CN208721908U

CN208721908U - A kind of optical system of multi-color LED light source

Info

Publication number: CN208721908U
Application number: CN201821581048.6U
Authority: CN
Inventors: 李虎; 黄成�; 其他发明人请求不公开姓名
Original assignee: Guangzhou Guang Lian Electronic Technology Co Ltd
Current assignee: Guangzhou Guang Lian Electronic Technology Co Ltd
Priority date: 2018-09-27
Filing date: 2018-09-27
Publication date: 2019-04-09
Anticipated expiration: 2028-09-27

Abstract

A kind of optical system of multi-color LED light source, including at least two groups LED light source array, a kind of LED chip of color is included at least on every group of LED light source array, and the LED chip luminescent color of two groups of LED light source arrays is different；It further include being correspondingly arranged with LED light source array, at the collimator lens array of nearly collimated light beam, the LED chip on each lens and LED light source array on collimator lens array corresponds the beam collimation for exporting LED chip；It further include that the Gauss being sequentially arranged on collimator lens array light direction scatters light splitting conjunction color device and collector lens, the Gauss scatters light splitting and closes color device for converging and homogenizing the nearly directional light issued after the collimated lens array of several LED light source arrays, form the identical light of a branch of light direction, it is focused on default face through collector lens again, forms the hot spot of Gaussian Profile.Compared with the prior art, the utility model has the brightness that beam center can be effectively ensured and carries out homogenized beneficial effect to light beam.

Description

A kind of optical system of multi-color LED light source

Technical field

The utility model relates to the technical fields of LED light device, more particularly, to a kind of light of multi-color LED light source System.

Background technique

In beam lighting application, the high-power golden halogen discharging bulb that the light source of traditional beam lighting largely uses, however Golden halogen discharging bulb be white light source, there are efficiencies it is low, the service life is short, mercury pollution the problems such as.On the other hand, due to golden halogen discharging bulb Luminous spectrum is white continuous spectrum, and different color needed for light of stage can only lean on different color filters to realize, so that Light projection is at high cost, and efficiency is low.

And energy-conserving light source of the LED light source as green non-pollution is just gradually taken by the favor of more and more insiders Cash equivalent halogen discharging bulb, as the preferred light source in lighting area.In the lighting area that color is closed in light splitting, multiple groups polychrome is generally used LED array and the photosynthetic color device of a component, by light splitting close color device the light source of multiple groups multi-colored led array synthesized it is a branch of white Light output.But its provide light splitting close color device can only transmission or reflection light beam, LED beam by the light splitting close color device When, have segment beam absorb or differentiation, cause hot spot brightness deterioration or radiation direction change or beam center it is bright Degree weakens；Though and light splitting in the prior art close color device solve the problems, such as that a variety of LED modules with different colors pool one of light beam, But the new problem for closing color unevenness is produced, after the LED array of multiple groups polychrome closes color device by light splitting, due to every LED There are luminance differences for individual, and there are tolerances when every group of LED array and optics assembly, lead to the non-uniform LED array light of multiple groups When beam convergence, there are bright dark and color homogeneity difference, the multi-colored led light beams of output to be completely coincident for hot spot, leads to hot spot Brightness and color uniformity it is worse.

Utility model content

To overcome existing technological deficiency, the utility model provides a kind of brightness that beam center can be effectively ensured, Light beam can be homogenized again, and the optical system of simple process, multi-color LED light source at low cost.

For realization the purpose of this utility model, it is achieved using following technical scheme:

A kind of optical system of multi-color LED light source, including at least two groups LED light source array, every group of LED light source array up to It less include a kind of LED chip of color, the LED chip luminescent color of two groups of LED light source arrays is different；Further include and LED light source The collimator lens array that array is correspondingly arranged, the LED chip one on each lens and LED light source array on collimator lens array One is corresponding, and the beam collimation for exporting LED chip is at nearly directional light；It further include being sequentially arranged at collimator lens array to go out light side Upward Gauss scatters light splitting and closes color device and collector lens, and the Gauss scattering light splitting is closed color device and is used for several LED lights The nearly directional light issued after the collimated lens array of source array is converged and is homogenized, and forms the identical light of a branch of light direction, then pass through Collector lens focuses on default face, forms the hot spot of Gaussian Profile.

The light splitting Multiplexing apparatus of the optical system of multi-color LED light source in the prior art, use is generally conventional optical filtering Piece, though the characteristic with transmission or reflection, does not ensure that multi-colored led beam effect, can not homogenize to light beam, The multi-colored led light beam of output cannot be completely coincident, and the brightness of hot spot and uniformity is caused to be deteriorated.And in the utility model, pass through Gauss is set between collimation lens and collector lens and scatters light splitting conjunction color device, scatters the height that color device is closed in light splitting using Gauss Non-uniform light beam is carried out Gauss scattering and homogenized by this scattering properties, can be well to close flat after collimation lens collimates Row light is homogenized；The reflection characteristic that color device is closed in light splitting is scattered using Gauss, can guarantee that light beam can be according to setting well Light direction outgoing.Simultaneously as Gauss scatters the scattering properties that color device is closed in light splitting, so that nearly directional light passes through its surface When, light beam meeting homogenous diffusion is at the small light beam with certain angle, and each small light beam convergence is superimposed, that is, foring has centainly Non-uniform light beam is carried out Gauss scattering and homogenized, so as to well by multi-colored led light by scattering angle and uniform big light beam The boundary of beam is blurred and is homogenized, and multi-colored led light beam is completely coincident, and the LED beam after homogenizing is guaranteeing light beam While center brightness, it can also make being more evenly distributed for light beam.

Further, the Gauss scatters light splitting and closes the Gaussian for being coated on color device and penetrating for different colours light Film.

Gauss scatters light splitting and closes the Gaussian film for being coated with different colours wave band light transmission rate on color device, i.e. high transmittance Wave band embodies Gauss transmission function, and high reflectance wave band embodies Gauss reflection function, is further ensured that by plating Gaussian film Gauss scatters the transmissison characteristic that color device is closed in light splitting, and since Gaussian film itself is very thin, thickness is far smaller than Gauss Scattering particles, and then the scattering properties of Gauss scattering particles can be presented, enable different light beams effectively through Gauss scattering point Photosynthetic color device guarantees color and the brightness of light beam, photosynthetic due to different colours in the case where the color of light beam is more At to be further ensured that the brightness between each color.

Further, it is Gaussian piece or frosted glass, the Gauss diffusion sheet that the Gauss, which scatters light splitting and closes color device, Or frosted glass has Gaussian scattering properties.

Relatively simple for structure, the processing technology simplicity of Gaussian piece and frosted glass, it is at low cost, and then this can be effectively ensured It is the optical system simple process of utility model, at low cost, more meet public demand.

The surface of Gaussian piece or frosted glass is coated with Gaussian film, and the glass surface of Gaussian piece or frosted glass is general It has smoothness on one surface, has bulky grain on one side, particle forms scattering properties, usually plates dichroic film in glass even surface, makes glass tape There is the characteristic of Transflective different colours, meanwhile, hair side has Gauss scattering properties, it is possible to further in obscured glass face Dichroic film is plated, or in the thinner scattering film more evenly of hair side plating particle, or not only plate dichroic film, but also plating scattering film in the same face Equal multiple combinations mode.

Further, the Gauss scatters light splitting and closes color device equipped with light-emitting surface and such as smooth surface, and at least one side has height The scattering properties of this type scattering.

In the utility model, the Gauss, which scatters light splitting conjunction color device, can be the scattering that wherein one side has Gauss scattering Characteristic is also possible to the scattering properties that two sides all has Gauss scattering, and then be effectively ensured light beam homogenizes effect.

Further, including two groups of mutually perpendicular LED light source arrays, the collimator lens array are correspondingly arranged at LED light On the light direction of source array, it is in 45 degree of angles that the Gauss, which scatters light splitting and closes color device and any LED light source array face, and right The light that wherein one group of LED light source array is issued carries out Gauss transmission, and the light issued to another group of LED light source array carries out high This reflection, so that the light that two groups of LED light source lens arrays are issued converges on same light direction, then poly- by collector lens Coke forms the hot spot of Gaussian Profile on default face.

In the utility model, two groups of LED light source arrays are orthogonal, and the color of two groups of LED light source arrays is different, and Gauss dissipates Light splitting conjunction color device is penetrated to be divided for the light of different colours.Before being not provided with Gauss and scattering light splitting conjunction color device, two It is in right-angled intersection after the collimated collimated of light beam that group LED light source array is issued, scatters light splitting in setting Gauss and close color dress After setting, wherein the light beam that a LED light source array is issued is emitted by former direction, but light splitting is scattered by Gauss and closes color device When, it is scattered light splitting conjunction color device progress Gauss scattering and homogenized by Gauss；And the light beam that another LED light source array is issued passes through When Gauss scatters light splitting conjunction color device, is scattered to be divided by Gauss and close color device Gauss reflection and homogenize, so that two LED light sources The light beam that array is issued is emitted according to same light direction, and is focused on default face by same collector lens, is formed high The hot spot of this distribution.

Further, the LED light source array being successively at right angles arranged including three groups and two groups of height in right-angled intersection setting Color device is closed in this scattering light splitting, and the collimator lens array is correspondingly arranged on the light direction of LED light source array, and described two groups Gauss, which scatters light splitting and closes color device, to be mutually inclined 45 degree and is located between two right angles of LED light source, and with LED light source array all at 45 degree of angles carry out Gauss transmission, to mutual to the light that the LED light source array vertical with other two groups of LED light source arrays issues The light that two groups of parallel LED light source arrays issue carries out Gauss reflection and Gauss transmission, so that three groups of LED light source lens are issued Light converge on same light direction, then focused on default face by collector lens, form the hot spot of Gaussian Profile.

In the utility model, three groups of LED light source arrays are successively at right angles distributed, i.e., forward and backward two groups of LED light source arrays are in pair To distribution, the LED beam issued is emitted before being not provided with Gauss and scattering light splitting conjunction color device in relative direction, Be arranged Gauss scatter light splitting close color device after, forward and backward two groups of LED beams by Gauss scatter light splitting close color device Gauss reflection, It transmits and homogenizes.Wherein, two groups of Gausses scattering light splitting conjunction color devices are divided into four parts, the first component by square crossing setting The first half of the first half of photosynthetic color device and the photosynthetic color device of the second component is orthogonal to be formed by angle, with centre LED light source array is opposite.

The light that preceding LED light source array issues closes the influence arranged in a crossed manner of color device, part LED since Gauss scatters light splitting Light source can first pass through the first half that color device is closed in the first light splitting, and the latter half of color device is closed using the second light splitting；And it is another A part of LED light source can be first passed through in the latter half for first passing through the second light splitting conjunction color device, close color dress using the first light splitting The latter half set.

And the light that preceding LED light source is issued first carries out anti-when first passing through the first half of the photosynthetic color device of the first component It penetrates, then when by the latter half of the photosynthetic color device of the second component, is scattered；First passing through the photosynthetic color device of the second component Latter half when, be first scattered, then by the photosynthetic color device of the first component latter half when, reflected.

The light that LED light source array issues afterwards, also due to Gauss, which scatters light splitting, closes the influence arranged in a crossed manner of color device, part LED light source can first pass through the first half that color device is closed in the second light splitting, and the latter half of color device is closed using the first light splitting；And Another part LED light source can be first passed through in the latter half for first passing through the first light splitting conjunction color device, close color using the second light splitting The latter half of device.

The then light that LED light source array is issued, it is advanced when first passing through the first half of the photosynthetic color device of the second component Row reflection, then when by the latter half of the photosynthetic color device of the first component, be scattered；First passing through the photosynthetic color of the first component It when the latter half of device, is first scattered, then when by the latter half of the photosynthetic color device of the second component, is reflected.

And the light that intermediate LED light source array is issued, it passes sequentially through two groups of Gausses and scatters light splitting Multiplexing apparatus, it is high by two groups This scattering light splitting Multiplexing apparatus carries out Gauss scattering and homogenizes, so that the light that three groups of LED light source arrays are issued is according to same One light direction is emitted, and finally by focusing on default face by collector lens, forms the hot spot of Gaussian Profile.

Further, the Gauss scatters light splitting conjunction color device and is made of two panels Gaussian piece right-angled intersection, the height This diffusion sheet at least one side has the scattering properties of Gaussian scattering, and is wherein coated with the Gaussian of different colours transmission on one side Film.

Compared with the prior art, the utility model have can be effectively ensured beam center brightness and to light beam into Row homogenizes, and simple process, beneficial effect at low cost.

Detailed description of the invention

Fig. 1 is the structural schematic diagram of the utility model embodiment 1.

Fig. 2 is 2 volume structural schematic diagram of the utility model embodiment.

Fig. 3 is that Gauss scatters the structural schematic diagram that color device is closed in light splitting in the utility model.

Specific embodiment

To keep the purpose of this utility model, technical solution and advantage clearer, with reference to the accompanying drawing to the utility model Embodiment is described in more detail.

Embodiment 1

As shown in Figure 1, a kind of optical system of multi-color LED light source, including two groups of LED light source arrays 11,12, every group of LED It include the LED chip of at least one color on array of source 11,12；It is correspondingly provided on the light direction of every group of LED light source array Two groups of collimator lens array, the LED chip one on collimation lens and LED light source array 11,12 on collimator lens array are a pair of It answers, so that the light beam that LED chip issues can be collimated into nearly collimated light beam after by collimation lens.

The orthogonal setting of LED light source array, between two LED light source arrays, i.e., on inclined 45 degree of angle It is provided with a Gauss and scatters light splitting conjunction color device, it is a Gaussian piece 13 that the Gauss, which scatters light splitting and closes color device,.

The nearly directional light 16 that LED light source array 11 issues when Gaussian piece 13 by reflecting；LED light source array The 12 nearly directional lights 15 issued are transmitted when passing through Gaussian piece 13, so that two LED light source arrays 11,12 issue Nearly directional light converge on same light direction, formed Ray Of Light 17, it is consistent with 17 light direction of light using being located at Collector lens 14 be focused on default face, form the hot spot of Gaussian Profile.

As shown in figure 3, it is Gaussian piece 13, Gaussian face that Gauss, which scatters light splitting and closes color device, in the present embodiment On be coated with the transmitance spectral line that the light of different colours wave band penetrates, i.e. Gaussian film 320.

Embodiment 2

As shown in Fig. 2, a kind of optical system of multi-color LED light source, the LED light source battle array being successively at right angles distributed including three groups Column 21,22,23, the light beam that two groups of LED light source arrays of front and rear 21,23 are issued are emitted in relative direction, intermediate LED light source battle array The light beam that the light beam that column 22 are issued is issued with forward and backward two groups of LED light source arrays 21,23 respectively goes out in right-angled intersection mode It penetrates, is equipped with and the corresponding collimation lens battle array of LED light source array 21,22,23 on the light direction of LED light source array 21,22,23 It arranges, the LED chip on the collimator lens unit and LED light source array of the collimator lens array corresponds, for LED core The light beam that piece issues carries out being collimated into nearly directional light.

Two groups of Gausses in right-angled intersection setting are set between the right angle of three groups of LED light source arrays 21,22,23 scatters light splitting Color device 24 is closed, the Gauss of the right-angled intersection setting scatters light splitting and closes color device 24 by two panels Gaussian piece 241,2,420 Word intersects composition.Two panels Gaussian piece 241,242 is divided into four parts, the first Gaussian piece by square crossing setting The first half of 241 first half and the second Gaussian piece is orthogonal to be formed by angle, with 22 gusts of intermediate LED light source Column are opposite.

The light that preceding LED light source array 21 issues closes the influence arranged in a crossed manner of color device 24, part since Gauss scatters light splitting LED light source can first pass through the first half of the first Gaussian piece 241, using the latter half of the second Gaussian piece 242； And another part LED light source can be first passed through in the latter half for first passing through the second Gaussian piece 242, be expanded using the first Gauss The latter half of discrete piece 241.

And the light that preceding LED light source is issued first carries out anti-when first passing through the first half of the first Gaussian piece 241 It penetrates, then when by the latter half of the second Gaussian piece 242, is scattered；First passing through the second Gaussian piece 242 It when latter half, is first scattered, then when by the latter half of the first Gaussian piece 241, is reflected.

The light that LED light source array 23 issues afterwards, also due to Gauss, which scatters light splitting, closes the influence arranged in a crossed manner of color device 24, Part LED light source can first pass through the first half of the second Gaussian piece 242, using the later half of the first Gaussian piece 241 Part；And another part LED light source can be first passed through in the latter half for first passing through the first Gaussian piece 241, using second The latter half of Gaussian piece 242.

The then light that LED light source array 23 is issued, when first passing through the first half of the second Gaussian piece 242, first It is reflected, then when by the latter half of the first Gaussian piece 241, is scattered；First passing through the first Gaussian It when the latter half of piece 241, is first scattered, then when by the latter half of the second Gaussian piece 242, is reflected.

And the light that intermediate LED light source array 22 is issued, two panels Gaussian piece 241,242 is passed sequentially through, by two panels height This diffusion sheet 241,242 carries out Gauss scattering and homogenizes, and former light direction is constant.Forward and backward LED light source array 21,23 is issued Light by Gauss scatter and reflect after, light direction change into centre the light direction of LED light source it is consistent so that three The light that group LED light source array 21,22 and 23 is issued is emitted according to same light direction, finally by passing through collector lens 25 focus on default face, form the hot spot of Gaussian Profile.

Claims

1. a kind of optical system of multi-color LED light source, including at least two groups LED light source array, on every group of LED light source array at least The LED chip luminescent color of a kind of LED chip comprising color, two groups of LED light source arrays is different；Further include and LED light source battle array Column are correspondingly arranged, collimator lens array of the beam collimation for exporting LED chip at nearly collimated light beam, the collimation lens The LED chip on each lens and LED light source array on array corresponds；It is characterized in that, further including being sequentially arranged at standard Gauss on collimating lens array light direction scatters light splitting and closes color device and collector lens, and the Gauss scatters light splitting and closes color device For converging and homogenizing the nearly directional light issued after the collimated lens array of several LED light source arrays, a branch of light side out is formed It is focused on default face to identical light, then through collector lens, forms the hot spot of Gaussian Profile.

2. the optical system of multi-color LED light source according to claim 1, which is characterized in that the Gauss scatters light splitting and closes The Gaussian film penetrated for different colours light is coated on color device.

3. the optical system of multi-color LED light source according to claim 1, which is characterized in that the Gauss scatters light splitting and closes Color device is Gaussian piece or frosted glass, and the Gaussian piece or frosted glass have Gaussian scattering properties.

4. the optical system of multi-color LED light source according to claim 3, which is characterized in that the Gauss scatters light splitting and closes Color device is equipped with light-emitting surface and incidence surface, and at least one side has the scattering properties of Gaussian scattering.

5. the optical system of multi-color LED light source according to claim 1, which is characterized in that mutually perpendicular including two groups LED light source array, the collimator lens array are correspondingly arranged on the light direction of LED light source array, and the Gauss scatters light splitting Color device and the inclined 45 degree of angles of any array of source are closed, and the light that wherein one group of LED light source array is issued is carried out high This transmission, the light issued to another group of LED light source array carries out Gauss reflection, so that two groups of LED light source lens arrays are sent out Light out converges on same light direction, then is focused on default face by collector lens, forms the hot spot of Gaussian Profile.

6. the optical system of multi-color LED light source according to claim 1, which is characterized in that successively rectangular including three groups The LED light source array of setting and two groups of Gausses in right-angled intersection setting scatter light splitting and close color device, the collimator lens array It is correspondingly arranged on the light direction of LED light source array, two groups of Gausses scattering light splitting conjunction color device is mutually inclined 45 degree and sets Between two right angles of LED light source, and in angle of 45 degrees with LED light source array, hang down to other two groups of LED light source arrays The light that straight LED light source array issues carries out Gauss transmission, carries out height to the light that two groups of LED light source arrays being parallel to each other issue This reflection and Gauss transmission, so that the light that three groups of LED light source lens are issued converges on same light direction, then pass through optically focused Lens focus forms the hot spot of Gaussian Profile on default face.

7. the optical system of multi-color LED light source according to claim 6, which is characterized in that the Gauss scatters light splitting and closes Color device is made of two panels Gaussian piece right-angled intersection, and the Gaussian piece at least one side has the scattering of Gaussian scattering Characteristic, and it is wherein coated with the Gaussian film of different colours transmission on one side.