CN115144071A - Ambient light simulation device capable of adjusting color temperature and illumination - Google Patents
Ambient light simulation device capable of adjusting color temperature and illumination Download PDFInfo
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- CN115144071A CN115144071A CN202210765636.XA CN202210765636A CN115144071A CN 115144071 A CN115144071 A CN 115144071A CN 202210765636 A CN202210765636 A CN 202210765636A CN 115144071 A CN115144071 A CN 115144071A
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- 238000005286 illumination Methods 0.000 title claims abstract description 45
- 238000004088 simulation Methods 0.000 title claims abstract description 19
- 230000003287 optical effect Effects 0.000 claims abstract description 28
- 238000001228 spectrum Methods 0.000 claims abstract description 21
- 229910052736 halogen Inorganic materials 0.000 claims abstract description 16
- 150000002367 halogens Chemical class 0.000 claims abstract description 16
- 238000002310 reflectometry Methods 0.000 claims description 14
- 239000013307 optical fiber Substances 0.000 claims description 7
- 238000001514 detection method Methods 0.000 claims description 3
- 238000012360 testing method Methods 0.000 description 9
- 238000005259 measurement Methods 0.000 description 6
- 238000000034 method Methods 0.000 description 3
- 230000003595 spectral effect Effects 0.000 description 3
- 238000006243 chemical reaction Methods 0.000 description 2
- 239000011248 coating agent Substances 0.000 description 2
- 238000000576 coating method Methods 0.000 description 2
- 239000003086 colorant Substances 0.000 description 2
- 230000002708 enhancing effect Effects 0.000 description 2
- 230000007613 environmental effect Effects 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 230000003313 weakening effect Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 239000000523 sample Substances 0.000 description 1
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01J—MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRARED, VISIBLE OR ULTRAVIOLET LIGHT; COLORIMETRY; RADIATION PYROMETRY
- G01J1/00—Photometry, e.g. photographic exposure meter
- G01J1/02—Details
- G01J1/04—Optical or mechanical part supplementary adjustable parts
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01J—MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRARED, VISIBLE OR ULTRAVIOLET LIGHT; COLORIMETRY; RADIATION PYROMETRY
- G01J1/00—Photometry, e.g. photographic exposure meter
- G01J1/02—Details
- G01J1/04—Optical or mechanical part supplementary adjustable parts
- G01J1/0407—Optical elements not provided otherwise, e.g. manifolds, windows, holograms, gratings
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M11/00—Testing of optical apparatus; Testing structures by optical methods not otherwise provided for
- G01M11/02—Testing optical properties
- G01M11/0207—Details of measuring devices
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01J—MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRARED, VISIBLE OR ULTRAVIOLET LIGHT; COLORIMETRY; RADIATION PYROMETRY
- G01J1/00—Photometry, e.g. photographic exposure meter
- G01J1/02—Details
- G01J1/04—Optical or mechanical part supplementary adjustable parts
- G01J2001/0481—Preset integrating sphere or cavity
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B20/00—Energy efficient lighting technologies, e.g. halogen lamps or gas discharge lamps
- Y02B20/40—Control techniques providing energy savings, e.g. smart controller or presence detection
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Spectroscopy & Molecular Physics (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Spectrometry And Color Measurement (AREA)
Abstract
The invention provides an ambient light simulation device capable of adjusting color temperature and illumination, which can adjust color temperature and illumination according to requirements, so as to simulate ambient light and ensure that the simulation of the ambient light meets the requirement of a set numerical value. It includes: the standard integrating sphere comprises a sphere body, wherein the sphere body is provided with a plurality of light source fixing holes, a light outlet, an optical measuring instrument measuring port, a hole with a specific angle under illumination and a spectrum meter fixing hole; the first group of three-color light sources comprises a low-brightness red light source, a low-brightness green light source and a low-brightness blue light source; a second group of three-color light sources including a high-brightness red light source, a high-brightness green light source and a high-brightness blue light source; a halogen light source; a spectrum meter; and a programmable power supply.
Description
Technical Field
The invention relates to the technical field of ambient light simulation, in particular to an ambient light simulation device capable of adjusting color temperature and illumination.
Background
With the progress of the times and the development of technologies, the development of the display screen industry is faster and faster, and the demand is more and more, so that an optical characteristic testing device capable of simulating the sunlight and the ambient light to irradiate the screen under a certain angle and testing the specular reflectivity, the diffuse reflectivity, the brightness contrast, the ambient light contrast, the chromaticity parameters and the color gamut area under the ambient light, the numerical conversion of the reflectivity under different ambient lights and the like is urgently needed to be developed.
Disclosure of Invention
In view of the above problems, the present invention provides an ambient light simulation apparatus capable of adjusting color temperature and illuminance, which can adjust color temperature and illuminance as required to simulate ambient light and ensure that the simulation of ambient light meets the requirement of a set value.
An ambient light simulation apparatus capable of adjusting color temperature and illuminance, comprising:
the standard integrating sphere comprises a sphere body, wherein the sphere body is provided with a plurality of light source fixing holes, a light outlet, an optical measuring instrument measuring port, a hole with a specific angle under illumination and a spectrum meter fixing hole;
the first group of three-color light sources comprises a low-brightness red light source, a low-brightness green light source and a low-brightness blue light source;
a second group of three-color light sources including a high-brightness red light source, a high-brightness green light source and a high-brightness blue light source;
a halogen light source;
a spectral luminance meter;
and a programmable power supply;
the low-brightness red light source, the low-brightness green light source, the low-brightness blue light source, the high-brightness red light source, the high-brightness green light source, the high-brightness blue light source and the halogen light source are respectively inserted into the corresponding light source fixing holes and are arranged in the inner cavity of the ball body, the exposed ends of the low-brightness red light source, the low-brightness green light source, the low-brightness blue light source, the high-brightness red light source, the high-brightness green light source, the high-brightness blue light source and the halogen light source are respectively connected to the corresponding independent power output ends of the programmable power supply through corresponding wires, the detection end of the spectrum illuminometer is connected with one end of the optical fiber, and the other end of the optical fiber penetrates through the spectrum illuminometer fixing holes and then goes deep into the inner cavity of the ball body;
the programmable power supply outputs corresponding voltage and current through built-in software so as to independently control the adjustment of the low-brightness red lamp source, the low-brightness green lamp source, the low-brightness blue lamp source, the high-brightness red lamp source, the high-brightness green lamp source and the high-brightness blue lamp source in different color temperature ranges, and the programmable power supply outputs corresponding voltage and current to the halogen light source through the built-in software so as to control the illumination;
the spectrum luminance meter automatically measures the white picture brightness and the black picture brightness under the appointed lighting environment according to the color temperature and the illumination in the sphere body, calculates the contrast value under the environment illumination, and draws an illumination-contrast curve.
It is further characterized in that:
the outer convex hole of the light outlet is provided with a convex slope, the product to be measured covers an irradiation surface area formed by the convex slope, and light emitted by the opening with special illumination is emitted towards the surface of the product to be measured, reflected by the irradiation surface area on the surface of the product and measured by the optical measuring instrument through the optical measuring instrument measuring port to obtain the corresponding reflectivity;
a measuring standard included angle is formed between the axis of the received light beam formed by the measuring port and the irradiation surface area of the optical measuring instrument and the normal line of the irradiation surface area;
the opening under the illumination of the specific angle is used for emitting a light beam with a specific incident angle and corresponding illumination, and the light beam is covered by a plug under the unused state;
the measuring port of the optical measuring instrument is used for assembling the optical measuring instrument, capturing reflected light rays and being covered by a plug in a non-use state.
After the invention is adopted, the light sources of three colors of red, green and blue are utilized to be reflected for a plurality of times in the standard integrating sphere with a specific chemical coating and then are scattered in the inner cavity of the sphere body very uniformly, the light sources of three colors of red, green and blue are controlled by three independent power supplies respectively, and the halogen light source is controlled by the independent power supply.
Drawings
FIG. 1 is a schematic perspective view of the present invention;
FIG. 2 is a geometric view of an opening of a standard integrating sphere under specific angle illumination, at a measurement port and a light inlet of the invention; the names corresponding to the numbers in the figure are as follows:
a standard integrating sphere 1, a low-brightness red light source 2, a low-brightness green light source 3, a low-brightness blue light source 4, a spectrum luminance meter 5, an optical fiber 6, a program control power supply 7, a high-brightness red light source 8, a high-brightness green light source 9 the device comprises a high-brightness blue lamp source 10, a halogen light source 11, an opening 12 under illumination of a specific angle, an optical measuring instrument measuring port 13, a light outlet 14, a product to be measured 15, a light source fixing hole 16, a light source baffle 17 and a spectrum luminance meter fixing hole 18.
Detailed Description
An ambient light simulation device with adjustable color temperature and illumination intensity is shown in fig. 1 and fig. 2, and comprises a standard integrating sphere 1, a first group of three-color light sources, a second group of three-color light sources, a halogen light source 11, a spectrum luminance meter 5 and a programmable power supply 7; the standard integrating sphere 1 comprises a sphere body, wherein the sphere body is provided with a plurality of light source fixing holes 16, a light outlet 14, an optical measuring instrument measuring port 13, an opening 12 under illumination of a specific angle and a spectrum meter fixing hole 18; the first group of three-color light sources comprises a low-brightness red light source 2, a low-brightness green light source 3 and a low-brightness blue light source 4; the second group of three-color light sources comprise a high-brightness red light source 8, a high-brightness green light source 9 and a high-brightness blue light source 10;
the low-brightness red light source 2, the low-brightness green light source 3, the low-brightness blue light source 4, the high-brightness red light source 8, the high-brightness green light source 9, the high-brightness blue light source 10 and the halogen light source 11 are respectively inserted into the corresponding light source fixing holes 16, and the light sources are arranged in the inner cavity of the ball body, the exposed ends of the low-brightness red light source 2, the low-brightness green light source 3, the low-brightness blue light source 4, the high-brightness red light source 8, the high-brightness green light source 9, the high-brightness blue light source 10 and the halogen light source 11 are respectively connected to the corresponding independent power output ends of the programmable power supply 7 through corresponding wires, the detection end of the spectrum luminance meter 5 is connected with one end of the optical fiber 6, and the other end of the optical fiber 6 penetrates through the spectrum luminance meter fixing holes 18 and then goes deep into the inner cavity of the ball body;
the programmable power supply 7 outputs corresponding voltage and current through built-in software so as to independently control the low-brightness red lamp source 2, the low-brightness green lamp source 3, the low-brightness blue lamp source 4, the high-brightness red lamp source 8, the high-brightness green lamp source 9 and the high-brightness blue lamp source 10 to be adjusted in different color temperature ranges, and the programmable power supply 7 outputs corresponding voltage and current to the halogen light source 11 through built-in software so as to control the illumination;
the spectral luminance meter 5 automatically measures the white picture brightness and the black picture brightness in the designated lighting environment according to the color temperature and the illumination in the sphere body, calculates the contrast value under the ambient illumination, and draws an illumination-contrast curve.
During the concrete implementation, every light source still is provided with light source baffle 17 on being located the emergent ray of the emergent light of the inside of ball body for light is reflected the inner wall of ball body and is fully reflected, scatters.
The convex hole of the light outlet 14 is provided with a convex slope, the product 15 to be measured covers an irradiation surface area formed by the convex slope, and the light emitted from the open hole with specific angle illumination is emitted towards the surface of the product 15 to be measured, reflected by the irradiation surface area on the surface of the product and measured by the optical measuring instrument measuring port 13 through the optical measuring instrument to obtain the corresponding reflectivity;
a measurement standard included angle is formed between the axis of the received light beam formed by the measurement port 13 of the optical measuring instrument and the irradiation surface area and the normal line of the irradiation surface area, and the measurement standard included angle in the specific embodiment is 8 degrees;
the opening 12 under the illumination of the specific angle is used for injecting a light beam with the specific injection angle and the corresponding illumination, and the light beam is covered by a plug in a non-use state;
the optical measuring device measuring opening 13 is used for assembling the optical measuring device, for capturing reflected light, and it is plugged in the non-use state.
The working principle is as follows: a group of red, green and blue light sources adopting three low-brightness ranges are placed in a standard integrating sphere, a programmable power supply is used for carrying out output control on voltage and current, a spectrum irradiance meter is used for reading color temperature and illumination, software is adjusted according to the color temperature and illumination required by user setting and an actual numerical value read by an instrument, the color temperature can be reduced by a mode of enhancing blue light and weakening red light, the color temperature can be increased by a mode of enhancing red light and weakening blue light, and the adjustment of the brightness range can be realized by controlling the output of the whole voltage and current; in order to meet the requirement of environment brightness in a larger range, another group of red, green and blue lamp sources adopting three high-brightness ranges are also arranged on the integrating sphere, and the output control of voltage and current is carried out by the programmable power supply to realize the adjustment of different color temperatures in the high-brightness ranges; the optical characteristic testing device can simulate sunlight and ambient light to irradiate a screen under a certain angle, and test the specular reflectivity, the diffuse reflectivity, the brightness contrast, the ambient light contrast, the chromaticity parameters and the color gamut area under the ambient light, the reflectivity numerical conversion under different ambient light and the like.
The current and voltage output values of all light sources are adjusted through the built-in software of a set program control power supply through the numerical feedback of a spectrum illuminometer, the light source spectrum, the appointed color temperature and an appointed group of illuminance values set by a user are measured, in addition, the software automatically adjusts the light sources to the next group of set values, an external optical measuring instrument automatically measures the white picture brightness and the black picture brightness in the appointed lighting environment through a measuring port of the optical measuring instrument, the contrast value under the environmental illumination is calculated, an illuminance-contrast curve graph is drawn, the WRGB values under different environmental color temperatures and the illuminance can be tested, and the color gamut coverage rate is calculated.
The three-color light sources of red, green and blue are utilized to be scattered inside the integrating sphere after being reflected for multiple times inside the integrating sphere with a specific chemical coating, the three-color light sources of red, green and blue are respectively controlled by three power supplies, and the voltage and the current of the power supplies for controlling the three-color light sources of red, green and blue can be respectively set according to different requirements of users. So that the color temperature and the illumination value conform to the values set by the customer.
The method is mainly applied to scene examples, diffuse reflection and specular reflection are measured, and the reflectivity characteristic parameter not only can simulate the reflectivity of pure illumination under the environment light, but also can measure the reflectivity under the environment light with different color temperature and illumination. The method mainly comprises the following steps:
description of specular reflection: the method comprises the following steps that A, a light source or a D65-like light source is installed at a hole under specific angle illumination, a product to be measured is placed at a light outlet, a measuring port of an optical measuring instrument is connected to the optical measuring instrument for measurement, so that the angle between the instrument and the product is equal to the angle between the light source and the product, the optical instrument performs brightness and spectrum measurement, the measured data and the measured ambient light value and the standard specular reflection plate data under the same condition are subjected to ratio, and therefore the specular reflectivity of the product to be measured under ambient light with different color temperature illuminations is obtained;
description of diffuse reflection: rotating an integrating sphere light source to a measuring position, then carrying out measuring operation in software, and testing part of tests under pure diffuse reflection ambient light according to IEC 62341-6-2 test standards; and partial tests need to be carried out under diffuse reflection ambient light mixed with specular reflection, and the measured ambient light numerical standard and the diffuse reflection plate data are compared, so that the diffuse reflectivity of the optical product to be measured under the ambient light with different color temperature and illumination intensities is obtained.
The relationship between the illumination and the color temperature and the size of the light source and the ball in the simulation device of the invention is as follows: high light level small balls, typically 8 inches, low light level large balls, typically 12 inches; the big ball has good uniformity, but the illumination is inversely proportional to the diameter of the ball, and the opening diameter of the ball is smaller than 1/3 of the diameter of the ball.
A halogen light source can be used for simulating an A light source and a light source with the color temperature of 6500K, the maximum illumination is 50000Lux, the light source control can be performed, a spectral irradiance meter testing probe is arranged in an integrating sphere and is used for measuring the illumination value of the light source in real time, and software is used for adjusting the current value of the light source in real time according to the illumination value so that the brightness (illumination) output of the light source is kept stable.
It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.
Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.
Claims (5)
1. An ambient light simulation apparatus capable of adjusting color temperature and illuminance, comprising:
the standard integrating sphere comprises a sphere body, wherein the sphere body is provided with a plurality of light source fixing holes, a light outlet, an optical measuring instrument measuring port, a hole with a specific angle under illumination and a spectrum meter fixing hole;
a first group of three-color light sources including a low-brightness red light source, a low-brightness green light source, and a low-brightness blue light source;
a second group of three-color light sources including a high-brightness red light source, a high-brightness green light source and a high-brightness blue light source;
a halogen light source;
a spectrum meter;
and a programmable power supply;
the low-brightness red light source, the low-brightness green light source, the low-brightness blue light source, the high-brightness red light source, the high-brightness green light source, the high-brightness blue light source and the halogen light source are respectively inserted into the corresponding light source fixing holes and are arranged in the inner cavity of the ball body, the exposed ends of the low-brightness red light source, the low-brightness green light source, the low-brightness blue light source, the high-brightness red light source, the high-brightness green light source, the high-brightness blue light source and the halogen light source are respectively connected to the corresponding independent power output ends of the programmable power supply through corresponding wires, the detection end of the spectrum illuminometer is connected with one end of the optical fiber, and the other end of the optical fiber penetrates through the spectrum illuminometer fixing holes and then goes deep into the inner cavity of the ball body;
the programmable power supply outputs corresponding voltage and current through built-in software so as to independently control the adjustment of the low-brightness red lamp source, the low-brightness green lamp source, the low-brightness blue lamp source, the high-brightness red lamp source, the high-brightness green lamp source and the high-brightness blue lamp source in different color temperature ranges, and the programmable power supply outputs corresponding voltage and current to the halogen light source through the built-in software so as to control the illumination;
the spectrum luminance meter automatically measures the white picture brightness and the black picture brightness under the appointed lighting environment according to the color temperature and the illumination in the sphere body, calculates the contrast value under the environment illumination, and draws an illumination-contrast curve.
2. The ambient light simulation apparatus of claim 1, wherein the ambient light simulation apparatus comprises: the outer convex hole of the light outlet is provided with a convex slope, the product to be measured covers an irradiation surface area formed by the convex slope, and light emitted by the opening with special illumination faces the surface of the product to be measured, is reflected by the irradiation surface area on the surface of the product and is measured by the optical measuring instrument measuring port through the optical measuring instrument to obtain the corresponding reflectivity.
3. The ambient light simulation apparatus capable of adjusting color temperature and illuminance according to claim 2, wherein: and a measuring standard included angle is formed between the axis of the received light beam formed by the measuring port and the irradiation surface area of the optical measuring instrument and the normal line of the irradiation surface area.
4. The ambient light simulation apparatus of claim 1, wherein the ambient light simulation apparatus comprises: the opening under the illumination of the specific angle is used for injecting a light beam with the specific incidence angle and the corresponding illumination, and the light beam is covered by the plug in a non-use state.
5. The ambient light simulation apparatus of claim 1, wherein the ambient light simulation apparatus comprises: the measuring port of the optical measuring instrument is used for assembling the optical measuring instrument, capturing reflected light and is covered by a plug in a non-use state.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210765636.XA CN115144071A (en) | 2022-07-01 | 2022-07-01 | Ambient light simulation device capable of adjusting color temperature and illumination |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202210765636.XA CN115144071A (en) | 2022-07-01 | 2022-07-01 | Ambient light simulation device capable of adjusting color temperature and illumination |
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| CN115144071A true CN115144071A (en) | 2022-10-04 |
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| CN202210765636.XA Pending CN115144071A (en) | 2022-07-01 | 2022-07-01 | Ambient light simulation device capable of adjusting color temperature and illumination |
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