CN108646326A - A kind of laser beam emitting device, diffusion piece preparation method and mobile terminal - Google Patents
A kind of laser beam emitting device, diffusion piece preparation method and mobile terminal Download PDFInfo
- Publication number
- CN108646326A CN108646326A CN201810404899.1A CN201810404899A CN108646326A CN 108646326 A CN108646326 A CN 108646326A CN 201810404899 A CN201810404899 A CN 201810404899A CN 108646326 A CN108646326 A CN 108646326A
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- indium oxide
- diffusion sheet
- laser
- tin film
- oxide tin
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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
-
- 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
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- 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
- G02B1/12—Optical coatings produced by application to, or surface treatment of, optical elements by surface treatment, e.g. by irradiation
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Laser Beam Processing (AREA)
Abstract
An embodiment of the present invention provides a kind of laser beam emitting device, diffusion piece preparation method and mobile terminal, laser beam emitting devices to include：Diffusion sheet, driving circuit and laser；Diffusion sheet includes the first surface and second surface being oppositely arranged, and first surface is arranged with laser face；The second surface of diffusion sheet is etched with the indium oxide tin film of preset pattern；The pin of indium oxide tin film is connect with driving circuit, wherein whether indium oxide tin film is abnormal for detecting diffusion sheet.The second surface in diffusion sheet is arranged according to preset pattern in indium oxide tin film in the embodiment of the present invention, for indium oxide tin film all covering diffusion sheet second surface, the transmitance of laser can be improved, to reduce the energy loss of laser.
Description
Technical field
The present invention relates to technical field of mobile terminals, more particularly to a kind of laser beam emitting device, diffusion piece preparation method
And mobile terminal.
Background technology
Laser beam emitting device in the prior art, by VCSEL (Vertical Cavity Surface Emitting
Laser, vertical cavity surface emitting laser) send out laser.The laser angle sent out due to VCSEL is usually at 5 ° to 20 °, Wu Faman
Sufficient VCSEL will cover the requirement of infrared lens field angle, therefore the laser that VCSEL modules are sent out will usually first pass through diffusion sheet,
Change the intensity distribution and light spot shape of light field by diffusion sheet.
When mobile terminal drops to the ground, it is possible to the abnormal conditions that the breakage of diffusion sheet can occur or fall off, at this time VCSEL
The laser sent out is likely to shine directly on face and causes to damage to human eye.
Invention content
The present invention provides a kind of laser beam emitting device, diffusion piece preparation method and mobile terminals, to solve the prior art
Present in diffusion sheet it is damaged or when falling off, the problem of the damage from laser human eye that VCSEL is sent out.
In order to solve the above-mentioned technical problem, the invention is realized in this way：A kind of laser beam emitting device, including：It is described to swash
Light emitting devices includes：Diffusion sheet, driving circuit and laser；The diffusion sheet includes the first surface being oppositely arranged and
Two surfaces, the first surface are arranged with the laser face；The second surface of the diffusion sheet is etched with preset pattern
Indium oxide tin film, wherein the edge of the indium oxide tin film includes at least one pin；The pin of the indium oxide tin film with
Driving circuit connects, wherein whether the indium oxide tin film is abnormal for detecting the diffusion sheet.
The embodiment of the present invention additionally provides a kind of diffusion piece preparation method, the method includes：The of diffusion sheet ontology
Plate amorphous state tin indium oxide in two surfaces；Wherein, the diffusion sheet ontology includes the first surface and second surface being oppositely arranged, institute
First surface is stated to be oppositely arranged with laser；Laser annealing is carried out according to preset pattern on the amorphous state tin indium oxide, with
The amorphous state tin indium oxide of the preset pattern is set to be converted into crystalline state indium oxide tin film；By etch process by amorphous state indium oxide
Tin film removes；At least one pin is plated in the edge of the indium oxide tin film, the pin is described for connecting driving circuit
Whether indium oxide tin film is abnormal for detecting the diffusion sheet ontology.
The embodiment of the present invention additionally provides a kind of mobile terminal, and the mobile terminal includes the laser beam emitting device.
In embodiments of the present invention, diffusion sheet includes the first surface and second surface being oppositely arranged, first surface with swash
Light device face is arranged；The second surface of diffusion sheet is etched with the indium oxide tin film of preset pattern；The pin of indium oxide tin film and drive
Dynamic circuit connection, when diffusion sheet occur it is damaged or fall off equal exception when, the impedance of indium oxide tin film can change, impedance variations
Driving circuit is fed back to, working condition of the driving circuit according to impedance variations situation control VCSEL is different to work as diffusion sheet generation
Chang Shi, control VCSEL stoppings send out laser, avoid causing to damage to human eye.In addition, by indium oxide tin film in the embodiment of the present invention
The second surface of diffusion sheet is etched according to preset pattern, compared to indium oxide tin film whole covering diffusion sheet second surface
Speech, can improve the transmitance of laser, to reduce the energy loss of laser.
Description of the drawings
Fig. 1 is a kind of structure diagram of laser beam emitting device of the embodiment of the present invention one；
Fig. 2 is a kind of step flow chart of diffusion piece preparation method of the embodiment of the present invention two；
Fig. 3 is the indium oxide tin film schematic diagram of the embodiment of the present invention.
Specific implementation mode
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation describes, it is clear that described embodiments are some of the embodiments of the present invention, instead of all the embodiments.Based on this hair
Embodiment in bright, the every other implementation that those of ordinary skill in the art are obtained without creative efforts
Example, shall fall within the protection scope of the present invention.
Embodiment one
Referring to Fig.1, a kind of structure diagram of laser beam emitting device of the embodiment of the present invention one is shown.
Laser beam emitting device provided in an embodiment of the present invention includes：Diffusion sheet 101, driving circuit 102 and laser
103；Diffusion sheet 101 includes the first surface 1011 being oppositely arranged and second surface 1012, and first surface 1011 and laser are just
To setting；The second surface 1012 of diffusion sheet 101 is etched with the indium oxide tin film 104 of preset pattern, wherein indium oxide tin film
Edge includes at least one pin；The pin of indium oxide tin film 104 is connect with driving circuit 102, wherein indium oxide tin film
Whether 104 is abnormal for detecting diffusion sheet 101, such as：Diffusion sheet 101 is damaged or falls off.
Wherein, indium oxide tin film 104, which is covered on the second surface of diffusion sheet, is presented preset pattern.Preset pattern can be
It is one of arbitrary in cross, square shape and concave shape, oxygen is flexibly arranged according to actual demand convenient for those skilled in the art
Change the graphics processing of indium tin film.As shown in figure 3, preset pattern can also be " H " shape.
Preferably, laser beam emitting device further includes holder 105 and cover board 106：Setting accommodates the recessed of laser on holder 105
Slot 1051；Diffusion sheet 101 is arranged in groove top, and 103 face diffusion sheet 101 of laser；Cover board 106 is arranged in tin indium oxide
In film surface.Laser is arranged in the groove of holder, it can be ensured that the fastness that laser is combined with holder.
In the indium oxide tin film of diffusion sheet surface local etching preset pattern in the present invention, compared on the surface of diffusion sheet
Whole face plating indium oxide tin film is capable of the capacity usage ratio of improving laser, reduces the energy loss of laser.Specifically, with 3mm*3mm
Diffusion sheet for, calculate whole face plating indium oxide tin film and H-type indium oxide tin film capacity usage ratio：
90% is set as the transmitance of 940nm diffusion sheets, the transmitance of indium oxide tin film is set as 85%, laser
The width of the hot spot of transmitting uses 0.5mm, it is assumed that the luminous normalized energy of laser is 1, then whole face indium oxide tin film scheme goes out
It is 1*0.9*0.85=0.738 to penetrate energy, and H-pattern tin indium oxide membrane area accounting is：(3*0.5*2+1.1*0.5)/3*3=
39.4%, emanated energy is 0.394*0.9*0.85+ (1-0.394) * 0.9=0.847, improves 10%.As it can be seen that the present invention is real
Laser can be improved in diffusion sheet second surface according to preset pattern etching indium oxide tin film by applying the laser beam emitting device of example offer
Capacity usage ratio and reduce laser energy loss.
The pin of indium oxide tin film is connect with driving circuit, and driving circuit is arranged in the terminal, when diffusion sheet breakage
Or when falling off, the impedance of indium oxide tin film can change, and impedance variations be fed back to driving circuit, driving circuit is according to impedance
The working condition of variation control laser, such as：When the impedance variations of indium oxide tin film are more than preset value, then driving circuit control
Laser processed is converted to close off state, causes to damage to human eye with the laser for preventing laser from sending out.
In embodiments of the present invention, diffusion sheet includes the first surface and second surface being oppositely arranged, first surface with swash
Light device face is arranged；The second surface of diffusion sheet is etched with the indium oxide tin film of preset pattern；The pin of indium oxide tin film and drive
Dynamic circuit connection, when diffusion sheet occur it is damaged or fall off equal exception when, the impedance of indium oxide tin film can change, impedance variations
Driving circuit is fed back to, working condition of the driving circuit according to impedance variations situation control VCSEL is different to work as diffusion sheet generation
Chang Shi, control VCSEL stoppings send out laser, avoid causing to damage to human eye.In addition, by indium oxide tin film in the embodiment of the present invention
The second surface of diffusion sheet is etched according to preset pattern, compared to indium oxide tin film whole covering diffusion sheet second surface
Speech, can improve the transmitance of laser, to reduce the energy loss of laser.
Embodiment two
With reference to Fig. 2, a kind of step flow chart of diffusion piece preparation method of the embodiment of the present invention two is shown.
Diffusion piece preparation method provided in an embodiment of the present invention includes the following steps：
Step 201：Amorphous state tin indium oxide is plated in the second surface of diffusion sheet ontology.
Wherein, diffusion sheet ontology includes the first surface and second surface being oppositely arranged, and first surface is opposite with laser
Setting.
Amorphous state tin indium oxide is plated in the second surface of diffusion sheet ontology, wherein default plated film by presetting coating process
Technique includes：At least one of sputter, vapor deposition and plating.
Sputter is under vacuum conditions, to be passed through inert gas appropriate as medium, lean on inert gas accelerating impact target,
So that target material surface atom is knocked out and forms plated film on surface.
Plating is to utilize electrolysis principle, and the process of the other metal or alloy of a thin layer is plated on certain metal surfaces, electricity
Plating is to make the technique that layer of metal film is adhered on the surface of metal or other materials product using electrolysis.
Vapor deposition is that material is heated to and is plated to technique on substrate, can be described as vacuum evaporation again in vacuum environment.
Step 202：On amorphous state tin indium oxide, laser annealing is carried out according to preset pattern, so that preset pattern is non-
Crystalline state tin indium oxide is converted into crystalline state indium oxide tin film.
The preset pattern of the indium oxide tin film covered on a second surface, can be by those skilled in the art according to reality
Demand is configured, and is not specifically limited to this in the embodiment of the present invention.Such as：It could be provided as cross, square shape, character cut in bas-relief
Shape or " H " shape etc..
Equipment using laser annealing is nanosecond laser, and usual laser facula is round presentation Gaussian Profile, intermediate energy
Amount high rim energy is low to be unfavorable for tin indium oxide annealing and needs to carry out shaping, therefore can send out nanosecond laser in annealing
Laser first passes through beam shaping, and the effect of beam shaping changes light distribution and the shape of laser, flat-top distribution is presented
Rectangle or square focus spot, and the energy of hot spot is equal.
Preset pattern includes but not limited to one of arbitrary in cross, square shape and concave shape.
Step 203：Amorphous state indium oxide tin film is removed by etch process.
Etching is the technology by materials'use chemical reaction or physical shock effect and removal.
Step 204：At least one pin is plated in the edge of indium oxide tin film.
Wherein, pin is for connecting driving circuit, and whether extremely indium oxide tin film for detecting diffusion sheet ontology, diffusion sheet
For laser beam emitting device.
In embodiments of the present invention, in the indium oxide tin film for being etched with preset pattern of the second surface of diffusion sheet ontology,
Wherein, diffusion sheet ontology includes the first surface and second surface being oppositely arranged, and first surface is oppositely arranged with laser；In oxygen
Plate at least one pin in the edge for changing indium tin film, wherein pin expands for connecting driving circuit, indium oxide tin film for detecting
Whether discrete piece ontology abnormal, when diffusion sheet occur it is damaged or fall off equal exception when, the impedance of indium oxide tin film can change, and hinder
Resistance feeds back to driving circuit, working condition of the driving circuit according to impedance variations situation control VCSEL, to work as diffusion sheet
When being abnormal, control VCSEL stoppings send out laser, avoid causing to damage to human eye.By tin indium oxide in the embodiment of the present invention
Film is etched in the second surface of diffusion sheet according to preset pattern, compared to indium oxide tin film whole covering diffusion sheet second surface
Speech, can improve the transmitance of laser, to reduce the energy loss of laser.In addition, indium oxide is arranged according to preset pattern
Tin film, the further energy loss for reducing laser.
Each embodiment in this specification is described in a progressive manner, the highlights of each of the examples are with
The difference of other embodiment, the same or similar parts between the embodiments can be referred to each other.For system embodiment
For, since it is basically similar to the method embodiment, so description is fairly simple, referring to the portion of embodiment of the method in place of correlation
It defends oneself bright.
Above to a kind of laser beam emitting device provided by the present invention, diffusion piece preparation method and mobile terminal, carry out
It is discussed in detail, principle and implementation of the present invention are described for specific case used herein, above example
Illustrate the method and its core concept for being merely used to help understand the present invention；Meanwhile for those of ordinary skill in the art, according to
According to the thought of the present invention, there will be changes in the specific implementation manner and application range, in conclusion the content of the present specification
It should not be construed as limiting the invention.
Claims (7)
1. a kind of laser beam emitting device, which is characterized in that the laser beam emitting device includes：Diffusion sheet, driving circuit and swash
Light device；
The diffusion sheet includes the first surface and second surface being oppositely arranged, and the first surface is set with the laser face
It sets；
The second surface of the diffusion sheet is etched with the indium oxide tin film of preset pattern, wherein the edge of the indium oxide tin film
Place includes at least one pin；
The pin of the indium oxide tin film is connect with the driving circuit, wherein the indium oxide tin film is for detecting the expansion
Whether discrete piece is abnormal.
2. laser beam emitting device according to claim 1, which is characterized in that the preset pattern is cross, square shape
And it is one of arbitrary in concave shape.
3. laser beam emitting device according to claim 1, which is characterized in that the laser beam emitting device further include holder and
Cover board：
Setting accommodates the groove of laser on the holder；
The diffusion sheet is arranged in the groove top, and diffusion sheet described in the laser face；
The cover board is arranged in the tin indium oxide film surface.
4. a kind of diffusion piece preparation method, which is characterized in that the method includes：
Amorphous state tin indium oxide is plated in the second surface of diffusion sheet ontology；Wherein, the diffusion sheet ontology includes being oppositely arranged
First surface and second surface, the first surface are oppositely arranged with laser；
Laser annealing is carried out according to preset pattern on the amorphous state tin indium oxide, so that the amorphous state oxygen of the preset pattern
Change indium tin and is converted into crystalline state indium oxide tin film；
Amorphous state indium oxide tin film is removed by etch process,；In the edge of the indium oxide tin film, plating is at least one draws
Foot, wherein the pin, for connecting driving circuit, whether the indium oxide tin film is abnormal for detecting the diffusion sheet ontology.
5. according to the method described in claim 4, it is characterized in that, the second surface in diffusion sheet ontology plates amorphous
The step of state tin indium oxide, including：
Amorphous state tin indium oxide is plated in the second surface of the diffusion sheet ontology, wherein default plated film by presetting coating process
Technique includes：At least one of sputter, vapor deposition and plating.
6. a kind of mobile terminal, which is characterized in that the mobile terminal includes the laser hair described in any one of claim 1-3
Injection device.
7. mobile terminal according to claim 6, which is characterized in that the mobile terminal includes mobile phone, tablet computer, leads
Navigate at least one of instrument.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201810404899.1A CN108646326A (en) | 2018-04-28 | 2018-04-28 | A kind of laser beam emitting device, diffusion piece preparation method and mobile terminal |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810404899.1A CN108646326A (en) | 2018-04-28 | 2018-04-28 | A kind of laser beam emitting device, diffusion piece preparation method and mobile terminal |
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| CN108646326A true CN108646326A (en) | 2018-10-12 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201810404899.1A Pending CN108646326A (en) | 2018-04-28 | 2018-04-28 | A kind of laser beam emitting device, diffusion piece preparation method and mobile terminal |
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Cited By (1)
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| WO2020197496A1 (en) * | 2019-03-27 | 2020-10-01 | Ams Sensors Singapore Pte. Ltd. | Safety interlock system for illumination systems |
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| US20170192246A9 (en) * | 2006-04-06 | 2017-07-06 | Sbg Labs Inc. | Laser illumination device |
| CN103869474A (en) * | 2012-12-17 | 2014-06-18 | 财团法人工业技术研究院 | Light beam generating device |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| WO2020197496A1 (en) * | 2019-03-27 | 2020-10-01 | Ams Sensors Singapore Pte. Ltd. | Safety interlock system for illumination systems |
| CN113677933A (en) * | 2019-03-27 | 2021-11-19 | ams传感器新加坡私人有限公司 | Safety interlock system for lighting system |
| US11614227B2 (en) | 2019-03-27 | 2023-03-28 | Ams Sensors Singapore Pte. Ltd. | Safety interlock system for illumination systems |
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Application publication date: 20181012 |
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