness light barrier (7), green glow light barrier (8), blue light light barrier (9) continuously, and colour filter base plate (6), ruddiness light barrier (7), green glow light barrier (8), blue light light barrier (9) are circle and have identical radius; Additive colo(u)r system (10) is made up of II integrating sphere (11);
The light inlet of light source (2) and I integrating sphere (3) is connected, and continuously tinting system (4) is positioned at the emergent ray direction of I integrating sphere (3), and the colour filter base plate (6) by wherein and the light-emitting window of I integrating sphere (3) join; Ruddiness light barrier (7), green glow light barrier (8), blue light light barrier (9) are arranged between the light inlet of colour filter base plate (6) and II integrating sphere (11); The precedence interchangeable that ruddiness light barrier (7), green glow light barrier (8), blue light light barrier (9) are put in continuous tinting system (4); The emergent ray direction of tinting system (4) is aimed at II integrating sphere (11) light inlet continuously;
Trim ring all is equipped with in the outer of colour filter base plate (6), ruddiness light barrier (7), green glow light barrier (8), blue light light barrier (9); Colour filter base plate (6), ruddiness light barrier (7), green glow light barrier (8), blue light light barrier (9) can rotate by the trim ring that rotates on it;
The axle center of colour filter base plate (6), ruddiness light barrier (7), green glow light barrier (8), blue light light barrier (9) point-blank;
Colour filter base plate (6) is divided into six sector regions, and wherein three is lighttight sector region, and they are respectively between any two and are used for redness, green, the blue sector region that filters, and is covered with redness, green, blue color filter respectively;
Have a lighttight sector region on the ruddiness light barrier (7), this sector region is not less than the sector region that is used to leach ruddiness on the colour filter base plate (6);
Have a lighttight sector region on the green glow light barrier (8), this sector region should be not less than the sector region that is used to leach green glow on the colour filter base plate (6);
Have a lighttight sector region on the blue light light barrier (9), this sector region should be not less than the sector region that is used to leach blue light on the colour filter base plate (6).
2. according to the described a kind of device that is used to produce the continuously adjustable uniform area light source of color of claim 1, it is characterized in that, continuously in the tinting system (4), between I integrating sphere (3) light-emitting window and II integrating sphere (11), can also set up an attenuating plate (5), it has identical radius with colour filter base plate (6), ruddiness light barrier (7), green glow light barrier (8), blue light light barrier (9), and the axle center of its axle center and colour filter base plate (6), ruddiness light barrier (7), green glow light barrier (8), blue light light barrier (9) point-blank;
Attenuating plate (5) can be the even attenuator of a circle, also can adopt and colour filter base plate (6) identical construction, remove three in colour filter base plate (6) structure sector regions that are used for redness, green, blue optical filtering this moment, only keeps three lighttight sector regions on it;
Trim ring is equipped with in the outer of attenuating plate (5), rotates by the trim ring that rotates on it.
3. according to the described a kind of device that is used to produce the continuously adjustable uniform area light source of color of claim 2, it is characterized in that: as preferably, described attenuating plate (5) position is arranged between I integrating sphere (3) light-emitting window and the colour filter base plate (6).
4. according to the described a kind of device that is used to produce the continuously adjustable uniform area light source of color of claim 2, it is characterized in that: the sign that has the expression attenuation degree on the outer trim ring of attenuating plate (5).
5. according to the described a kind of device that is used to produce the continuously adjustable uniform area light source of color of claim 1, it is characterized in that: the sign that has the logical light area of expression on the outer trim ring of colour filter base plate (6), ruddiness light barrier (7), green glow light barrier (8), blue light light barrier (9).
6. according to the described a kind of device that is used to produce the continuously adjustable uniform area light source of color of claim 1, it is characterized in that: the total interface place should guarantee not light leak in this device.
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| CN102657510A (en) * | 2012-05-04 | 2012-09-12 | 中国计量科学研究院 | Device for generating observation target with illumination and color |
| CN102705782A (en) * | 2012-05-04 | 2012-10-03 | 北京理工大学 | Continuous color matching device for large color gamut |
| CN103398836A (en) * | 2013-08-16 | 2013-11-20 | 上海集成电路研发中心有限公司 | Photoelectric test system for photoelectric conversion device |
| CN103672749A (en) * | 2012-09-13 | 2014-03-26 | 深圳市海洋王照明工程有限公司 | Lamp and light distribution assembly of lamp |
| CN106090700A (en) * | 2016-06-06 | 2016-11-09 | 北京理工大学 | Super large subtended angle multispectral lambertian lighting source |
| CN107101173A (en) * | 2017-05-31 | 2017-08-29 | 中山市风华稀柠照明设计有限公司 | A kind of three primary colors variable color lamp |
| CN110056842A (en) * | 2019-06-06 | 2019-07-26 | 中国科学院长春光学精密机械与物理研究所 | A kind of single star simulator and its light source |
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| CN102657510B (en) * | 2012-05-04 | 2014-12-03 | 中国计量科学研究院 | Device for generating observation target with illumination and color |
| CN103672749A (en) * | 2012-09-13 | 2014-03-26 | 深圳市海洋王照明工程有限公司 | Lamp and light distribution assembly of lamp |
| CN103398836A (en) * | 2013-08-16 | 2013-11-20 | 上海集成电路研发中心有限公司 | Photoelectric test system for photoelectric conversion device |
| CN106090700A (en) * | 2016-06-06 | 2016-11-09 | 北京理工大学 | Super large subtended angle multispectral lambertian lighting source |
| CN107101173A (en) * | 2017-05-31 | 2017-08-29 | 中山市风华稀柠照明设计有限公司 | A kind of three primary colors variable color lamp |
| CN110056842A (en) * | 2019-06-06 | 2019-07-26 | 中国科学院长春光学精密机械与物理研究所 | A kind of single star simulator and its light source |
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| CN101865412B (en) | 2011-11-09 |
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