CN109755851A - Internal cutting off light path type laser and control method - Google Patents
Internal cutting off light path type laser and control method Download PDFInfo
- Publication number
- CN109755851A CN109755851A CN201711086509.2A CN201711086509A CN109755851A CN 109755851 A CN109755851 A CN 109755851A CN 201711086509 A CN201711086509 A CN 201711086509A CN 109755851 A CN109755851 A CN 109755851A
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- laser
- light
- internal cutting
- path type
- light path
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Abstract
The invention discloses a kind of internal cutting off light path type lasers, including resonant cavity and the mechanical optical shutter being fixed in resonant cavity, the mechanical optical shutter includes pedestal, rotating electromagnet on the pedestal is set, light barrier on the rotating electromagnet is set, and the photoelectric sensor to sense the light-blocking Board position, wherein the light barrier is made of high thermal conductive metallic material.In mechanical optical shutter installation of the invention and resonant cavity, realize that blocking laser is generated by directly destroying the starting condition for oscillation of laser, that is light barrier flash disruption laser starting condition for oscillation, there is no laser generations, also there would not be heat generation again, by the light barrier using high thermal conductive metallic material, the magnetism servo-electric motor water-cooling of conventional mechanical optical gate can be saved, simplifies structure.
Description
Technical field
The present invention relates to field of laser device technology, more particularly to a kind of internal cutting off light path type laser and control method.
Background technique
Carrying out spring lock light when high-power laser exports in is relatively difficult thing, main reason is that laser beam
With very strong directionality, the small heat height of hot spot can all generate heat to the long term device irradiation of blocking, damage.
Mechanical optical shutter is a kind of device that the laser for generating laser generator passes through and blocks, and purpose is exactly that lathe exists
The transmission of blocking laser when lost motion, prevents laser to the abnormal damage of steel plate；Occur alarming in lathe or when failure can
With the transmission of timely blocking laser, prevent from causing unnecessary injury.
Existing mechanical optical shutter is usually that the laser of output is truncated, and laser is radiated on light barrier for a long time, this
It is just cooled down, leads to that structure is complicated, use cost is high.
Summary of the invention
In view of the technical drawbacks of the prior art, it is an object of the present invention to provide a kind of internal cutting off light path type laser
Device.
The technical solution adopted to achieve the purpose of the present invention is:
A kind of internal cutting off light path type laser, it is described including resonant cavity and the mechanical optical shutter being fixed in resonant cavity
Mechanical optical shutter include pedestal, the rotating electromagnet on the pedestal is set, is arranged on the rotating electromagnet
Light barrier, and the photoelectric sensor to sense the light-blocking Board position, wherein the light barrier is by high-termal conductivity gold
Belong to material to be made.
The photoelectric sensor is U-shaped photoelectric sensor.
The mechanical optical shutter is arranged between pump module and preceding mirror.
The light barrier is made of red copper material.
It further include the Q-switch being arranged in resonant cavity.
The Q-switch is arranged after resonant cavity in front of mirror.
Bracket is provided on the pedestal, the rotating electromagnet is arranged on the bracket, and described is light-blocking
Plate is fixedly connected with the rotating electromagnet and can rotate to above bracket to block optical path, the U-shaped photoelectric sensor
It is arranged immediately below rotating electromagnet.
The rotating electromagnet is Self-resetting rotating electromagnet.
It further include that the mechanical optical shutter is accommodated into sealed compartment therein, sealed compartment front and back corresponding with light barrier
Fenestrate mirror is set on side to allow optical path to pass through.
The window mirror is the high lens of anti-reflection film.
The sealed compartment is fixedly connected with the resonant cavity, alternatively, the sealed compartment and the mechanical optical shutter
It is connected to one.
A kind of control method of the internal cutting off light path type laser, includes the following steps,
1) when mechanical optical shutter is powered, light barrier is moved to optical path open position, and laser beam is allowed to pass through and generate sharp
Light；
2) when mechanical optical shutter powers off, rotating electromagnet reset spring pulls light barrier to optical path closed position, prevents to swash
Light light beam passes through, and destroys the starting condition for oscillation of laser directly to realize that blocking laser generates.Compared with prior art,
The beneficial effects of the present invention are:
In mechanical optical shutter installation of the invention and resonant cavity, realize that blocking swashs by directly destroying the starting condition for oscillation of laser
Light generates, i.e. light barrier flash disruption laser starting condition for oscillation, and there is no laser generation, would not also there is heat generation again, logical
The light barrier using high thermal conductive metallic material is crossed, the magnetism servo-electric motor water-cooling of conventional mechanical optical gate can be saved, simplifies structure.
Detailed description of the invention
Fig. 1 show the structural schematic diagram of internal cutting off light path type laser of the invention.
Fig. 2 show mechanical optical shutter control structure schematic diagram.
Specific embodiment
The present invention is described in further detail below in conjunction with the drawings and specific embodiments.It should be appreciated that described herein
Specific embodiment be only used to explain the present invention, be not intended to limit the present invention.
As shown, internal cutting off light path type laser of the invention includes resonant cavity 4 and is fixed in resonant cavity
Mechanical optical shutter 5, the preferably mechanical optical shutter are arranged between pump module 41 and preceding mirror 42.The mechanical optical shutter includes solid
Pedestal 51 in resonant cavity is set calmly, the rotating electromagnet 54 on the pedestal is set, the electric rotating is set
Light barrier 52 on magnet, and the photoelectric sensor 53 to sense the light-blocking Board position, wherein the light barrier
It is made of high thermal conductive metallic material, such as red copper, brass.
The mechanical optical shutter unit is mainly made of Self-resetting rotating electromagnet and photoelectric sensor.By in rotating electromagnetic
One light barrier 52 is installed on iron 54, when rotating electromagnet 54, such as M3013418R type rotating electromagnet, when rotating an angle,
The blocking for realizing laser output, when rotating electromagnet 54 resets, laser output is released again.Photoelectric sensor 53 is used for
The physical location for detecting light barrier 52 can be used for relieving and the blocking state of the output of real-time detection present laser, be different from existing
Mechanical optical shutter, mechanical optical shutter unit 5 of the present invention are installed on the intra resonant cavity of the cabin of solid state laser.
In mechanical optical shutter installation of the invention and resonant cavity, realize that blocking swashs by directly destroying the starting condition for oscillation of laser
Light generates, i.e. light barrier flash disruption laser starting condition for oscillation, and there is no laser generation, would not also there is heat generation again, logical
The light barrier using high thermal conductive metallic material is crossed, the magnetism servo-electric motor water-cooling of conventional mechanical optical gate can be saved, simplifies structure.The present invention
Mechanical optical shutter is using the processing of the materials such as the red copper of high thermal conductivity, according to the intracavitary light path design of solid state laser, mechanical dimension
Baffle is simply installed on rotating electromagnet by small, simple structure and convenient processing, install convenient, and blocks optical path wink
Between free from dust.
Further, it is provided with the plate-shaped carrier being vertically arranged on the pedestal, the Self-resetting rotating electromagnet,
It is arranged on the bracket such as M3012418R, the light barrier is fixedly connected with the rotating electromagnet and upper end can
To block optical path, the U-shaped photoelectric sensor, as PM-24F is arranged immediately below rotating electromagnet above rotation to bracket.
Wherein, the control circuit of mechanical optical shutter is controllably connect by interface unit with control unit, the control circuit include to
The solenoid actuated output unit that output electric current drives electromagnet, and communicate and connect with the U-shaped photoelectric sensor
The NPN signal input module connect.Using strip light barrier, is extended to when light barrier is vertical and carry out optical path resistance above bracket
It is disconnected, while light barrier lower end is protruded between U-shaped photoelectric sensor, Real-time Feedback blocking state, realizes control closed loop.
Further, further include two vertically disposed Q-switch 43,44 being arranged in resonant cavity, that is, constitute two-dimentional Q-switch
Mould group, the Q-switch are arranged after resonant cavity 45 front of mirror, by the combination of Q-switch and mechanical switch, can expand blocking
Effect realizes the various modes such as quickly cutting, safety cut-off and pulse laser output.
It preferably, further include that the mechanical optical shutter is accommodated into sealed compartment 55 therein, the sealed compartment and light barrier
Fenestrate mirror 56 is set on corresponding front and back sides.Preferably, the window mirror is the high lens of anti-reflection film.
Wherein, the sealed compartment is fixedly connected with the resonant cavity, alternatively, the sealed compartment and the machinery
Optical gate is connected to one.The preferred internal holding negative pressure of the sealed compartment.
Mechanical optical shutter uses the sealed compartment of all-sealed structure, uses the high lens of anti-reflection film as window before and after mechanical optical shutter
Mirror not only will not influence laser optical path, but also entire executing agency sealed, a variety of in conjunction with the selection of light barrier metal material
Measure avoids tiny dust from escaping into resonant cavity.
The above is only a preferred embodiment of the present invention, it is noted that for the common skill of the art
For art personnel, various improvements and modifications may be made without departing from the principle of the present invention, these improvements and modifications
Also it should be regarded as protection scope of the present invention.
Claims (12)
1. a kind of internal cutting off light path type laser, which is characterized in that including resonant cavity and the machinery being fixed in resonant cavity
Optical gate, the mechanical optical shutter include pedestal, and the rotating electromagnet on the pedestal is arranged in, and the electric rotating is arranged in
Light barrier on magnet, and the photoelectric sensor to sense the light-blocking Board position, wherein the light barrier is by height
Conductive metal material is made.
2. internal cutting off light path type laser as described in claim 1, which is characterized in that the photoelectric sensor is U-shaped light
Electric transducer.
3. internal cutting off light path type laser as described in claim 1, which is characterized in that the mechanical optical shutter setting is pumping
Between module and preceding mirror.
4. internal cutting off light path type laser as described in claim 1, which is characterized in that the light barrier is by red copper material system
At.
5. internal cutting off light path type laser as described in claim 1, which is characterized in that further include the Q being arranged in resonant cavity
Switch.
6. internal cutting off light path type laser as claimed in claim 5, which is characterized in that the Q-switch is arranged in resonant cavity
Afterwards in front of mirror.
7. internal cutting off light path type laser as claimed in claim 2, which is characterized in that it is provided with bracket on the pedestal,
The rotating electromagnet is arranged on the bracket, and the light barrier is fixedly connected with the rotating electromagnet and can
To block optical path above rotation to bracket, the U-shaped photoelectric sensor is arranged immediately below rotating electromagnet.
8. internal cutting off light path type laser as claimed in claim 7, which is characterized in that the rotating electromagnet is Self-resetting
Rotating electromagnet.
9. internal cutting off light path type laser as described in claim 1, which is characterized in that further include holding the mechanical optical shutter
It receives sealed compartment therein, fenestrate mirror is set to allow optical path to pass through on sealed compartment front and back sides corresponding with light barrier.
10. internal cutting off light path type laser as claimed in claim 9, which is characterized in that the window mirror is that anti-reflection film is high thoroughly
Eyeglass.
11. internal cutting off light path type laser as claimed in claim 9, which is characterized in that the sealed compartment with it is described humorous
Vibration chamber is fixedly connected, alternatively, the sealed compartment is connected to one with the mechanical optical shutter.
12. a kind of control method of such as described in any item internal cutting off light path type lasers of claim 1-11, which is characterized in that
Include the following steps,
1) when mechanical optical shutter is powered, light barrier is moved to optical path open position, and laser beam is allowed to pass through and generate laser；
2) when mechanical optical shutter powers off, rotating electromagnet reset spring pulls light barrier to optical path closed position, prevents laser light
Beam passes through, and destroys the starting condition for oscillation of laser directly to realize that blocking laser generates.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711086509.2A CN109755851A (en) | 2017-11-07 | 2017-11-07 | Internal cutting off light path type laser and control method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711086509.2A CN109755851A (en) | 2017-11-07 | 2017-11-07 | Internal cutting off light path type laser and control method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109755851A true CN109755851A (en) | 2019-05-14 |
Family
ID=66400226
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711086509.2A Pending CN109755851A (en) | 2017-11-07 | 2017-11-07 | Internal cutting off light path type laser and control method |
Country Status (1)
| Country | Link |
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| CN (1) | CN109755851A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112542763A (en) * | 2019-09-20 | 2021-03-23 | 山东华光光电子股份有限公司 | Indicating device for laser |
Citations (6)
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|---|---|---|---|---|
| CN101493631A (en) * | 2008-01-24 | 2009-07-29 | 鸿富锦精密工业（深圳）有限公司 | Mechanical shutter and camera module using the mechanical shutter |
| CN201349091Y (en) * | 2008-12-18 | 2009-11-18 | 武汉楚天激光（集团）股份有限公司 | Power monitoring optical shutter device located outside laser resonant cavity |
| CN202655800U (en) * | 2012-05-15 | 2013-01-09 | 武汉金博天成科技技术有限公司 | Rotary indexing shutter for high-power laser welding equipment |
| CN204464750U (en) * | 2015-03-24 | 2015-07-08 | 山西暗睛光电科技有限公司 | A kind of surface treatment laser |
| CN205880365U (en) * | 2016-07-27 | 2017-01-11 | 凝辉(天津)科技有限责任公司 | Mechanical light modulator is used in resonance scanning |
| CN207530299U (en) * | 2017-11-07 | 2018-06-22 | 核工业理化工程研究院 | Internal cutting off light path type laser |
-
2017
- 2017-11-07 CN CN201711086509.2A patent/CN109755851A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101493631A (en) * | 2008-01-24 | 2009-07-29 | 鸿富锦精密工业（深圳）有限公司 | Mechanical shutter and camera module using the mechanical shutter |
| CN201349091Y (en) * | 2008-12-18 | 2009-11-18 | 武汉楚天激光（集团）股份有限公司 | Power monitoring optical shutter device located outside laser resonant cavity |
| CN202655800U (en) * | 2012-05-15 | 2013-01-09 | 武汉金博天成科技技术有限公司 | Rotary indexing shutter for high-power laser welding equipment |
| CN204464750U (en) * | 2015-03-24 | 2015-07-08 | 山西暗睛光电科技有限公司 | A kind of surface treatment laser |
| CN205880365U (en) * | 2016-07-27 | 2017-01-11 | 凝辉(天津)科技有限责任公司 | Mechanical light modulator is used in resonance scanning |
| CN207530299U (en) * | 2017-11-07 | 2018-06-22 | 核工业理化工程研究院 | Internal cutting off light path type laser |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112542763A (en) * | 2019-09-20 | 2021-03-23 | 山东华光光电子股份有限公司 | Indicating device for laser |
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