CN1987550A - LED multiple color light combined prism color synthesizer - Google Patents
LED multiple color light combined prism color synthesizer Download PDFInfo
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- CN1987550A CN1987550A CN 200510111861 CN200510111861A CN1987550A CN 1987550 A CN1987550 A CN 1987550A CN 200510111861 CN200510111861 CN 200510111861 CN 200510111861 A CN200510111861 A CN 200510111861A CN 1987550 A CN1987550 A CN 1987550A
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Abstract
Belonging to photoelectric illumination and display technical field, the device for joining colors contains six optical modules. Being in range of visible light, centered waves of the six optical modules are from lambda 1 to lambda 6 in sequence from most to least. Optical module with centered wave being as lambda 1 is coupled to other two, three, four or five modules in the five optical modules to constitute device for joining three, four, five, and six colors light. Advantages are: easy of designing and preparing film series of spectrum film, flexible structure, capable of constituting device for joining multiple colors lights, high brightness and color saturation etc. The device is especially suitable as illuminated light sources utilized in LCD,DLP,LCOS etc display system.
Description
Technical field
The present invention relates to a kind of LED multiple color light combined prism color synthesizer, belong to photoelectric lighting and technique for displaying field.
Background technology
It is that the device of white light mainly is that X-prism 77 (X-cube) closes the look device that present red, green, blue three coloured light close look, and its basic structure as shown in Figure 1.X-prism 77 is that 45 ° right-angle prism gummed forms by base angle, four cross sections, ruddiness condenser 71, green glow condenser 74, blue light condenser 76 are glued to left surface, end face and the right flank of X-prism respectively, red-light LED 72, green light LED 73 and blue-ray LED 75 stick on respectively on the end face of ruddiness condenser 71, green glow condenser 74 and blue light condenser 76, be coated with reflect blue on X-prism 77 cemented surfaces 772 and 773, see through the spectro-film of green glow and ruddiness, be coated with reflect red on X-prism 77 cemented surfaces 771 and 772, seen through the spectro-film of green glow and blue light.Red-light LED 72, it is red that green light LED 73 and blue-ray LED 75 send, green and blue three color light is respectively through ruddiness condenser 71, green glow condenser 74 and blue light condenser 76 optical coupled, inject X-prism 77, the part of ruddiness is reflected by spectro-film 771, see through spectro-film 773 outgoing then, another part of ruddiness sees through spectro-film 773, then by spectro-film 774 reflection back outgoing, the part of blue light is reflected by spectro-film 772, see through spectro-film 774 outgoing then, another part of blue light sees through spectro-film 774, then by spectro-film 773 reflection back outgoing, green glow sees through spectro-film 771, spectro-film 772, spectro-film 773 and spectro-film 774 back outgoing, it is white light that this three coloured light closes look, in the mode of the bottom surface of vertical X-prism, through the outgoing of the bottom surface of X-prism.The shortcoming of background technology is that the X-prism is formed by four right-angle prism gummeds, the requirement on machining accuracy height, and complex process, plated film design and coating process difficulty are big, the cost of manufacture costliness.X-prism color device is a fixed sturcture, and not reconfigurable and arrangement can only be closed three coloured light, can not be combined into the three looks above photosynthetic look device of polychrome.
Summary of the invention
The technical problem to be solved in the present invention is to release a kind of LED multiple color light combined prism color synthesizer.This closes the look device following advantage: design of film system and making are easy, and the prism accuracy requirement is low, handling ease, and structure is flexible, can be combined into the three looks above photosynthetic look device of polychrome, the color saturation of emergent light and brightness height, the gamut range of emergent light is wide.
For achieving the above object, the present invention adopts following technical scheme.The present invention contains six optical modules, and the centre wavelength of their work all in visible-range, is respectively λ
1, λ
2, λ
3, λ
4, λ
5, λ
6, from being up to minimum, centre wavelength is λ successively
1Optical module and remaining five optical module in two, three, four or five optical coupled be combined into three coloured light, four coloured light, multicolored light or six coloured light and close the look device.
Now be described with reference to the accompanying drawings technology contents of the present invention.
A kind of LED multiple color light combined prism color synthesizer is characterized in that, contains six optical modules: the centre wavelength that first optical module 1 contains first condenser 11 and a LED 10, the one LED 10 is λ
1, a LED10 and first condenser, 11 tops are optical coupled, and the centre wavelength that second optical module contains first prism 24, second condenser 21 and the 2nd LED 20, the two LED20 is λ
2The 2nd LED 20 and second condenser, 21 tops are optical coupled, and the bottom 22 of second condenser 21 and the plane of incidence 23 of first prism 24 are optical coupled, and first prism 24 is made up of two 45 ° of right-angle prisms, it is that the reflection kernel wavelength is λ that first spectro-film, 27, the first spectro-films 27 are arranged on the diagonal plane
2Light and see through centre wavelength and compare central wavelength lambda
2The spectro-film of big light, outgoing centre wavelength are λ
2The face of light be exit facet 26, the opposite of exit facet 26 is that the centre wavelength that transparent surface 25, the three optical modules 3 contain second prism 34, the 3rd condenser 31 and the 3rd LED 30, the three LED 30 is λ
3The 3rd LED 30 and the 3rd condenser 31 tops are optical coupled, the bottom 32 of the 3rd condenser 31 and the plane of incidence 33 of second prism 34 are optical coupled, second prism 34 is made up of two 45 ° of right-angle prisms, it is that the reflection kernel wavelength is λ that second spectro-film, 37, the second spectro-films 37 are arranged on their diagonal plane
3Light and see through centre wavelength and compare central wavelength lambda
3The spectro-film of big light, outgoing centre wavelength are λ
3The face of light be exit facet 36, the opposite of exit facet 36 is that the centre wavelength that transparent surface 35, the four optical modules 4 contain prism 44, the 4th condenser 41 and the 4th LED 40, the four LED 40 is λ
4The 4th LED 40 and the 4th condenser 41 tops are optical coupled, the bottom 42 of the 4th condenser 41 and the plane of incidence 43 of prism 44 are optical coupled, prism 44 is made up of two 45 ° of right-angle prisms, it is that the reflection kernel wavelength is λ that the 3rd spectro-film 47, the three spectro-films 47 are arranged on their diagonal plane
4Light and to see through centre wavelength be λ than centre wavelength
4The spectro-film of big light, outgoing centre wavelength are λ
4The face of light is an exit facet 46, and the opposite of exit facet 46 is that the centre wavelength that transparent surface 45, the five optical modules 5 contain the 4th prism 54, the 5th condenser 51 and the 5th LED 50, the five LED 50 is λ
5The 5th LED 50 and the 5th condenser 51 tops are optical coupled, the bottom 52 of the 5th condenser 51 and the plane of incidence 53 of the 4th prism 54 are optical coupled, the 4th prism 54 is made up of two 45 ° of right-angle prisms, it is that the reflection kernel wavelength is λ that the 4th spectro-film 57, the four spectro-films 57 are arranged on their diagonal plane
5Light and see through centre wavelength and compare central wavelength lambda
5The spectro-film of big light, outgoing centre wavelength are λ
5The face of light be exit facet 56, the opposite of exit facet 56 is that the centre wavelength that transparent surface 55, the six optical modules 6 contain pentaprism 64, the 6th condenser 61 and the 6th LED 60, the six LED 60 is λ
6The 6th LED 60 and the 6th condenser 61 tops are optical coupled, the bottom 62 of the 6th condenser 61 and the plane of incidence 63 of pentaprism 64 are optical coupled, pentaprism 64 is made up of two 45 ° of right-angle prisms, it is that the reflection kernel wavelength is λ that the 5th spectro-film 67, the five spectro-films 67 are arranged on their diagonal plane
6Light and see through centre wavelength and compare central wavelength lambda
6The spectro-film of big light, outgoing centre wavelength are λ
6The face of light be exit facet 66, the opposite of exit facet 66 is a transparent surface 65, in first optical module 1 and all the other five optical modules two, three, four or five optical coupled are combined into three coloured light, four coloured light, multicolored light or six coloured light and close the look device, array mode: the bottom surface 12 of first optical module 1 and centre wavelength are only less than central wavelength lambda
1The transparent surface of optical module be optical coupled, the transparent surface of remaining optical module is optical coupled with the exit facet of last optical module successively according to centre wavelength is descending, the exit facet of last optical module be the LED multiple color light combined prism color synthesizer close the coloured light exit facet, in the LED multiple color light combined prism color synthesizer, any one spectro-film in five optical modules of except that first optical module 1 all the other can be parallel with the spectro-film of adjacent optical assembly, also can be vertical.
Of the present invention being further characterized in that: the central wavelength lambda of six optical modules
1, λ
2, λ
3, λ
4, λ
5, λ
6Be respectively 640nm, 589nm, 530nm, 495nm, 470nm, 455nm.
The present invention has the following advantages.
1, design of beam split membrane system and making are easily.Do not exist color to harass between each spectro-film, reduced the difficulty of film system design, can realize the plated film of little F numerical value, improve the LED utilization ratio of optical energy.
2, structure is flexible, can be combined into the photosynthetic look device of polychrome, the color saturation of emergent light and brightness height, and gamut range is wide.
3, the prism requirement on machining accuracy is not high, technology is simple, cost of manufacture is low.
Description of drawings
Fig. 1 is the structural representation of LED three coloured light X-prism color devices.
Fig. 2 is the structural representation of first optical module 1.
Fig. 3 is the structural representation of second optical module 2.
Fig. 4 is the structural representation of the 3rd optical module 3.
Fig. 5 is the structural representation of the 4th optical module 4.
Fig. 6 is the structural representation of the 5th optical module 5.
Fig. 7 is the structural representation of the 6th optical module 6.
Fig. 8 is the structural representation of LED three coloured light combined prism color devices.
Fig. 9 is the structural representation of LED four coloured light combined prism color devices.
Figure 10 is the structural representation of LED five colors light combined prism color device.
Figure 11 is the structural representation of LED six coloured light combined prism color devices.
Embodiment
Now describe technical scheme of the present invention in conjunction with the accompanying drawings and embodiments in detail.
Present embodiment is LED three coloured light combined prism color devices (seeing accompanying drawing 8), it is made up of first optical module 1, the 3rd optical module 3 and the 5th optical module 5, the bottom surface 12 of first condenser 11 and the transparent surface 35 of the 3rd optical module 3 are optical coupled, the exit facet 36 of the 3rd optical module 3 and the transparent surface 55 of the 5th optical module 5 are optical coupled, the 5th optical module 5 exit facets 56 are to close coloured light exit facet, λ
1, λ
3, λ
5Being respectively 640nm, 530nm, 470nm, is white light from the coloured light that closes of exit facet 56 outgoing.
Now describe the principle of work of present embodiment in detail.
The centre wavelength that the one LED 10 sends is λ
1Light, enter transparent surface 35 by bottom surface 12 optical coupled, and to see through the centre wavelength that second spectro-film, 37, the three LED 30 send be λ
3Light enter the plane of incidence 33 by bottom surface 32 optical coupled, by the reflection of second spectro-film 37, with the centre wavelength that sees through second spectro-film 37 be λ
1Light merge together, from exit facet 36 outgoing, centre wavelength is λ
1And λ
3Light merge together, see through transparent surface 55, and to see through the centre wavelength that the 4th spectro-film 57, the five LED 50 send be λ
5Light enter the plane of incidence 53 by bottom surface 52 optical coupled, and by the reflection of the 4th spectro-film 57, with the centre wavelength that sees through the 4th spectro-film 57 be λ
1And λ
3Light merge together, from exit facet 56 outgoing, the coloured light that closes of outgoing is white light.
Present embodiment is LED four coloured light combined prism color devices (seeing accompanying drawing 9), it is made up of first optical module 1, second optical module 2, the 3rd optical module 3 and the 5th optical module 5, the bottom surface 12 of first condenser 11 and the transparent surface 25 of second optical module 2 are optical coupled, the exit facet 26 of second optical module 2 and the transparent surface 35 of the 3rd optical module 3 are optical coupled, the exit facet 36 of the 3rd optical module 3 and the transparent surface 55 of the 5th optical module 5 are optical coupled, the exit facet 56 of the 5th optical module 5 is to close coloured light exit facet, λ
1, λ
2, λ
3, λ
5Being respectively 640nm, 589nm, 530nm, 470nm, is white light from the coloured light that closes of exit facet 56 outgoing.
Present embodiment is a LED five colors light combined prism color devices (seeing accompanying drawing 10), it is by first optical module 1, second optical module 2, the 3rd optical module 3, the 4th optical module 4 and the 5th optical module 5 are formed, the bottom surface 12 of first condenser 11 and the transparent surface 25 of second optical module 2 are optical coupled, the exit facet 26 of second optical module 2 and the transparent surface 35 of the 3rd optical module 3 are optical coupled, the transparent surface 45 of the 3rd optical module 3 exit facets 36 and the 4th optical module 4 is optical coupled, the transparent surface 46 of the 4th optical module 4 and the transparent surface 55 of the 5th optical module 5 are optical coupled, the exit facet 56 of the 5th optical module 5 is to close coloured light exit facet, λ
1, λ
2, λ
3, λ
4, λ
5Being respectively 640nm, 589nm, 530nm, 495nm, 470nm, is white light from the coloured light that closes of exit facet 56 outgoing.
Present embodiment is LED six coloured light combined prism color devices (seeing accompanying drawing 10), it is by first optical module 1, second optical module 2, the 3rd optical module 3, the 4th optical module 4, the 5th optical module 5 and the 6th optical module 6 are formed, the bottom surface 12 of first condenser 11 and second optical module, 2 transparent surfaces 25 are optical coupled, the exit facet 26 of second optical module 2 and the transparent surface 35 of the 3rd optical module 3 are optical coupled, the exit facet 36 of the 3rd optical module 3 and the transparent surface 45 of the 4th optical module 4 are optical coupled, the transparent surface 46 of the 4th optical module 4 and the transparent surface 55 of the 5th optical module 5 are optical coupled, the exit facet 56 of the 5th optical module 5 and the transparent surface 65 of the 6th optical module 6 are optical coupled, the exit facet 66 of the 6th optical module 6 is to close coloured light exit facet, λ
1, λ
2, λ
3, λ
4, λ
5, λ
6Being respectively 640nm, 589nm, 530nm, 495nm, 470nm, 455nm, is white light from the coloured light that closes of exit facet 66 outgoing.
The principle of work of the principle of work of embodiment 2～4 and embodiment 1 is similar, just repeats no more here.
The look device that closes of the present invention is particularly suitable for being used in the display system of types such as LCD, DLP, LCOS, as lighting source.
Claims (6)
1, a kind of LED multiple color light combined prism color synthesizer is characterized in that, contains six optical modules: first optical module 1 contains first condenser 11 and a LED10, and the centre wavelength of a LED10 is λ
1, a LED10 and first condenser, 11 tops are optical coupled, and second optical module contains first prism 24, second condenser 21 and the 2nd LED20, and the centre wavelength of the 2nd LED20 is λ
2The 2nd LED20 and second condenser, 21 tops are optical coupled, and the bottom 22 of second condenser 21 and the plane of incidence 23 of first prism 24 are optical coupled, and first prism 24 is made up of two 45 ° of right-angle prisms, it is that the reflection kernel wavelength is λ that first spectro-film, 27, the first spectro-films 27 are arranged on the diagonal plane
2Light and see through centre wavelength and compare central wavelength lambda
2The spectro-film of big light, outgoing centre wavelength are λ
2The face of light be exit facet 26, the opposite of exit facet 26 is that transparent surface 25, the three optical modules 3 contain second prism 34, the 3rd condenser 31 and the 3rd LED30, the centre wavelength of the 3rd LED30 is λ
3The 3rd LED30 and the 3rd condenser 31 tops are optical coupled, the bottom 32 of the 3rd condenser 31 and the plane of incidence 33 of second prism 34 are optical coupled, second prism 34 is made up of two 45 ° of right-angle prisms, it is that the reflection kernel wavelength is λ that second spectro-film, 37, the second spectro-films 37 are arranged on their diagonal plane
3Light and see through centre wavelength and compare central wavelength lambda
3The spectro-film of big light, outgoing centre wavelength are λ
3The face of light be exit facet 36, the opposite of exit facet 36 is that transparent surface 35, the four optical modules 4 contain prism 44, the 4th condenser 41 and the 4th LED40, the centre wavelength of the 4th LED40 is λ
4The 4th LED40 and the 4th condenser 41 tops are optical coupled, the bottom 42 of the 4th condenser 41 and the plane of incidence 43 of prism 44 are optical coupled, prism 44 is made up of two 45 ° of right-angle prisms, it is that the reflection kernel wavelength is λ that the 3rd spectro-film 47, the three spectro-films 47 are arranged on their diagonal plane
4Light and to see through centre wavelength be λ than centre wavelength
4The spectro-film of big light, outgoing centre wavelength are λ
4The face of light is an exit facet 46, and the opposite of exit facet 46 is that transparent surface 45, the five optical modules 5 contain the 4th prism 54, the 5th condenser 51 and the 5th LED50, and the centre wavelength of LED50 is λ
5The 5th LED50 and the 5th condenser 51 tops are optical coupled, the bottom 52 of the 5th condenser 51 and the plane of incidence 53 of the 4th prism 54 are optical coupled, the 4th prism 54 is made up of two 45 ° of right-angle prisms, it is that the reflection kernel wavelength is λ that the 4th spectro-film 57, the four spectro-films 57 are arranged on their diagonal plane
5Light and see through centre wavelength and compare central wavelength lambda
5The spectro-film of big light, outgoing centre wavelength are λ
5The face of light be exit facet 56, the opposite of exit facet 56 is that transparent surface 55, the six optical modules 6 contain pentaprism 64, the 6th condenser 61 and the 6th LED60, the centre wavelength of the 6th LED60 is λ
6The 6th LED60 and the 6th condenser 61 tops are optical coupled, the bottom 62 of the 6th condenser 61 and the plane of incidence 63 of pentaprism 64 are optical coupled, pentaprism 64 is made up of two 45 ° of right-angle prisms, it is that the reflection kernel wavelength is λ that the 5th spectro-film 67, the five spectro-films 67 are arranged on their diagonal plane
6Light and see through centre wavelength and compare central wavelength lambda
6The spectro-film of big light, outgoing centre wavelength are λ
6The face of light be exit facet 66, the opposite of exit facet 66 is a transparent surface 65, in first optical module 1 and all the other five optical modules two, three, four or five optical coupled are combined into three coloured light, four coloured light, multicolored light or six coloured light and close the look device, array mode: the bottom surface 12 of first optical module 1 and centre wavelength are only less than central wavelength lambda
1The transparent surface of optical module be optical coupled, the transparent surface of remaining optical module is optical coupled with the exit facet of last optical module successively according to centre wavelength is descending, the exit facet of last optical module be the LED multiple color light combined prism color synthesizer close the coloured light exit facet, in the LED multiple color light combined prism color synthesizer, any one spectro-film in five optical modules of except that first optical module 1 all the other can be parallel with the spectro-film of adjacent optical assembly, also can be vertical.
2, the photosynthetic look device of polychrome according to claim 1 is characterized in that the central wavelength lambda of six optical modules
1, λ
2, λ
3, λ
4, λ
5, λ
6Be respectively 640nm, 589nm, 530nm, 495nm, 470nm, 455nm.
3, the photosynthetic look device of polychrome according to claim 1, it is characterized in that, it is a kind of LED three coloured light combined prism color devices, form by first optical module 1, the 3rd optical module 3 and the 5th optical module 5, the bottom surface 12 of first condenser 11 and the transparent surface 35 of the 3rd optical module 3 are optical coupled, the exit facet 36 of the 3rd optical module 3 and the transparent surface 55 of the 5th optical module 5 are optical coupled, and the 5th optical module 5 exit facets 56 are to close coloured light exit facet, λ
1, λ
3, λ
5Being respectively 640nm, 530nm, 470nm, is white light from the coloured light that closes of exit facet 56 outgoing.
4, the photosynthetic look device of polychrome according to claim 1, it is characterized in that, it is a kind of LED four coloured light combined prism color devices, by first optical module 1, second optical module 2, the 3rd optical module 3 and the 5th optical module 5 are formed, the bottom surface 12 of first condenser 11 and the transparent surface 25 of second optical module 2 are optical coupled, the exit facet 26 of second optical module 2 and the transparent surface 35 of the 3rd optical module 3 are optical coupled, the exit facet 36 of the 3rd optical module 3 and the transparent surface 55 of the 5th optical module 5 are optical coupled, the exit facet 56 of the 5th optical module 5 is to close coloured light exit facet, λ
1, λ
2, λ
3, λ
5Being respectively 640nm, 589nm, 530nm, 470nm, is white light from the coloured light that closes of exit facet 56 outgoing.
5, the photosynthetic look device of polychrome according to claim 1, it is characterized in that, it is a kind of LED five colors light combined prism color device, by first optical module 1, second optical module 2, the 3rd optical module 3, the 4th optical module 4 and the 5th optical module 5 are formed, the bottom surface 12 of first condenser 11 and the transparent surface 25 of second optical module 2 are optical coupled, the exit facet 26 of second optical module 2 and the transparent surface 35 of the 3rd optical module 3 are optical coupled, the transparent surface 45 of the 3rd optical module 3 exit facets 36 and the 4th optical module 4 is optical coupled, the transparent surface 46 of the 4th optical module 4 and the transparent surface 55 of the 5th optical module 5 are optical coupled, the exit facet 56 of the 5th optical module 5 is to close coloured light exit facet, λ
1, λ
2, λ
3, λ
4, λ
5Being respectively 640nm, 589nm, 530nm, 495nm, 470nm, is white light from the coloured light that closes of exit facet 56 outgoing.
6, the photosynthetic look device of polychrome according to claim 1, it is characterized in that, it is a kind of LED six coloured light combined prism color devices, by first optical module 1, second optical module 2, the 3rd optical module 3, the 4th optical module 4, the 5th optical module 5 and the 6th optical module 6 are formed, the bottom surface 12 of first condenser 11 and second optical module, 2 transparent surfaces 25 are optical coupled, the exit facet 26 of second optical module 2 and the transparent surface 35 of the 3rd optical module 3 are optical coupled, the exit facet 36 of the 3rd optical module 3 and the transparent surface 45 of the 4th optical module 4 are optical coupled, the transparent surface 46 of the 4th optical module 4 and the transparent surface 55 of the 5th optical module 5 are optical coupled, the exit facet 56 of the 5th optical module 5 and the transparent surface 65 of the 6th optical module 6 are optical coupled, the exit facet 66 of the 6th optical module 6 is to close coloured light exit facet, λ
1, λ
2, λ
3, λ
4, λ
5, λ
6Being respectively 640nm, 589nm, 530nm, 495nm, 470nm, 455nm, is white light from the coloured light that closes of exit facet 66 outgoing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200510111861 CN1987550A (en) | 2005-12-22 | 2005-12-22 | LED multiple color light combined prism color synthesizer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200510111861 CN1987550A (en) | 2005-12-22 | 2005-12-22 | LED multiple color light combined prism color synthesizer |
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| Publication Number | Publication Date |
|---|---|
| CN1987550A true CN1987550A (en) | 2007-06-27 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200510111861 Pending CN1987550A (en) | 2005-12-22 | 2005-12-22 | LED multiple color light combined prism color synthesizer |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102182945A (en) * | 2011-04-15 | 2011-09-14 | 青岛海泰镀膜技术有限公司 | LED (light-emitted diode) fluorescence excitation light source and method for exciting fluorescence of LED |
| CN103148421A (en) * | 2012-12-24 | 2013-06-12 | 浙江大学 | Suspended LED (light-emitting diode) multispectral shadowless lamp |
| CN109143596A (en) * | 2018-10-25 | 2019-01-04 | 合肥中科易康达生物医学有限公司 | A kind of multispectral light source based on prism structure |
-
2005
- 2005-12-22 CN CN 200510111861 patent/CN1987550A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102182945A (en) * | 2011-04-15 | 2011-09-14 | 青岛海泰镀膜技术有限公司 | LED (light-emitted diode) fluorescence excitation light source and method for exciting fluorescence of LED |
| CN103148421A (en) * | 2012-12-24 | 2013-06-12 | 浙江大学 | Suspended LED (light-emitting diode) multispectral shadowless lamp |
| CN103148421B (en) * | 2012-12-24 | 2015-12-23 | 浙江大学 | The multispectral shadowless lamp of a kind of sky hanging LED |
| CN109143596A (en) * | 2018-10-25 | 2019-01-04 | 合肥中科易康达生物医学有限公司 | A kind of multispectral light source based on prism structure |
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