CN104748848B - LED-based intelligent color assessment cabinet - Google Patents
LED-based intelligent color assessment cabinet Download PDFInfo
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- CN104748848B CN104748848B CN201510172624.6A CN201510172624A CN104748848B CN 104748848 B CN104748848 B CN 104748848B CN 201510172624 A CN201510172624 A CN 201510172624A CN 104748848 B CN104748848 B CN 104748848B
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Abstract
The invention discloses an LED-based intelligent color assessment cabinet. A combination of an LED light source and a tungsten lamp is used as a light source for color assessment lighting, and the color assessment light source more excellent in coloring characteristic is obtained by means of combination of spectral power distribution characteristics of the LED light source and the tungsten lamp; since a color filter is arranged in front of the tungsten lamp, more optimized spectral power distribution is obtained to further optimize the coloring characteristics of the color assessment light source. By the aid of light-emitting relative spectral powder distribution data, prestored in a memory unit under drive of different currents or pulse widths, of the LED light source or the tungsten lamp, all types of standard lighting sources can be simulated more accurately, and color assessment realness and reliability are improved.
Description
【Technical field】
The present invention relates to color detection field, and in particular to a kind of VERIVIDE COLOR ASSESMENT CABINET.
【Background technology】
In modern industry, there is higher and higher requirement to like product consistency of colour and accuracy.With section
The continuous development of technology, the inspection to product colour according under pass through naked eyes to tested in normal light from reviewer is initially relied on
Sample and standard color comparison card are compared, and to differentiate the misalignment between sample and standard color comparison card, gradually develop into
Sample and standard colorimetric are placed in the colour assessment apparatus of built-in standard light source and are tested, standard light source is usually used in
Simulate the artificial light sources under various ambient lights.The surface reflection colour of different objects matches, but they are reflected
Spectral power distribution is different, and this phenomenon is referred to as metamerism (metamerism).When little in light source light spectrum or scarce
During the main ripple reflected under reference light source by weary object, color can be made to produce obvious aberration, and this can cause metamerism
Occur, so as to cause the non-at-scene acquisition such as production plant or laboratory and object face under the light source lighting under these specific environments
The inconsistent result of color, affects the reliability of product colour inspection in the industry such as weaving, printing and coating.Existed using light box
Carry out evaluation to occur with the effectively phenomenon for preventing metamerism under various criterion light source to the color of object.
In order to reduce the risk that metamerism phenomenon is brought to color evaluation reliability, notification number is 8592748 B2 of US
Patent disclose and a kind of be used to simulate the colorimetric lamp box of spectrum of sunlight based on different-colour LED light source.Though LED light source has rich
Rich spectrum, but have the shortcomings that to have that color rendering index is low, spectrum is imperfect, the accompanying drawing 5.1 be given from the patent is (such as Fig. 1 institutes
Show) clearly can find out, the whole structure of simulation is not very good, and especially after 630nm, the difference of wave band is more bright
It is aobvious, fail to realize high-quality simulation spectrum of sunlight.Notification number discloses one kind for the patent of 101883971 A of CN and is based on
The colour assessment apparatus of fluorescent lamp and multiple light emitting diodes, short life, color drift with the time be substantially fluorescent lamp shortcoming it
One, therefore the invention compensates spectrum change of fluorescent lamp when aging using LED light source, but due to the luminescent spectrum of fluorescent lamp
It is non-adjustable, and have larger gap with standard light source, so this kind of compensated light source still can not implement color comparison well.
【The content of the invention】
For above-mentioned the deficiencies in the prior art, the present invention is intended to provide a kind of adopt LED light source and tengsten lamp combination conduct
The intelligent VERIVIDE COLOR ASSESMENT CABINET of illumination test light source.By combining, using both spectral power distribution characteristics, coordinate light source control
Unit adjusts light source luminescent power and switch, with more preferable mock standard light source；Simultaneously can also be according to the difference of testing requirement, mould
Intend different types of standard light source, shades of colour can be widely suitable for and compare occasion.
The LED-based intelligent VERIVIDE COLOR ASSESMENT CABINET of one kind of the present invention is achieved through the following technical solutions：A kind of base
In the intelligent VERIVIDE COLOR ASSESMENT CABINET of LED, it is characterised in that including casing, light sources and light source control unit, described light sources include
LED light source and tengsten lamp, described light source control unit control light sources send the light of specified spectrum.
In the last few years with the continuous development of semiconductor technology, LED is by its specular removal, little color tolerance, energy-conserving and environment-protective etc.
Advantage is widely used in various lighting fields.But still there are many defects (such as Fig. 2 institutes in the spectrum that LED light source sends
Show), no matter colour temperature height, LED light spectrum in the whole visible-range not exclusively and skewness, for example, in 450nm or
Near 600nm, its spectral response is too high, and its light on the wave band near less than 420nm or 480nm or more than 700nm
Spectrum response is too low, and in that is to say LED light spectrum, blue light ingredient is more, and the composition of HONGGUANG and green glow is low.Tengsten lamp is often considered preferable
Reference light source, good with color rendering propertiess, the features such as continuously light-adjustable (as shown in Figure 2), its spectral power distribution is in red range
The interior spectral power distribution much larger than royal purple wave band.High-quality can not simulate when both are separately as detection illumination light source
Daylight, have impact on the application and development in both each comfortable color evaluation fields.The present invention is by combining, using both spectrum work(
Rate distribution character, can obtain the more equally distributed spectral power distribution in visible light wave range.
It is pointed out that tengsten lamp here can be electric filament lamp or halogen tungsten lamp；Described LED light source is included at least
One LED white light source and one or the monochromatic LED of the above, monochromatic LED is for the group to LED white light sources and tungsten filament lamp sources
Closing light source carries out light filling, preferably to simulate various detection illumination light sources, improves the reliability and verity of colorimetric.
The present invention after LED light source combine with tengsten lamp and meanwhile light, using light source control unit control light sources
In each arbitrary source it is luminous, control the strong and weak and switch of light source luminescent, by phase complementary light, after mixing, send specified spectrum
Light, the light is respectively provided with stronger spectral power distribution in each wave band, and then can obtain and have higher development properties
Light source, further improve object color visual evaluation reliability, effectively overcome metamerism phenomenon.
The present invention also further can be limited and perfect by the following technical programs：
As a kind of technical scheme, including light filter, before the tengsten lamp in the light sources, light filter is set.With colour temperature
As a example by the light sources of the cool white LED light source and electric filament lamp composition for 6500k, colour temperature is the cool white LED light source of 6500k in 520nm-
Spectral response in the wavelength band of 780nm is weaker, and spectral response of the electric filament lamp in respective range is stronger, by electric filament lamp
The front light filter for arranging correspondence wave band, filters the light source of incandescent light source wave band before 520nm, so that the group after filtering
Closing light source is respectively provided with stronger spectral response in the range of whole visible light wave range；Simultaneously can also be monochromatic by adding multiple correspondences
LED light source carries out light filling to combined light source, to reach the effect for further improving combined light source development properties and simulation.Pass through
Being applied in combination for LED light source, tengsten lamp and light filter, present invention can be suitably applied to simulate various types of standard light sources, such as
D65, standard A light source etc..
Used as a kind of technical scheme, described light source control unit includes multiple independent program control driving subelements, described
Multiple independent program control driving subelements are operated alone the unlatching of each arbitrary source of light sources, strong and weak tune of closing and light
Section.Light source under different luminous intensities have different spectral distribution properties, change light source luminous intensity be capable of achieving it is right
The adjustment of light source light spectrum power distribution.
As a kind of technical scheme, the LED light source of described light sources under the control of light source control unit, in light sources
Simultaneously luminous with tengsten lamp, mixing sends the light of specified spectrum.As it was noted above, LED light source and tungsten filament lamp sources are used as inspection
Surveying the independent luminous-circuit standard light source of illumination light source has its respective shortcoming, and both are cleverly combined, can be obtained by the present invention
Color developing effect more preferably, the more excellent light source of analog result.
As a kind of technical scheme, the top scattering device in the casing of the LED light source and tengsten lamp in described light sources,
LED light source and tengsten lamp in light sources can be arranged in a variety of forms：For example, LED light source is spaced two-by-two, is gathered with tengsten lamp
Arrangement；Or the tengsten lamp of equal amount of arranging every several LED light sources.
As a kind of technical scheme, described light source control unit by adjust size of current or adjusting pulsewidth size or
Person's controlling switch realizes the switch to LED light source or tengsten lamp in light sources and strong and weak regulation.By taking LED light source as an example, LED
Output characteristics and its electrical quantity have it is close contact, by change electrical quantity be capable of achieving it is luminous to LED light source strong and weak
Adjust, and then change luminescent spectrum power distribution；PWM technologies reach the side of adjustment voltage, electric current by adjusting pulse duty factor
Method, indirectly changes luminescent spectrum power distribution.Light source control unit by said method control light source in light source switch and
It is strong and weak to adjust, change then combined light source spectral power distribution, realization sends the purpose of specified spectrum.
As a kind of technical scheme, also including intelligent processor and mnemon, described mnemon internal memory contains light
Luminous relative spectral power distributions data of the LED light source and tengsten lamp in the group of source in the case where different electric currents or pulsewidth drive, intelligence
Energy processor is distributed according to specified luminescent spectrum by calling the data in mnemon, Jing light source control lists after parsing, process
Unit controls the luminous of LED light source and tengsten lamp in light sources.Intelligent processor is by calling the light source of mnemon memory storage
Luminous relative spectral power distributions data of the LED light source and tengsten lamp in group in the case where different electric currents or pulsewidth drive, compare
Specified luminescent spectrum, selects to be distributed close or consistent light with specified luminescent spectrum by default light source option program after parsing
The type and luminous power of LED light source and tengsten lamp needed for spectrum correspondence, and Regulate signal is fed back to into light source control unit, light
Switch and luminous power of the source control unit according to corresponding light source in the signal control light sources for receiving.
Preferably, also including the even tabula rasa of diffusing transmission, the even tabula rasa of described diffusing transmission is arranged on the lower section of light sources, described
The outgoing after the even light of the even tabula rasa of diffusing transmission and mixed light of the light sent by light sources.A part of light in the light that light sources send
The even tabula rasa of line Jing diffusing transmissions is directly projected on sample；Another part light is first to be overflow thoroughly Jing after the even tabula rasa reflection of diffusing transmission
Penetrate mix in the space that even tabula rasa is constituted with casing upper wall, the even tabula rasa of Jing diffusing transmissions is transmitted on sample again after even light.
Preferably, highly-reflective coating is scribbled above casing, the light Jing highly-reflective coatings sent by the light sources
With outgoing after the even light of the even tabula rasa of diffusing transmission and mixed light.Due to scribbling high reflection layer above now casing, light is inciding casing
Can be with space of the higher reflective to the even tabula rasa of diffusing transmission with casing upper wall composition, so that in the space behind top
Mixed light evenly rear outgoing.
In sum, the present invention adopts LED light source and tengsten lamp combination as detection illumination light source, using both light
Spectral power distributions property combination obtains the more excellent test light source of development properties；By light filter is arranged before tengsten lamp, combination
More excellent spectral power distribution is obtained, further optimizes the development properties of light source.Using the LED being stored in advance in mnemon
Or luminous relative spectral power distributions data of the tengsten lamp in the case where different electric currents or pulsewidth drive, can be more accurate and intelligent
All kinds of standard light sources are simulated, reliability and verity that color is compared is improved.
【Description of the drawings】
Accompanying drawing 1 is the design sketch that D50 light sources are simulated using LED light source；
Accompanying drawing 2 is the spectral power distribution of different-colour LED white light sources and standard A light source；
Accompanying drawing 3 is the spectral power of the spectral power distribution in embodiment 1 Jing after light modulation and D65 standard illuminants light sources
Distribution curve according to figure；
Accompanying drawing 4 is the schematic diagram of embodiment 2；
2-1-LED light sources；2-2- tengsten lamps.
【Specific embodiment】
Embodiment 1
A kind of LED-based intelligent VERIVIDE COLOR ASSESMENT CABINET, including casing, light sources and light source control list are disclosed in the present embodiment
Unit and light filter, light sources include that LED light source 2-1 and tengsten lamp 2-2, wherein LED light source 2-1 include that a colour temperature is
The cool white LED light source and several monochromatic LEDs (being specifically shown in Table 1) of 6500k, is electric filament lamp used herein of tengsten lamp 2-2.White
Light filter is set before vehement lamp, and light filter filters the light source of electric filament lamp wavelength band before 520nm.In light source control unit each
Independent program control driving subelement, respectively, individually adjusts the luminous power of LED white light sources, several monochromatic LEDs and electric filament lamp
And switch.
In the present embodiment, the light modulation coefficient of LED white light sources is 0.6, and the light modulation coefficient of incandescent light source is 0.6, it is concrete each
The light modulation coefficient situation of monochromatic LED is shown in Table 1.Here light modulation coefficient can be using the maximum of spectral power distribution as base
Standard, can also be that the present embodiment uses the former using the integrated value of whole visible light wave range spectral power distribution as benchmark.
Fig. 3 is for the spectral power distribution Jing after light modulation with the spectral power distribution of D65 standard illuminants light sources according to figure.
Monochromatic LED light source used by 1 the present embodiment of table and its respective light modulation coefficient
| Dominant wavelength | Light modulation coefficient | Dominant wavelength | Light modulation coefficient |
| 365nm | 0.4 | 425nm | 0.4 |
| 375nm | 0.4 | 435nm | 0.4 |
| 385nm | 0.4 | 475nm | 0.3 |
| 395nm | 0.4 | 495nm | 0.55 |
| 405nm | 0.4 | 515nm | 0.3 |
| 415nm | 0.4 |
Embodiment 2
As shown in figure 4, present embodiment discloses in a kind of LED-based intelligent VERIVIDE COLOR ASSESMENT CABINET light sources arrangement mode.
Wherein LED light source 2-1 and tengsten lamp 2-2 is spaced two-by-two, arrangement of gathering；Or every 2 LED light source 2-1 arrangement equal amounts
Tengsten lamp 2-2 light sources so that lamp box distribution of light sources everywhere is more uniformly distributed.
It is emphasized that the above is only presently preferred embodiments of the present invention, not make any formal to the present invention
Restriction, every technical spirit any simple modification, equivalent variations and modification that above example is made according to the present invention,
Still fall within the range of technical solution of the present invention.
Claims (8)
1. a kind of LED-based intelligent VERIVIDE COLOR ASSESMENT CABINET, it is characterised in that including casing (1), light sources (2), light source control unit
(3), intelligent processor (5) and mnemon (6)；Described light sources (2) include LED light source (2-1) and tengsten lamp (2-2),
Described light source control unit (3) control light sources (2) sends the light of specified spectrum；Described mnemon (6) memory storage
There is LED light source (2-1) and tengsten lamp (2-2) in light sources (2) the luminous relative spectral power under different control signals point
Cloth data, intelligent processor (5) are distributed according to specified luminescent spectrum by calling the data in mnemon (6), parsing, place
After reason, Jing light source control units (3) control the luminous of LED light source (2-1) and tengsten lamp (2-2) in light sources (2).
2. LED-based intelligent VERIVIDE COLOR ASSESMENT CABINET as claimed in claim 1 a kind of, it is characterised in that including light filter (4),
Light filter (4) is set before the tengsten lamp (2-2) in the light sources (2).
3. as claimed in claim 1 a kind of LED-based intelligent VERIVIDE COLOR ASSESMENT CABINET, it is characterised in that described light source control list
First (3), including multiple independent program control driving subelements, the plurality of independent program control driving subelement is operated alone light sources
(2) unlatching of each arbitrary source, strong and weak regulation of closing and light.
4. a kind of LED-based intelligent VERIVIDE COLOR ASSESMENT CABINET as described in claim 1,2 or 3, it is characterised in that described light sources
(2) under the control of light source control unit (3), LED light source (2-1) and tengsten lamp (2-2) in light sources (2) while luminous,
Mixing sends the light of specified spectrum.
5. LED-based intelligent VERIVIDE COLOR ASSESMENT CABINET as claimed in claim 1 a kind of, it is characterised in that in described light sources (2)
LED light source (2-1) and tengsten lamp (2-2) the top scattering device in the casing (1).
6. a kind of LED-based intelligent VERIVIDE COLOR ASSESMENT CABINET as described in claim 1 or 3, it is characterised in that described light source control
Unit (3) is realized to the LED light source in light sources (2) by adjusting size of current or adjusting pulsewidth size or controlling switch
(2-1) or tengsten lamp (2-2) switch and strong and weak adjust.
7. LED-based intelligent VERIVIDE COLOR ASSESMENT CABINET as claimed in claim 1 a kind of, it is characterised in that including the even tabula rasa of diffusing transmission
(7), the even tabula rasa of described diffusing transmission (7) is arranged on the lower section of light sources (2), and the light sent by the light sources (2) is passed through
Outgoing after the even light of the even tabula rasa of diffusing transmission (7) and mixed light.
8. a kind of LED-based intelligent VERIVIDE COLOR ASSESMENT CABINET as described in claim 1 or 7, it is characterised in that the top of casing (1)
Highly-reflective coating is scribbled, light Jing highly-reflective coatings that the light sources (2) are sent and the even light of the even tabula rasa of diffusing transmission (7) and mixed
Outgoing after light.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510172624.6A CN104748848B (en) | 2015-04-13 | 2015-04-13 | LED-based intelligent color assessment cabinet |
| PCT/CN2016/072280 WO2016165448A1 (en) | 2015-04-13 | 2016-01-27 | Led-based smart color viewing light booth |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510172624.6A CN104748848B (en) | 2015-04-13 | 2015-04-13 | LED-based intelligent color assessment cabinet |
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| CN104748848B true CN104748848B (en) | 2017-04-12 |
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Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2016165448A1 (en) * | 2015-04-13 | 2016-10-20 | 杭州远方光电信息股份有限公司 | Led-based smart color viewing light booth |
| CN105651386B (en) * | 2016-03-04 | 2018-12-11 | 温州佳易仪器有限公司 | A method of color measurement being carried out to color observation case using standard sources |
| CN105572055A (en) * | 2016-03-04 | 2016-05-11 | 温州佳易仪器有限公司 | Non-contact type color detecting method based on digital image technology |
| CN105588639B (en) * | 2016-03-04 | 2018-03-23 | 温州佳易仪器有限公司 | A kind of standard sources is to color inspection box |
| CN105938016A (en) * | 2016-06-02 | 2016-09-14 | 杭州远方光电信息股份有限公司 | Color measurement apparatus |
| JP7154313B2 (en) * | 2018-12-26 | 2022-10-17 | 京セラ株式会社 | Spectrum control device and spectrum control program |
| CN111050444B (en) * | 2019-02-01 | 2021-04-09 | 靳鹏 | Method for simulating CIE standard illuminant by using multi-channel LED and illumination system |
| CN113390831B (en) * | 2021-05-20 | 2023-03-24 | 常州千明智能照明科技有限公司 | Full-appearance bidirectional reflection distribution characteristic measuring method |
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| CN1571610A (en) * | 2003-02-06 | 2005-01-26 | 电灯专利信托有限公司 | Circuit arrangement and method for an illumination device having settable color and brightness |
| CN201464043U (en) * | 2009-06-29 | 2010-05-12 | 杭州立威化工涂料有限公司 | Dark box specially used for matching color of paint |
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