CN203880619U - Device for increasing color rendering index of LED light source - Google Patents
Device for increasing color rendering index of LED light source Download PDFInfo
- Publication number
- CN203880619U CN203880619U CN201420221225.5U CN201420221225U CN203880619U CN 203880619 U CN203880619 U CN 203880619U CN 201420221225 U CN201420221225 U CN 201420221225U CN 203880619 U CN203880619 U CN 203880619U
- Authority
- CN
- China
- Prior art keywords
- light source
- light
- rendering index
- luminous
- colour rendering
- 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 - Lifetime
Links
- 238000009877 rendering Methods 0.000 title claims abstract description 58
- 230000003287 optical effect Effects 0.000 claims description 60
- 238000000926 separation method Methods 0.000 claims description 18
- 239000000463 material Substances 0.000 claims description 9
- 238000003491 array Methods 0.000 claims description 8
- 238000002310 reflectometry Methods 0.000 claims description 7
- 238000012545 processing Methods 0.000 claims description 3
- 238000001228 spectrum Methods 0.000 abstract description 38
- 239000000843 powder Substances 0.000 abstract description 11
- 230000000694 effects Effects 0.000 abstract description 5
- 239000002344 surface layer Substances 0.000 abstract 2
- 239000003086 colorant Substances 0.000 description 25
- 230000003595 spectral effect Effects 0.000 description 13
- 241001025261 Neoraja caerulea Species 0.000 description 8
- 239000000203 mixture Substances 0.000 description 8
- 238000005516 engineering process Methods 0.000 description 6
- 238000001914 filtration Methods 0.000 description 6
- 238000005286 illumination Methods 0.000 description 6
- 229920006395 saturated elastomer Polymers 0.000 description 6
- 230000008901 benefit Effects 0.000 description 5
- 238000013461 design Methods 0.000 description 5
- 230000004907 flux Effects 0.000 description 4
- 230000005540 biological transmission Effects 0.000 description 3
- 230000008859 change Effects 0.000 description 3
- 239000011248 coating agent Substances 0.000 description 3
- 238000000576 coating method Methods 0.000 description 3
- 230000001105 regulatory effect Effects 0.000 description 3
- 239000004065 semiconductor Substances 0.000 description 3
- 230000004075 alteration Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000013011 mating Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000005622 photoelectricity Effects 0.000 description 2
- 238000007493 shaping process Methods 0.000 description 2
- 238000013519 translation Methods 0.000 description 2
- 238000002834 transmittance Methods 0.000 description 2
- 241000220317 Rosa Species 0.000 description 1
- 230000001276 controlling effect Effects 0.000 description 1
- 238000012937 correction Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000004134 energy conservation Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000001915 proofreading effect Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 238000004088 simulation Methods 0.000 description 1
- 238000010792 warming Methods 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
- F21V9/00—Elements for modifying spectral properties, polarisation or intensity of the light emitted, e.g. filters
- F21V9/40—Elements for modifying spectral properties, polarisation or intensity of the light emitted, e.g. filters with provision for controlling spectral properties, e.g. colour, or intensity
- F21V9/45—Elements for modifying spectral properties, polarisation or intensity of the light emitted, e.g. filters with provision for controlling spectral properties, e.g. colour, or intensity by adjustment of photoluminescent elements
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
- F21S2/00—Systems of lighting devices, not provided for in main groups F21S4/00 - F21S10/00 or F21S19/00, e.g. of modular construction
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
- F21V17/00—Fastening of component parts of lighting devices, e.g. shades, globes, refractors, reflectors, filters, screens, grids or protective cages
- F21V17/10—Fastening of component parts of lighting devices, e.g. shades, globes, refractors, reflectors, filters, screens, grids or protective cages characterised by specific fastening means or way of fastening
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
- F21V9/00—Elements for modifying spectral properties, polarisation or intensity of the light emitted, e.g. filters
- F21V9/20—Dichroic filters, i.e. devices operating on the principle of wave interference to pass specific ranges of wavelengths while cancelling others
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B5/00—Optical elements other than lenses
- G02B5/20—Filters
Landscapes
- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Spectroscopy & Molecular Physics (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Led Device Packages (AREA)
Abstract
The utility model discloses a device for increasing a color rendering index of an LED light source. The device comprises the light source, at least one light filter which is used for reflecting primary light with the wave length ranging from 500 nm to 540 nm and performing full-impregnated treatment on primary light with other wave bands is arranged in a white light path channel emitted out by the light source, or in the light source, and a certain proportion of fluorescent powder capable of being excited by blue light coats the surface layer of a blue LED lamp so that the high color rendering index can be obtained. Compared with the prior art, the light filters are adopted, or the certain proportion of fluorescent powder capable of being excited by blue light coats the surface layer of the blue LED lamp, the spectrum of certain primary light (some parts of the spectrum generate a negative effect on a CRI) is shaped, and therefore the color of the whole light source is restored, the light filters reflect the spectrum with the special wave length, the other spectra are transmitted, the CRI is obviously improved, and the device can meet the requirements of a broadcasting station, a sound stage and other occasions having high requirement for the light source.
Description
Technical field
The utility model relates to optical technical field, relates in particular to a kind of device that can improve LED light source colour rendering index in professional stage field.
Background technology
Along with the develop rapidly of semiconductor solid-state optical source in recent years and perplex global energy shortage, the problems such as global warming, half Semiconductor LED light source is energy-conservation with it, environmental protection, the advantages such as light and colour temperature are controlled, extensive use in all trades and professions, has greatly the advantage that replaces conventional light source.Believe in the near future, along with the reduction of cost and the raising of optical efficiency of LED, Semiconductor LED light source can comprehensively replace conventional light source.
For complying with the trend of development in science and technology, in 2009, Guang Feng photoelectricity technology corporation, Ltd. of Shenzhen levied the light of stage computer pattern lamp of shaking the head, and released the whole world first high-power three primary colours (R, G and B) LED light source (as Fig. 1).In this light supply apparatus, all synthetic colors are all by controlling respectively R, G, realize the proportioning of color with the drive current of B three-primary color LED, because adopt three-primary color LED directly luminous, thereby monochromatic color saturation is very high, relatively meet the requirement that stage performance is more bright-coloured to color.But adopt R, G, with a shortcoming of B three primary colors LED light source be: close color chips because adopt to filter, in the synthetic white light of these three primary colours, spectrum is discontinuous, even continuously, near optical filter cutoff wavelength, the energy of spectrum very low (as Fig. 2), thereby the colour rendering index of this light source is very low; In addition, three primary colours R, G, and B belongs to narrow spectrum, thereby in synthetic spectrum, have very large trough, this is also the reason that causes color rendering properties of light source poor.At three primary colours R, in G and B light source, white balance is in 6500K, and CRI only has 40 left and right, when 3200K, only has 15 left and right.
So low CRI has limited the application of LED stage lighting light source in professional occasion, particularly TV station and theater, because it is high to relate to shooting and the professional rank rate of exchange, require the reproducibility of lighting source color higher in the colour temperature of 3200K, namely the colour rendering of lighting source will reach 90 left and right.In order to improve the colour rendering of lighting source color, many primary light source that Guang Feng photoelectricity technology corporation, Ltd. of Shenzhen has developed based on triple channel X-Mirror (are greater than four looks, as 5 primary colours, 6 primary colours, 7 primary colours etc.), the advantage of these many primary light source is: one, based on triple channel X-Mirror optical system, under the prerequisite of equal luminous flux output, maintain the optical extend of light source minimum; Two, adopt multi-primary LED light source, the monochromatic light saturation degree of each primary-color LED light source very high (as saturated amber, cyan etc.), the colour gamut of light-source system output is wider, has met professional stage performance to brightly painted requirement; Three, because adopt multi-primary LED light source, except colour temperature is adjustable, can mix out countless versions color; Four, except adopting the multi-primary LED light source of narrow wave band, also adopt broadband primary lights, in conjunction with the cutoff wavelength of X-Mirror, close light by wavelength to greatest extent, make system close optical efficiency the highest, spectrum is the most continuous, makes synthetic white light reproducibility best; Five, this light source can meet the requirement of stage performance high color temperature photochromic effect to greatest extent, can meet again the lighting requirement of low colour temperature (3200K & 5600K).Six, because adopt multi-primary LED light source, the luminous flux and the CRI that respectively proofread and correct colour temperature can be dynamically adjustable, meet the application demand of different occasions.
Although above light source has plurality of advantages, proofreading and correct colour temperature 3200K, maximum displaying color index can only be accomplished 90 left and right, in more professional application scenario, as TV station, film studio etc., also need higher colour rendering index, could meet professional photography requirement, this kind requires the colour rendering of light source higher.
At present, and commercial LED directly sends on the market arrowband primary lights (as ruddiness, orange light, ruddiness, amber, green, cyan, blue look, navy blue and UV light) peak value spectrum more fixing, waveform is also more constant, in the occasion (effect of soft hot spot of stage application paving light, this kind of occasion is less demanding to the optical extend of light source), some product adopts above 5 primary colours-8 primary colours to produce high aobvious white light.In the system of this light source, proofread and correct each colour temperature by regulating the electric current of each primary lights, in the time that primary lights are greater than three primary colours, each correct white balance colour temperature has infinite group of combination, whatsoever combination, for the colour temperature of a certain correction, in its synthetic light, the spectrum of any single primary lights is the variation (in the time adjusting the electric current of each single-primary-color LED) in the local amplitude of peak wavelength, spectral shape does not have any change, as shown in Figure 3, by the R of narrow wave band, G, B, Amber LED and blue-ray LED excite 5 primary light source of the broadband composition of green light fluorescent powder generation, in figure, synthetic 3200K colour temperature has two kinds of spectrum, the colour rendering of two kinds of spectrum and luminous flux difference, the colour rendering index of spectrum 1 is 82, and the colour rendering index of spectrum 2 only has 70, same colour temperature, 5 primary light source different proportion compositions, its colour rendering index difference is very large, in addition, same colour temperature, 5 primary light source different proportion compositions, are the changes in amplitude of single primary lights, waveform is not any change, and such mode regulates white balance, and its maximum CRI is conditional, be at 3200K, CRI will reach 95 left and right, adopts this kind of mode to regulate, and is impossible realize.
Therefore, how to design a kind of in by multi-primary LED light source or other lighting source forming, can some affect the waveform of larger single primary light source spectrum to CRI by amendment, the device that improves the colour rendering of multi-primary LED light source just becomes problem demanding prompt solution.
Utility model content
Based on above shortcomings in prior art, the utility model now proposes a kind of device that improves LED light source colour rendering index, to solve the problem that CRI index in original multi-primary LED light illumination is not high, cannot meet the requirement of some TV station's Professional Photographies.
A kind of device that improves LED light source colour rendering index disclosed in the utility model, comprise a light source, wherein, in the white light path channels of sending at described light source, be also provided with at least one optical filter, wherein, to wavelength, the primary lights within the scope of 500nm-540nm reflect, the primary lights of all the other wave bands are carried out to full impregnated processing described optical filter.
Preferably, the reflectivity of described optical filter is 5%～70%.
Further, described light source comprises: luminous, two is to color separation film, fly's-eye lens, condenser and through hole, wherein,
Described luminous, is provided with at least one group, and every group of luminous comprises multiple LED lamp arrays;
Described two to color separation film, is provided with two and arranged in a crossed manner in described luminous, for the light sending from luminous described in each is converged to synthetic Ray Of Light;
Described fly's-eye lens, is located at described luminous and two after color separation film, doublely vertically be arranged in parallel, for light beam is carried out to dodging;
Described condenser, after being located at described fly's-eye lens, for light beam is focused on to through hole, makes light beam send from described through hole.
Preferably, after described optical filter is located at described through hole, or before being located at described through hole, after condenser.
Further, the light that each luminous sends is staggered synthetic by single primary lights, or is staggered synthetic by the primary lights of certain primary lights and its all band.
Preferably, described luminous comprises three groups of LED lamp arrays, and described LED lamp array and two forms three-channel X-MIRROR structure to color separation film, and wherein luminous luminous is vertical arranges with two other for a luminous luminous.
More preferably, described optical filter is fixed in a rotating seat, and described rotating seat can drive described optical filter rotation.
Further, described rotating seat is connected in to be controlled on motor, and the rotating speed of described motor and direction are by main control computer control.
Preferably, the top layer of the each LED lamp in described multiple LED lamp arrays is coated with and a certain proportion ofly can, by blue-light excited fluorescent material, makes the white light of described multiple LED lamp array outgoing have high color rendering index (CRI) by the proportioning of each the above fluorescent material of LED lamp is set.
Compared with prior art, a kind of device that improves LED light source colour rendering index provided by the utility model, in by multi-primary LED light source or other lighting source forming, after spectrum selectively being filtered by optical filter, revise some waveform on the larger single primary light source spectrum of CRI impact, can improve to greatest extent the colour rendering of multi-primary LED light source, substantially can meet the requirement of TV station's Professional Photography, in addition, this optical filter is fixed in a rotatable device, in the time of needs high color rendering index (CRI), optical filter is rotated in optical channel, thereby obtain the colour rendering index of the highest light source, in the time that light source does not need high color rendering index (CRI) or need other application, by optical filter whiz optical channel, extremely easy to use, also expand the application of LED light source in special environment.
Brief description of the drawings
Fig. 1 is the schematic diagram of a kind of high-power three primary colors LED light source device of prior art employing.
Fig. 2 is the wavelength of the light supply apparatus generation described in employing Fig. 1 and the corresponding relation figure of spectral energy.
Fig. 3 is the spectral curve of available technology adopting arrowband primary light source system.
Fig. 4 is a kind of schematic diagram that improves LED light source colour rendering index device described in the utility model.
Fig. 5 is the relative spectral curve map in the time of 5 primary colours 3200K.
Fig. 6 adopts a kind of optical filter transmittance curve figure that improves LED light source colour rendering index device described in the utility model.
Detailed description of the invention
Following examples are only for the technical solution of the utility model is more clearly described, and can not limit protection domain of the present utility model with this.Censure specific features as used some vocabulary in the middle of description and claim.Those skilled in the art should understand, and hardware manufacturer may be called same parts with different nouns.This specification and claims are not used as distinguishing the mode of parts with the difference of title, but the difference in function is used as the criterion of distinguishing with parts.Description subsequent descriptions is for implementing preferred embodiments of the present utility model, and right described description is to illustrate that this novel rule is object, not in order to limit scope of the present utility model.Protection domain of the present utility model is when being as the criterion depending on the claims person of defining.
Below in conjunction with the drawings and specific embodiments, the utility model is described in further details.
Obtain the maximum CRI of many primary lights, for a certain target colour temperature (3200K), except regulating the electric current of each primary-color LED, make its synthetic spectrum colour meet the requirement of colour temperature, the spectrum (metamerism) of different base colors light composition has countless versions, must have a kind of CRI the highest; In addition, through waveforms local or entirety amendment primary lights, coordinate the adjusting of the electric current of each primary-color LED, also can significantly improve the CRI of light source.
As shown in Figure 4, a kind of device that improves LED light source colour rendering index the utility model proposes, comprises a light source, wherein, in the white light path channels of sending at described light source, be also provided with at least one optical filter luminous, selectively filter and process for part spectrum is carried out.
Specifically, described optical filter is designed to be able to the characteristic that the primary lights within the scope of 500nm-540nm reflect, the primary lights of all the other wave bands carried out to full impregnated processing to wavelength, and its reflectivity is 5%～70%, the adjustment of reflectivity can realize by the thickness to optical filter and the coating that respective color is set.
Described light source comprises: luminous, two is to color separation film 15, fly's-eye lens 17, condenser 18 and through hole 19.Wherein, described luminous, be provided with at least one group, every group by multiple LED lamp compositions that are arranged in order, the light that each luminous sends can be by single primary lights, as the R primary lights by single, G primary lights, B primary lights are staggered syntheticly, or it is synthetic to be staggered by the primary lights of certain primary lights and its all band, as R primary lights and Amber (amber) LED primary lights synthetic etc.Described luminous can be made up of three groups, two groups or one group of LED lamp array, preferably adopt three groups of LED lamp arrays, wherein one group of arranges vertical with two other luminous of luminous, like this, these three groups of LED lamp arrays and two form a three-channel X-MIRROR structure to color separation film.
Described two to color separation film 15, be provided with two and arranged in a crossed manner in described luminous, it has specific cutoff wavelength, the light sending from passage described in each can be converged to synthetic Ray Of Light, be white light light, described two can be according to customer requirement or actual needs adjustment to the transmitance that sees through band and rejection zone of color separation film 15, and its incidence angle is 45 degree; Described fly's-eye lens 18, double be vertically set in parallel in described luminous and two after color separation film 15 after, for light beam is carried out to dodging; Described condenser 18, after being located at described fly's-eye lens 17, for light beam is focused on to through hole, makes light beam send from described through hole 19.Fly's-eye lens is to be combined to form by a series of lenslets, double fly eye lens array is applied to illuminator and can obtains the high efficiency of light energy utilization and large-area Uniform Illumination.The key of utilizing double fly eye lens array to realize Uniform Illumination is to improve its uniformity and brightness of illumination, the optical axis of two row fly's-eye lenses is parallel to each other, after secondary series fly's-eye lens, can place condenser, condenser not only can make up the deficiency of light quantity and appropriate change is penetrated the light coming character from light source, and by light focusing on tested object, to obtain best illuminating effect, the focal plane of condenser is put lighting screen and has just been formed uniform illumination system.
Wherein, this luminous in the utility model not only can be applied to x-mirror and closes light and can also be applied to that wavelength closes light and the types such as light are closed in other spaces.
As one of the utility model, preferred embodiment described optical filter 20 is fixed in a rotating seat 21, and described rotating seat 21 can drive described optical filter 20 to rotate.Wherein, after described optical filter can be located at described through hole, before also can being located at described through hole, after condenser.Described rotating seat 21 is by a control Electric Machine Control, drive its rotation, and described motor connects main control computer, i.e. input of control commands in this computer in advance, in the time of needs high color rendering index (CRI), this rotating seat 21 of driven by motor, rotates to optical filter in optical channel automatically, thereby obtains the colour rendering index of higher light source; In the time that light source does not need high color rendering index (CRI) or need other application, can will drive optical filter 20 whiz optical channels, reach the object of Based Intelligent Control.
Taking Fig. 4 as example, Fig. 4 is an embodiment of a kind of device that improves LED light source colour rendering index described in the utility model, in many primary light source, we adopt optical filter, spectrum on a certain primary lights (its certain part spectrum produces negative impact to CRI) carries out shaping, thereby reach the reproducibility to integrated light source color, this optical filter can be to special wave spectrum reflection, other spectral transmission.
For the R by narrow wave band, G, B, Amber LED and blue-ray LED excite 5 primary light source of the broadband composition of green light fluorescent powder generation, and we adopt triple channel X-MIRROR structure as shown in Figure 4, adopt five kinds of primary lights pattern lamp light sources synthetic, luminous 11 respectively with luminous 12,13 settings arranged vertically, the setting that is arranged in parallel between luminous 12,13, three passages form the square of a similar opening, light penetrates from opening part, and three-color LED array closes light and goes out white light.Specifically, R primary lights and Amber LED primary lights are arranged by staggered or alternate manner, are encapsulated in 12 passages, and it adopts space to close light; G primary lights and blue-ray LED excite the broadband primary lights that green light fluorescent powder produces to arrange by staggered or alternate manner, are encapsulated in 11 passages, and it adopts space to close light; B primary lights are arranged by staggered or alternate manner, be encapsulated in 13 passages, two of the X-MIRROR of three-channel light source by special cutoff wavelength closes light to the wavelength of color separation film 15, dichroic color separation film is right-angled intersection and arranges and mutually vertically arrange, two ends of dichroic color separation film lay respectively on two square diagonal angles, obtain the wave band of required color by the effect of described dichroic color separation film, by synthetic three-channel light source light beam, this light beam focuses on through hole 19 places through condenser 18 again after the even light of fly's-eye lens 17.
CRI (Color Rendition Index, colour rendering index), when referring to this light illumination of object and throwing light on by standard sources (generally doing standard sources with sunshine), the measuring of its color matching degree, namely color degree true to nature.Represent with Ra, be 100 to the maximum.In the time of little in light source light spectrum or main ripple that shortage object reflects under reference light source, can make color produce obvious aberration, aberration degree is larger, and light source is to the colour rendering of this look poorer.Colour rendering index coefficient is still the common method that definition color rendering properties of light source is evaluated at present.Colour rendering index has 15 kinds of colors, 15 kinds of color designation: R1, light bois de rose; R2, dull gray yellow; R3: saturated yellow green; R4, medium yellow green; R5, pale blue green; R6, light blue; R7, purplish blue color; R8, light red purple; R9, saturated red; R10, saturated yellow; R11, saturated green; R12, saturated blue colors; R13, caucasian skin colours; R14, leaf is green; R15, yellow's colour of skin.The mean value of getting the colour rendering index of front 8 kinds of common colors, is designated as Ra, characterizes this color rendering properties of light source.
The R of narrow wave band, G, B, Amber LED and blue-ray LED excite 5 primary light source of the broadband composition of green light fluorescent powder generation, and following table has shown in embodiments of the invention that 5 primary colours are at the CRI of 3200K output parameter.By regulating electric current, maximum CRI data at 3200K are as follows: maximum CRI is 89.1, although R15 can reach 94.3, R13 only has 84.2, wherein R15 represents the colour rendering index of Asian's colour of skin (yellow's colour of skin), R13 represents the colour rendering index of European's colour of skin (caucasian skin colours), its relative spectral is as Fig. 5 (relative spectral after not filtering), the spectrum of its reference blackbody curve, somewhat high in 500nm-540nm relative spectral power amplitude, by the optical filter of particular design, in the reflection of 500nm-540nm part, reflectivity is between 5%-70%, concrete optimum reflectivity will be determined according to the spectrum of blackbody curve in Fig. 4, can be by the coating to optical filter design specific thicknesses and specific refractive index, obtain specific wavelength light wave to have the coating of larger reflectivity or transmitance.Blackbody curve relatively, the crest of spectrum is in rising trend, can make like this under 3200K colour temperature, and CRI increases.In the present embodiment, its optical filter 20 transmittance curves are as Fig. 6, in the reflection of 500nm-540nm part, all the other wave band full impregnateds, it is placed in optical transmission path, the present embodiment be placed on through hole after, certainly, described optical filter 20 also can be arranged on described through hole 19 before, after condenser 18, be not limited in any way at this.
After spectrum selectively being filtered by the optical filter 20 arranging, through analog simulation, its CRI increases significantly, as Ra brings up to 95 by 89.1, R13 brings up to 95.6, R15 by 84.2 and brings up to 97.7 by 94.3, substantially can meet the requirement of TV station's Professional Photography.In professional light of stage, optical filter is fixed in a rotatable device, in the time of needs high color rendering index (CRI), optical filter is rotated in optical channel, thereby obtains the colour rendering index of the highest light source; In the time that light source does not need high color rendering index (CRI) or need other application, by optical filter 20 whiz optical channels.
Based on another design of the present utility model, the top layer of the each LED lamp in described multiple LED lamp arrays be coated with a certain proportion of can be by blue-light excited fluorescent material, described fluorescent material can be one or several mixing, as green light fluorescent powder or gold-tinted fluorescent material, by being set, the proportioning of each the above fluorescent material of LED lamp make the white light of described multiple LED lamp array outgoing there is high color rendering index (CRI), also can be by adjusting each size of current of three-primary color LED lamp, also can obtain and the blackbody curve spectrum shown in Fig. 5, obtain higher colour rendering index.
Because the spectrum of different elements is different, every kind of atom has the characteristic spectral line of oneself, shown in Fig. 5, borrow the spectral waveform of shining after mating plate optical filtering after filtration, for 5 primary colours optical systems, in the design of light source, blue-ray LED can be excited the broadband peak value spectrum of green light fluorescent powder generation to long-wave band translation, move near 550nm-570nm, this light source can obtain higher CRI.This case study on implementation is when broadband peak value spectrum is to 550nm-570nm translation with respect to the shortcoming of last embodiment, for the three-channel system based on X-MIRROR, because one of them two cutoff wavelength to color separation film is near of 570nm-600nm, broadband primary lights slattern there being more the light of multipotency be reflected, and for the system of the many primary lights (closing light by space) based on X-MIRROR not, unaffected; In addition, the broadband greenish light that generally excites green light fluorescent powder to produce for blue-ray LED, its peak value spectrum more moves to long wave, produces luminous flux lower.But the advantage of this scheme is not need optical filter and rotating seat can obtain high color rendering index (CRI).But by more obtaining optimum CRI value with being used in conjunction with of above-mentioned optical filter.
Similarly, borrow the spectral waveform of shining after mating plate optical filtering after filtration, as another optional embodiment of the utility model, for 5 primary colours optical systems, the wide-band spectrum shape that we also can excite blue-ray LED green light fluorescent powder to produce is made the spectral waveform after filtering as shown in Figure 5.
Similarly, for 5 primary colours optical systems, the broadband primary lights that we also can excite blue-ray LED green light fluorescent powder to produce, pass through the reasonably combined of various different base colors light, and adjustment to LED lamp current magnitude, the adjustment of size of current can be adjusted and be realized by the resistance size to each LED lamp current-limiting resistance, the broadband primary lights of production can be divided into two kinds of primary lights with different wavelength range, a kind of peak wavelength is between 520nm-530nm, and another kind of wavelength is between 540nm-570nm.Like this, also can obtain high color rendering index (CRI).
Certainly, above-mentioned said case study on implementation is not limited to certain color, all effective for the polychromatic source that is more than or equal to 3 primary colours, and in addition, this system is not limited to x-mirror system, closes light and other space close photosystem and be all suitable for for wavelength.
Compared with prior art, a kind of device that improves LED light source colour rendering index described in the utility model, adopt optical filter, spectrum on a certain primary lights (its certain part spectrum produces negative impact to CRI) carries out shaping, thereby the reproducibility of the color of integrated light source, this optical filter is to special wave spectrum reflection, other spectral transmission, CRI is had to significant raising, can meet the occasion that radio station, film studio etc. are higher to light source requirements.
It should be noted that; the foregoing is only preferred embodiment of the present utility model; not thereby limit scope of patent protection of the present utility model, the utility model can also carry out to the structure of above-mentioned various parts the improvement of material and structure, or adopts technical equivalents thing to replace.Therefore the equivalent structure that all utilizations description of the present utility model and diagramatic content are done changes, or directly or indirectly apply to other correlative technology fields and be all in like manner all contained in the scope that the utility model contains.
Claims (9)
1. one kind is improved the device of LED light source colour rendering index, comprise a light source, it is characterized in that, in the white light path channels of sending at described light source, be also provided with at least one optical filter, wherein, to wavelength, the primary lights within the scope of 500nm-540nm reflect, the primary lights of all the other wave bands are carried out to full impregnated processing described optical filter.
2. a kind of device that improves LED light source colour rendering index as claimed in claim 1, is characterized in that, the reflectivity of described optical filter is 5%～70%.
3. a kind of device that improves LED light source colour rendering index as claimed in claim 1, is characterized in that, described light source comprises: luminous, two is to color separation film, fly's-eye lens, condenser and through hole, wherein,
Described luminous, is provided with at least one group, and every group of luminous comprises multiple LED lamp arrays;
Described two to color separation film, is provided with two and arranged in a crossed manner in described luminous, for the light sending from luminous described in each is converged to synthetic Ray Of Light;
Described fly's-eye lens, is located at described luminous and two after color separation film, doublely vertically be arranged in parallel, for light beam is carried out to dodging;
Described condenser, after being located at described fly's-eye lens, for light beam is focused on to through hole, makes light beam send from described through hole.
4. a kind of device that improves LED light source colour rendering index as claimed in claim 3, is characterized in that, after described optical filter is located at described through hole, or before being located at described through hole, after condenser.
5. a kind of device that improves LED light source colour rendering index as claimed in claim 3, is characterized in that, the light that each luminous sends is staggered synthetic by single primary lights, or is staggered synthetic by the primary lights of certain primary lights and its all band.
6. a kind of device that improves LED light source colour rendering index as claimed in claim 3, it is characterized in that, described luminous comprises three groups of LED lamp arrays, described LED lamp array and two forms three-channel X-MIRROR structure to color separation film, and wherein luminous luminous is vertical arranges with two other for a luminous luminous.
7. a kind of device that improves LED light source colour rendering index as claimed in claim 4, is characterized in that, described optical filter is fixed in a rotating seat, and described rotating seat can drive described optical filter rotation.
8. a kind of device that improves LED light source colour rendering index as claimed in claim 7, is characterized in that, described rotating seat is connected in to be controlled on motor, and the rotating speed of described motor and direction are by main control computer control.
9. a kind of device that improves LED light source colour rendering index as claimed in claim 3, it is characterized in that, the top layer of the each LED lamp in described multiple LED lamp array is coated with and a certain proportion ofly can, by blue-light excited fluorescent material, makes the white light of described multiple LED lamp array outgoing have high color rendering index (CRI) by the proportioning of each the above fluorescent material of LED lamp is set.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420221225.5U CN203880619U (en) | 2014-04-30 | 2014-04-30 | Device for increasing color rendering index of LED light source |
| PCT/CN2015/077891 WO2015165414A1 (en) | 2014-04-30 | 2015-04-30 | Device for increasing color rendering index of led light source |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420221225.5U CN203880619U (en) | 2014-04-30 | 2014-04-30 | Device for increasing color rendering index of LED light source |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203880619U true CN203880619U (en) | 2014-10-15 |
Family
ID=51681110
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420221225.5U Expired - Lifetime CN203880619U (en) | 2014-04-30 | 2014-04-30 | Device for increasing color rendering index of LED light source |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN203880619U (en) |
| WO (1) | WO2015165414A1 (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2015165414A1 (en) * | 2014-04-30 | 2015-11-05 | 深圳市绎立锐光科技开发有限公司 | Device for increasing color rendering index of led light source |
| WO2016066078A1 (en) * | 2014-10-29 | 2016-05-06 | 深圳市绎立锐光科技开发有限公司 | Light source apparatus |
| WO2017092668A1 (en) * | 2015-12-01 | 2017-06-08 | 深圳市光峰光电技术有限公司 | Illumination system |
| WO2020019713A1 (en) * | 2018-07-25 | 2020-01-30 | 深圳市绎立锐光科技开发有限公司 | Led lighting device |
| WO2022062479A1 (en) * | 2020-09-27 | 2022-03-31 | 成都极米科技股份有限公司 | Combined light source device and projection system |
| CN114484381A (en) * | 2022-01-21 | 2022-05-13 | 漳州立达信光电子科技有限公司 | Luminous unit for human-induced lighting and lamp composed of luminous unit |
Family Cites Families (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006236749A (en) * | 2005-02-24 | 2006-09-07 | Puraruto:Kk | Light source device and display device |
| JP5322695B2 (en) * | 2009-01-15 | 2013-10-23 | 三菱電機株式会社 | Lighting device |
| JP2011154895A (en) * | 2010-01-27 | 2011-08-11 | Stanley Electric Co Ltd | Light source device and lighting system |
| JP5660662B2 (en) * | 2010-03-19 | 2015-01-28 | 東芝ライテック株式会社 | Lighting device |
| CN102352970B (en) * | 2011-08-09 | 2015-07-22 | 中山大学 | Novel LED (light emitting diode) light source and illumination device thereof |
| US9335531B2 (en) * | 2011-12-30 | 2016-05-10 | Cree, Inc. | LED lighting using spectral notching |
| EP2833422A4 (en) * | 2012-03-30 | 2015-04-01 | Mitsubishi Chem Corp | Semiconductor light-emitting device, and illumination device |
| CN105179975B (en) * | 2013-04-02 | 2019-02-12 | 四川新力光源股份有限公司 | A method of improving LED light device colour rendering |
| CN203880619U (en) * | 2014-04-30 | 2014-10-15 | 深圳市绎立锐光科技开发有限公司 | Device for increasing color rendering index of LED light source |
-
2014
- 2014-04-30 CN CN201420221225.5U patent/CN203880619U/en not_active Expired - Lifetime
-
2015
- 2015-04-30 WO PCT/CN2015/077891 patent/WO2015165414A1/en active Application Filing
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2015165414A1 (en) * | 2014-04-30 | 2015-11-05 | 深圳市绎立锐光科技开发有限公司 | Device for increasing color rendering index of led light source |
| WO2016066078A1 (en) * | 2014-10-29 | 2016-05-06 | 深圳市绎立锐光科技开发有限公司 | Light source apparatus |
| US20170314744A1 (en) * | 2014-10-29 | 2017-11-02 | Appotronics China Corporation | Light source device |
| US10704743B2 (en) | 2014-10-29 | 2020-07-07 | Ylx Incorporated | Saturated amber light source device |
| WO2017092668A1 (en) * | 2015-12-01 | 2017-06-08 | 深圳市光峰光电技术有限公司 | Illumination system |
| WO2020019713A1 (en) * | 2018-07-25 | 2020-01-30 | 深圳市绎立锐光科技开发有限公司 | Led lighting device |
| WO2022062479A1 (en) * | 2020-09-27 | 2022-03-31 | 成都极米科技股份有限公司 | Combined light source device and projection system |
| CN114326274A (en) * | 2020-09-27 | 2022-04-12 | 成都极米科技股份有限公司 | Light combination light source device and projection system |
| CN114484381A (en) * | 2022-01-21 | 2022-05-13 | 漳州立达信光电子科技有限公司 | Luminous unit for human-induced lighting and lamp composed of luminous unit |
| CN114484381B (en) * | 2022-01-21 | 2024-05-28 | 漳州立达信光电子科技有限公司 | Luminous unit for artificial illumination and lamp composed of luminous unit |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2015165414A1 (en) | 2015-11-05 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN203880619U (en) | Device for increasing color rendering index of LED light source | |
| CN104633499B (en) | The LED light source module of a kind of high color rendering index (CRI) and LED lamp | |
| US8496354B2 (en) | Beam control system for an LED luminaire | |
| CN205191303U (en) | Laser lighting device | |
| CN206819040U (en) | Light-source system and display device | |
| DE102011002960B3 (en) | Solar simulator and method for operating a solar simulator | |
| CN203258507U (en) | Light-emitting device and stage lamp system | |
| CN102036435A (en) | Light color toning method and light color variable light-emitting diode light source module | |
| CN205301793U (en) | Illuminating system | |
| US20180042076A1 (en) | Lighting device led module with effects for color temperature tuning and color tuning | |
| WO2015027786A1 (en) | Led lamp | |
| CN1647585A (en) | Apparatus for producing a beam of light having a controlled luminous flux spectrum | |
| CN108132576A (en) | Light source module, projection arrangement and its driving method | |
| CN202886821U (en) | Light source system and related projection system | |
| CN105973572A (en) | Spectrum optimization method for multicolor LED to realize optimum light source color rendering | |
| CN102141210A (en) | High color rendering index and high-brightness light lighting equipment and method for realizing multi color temperature regulation | |
| CN201487708U (en) | LED stage light illumination device for improving color uniformity | |
| CN104053278A (en) | Four-color LED light mixing method based on visible light communication | |
| CN104373838A (en) | LED light source module and LED lamp | |
| US11428384B2 (en) | Duv control of luminaire beam color | |
| CN204790195U (en) | High -power white light light beam produces device based on even light of secondary | |
| CN104048266A (en) | Optical filter and CMY (Cyan Magenta Yellow) color mixing component utilizing optical filter as well as optical system thereof | |
| WO2016152913A1 (en) | Illumination system and illumination method | |
| CN217608008U (en) | Light source module and lamp | |
| CN110673430A (en) | Large-color-gamut laser light source system integrated through trapped wave beam combination |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of utility model: Device for increasing color rendering index of LED light source Effective date of registration: 20180625 Granted publication date: 20141015 Pledgee: CITIC Bank Limited by Share Ltd. Shenzhen branch Pledgor: YLX Inc. Registration number: 2018440020037 |
|
| PC01 | Cancellation of the registration of the contract for pledge of patent right | ||
| PC01 | Cancellation of the registration of the contract for pledge of patent right |
Date of cancellation: 20190404 Granted publication date: 20141015 Pledgee: CITIC Bank Limited by Share Ltd. Shenzhen branch Pledgor: YLX Inc. Registration number: 2018440020037 |
|
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of utility model: Device for increasing color rendering index of LED light source Effective date of registration: 20190409 Granted publication date: 20141015 Pledgee: CITIC Bank Limited by Share Ltd. Shenzhen branch Pledgor: YLX Inc. Registration number: 2019440020024 |
|
| PE01 | Entry into force of the registration of the contract for pledge of patent right | ||
| PC01 | Cancellation of the registration of the contract for pledge of patent right | ||
| PC01 | Cancellation of the registration of the contract for pledge of patent right |
Date of cancellation: 20201010 Granted publication date: 20141015 Pledgee: CITIC Bank Limited by Share Ltd. Shenzhen branch Pledgor: YLX Inc. Registration number: 2019440020024 |
|
| PE01 | Entry into force of the registration of the contract for pledge of patent right | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of utility model: Device for improving color rendering index of LED light source Effective date of registration: 20201014 Granted publication date: 20141015 Pledgee: CITIC Bank Limited by Share Ltd. Shenzhen branch Pledgor: YLX Inc. Registration number: Y2020440020014 |
|
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20141015 |