CN110544861A - Laser attenuation protection device - Google Patents
Laser attenuation protection device Download PDFInfo
- Publication number
- CN110544861A CN110544861A CN201910883485.6A CN201910883485A CN110544861A CN 110544861 A CN110544861 A CN 110544861A CN 201910883485 A CN201910883485 A CN 201910883485A CN 110544861 A CN110544861 A CN 110544861A
- Authority
- CN
- China
- Prior art keywords
- movable plate
- attenuation sheet
- laser
- rear panel
- attenuation
- 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
Links
- 230000005484 gravity Effects 0.000 claims description 4
- 230000009471 action Effects 0.000 claims description 3
- 230000003028 elevating effect Effects 0.000 claims 1
- 230000004044 response Effects 0.000 abstract description 6
- 230000008859 change Effects 0.000 description 4
- 230000003287 optical effect Effects 0.000 description 3
- 238000010521 absorption reaction Methods 0.000 description 2
- 230000002238 attenuated effect Effects 0.000 description 2
- 238000001514 detection method Methods 0.000 description 2
- 230000006872 improvement Effects 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 239000013307 optical fiber Substances 0.000 description 1
- 238000005381 potential energy Methods 0.000 description 1
- 229920006395 saturated elastomer Polymers 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000002834 transmittance Methods 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01S—DEVICES USING THE PROCESS OF LIGHT AMPLIFICATION BY STIMULATED EMISSION OF RADIATION [LASER] TO AMPLIFY OR GENERATE LIGHT; DEVICES USING STIMULATED EMISSION OF ELECTROMAGNETIC RADIATION IN WAVE RANGES OTHER THAN OPTICAL
- H01S3/00—Lasers, i.e. devices using stimulated emission of electromagnetic radiation in the infrared, visible or ultraviolet wave range
- H01S3/005—Optical devices external to the laser cavity, specially adapted for lasers, e.g. for homogenisation of the beam or for manipulating laser pulses, e.g. pulse shaping
- H01S3/0085—Modulating the output, i.e. the laser beam is modulated outside the laser cavity
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01S—DEVICES USING THE PROCESS OF LIGHT AMPLIFICATION BY STIMULATED EMISSION OF RADIATION [LASER] TO AMPLIFY OR GENERATE LIGHT; DEVICES USING STIMULATED EMISSION OF ELECTROMAGNETIC RADIATION IN WAVE RANGES OTHER THAN OPTICAL
- H01S3/00—Lasers, i.e. devices using stimulated emission of electromagnetic radiation in the infrared, visible or ultraviolet wave range
- H01S3/02—Constructional details
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01S—DEVICES USING THE PROCESS OF LIGHT AMPLIFICATION BY STIMULATED EMISSION OF RADIATION [LASER] TO AMPLIFY OR GENERATE LIGHT; DEVICES USING STIMULATED EMISSION OF ELECTROMAGNETIC RADIATION IN WAVE RANGES OTHER THAN OPTICAL
- H01S5/00—Semiconductor lasers
- H01S5/005—Optical components external to the laser cavity, specially adapted therefor, e.g. for homogenisation or merging of the beams or for manipulating laser pulses, e.g. pulse shaping
- H01S5/0085—Optical components external to the laser cavity, specially adapted therefor, e.g. for homogenisation or merging of the beams or for manipulating laser pulses, e.g. pulse shaping for modulating the output, i.e. the laser beam is modulated outside the laser cavity
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01S—DEVICES USING THE PROCESS OF LIGHT AMPLIFICATION BY STIMULATED EMISSION OF RADIATION [LASER] TO AMPLIFY OR GENERATE LIGHT; DEVICES USING STIMULATED EMISSION OF ELECTROMAGNETIC RADIATION IN WAVE RANGES OTHER THAN OPTICAL
- H01S5/00—Semiconductor lasers
- H01S5/02—Structural details or components not essential to laser action
- H01S5/022—Mountings; Housings
- H01S5/0225—Out-coupling of light
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01S—DEVICES USING THE PROCESS OF LIGHT AMPLIFICATION BY STIMULATED EMISSION OF RADIATION [LASER] TO AMPLIFY OR GENERATE LIGHT; DEVICES USING STIMULATED EMISSION OF ELECTROMAGNETIC RADIATION IN WAVE RANGES OTHER THAN OPTICAL
- H01S5/00—Semiconductor lasers
- H01S5/02—Structural details or components not essential to laser action
- H01S5/022—Mountings; Housings
- H01S5/023—Mount members, e.g. sub-mount members
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01S—DEVICES USING THE PROCESS OF LIGHT AMPLIFICATION BY STIMULATED EMISSION OF RADIATION [LASER] TO AMPLIFY OR GENERATE LIGHT; DEVICES USING STIMULATED EMISSION OF ELECTROMAGNETIC RADIATION IN WAVE RANGES OTHER THAN OPTICAL
- H01S5/00—Semiconductor lasers
- H01S5/02—Structural details or components not essential to laser action
- H01S5/022—Mountings; Housings
- H01S5/0233—Mounting configuration of laser chips
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01S—DEVICES USING THE PROCESS OF LIGHT AMPLIFICATION BY STIMULATED EMISSION OF RADIATION [LASER] TO AMPLIFY OR GENERATE LIGHT; DEVICES USING STIMULATED EMISSION OF ELECTROMAGNETIC RADIATION IN WAVE RANGES OTHER THAN OPTICAL
- H01S5/00—Semiconductor lasers
- H01S5/02—Structural details or components not essential to laser action
- H01S5/022—Mountings; Housings
- H01S5/0235—Method for mounting laser chips
Landscapes
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Optics & Photonics (AREA)
- Condensed Matter Physics & Semiconductors (AREA)
- General Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Plasma & Fusion (AREA)
- Lasers (AREA)
- Laser Beam Processing (AREA)
Abstract
The invention discloses a laser attenuation protection device, which can automatically shield laser when a worker replaces an attenuation sheet or performs addition and subtraction operations, can meet the response interval of a detector and avoids the damage of the detector. Comprises an attenuation sheet support frame and an attenuation sheet support. The attenuation sheet support frame comprises a main body frame, a movable plate and a movable plate lifting part. The main body frame comprises a front panel and a rear panel which are arranged perpendicular to the horizontal direction, and the front panel is parallel to the rear panel. The top end of the front panel is provided with an attenuation sheet clamping groove A, the upper part of the rear panel is provided with a laser through hole, and the upper end of the laser through hole is provided with a clamping switch; the height of the laser through hole and the clamping switch on the rear panel exceeds the attenuation sheet clamping groove A. The top end of the movable plate is provided with an attenuation sheet clamping groove B; the movable plate and the movable plate lifting part are arranged between the front panel and the rear panel. The movable plate lifting part drives the movable plate to move up and down, so that the stroke of the top end of the movable plate in height is from the attenuation sheet clamping groove A to the clamping switch on the rear panel.
Description
Technical Field
the invention relates to the technical field of laser attenuation, in particular to a laser attenuation protection device.
Background
the laser has the characteristics of good coherence, strong directivity, high brightness and the like, but in the field of laser detection, the intensity of a laser signal easily exceeds the response interval of a detector, so that the detector is saturated and even damaged. Laser attenuators are of many types and different operational principles are used for different types of attenuators. The attenuation sheet type optical attenuator directly fixes an attenuation sheet with absorption characteristics in an optical path or on the end face of an optical fiber to achieve the purpose of attenuating optical signals. The attenuation sheet utilizes the absorption characteristic of substances to light, after light is incident, partial light is absorbed and reflected by the attenuation sheet to change the transmittance, and different wavelengths are attenuated according to the same proportion.
at present, the known attenuation sheet type intense laser attenuation device generally consists of two parts, namely an attenuation sheet and an attenuation sheet holding device. When the parameters of energy, power, repetition frequency, time distribution and the like of laser are effectively measured, the operation of adding and subtracting the attenuation sheet between the strong laser signal and the detector is often required manually, and then the intensity of the strong laser signal is attenuated so as to meet the response interval of the detector and avoid the damage of the detector.
The wavelength of laser is generally in the wave band of invisible light, when the staff carries out laser parameter measurement, because the naked eye invisibility of laser, when whole work or experimental stage go on, add and subtract or change the attenuation piece operation and cause the maloperation very easily, if the laser radiator does not close just to change the attenuation piece operation, damage laser detector, more serious condition probably even causes the laser to go into the harmful consequence of people's eye.
Therefore, there is a need for an automatic strong laser attenuation protection device that can satisfy the response interval of a detector and avoid the damage of the detector.
Disclosure of Invention
in view of this, the invention provides a laser attenuation protection device, which can automatically shield laser when an attenuation sheet is replaced or added or subtracted by a worker, and can meet a response interval of a detector and avoid damage to the detector.
In order to achieve the purpose, the technical scheme of the invention is as follows: a laser attenuation protection device comprises an attenuation sheet support frame and an attenuation sheet support.
The attenuation sheet support frame comprises a main body frame, a movable plate and a movable plate lifting part.
The main body frame comprises a front panel and a rear panel which are arranged perpendicular to the horizontal direction, and the front panel is parallel to the rear panel.
The top end of the front panel is provided with an attenuation sheet clamping groove A, the upper part of the rear panel is provided with a laser through hole, and the upper end of the laser through hole is provided with a clamping switch; the height of the laser through hole and the clamping switch on the rear panel exceeds the attenuation sheet clamping groove A.
The top end of the movable plate is provided with an attenuation sheet clamping groove B; the movable plate and the movable plate lifting part are arranged between the front panel and the rear panel.
The movable plate lifting part drives the movable plate to move up and down, so that the stroke of the top end of the movable plate in height is from the attenuation sheet clamping groove A to the clamping switch on the rear panel.
Further, the combination of the attenuation sheet slots a and B is used for placing the attenuation sheet holder when the attenuation sheet slots a and B are at the same height.
Further, the movable plate lifting part is of a spring telescopic structure.
The spring telescopic structure is fixedly connected with the bottom end of the movable plate, and the top end of the movable plate is propped against the position of the clamping switch in a natural state.
When the attenuation sheet support is arranged on the attenuation sheet clamping groove B, the attenuation sheet support and the movable plate jointly compress the spring telescopic structure under the action of gravity until the attenuation sheet clamping groove B and the attenuation sheet clamping groove B are the same in height.
further, the spring telescopic structure comprises a constant force spring, a constant force spring fixing box and a rotating shaft.
The constant force spring fixing box is fixedly connected on the front panel.
The movable plate is positioned between the rear panel and the constant force spring fixing box.
The constant force spring fixing box is internally provided with a rotating shaft which is fixed in a direction parallel to the front panel and the rear panel.
one end of the constant force spring is wound and fixed on the rotating shaft, and the other end of the constant force spring is fixedly connected with the bottom end of the movable plate.
Has the advantages that:
The invention provides a laser attenuation protection device, which can ensure that a worker can automatically and directly shield laser by using a movable plate when carrying out attenuation piece replacement operation, prevent the damage of a laser detection structure caused by misoperation of the worker, has the advantages of simple structure, convenience in use and low cost, conveniently ensures the operation safety of a laser device, increases the controllability, can meet the response interval of a detector and avoids the damage of the detector.
Drawings
Fig. 1 is a schematic view of an overall structure of a laser attenuation protection apparatus according to an embodiment of the present invention;
Fig. 2 is a partial cross-sectional view of a laser attenuation protection apparatus according to an embodiment of the present invention.
Detailed Description
The invention is described in detail below by way of example with reference to the accompanying drawings.
The invention provides a laser attenuation protection device, the whole structure of which is shown in figure 1, and the laser attenuation protection device comprises an attenuation sheet support frame and an attenuation sheet support 3.
the attenuation sheet support frame comprises a main body frame 1, a movable plate 2 and a movable plate lifting part.
The main body frame 1 includes a front panel and a rear panel which are horizontally disposed and parallel to each other.
The top end of the front panel is provided with an attenuation sheet clamping groove A, the upper part of the rear panel is provided with a laser through hole, and the upper end of the laser through hole is provided with a clamping switch 4; the height of the laser through hole and the position clamping switch 4 on the rear panel exceeds the attenuation sheet clamping groove A.
the top end of the movable plate 2 is provided with an attenuation sheet clamping groove B; the movable plate 2 and the movable plate lifting part are arranged between the front panel and the rear panel.
The movable plate lifting part drives the movable plate 2 to move up and down, so that the stroke of the top end of the movable plate 2 in height is from the attenuation sheet clamping groove A to the clamping switch 4 on the rear panel.
In the embodiment of the invention, when the attenuation sheet clamping grooves A and B are at the same height, the combination of the attenuation sheet clamping grooves A and B is used for placing the attenuation sheet holder 3.
in the embodiment of the invention, the movable plate lifting part is of a spring telescopic structure.
The spring telescopic structure is fixedly connected with the bottom end of the movable plate 2, and the top end of the movable plate is propped against the position of the clamping switch 4 in a natural state.
When the attenuation sheet support 3 is arranged on the attenuation sheet clamping groove B, the attenuation sheet support 3 and the movable plate 2 jointly compress the spring telescopic structure under the action of gravity until the attenuation sheet clamping groove B and the attenuation sheet clamping groove B are the same in height.
In the embodiment of the present invention, a partial cross-sectional view of the laser attenuation protection device is shown in fig. 2, and the spring expansion structure includes a constant force spring 8, a constant force spring fixing box 6 and a rotating shaft 7.
The constant force spring fixing box 6 is fixedly connected on the front panel.
The movable plate 2 is positioned between the rear panel and the constant force spring fixing box 6.
The constant force spring fixing box 6 is internally provided with a rotating shaft 7, and the rotating shaft 7 is fixed in a direction parallel to the front panel and the rear panel.
one end of the constant force spring 8 is wound and fixed on the rotating shaft 7, and the other end is fixedly connected with the bottom end of the movable plate 2.
The working principle of the invention is as follows:
The working principle is as follows: when the device is not operated, the device is in a static state, the constant force spring (8) is in a winding and contracting state, the movable plate (2) is pushed to the position of the upper clamping switch (4) due to the elastic potential energy of the spring, and the clamping switch (4) fixes the movable plate (3); when a worker places the attenuation sheet, the attenuation sheet support (3) provided with the attenuation sheet is placed on the movable plate (2), due to the gravity, the movable plate (2) descends, so that the constant force spring (8) is stretched to drive the rotating shaft (7) to rotate, and the attenuation sheet support (3) is placed on the clamping groove of the main body frame (1); when the staff changes the decay piece operation, hold in the palm (3) the decay piece that will be equipped with the decay piece and take away, constant force spring (8) deformation is resumeed and then drive the pivot and change home position this moment, and fly leaf (3) are pushed to top to screens switch (4) once more this moment, and then are blocked up the through-hole that gets into the instrument with the laser.
In summary, the above description is only a preferred embodiment of the present invention, and is not intended to limit the scope of the present invention. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (4)
1. The laser attenuation protection device is characterized by comprising an attenuation sheet support frame and an attenuation sheet support (3);
The attenuation sheet support frame comprises a main body frame (1), a movable plate (2) and a movable plate lifting part;
the main body frame (1) comprises a front panel and a rear panel which are arranged vertically and horizontally, and the front panel is parallel to the rear panel;
The top end of the front panel is provided with an attenuation sheet clamping groove A, the upper part of the rear panel is provided with a laser through hole, and the upper end of the laser through hole is provided with a clamping switch (4); the height of the laser through hole and the clamping switch (4) on the rear panel exceeds the attenuation sheet clamping groove A;
the top end of the movable plate (2) is provided with an attenuation sheet clamping groove B; the movable plate (2) and the movable plate lifting part are arranged between the front panel and the rear panel;
The movable plate lifting part drives the movable plate (2) to move up and down, so that the stroke of the top end of the movable plate (2) in height is from the attenuation sheet clamping groove A to the clamping switch (4) on the rear panel.
2. The arrangement as claimed in claim 1, characterized in that the combination of attenuator pad slots a and B is adapted to receive the attenuator pad holder (3) when the attenuator pad slots a and B are at the same height.
3. The apparatus as claimed in claim 1 or 2, wherein the movable plate elevating part is a spring telescopic structure;
The spring telescopic structure is fixedly connected with the bottom end of the movable plate (2), and the top end of the movable plate is propped against the position of the clamping switch (4) in a natural state;
When the attenuation sheet support (3) is arranged on the attenuation sheet clamping groove B, the attenuation sheet support (3) and the movable plate (2) jointly compress the spring telescopic structure under the action of gravity until the attenuation sheet clamping groove B is as high as the attenuation sheet clamping groove B.
4. The device according to claim 3, wherein the spring telescopic structure comprises a constant force spring (8), a constant force spring fixing box (6) and a rotating shaft (7);
The constant force spring fixing box (6) is fixedly connected to the front panel;
The movable plate (2) is positioned between the rear panel and the constant-force spring fixing box (6);
a rotating shaft (7) is arranged in the constant force spring fixing box (6), and the rotating shaft (7) is fixed in a direction parallel to the front panel and the rear panel;
One end of the constant force spring (8) is wound and fixed on the rotating shaft (7), and the other end of the constant force spring is fixedly connected with the bottom end of the movable plate (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910883485.6A CN110544861A (en) | 2019-09-18 | 2019-09-18 | Laser attenuation protection device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910883485.6A CN110544861A (en) | 2019-09-18 | 2019-09-18 | Laser attenuation protection device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110544861A true CN110544861A (en) | 2019-12-06 |
Family
ID=68713836
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910883485.6A Pending CN110544861A (en) | 2019-09-18 | 2019-09-18 | Laser attenuation protection device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110544861A (en) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000294410A (en) * | 1999-04-07 | 2000-10-20 | Nippon Antenna Co Ltd | Rotary attenuator |
| CN102384783A (en) * | 2011-08-15 | 2012-03-21 | 西北核技术研究所 | High-energy laser semi-integrating-sphere array attenuator |
| JP2015118225A (en) * | 2013-12-18 | 2015-06-25 | 株式会社Ｓｃｒｅｅｎホールディングス | Variable attenuator and drawing device |
| CN106768310A (en) * | 2017-01-22 | 2017-05-31 | 中国工程物理研究院应用电子学研究所 | A kind of superlaser detector array sampling attenuating device |
| CN206410783U (en) * | 2017-01-22 | 2017-08-15 | 中国工程物理研究院应用电子学研究所 | A kind of superlaser detector array sampling attenuating device |
| CN206741085U (en) * | 2017-03-31 | 2017-12-12 | 西安工业大学 | Laser energy attenuating device for dual wavelength |
| CN211017721U (en) * | 2019-09-18 | 2020-07-14 | 北京理工大学 | Laser attenuation protection device |
-
2019
- 2019-09-18 CN CN201910883485.6A patent/CN110544861A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000294410A (en) * | 1999-04-07 | 2000-10-20 | Nippon Antenna Co Ltd | Rotary attenuator |
| CN102384783A (en) * | 2011-08-15 | 2012-03-21 | 西北核技术研究所 | High-energy laser semi-integrating-sphere array attenuator |
| JP2015118225A (en) * | 2013-12-18 | 2015-06-25 | 株式会社Ｓｃｒｅｅｎホールディングス | Variable attenuator and drawing device |
| CN106768310A (en) * | 2017-01-22 | 2017-05-31 | 中国工程物理研究院应用电子学研究所 | A kind of superlaser detector array sampling attenuating device |
| CN206410783U (en) * | 2017-01-22 | 2017-08-15 | 中国工程物理研究院应用电子学研究所 | A kind of superlaser detector array sampling attenuating device |
| CN206741085U (en) * | 2017-03-31 | 2017-12-12 | 西安工业大学 | Laser energy attenuating device for dual wavelength |
| CN211017721U (en) * | 2019-09-18 | 2020-07-14 | 北京理工大学 | Laser attenuation protection device |
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