CN203840301U - Laser automatic detection protecting device based on liquid crystal optical switch - Google Patents
Laser automatic detection protecting device based on liquid crystal optical switch Download PDFInfo
- Publication number
- CN203840301U CN203840301U CN201420196740.2U CN201420196740U CN203840301U CN 203840301 U CN203840301 U CN 203840301U CN 201420196740 U CN201420196740 U CN 201420196740U CN 203840301 U CN203840301 U CN 203840301U
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- CN
- China
- Prior art keywords
- liquid crystal
- electromagnetic relay
- triode
- optical switch
- laser
- 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.)
- Expired - Fee Related
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Abstract
The utility model relates to a laser automatic detection protecting device based on a liquid crystal optical switch. According to the technical scheme, the laser automatic detection protecting device comprises a lightweight alloy glass frame, a 5V lithium battery, an electromagnetic relay, liquid crystal screens, a detection device and a photosensitive sensor, the top center of the lightweight alloy glass frame is provided with the 5V lithium battery, the middle part of the lightweight alloy glass frame is provided with the photosensitive sensor, two sides of the lightweight alloy glass frame are respectively provided with the liquid crystal screens, the liquid crystal screens are connected with the 5V lithium battery via the electromagnetic relay, and the electromagnetic relay is connected with the detection device. The beneficial effects of the laser automatic detection protecting device are that the on-off of the circuit of the detection device of the liquid crystal screens is controlled via the induction detection of a laser source so that the pass and the block of lights by the liquid crystal screens are controlled, high-power lasers with various wavelengths are protective, and the defect that the conventional laser protecting device only aims to the lasers with certain wavelengths is overcome.
Description
Technical field
The utility model relates to a kind of laser detection and protector, and particularly a kind of laser based on liquid crystal optical switch detects protector automatically.
Background technology
Since nineteen sixty comes out, laser has all been waited until development and application energetically in fields such as medical science, scientific research, military affairs.Along with popularizing of laser, also more and more paid attention to about the protection of laser.The skin of human body particularly eye exposure can produce irreversible burning under laser.At present, the laser protector of greatly developing on market mainly depends on the application of strong reflection or superabsorbent materials.But this class material is mostly only for the laser of wavelength among a small circle.Use fast optical switch based to be used as laser protector and can to tackle the high power laser light of various wavelength.
Summary of the invention
The purpose of this utility model is exactly for this narrow significant deficiency of protection wave-length coverage that laser protector exists in the market, provides a kind of laser based on liquid crystal optical switch that can protect various wavelength high power laser lights automatically to detect protector.
Its technical scheme is: comprise alloy in lightweight mirror holder, 5V lithium battery, electromagnetic relay, liquid crystal display screen, checkout gear, light sensor, 5V lithium battery is installed in the middle and upper part of described alloy in lightweight mirror holder, the middle part of alloy in lightweight mirror holder is provided with light sensor, liquid crystal display screen is installed respectively in the both sides of alloy in lightweight mirror holder, and liquid crystal display screen is connected with 5V lithium battery by electromagnetic relay; Described electromagnetic relay is connected with checkout gear.
Above-mentioned checkout gear comprises phototriode VT
1, triode T
1, triode T
2, light-emitting diode L
1, light-emitting diode L
2and circuit power VCC formation, phototriode VT
1input be connected to lasing light emitter A, output connects by triode T
1with triode T
2the signal amplification circuit of composition, triode T
1with triode T
2connecting luminous diode L respectively
1, light-emitting diode L
2be used to refer to circuit, triode T
2output connect electromagnetic relay.
Above-mentioned electromagnetic relay adopts H type electromagnetic relay.
The beneficial effects of the utility model are: cut-off by the circuit that the induction of lasing light emitter is detected to control liquid crystal display screen checkout gear, thereby control liquid crystal display screen passing through and stopping light, all just there is protective for the high power laser light of each wavelength like this, solved a current laser protector defect for some wavelength laser.
Brief description of the drawings
Accompanying drawing 1 is structural representation of the present utility model;
Accompanying drawing 2 is circuit diagrams of the present utility model;
In upper figure: alloy in lightweight mirror holder 1,5V lithium battery 2, electromagnetic relay 3, liquid crystal display screen 4, checkout gear 5, light sensor 6; Lasing light emitter A, eye retina B;
Phototriode VT
1, triode T
1, triode T
2, light-emitting diode L
1and L
2, circuit power VCC, resistance R 1-R3.
Embodiment
With reference to accompanying drawing 1, the utility model comprises alloy in lightweight mirror holder 1,5V lithium battery 2, electromagnetic relay 3, liquid crystal display screen 4, checkout gear 5, light sensor 6,5V lithium battery 2 is installed in the middle and upper part of described alloy in lightweight mirror holder 1, the middle part of alloy in lightweight mirror holder 1 is provided with light sensor 6, liquid crystal display screen 4 is installed respectively as lens in the both sides of alloy in lightweight mirror holder 1, and liquid crystal display screen 4 is connected with 5V lithium battery 2 by electromagnetic relay 3; Described electromagnetic relay 3 is connected with checkout gear 5.
With reference to accompanying drawing 2, checkout gear 5 comprises phototriode VT
1, triode T
1, triode T
2, light-emitting diode L
1, light-emitting diode L
2and circuit power VCC formation, phototriode VT
1input be connected to lasing light emitter A, output connects by triode T
1with triode T
2the signal amplification circuit of composition, triode T
1with triode T
2connecting luminous diode L respectively
1, light-emitting diode L
2be used to refer to circuit, triode T
2output connect electromagnetic relay 3, above-mentioned electromagnetic relay 3 adopts H type electromagnetic relay.
Concrete circuit working principle is:
(1) main optical path: be made up of " lasing light emitter A-liquid crystal display screen-glasses retina B ", the centre-height of each element is adjusted on same straight line.
(2) checkout gear: by phototriode VT
1, triode T
1and T
2, the light-emitting diode L whether indicating circuit normally works
1and L
2, and circuit power VCC forms.Work as VT
1when laser detected, along with its collector to-boase voltage difference U
c, Eincrease VT
1produce photoelectric current I
e, until VT
1after saturation conduction, T
1collector potential raises, and touches logical T
2; Indicator light L
1, L
2luminous; T
1, T
2the optical switch closure of the formation that cooperatively interacts, makes H type electromagnetic relay closure, and after+5V mainframe box power connection disappears for electric laser to liquid crystal display screen, phototriode loses triggering and ends; L
1, L
2extinguish; Relay recovery off-state, main circuit disconnects, and mainframe box power supply stops to liquid crystal display screen power supply, and optical switch disconnects.
(3) liquid crystal optical switch: formed by mainframe box power supply H type relay and liquid crystal display screen.When mainframe box power supply is connected to liquid crystal voltage control port by relay, liquid crystal optical switch becomes off state, stops laser by after disappearing when relay driving voltage, and because relay interior loop exists remanent magnetism, relay switch can disconnect in time delay; Liquid crystal voltage control port becomes low level, and liquid crystal shutter continues open-minded, allows light to pass through.
Claims (3)
1. the laser based on liquid crystal optical switch detects protector automatically, it is characterized in that: comprise alloy in lightweight mirror holder (1), 5V lithium battery (2), electromagnetic relay (3), liquid crystal display screen (4), checkout gear (5), light sensor (6), 5V lithium battery (2) is installed in the middle and upper part of described alloy in lightweight mirror holder (1), the middle part of alloy in lightweight mirror holder (1) is provided with light sensor (6), liquid crystal display screen (4) is installed respectively in the both sides of alloy in lightweight mirror holder (1), and liquid crystal display screen (4) is connected with 5V lithium battery (2) by electromagnetic relay (3); Described electromagnetic relay (3) is connected with checkout gear (5).
2. the laser based on liquid crystal optical switch according to claim 1 detects protector automatically, it is characterized in that: described checkout gear (5) comprises phototriode VT
1, triode T
1, triode T
2, light-emitting diode L
1, light-emitting diode L
2and circuit power VCC formation, phototriode VT
1input be connected to lasing light emitter A, output connects by triode T
1with triode T
2the signal amplification circuit of composition, triode T
1with triode T
2connecting luminous diode L respectively
1, light-emitting diode L
2be used to refer to circuit, triode T
2output connect electromagnetic relay (3).
3. the laser based on liquid crystal optical switch according to claim 1 and 2 detects protector automatically, it is characterized in that: electromagnetic relay (3) adopts H type electromagnetic relay.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420196740.2U CN203840301U (en) | 2014-04-22 | 2014-04-22 | Laser automatic detection protecting device based on liquid crystal optical switch |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420196740.2U CN203840301U (en) | 2014-04-22 | 2014-04-22 | Laser automatic detection protecting device based on liquid crystal optical switch |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203840301U true CN203840301U (en) | 2014-09-17 |
Family
ID=51518094
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420196740.2U Expired - Fee Related CN203840301U (en) | 2014-04-22 | 2014-04-22 | Laser automatic detection protecting device based on liquid crystal optical switch |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203840301U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108305594A (en) * | 2018-04-12 | 2018-07-20 | 中国石油大学(华东) | A kind of laser detection and protective device automatically |
-
2014
- 2014-04-22 CN CN201420196740.2U patent/CN203840301U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108305594A (en) * | 2018-04-12 | 2018-07-20 | 中国石油大学(华东) | A kind of laser detection and protective device automatically |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140917 Termination date: 20150422 |
|
| EXPY | Termination of patent right or utility model |