CN105607168A - Laser diffuser - Google Patents
Laser diffuser Download PDFInfo
- Publication number
- CN105607168A CN105607168A CN201610177204.1A CN201610177204A CN105607168A CN 105607168 A CN105607168 A CN 105607168A CN 201610177204 A CN201610177204 A CN 201610177204A CN 105607168 A CN105607168 A CN 105607168A
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- CN
- China
- Prior art keywords
- diffusion sheet
- matrix
- laser
- structural
- microns
- 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.)
- Pending
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Classifications
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B5/00—Optical elements other than lenses
- G02B5/02—Diffusing elements; Afocal elements
- G02B5/0205—Diffusing elements; Afocal elements characterised by the diffusing properties
- G02B5/021—Diffusing elements; Afocal elements characterised by the diffusing properties the diffusion taking place at the element's surface, e.g. by means of surface roughening or microprismatic structures
- G02B5/0221—Diffusing elements; Afocal elements characterised by the diffusing properties the diffusion taking place at the element's surface, e.g. by means of surface roughening or microprismatic structures the surface having an irregular structure
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B1/00—Optical elements characterised by the material of which they are made; Optical coatings for optical elements
- G02B1/10—Optical coatings produced by application to, or surface treatment of, optical elements
- G02B1/11—Anti-reflection coatings
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B5/00—Optical elements other than lenses
- G02B5/02—Diffusing elements; Afocal elements
- G02B5/0273—Diffusing elements; Afocal elements characterized by the use
- G02B5/0278—Diffusing elements; Afocal elements characterized by the use used in transmission
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Optical Elements Other Than Lenses (AREA)
Abstract
The invention relates to a laser diffuser. The laser diffuser comprises a matrix made of glass, the matrix comprises a first surface and a second surface which are opposite to each other, an optical structure is formed on the first surface of the matrix, the optical structure comprises a plurality of cellular microstructures arranged closely, and the cellular microstructures are concave structures sunken inwards from the first surface of the matrix.
Description
Technical field
The present invention relates to diffusion sheet technical field, relate in particular to a kind of laser diffusion sheet.
Background technology
Diffusion sheet (Diffuser), for light is dispersed, provides a uniform area source, thereby throws light at LEDWith in FPD, be used widely. The material of existing diffusion sheet have resin material (as PET, PC,And glass material PMMA). The transmissivity of existing resin diffusion sheet is low, and outgoing light field is uncontrollable, and depositsIn defects such as " focuses ", can not be applied to laser system. Glass diffusion sheet is divided into frosted glass type, holographicAnd microlens array type. Frosted glass type glass diffusion sheet, inevitably sub-owing to existing in processSurface tear, it can cause the breakage of eyeglass even to burst under the effect of light laser, and can not be used as laserSystem. The preparation cost costliness of holographic glass diffusion sheet, is only applicable to small breadth sample. Microlens array typeAlthough glass diffusion sheet transmissivity is high, preparation cost costliness.
Summary of the invention
In view of this, necessaryly provide a kind of transmissivity high and can bear the diffusion sheet of strong laser irradiation.
The invention provides a kind of laser diffusion sheet, it comprises matrix, and the material of this matrix is glass, described baseBody comprises the first surface that is oppositely arranged and second, and the first surface of this matrix is formed with an optical texture, described inOptical texture comprises multiple cellular micro-structurals of closely arranging, and this cellular micro-structural is by first of matrixThe concavity structure forming towards sunken inside.
Preferably, the cup depth of described cellular micro-structural is 100 microns～150 microns.
Preferably, the diameter of described cellular micro-structural is 1 micron～10 microns.
Preferably, the diameter of described cellular micro-structural is 2 microns～8 microns.
Preferably, the second face of this matrix is formed with described optical texture.
Preferably, the second face of this matrix is provided with anti-reflection film.
Preferably, the angle of flare of described laser diffusion sheet is 1 °～13 °.
Compared with prior art, laser diffusion sheet provided by the invention has the following advantages:
First surface at matrix is provided with optical texture, and this optical texture is multiple closely arrange cellular micro-Structure, this cellular micro-structural is by the first surface of the matrix concavity structure forming that caves inward. With respect to biographySystem microlens array type diffusion sheet is similar to positive lens, and this laser diffusion sheet with optical texture is similarIn negative lens structure, can realize swashing the folding diffraction of laser light wave by the cellular micro-structural of this umbilicate typeThe good diffusion of light light wave, thereby can bear strong laser irradiation and penetrate, transmissivity is high, and can basisConcrete instructions for use adjustment diffusion angle, light field and spatial distribution. Described laser diffusion sheet has good answeringUse prospect.
Brief description of the drawings
Fig. 1 and Fig. 2 are the microphotograph of described laser diffusion sheet.
Fig. 3 is the test schematic diagram of the angle of flare of described laser diffusion sheet.
Fig. 4 is the laser effect figure obtaining while not putting diffusion sheet in Fig. 3.
Fig. 5 is the laser effect figure obtaining while placing common optical glass in Fig. 3.
Fig. 6 is the laser effect figure obtaining while placing laser diffusion sheet of the present invention in Fig. 3.
Fig. 7 is described laser diffusion sheet and light transmittance resolution chart (wherein, the curve a couple that adds anti-reflection filmYing Yuwei arranges the laser diffusion sheet of anti-reflection film, and curve b is provided with the laser diffusion sheet of anti-reflection film corresponding to one side,Curve c is equipped with the laser diffusion sheet of anti-reflection film corresponding to two sides).
Following specific embodiment further illustrates the present invention in connection with above-mentioned accompanying drawing.
Detailed description of the invention
Below will be described further laser diffusion sheet provided by the invention.
Refer to Fig. 1 and Fig. 2, the invention provides a kind of laser diffusion sheet, it comprises matrix, the material of this matrixMaterial is glass. Described matrix comprises the first surface that is oppositely arranged and second. The first surface of this matrix is formed withOne optical texture. Described optical texture comprises multiple cellular micro-structurals of closely arranging, this cellular micro-knotStructure is by the first surface of the matrix concavity structure forming that caves inward. Concrete, the interposition of this concavity structureThe cup depth of putting is darker than the cup depth of its peripheral position, and this concavity structure is similar to an orbicule and is pressed on softMud ground after the concavity structure that forms. Described closely arranging refers to the cellular micro-structural part of these adjacent twoContact, and form a ridge, now can be analogous to the identical or different spheroid of multiple diameters and be pressed on soft simultaneouslyMud ground after multiple concavity structures of forming. Diameter and the degree of depth of two adjacent cellular micro-structurals can be notWith, also can be identical. In actual fabrication process, most two adjacent cellular micro-structurals straightFootpath and the degree of depth be not for identical. The reason that this cellular micro-structural is concavity structure depends on concrete technology, at thisDo not repeat.
Utilize interferometric method can verify the micro-structural that this cellular micro-structural is a depression. Described cellular micro-structuralCup depth be 100 microns～150 microns. Preferably, the cup depth of described cellular micro-structural is 125Micron ± 5 microns. In this enforcement, the cup depth of described cellular micro-structural is about 125 microns. Described thinThe diameter of born of the same parents' shape micro-structural is 1 micron～10 microns. Preferably, the diameter of described cellular micro-structural is 2 micro-Rice～8 microns. The object of the parameter designing of this cellular micro-structural is to have to the laser diffusion sheet of this parameterCan there is good transmissivity, and can bear strong laser irradiation and penetrate.
Refer to Fig. 3, described laser diffusion sheet is carried out to angle of flare test (test process). In Fig. 3, θ tableShow angle of flare, L represents the distance between diffusion sheet and test panel, and D represents the laser light receiving on test panelThe diameter of spot, d represents the diameter of the laser beam of incident, it meets following formula:
The computing formula of angle of flare θ is:
The embodiment of the present invention is tested described laser diffusion sheet, and obtaining its angle of flare is 1 °～13 °.
The laser facula obtaining on test panel after test as shown in Figure 6. It should be noted that Fig. 4 to Fig. 5For the design sketch of taking in a side of diffusion sheet. With respect to not putting diffusion sheet (Fig. 4), and place commonThe hot spot that optical glass (Fig. 5) obtains, the diameter of the laser facula that this method obtains increases greatly,This illustrates that described laser diffusion sheet has excellent optics diffusion.
The second face that is appreciated that this matrix also can be formed with described optical texture, i.e. two of this matrix facesBe equipped with described cellular micro-structural. Now, compare only one side described optical texture is set, two sides is equalIf the laser diffusion sheet of optical texture is similar to a negative lens structure more, it has better light transmission.
In the time that the first surface of described laser diffusion sheet is provided with optical texture, the light transmittance of described laser diffusion sheet canMore than 90%, concrete, to the light transmittance of infrared-ultraviolet light more than 90%, to the light transmittance of light laserMore than 92%. The first surface of this matrix and second also can be provided with anti-reflection film. When further swashing describedWhen anti-reflection film is established on two surfaces of light diffusing sheet, the light transmittance of described laser diffusion sheet can reach 98%. Described increasingPermeable membrane is existing anti-reflection film, does not repeat them here.
Refer in Fig. 7, (curve light transmittance a) is up to 92%, and is being provided with for described laser diffusion sheetAfter anti-reflection film, (curve b and c), light transmittance increases. When its two sides be equipped with anti-reflection film (corresponding toCurve transmissivity c) is up to more than 98%.
Compared with prior art, laser diffusion sheet provided by the invention has the following advantages:
First surface at matrix is provided with optical texture, and this optical texture is multiple closely arrange cellular micro-Structure, this cellular micro-structural is by the first surface of the matrix concavity structure forming that caves inward. With respect to biographySystem microlens array type diffusion sheet is similar to positive lens, and this laser diffusion sheet with optical texture is similarIn negative lens structure, can realize swashing the folding diffraction of laser light wave by the cellular micro-structural of this umbilicate typeThe good diffusion of light light wave, thereby can bear strong laser irradiation and penetrate, transmissivity is high, and can basisConcrete instructions for use adjustment diffusion angle, light field and spatial distribution. Described laser diffusion sheet has good answeringUse prospect.
The explanation of above embodiment is just for helping to understand method of the present invention and core concept thereof. Should refer toGo out, for those skilled in the art, under the premise without departing from the principles of the invention, alsoCan carry out some improvement and modification to the present invention, these improvement and modify and also fall into the claims in the present inventionIn protection domain.
To the above-mentioned explanation of the disclosed embodiments, make professional and technical personnel in the field can realize or use thisInvention. To be apparent for those skilled in the art to the multiple amendment of these embodiment,General Principle as defined herein can be in the situation that not departing from the spirit or scope of the present invention, at otherIn embodiment, realize. Therefore, the present invention will can not be restricted to these embodiment shown in this article, but wantMeet the widest scope consistent with principle disclosed herein and features of novelty.
Claims (7)
1. a laser diffusion sheet, it comprises matrix, the material of this matrix is glass, it is characterized in that instituteState matrix and comprise the first surface that is oppositely arranged and second, the first surface of this matrix is formed with an optical texture,Described optical texture comprises multiple cellular micro-structurals of closely arranging, and this cellular micro-structural is by matrixFirst surface cave inward form concavity structure.
2. laser diffusion sheet as claimed in claim 1, is characterized in that, described cellular micro-structural recessedThe sunken degree of depth is 100 microns～150 microns.
3. laser diffusion sheet as claimed in claim 1, is characterized in that, described cellular micro-structural straightFootpath is 1 micron～10 microns.
4. laser diffusion sheet as claimed in claim 3, is characterized in that, described cellular micro-structural straightFootpath is 2 microns～8 microns.
5. laser diffusion sheet as claimed in claim 1, is characterized in that, the second face of this matrix is formed withDescribed optical texture.
6. laser diffusion sheet as claimed in claim 1, is characterized in that, the second face of this matrix is provided withAnti-reflection film.
7. laser diffusion sheet as claimed in claim 1, is characterized in that, the diffusion of described laser diffusion sheetAngle is 1 °～13 °.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610177204.1A CN105607168A (en) | 2016-03-25 | 2016-03-25 | Laser diffuser |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610177204.1A CN105607168A (en) | 2016-03-25 | 2016-03-25 | Laser diffuser |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105607168A true CN105607168A (en) | 2016-05-25 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610177204.1A Pending CN105607168A (en) | 2016-03-25 | 2016-03-25 | Laser diffuser |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002333509A (en) * | 2001-05-10 | 2002-11-22 | Keiwa Inc | Optical diffusion sheet and backlight unit using the same |
| CN1603908A (en) * | 2003-10-02 | 2005-04-06 | 阿尔卑斯电气株式会社 | Reflector and liquid crystal display device using the same |
| CN101231462A (en) * | 2008-02-27 | 2008-07-30 | 苏州大学 | Light scattering slice and preparation method thereof |
| JP2015109213A (en) * | 2013-12-05 | 2015-06-11 | 五洋紙工株式会社 | Lens sheet and el light-emitting device |
| CN104871043A (en) * | 2012-12-28 | 2015-08-26 | 旭硝子株式会社 | Optical element, projection device, and manufacturing method for optical element |
-
2016
- 2016-03-25 CN CN201610177204.1A patent/CN105607168A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002333509A (en) * | 2001-05-10 | 2002-11-22 | Keiwa Inc | Optical diffusion sheet and backlight unit using the same |
| JP4970663B2 (en) * | 2001-05-10 | 2012-07-11 | 恵和株式会社 | Light diffusion sheet and backlight unit using the same |
| CN1603908A (en) * | 2003-10-02 | 2005-04-06 | 阿尔卑斯电气株式会社 | Reflector and liquid crystal display device using the same |
| CN101231462A (en) * | 2008-02-27 | 2008-07-30 | 苏州大学 | Light scattering slice and preparation method thereof |
| CN104871043A (en) * | 2012-12-28 | 2015-08-26 | 旭硝子株式会社 | Optical element, projection device, and manufacturing method for optical element |
| JP2015109213A (en) * | 2013-12-05 | 2015-06-11 | 五洋紙工株式会社 | Lens sheet and el light-emitting device |
Non-Patent Citations (1)
| Title |
|---|
| 孟祥翔等: "激光投影显示中新型散射体的散斑抑制", 《红外与激光工程》 * |
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Application publication date: 20160525 |
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| RJ01 | Rejection of invention patent application after publication |