CN203014159U - Laser - Google Patents
Laser Download PDFInfo
- Publication number
- CN203014159U CN203014159U CN 201220569388 CN201220569388U CN203014159U CN 203014159 U CN203014159 U CN 203014159U CN 201220569388 CN201220569388 CN 201220569388 CN 201220569388 U CN201220569388 U CN 201220569388U CN 203014159 U CN203014159 U CN 203014159U
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- CN
- China
- Prior art keywords
- laser
- resistance
- operational amplifier
- filter capacitor
- thermistor
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- 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 - Lifetime
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Abstract
The utility model provides a laser. The laser comprises a housing on which a thermistor for converting the temperature of the laser into an electric signal is arranged, and the thermistor is arranged on an inner wall of the housing. A circuit board, which has a control circuit for receiving the electric signal of the thermistor and regulating the working current of the laser, is arranged outside the housing. According to the utility model, the temperature of the laser is converted into an electric signal by the thermistor on the housing and transmitted to the control circuit so as to regulate the working current of the laser, thereby realizing the constant power of output light of the laser within a certain temperature range.
Description
Technical field
The utility model relates to a kind of laser.
Background technology
Existing optical output power of laser varies with temperature and changes, and causes the output of its luminous power unstable, can cause that other equipment that are used in conjunction with adjust thereupon, even can't work, and has increased workload, reduces operating efficiency.
The utility model content
The purpose of this utility model guarantees the constant of the Output optical power of laser in certain temperature range.
For reaching above-mentioned purpose, the utility model provides a kind of laser, comprises housing, and being provided with for the temperature transition with this laser on housing is the thermistor of the signal of telecommunication, and this thermistor is arranged on inner walls.
Above-mentioned housing is outside equipped with the circuit board of the control circuit of the operating current that contains the signal of telecommunication that receives described thermistor and regulate and control described laser.
above-mentioned control circuit comprises power supply, current-limiting resistance, voltage-stabiliser tube, divider resistance, operational amplifier, filter capacitor, NPN type triode, current-limiting resistance and voltage-stabiliser tube are serially connected between the positive pole and negative pole of power supply, the positive pole of power supply connects the positive pole of described laser, the positive pole of the described thermistor one described voltage-stabiliser tube of termination, the other end connects power cathode through divider resistance, access simultaneously the in-phase input end of operational amplifier, the both positive and negative polarity of this operational amplifier connects the both positive and negative polarity of power supply, filter capacitor is serially connected between the output and its inverting input of operational amplifier, the contact of this output and filter capacitor connects the base stage of described NPN type triode through the first resistance, the negative pole of described laser connects the collector electrode of NPN type triode, the contact that the emitter of this NPN type triode is connected to inverting input and filter capacitor is connected to power cathode by the second resistance.
Above-mentioned control circuit comprises power supply, divider resistance, contains the MCU of analog to digital conversion circuit, operational amplifier, filter capacitor, NPN type triode, the first resistance, the second resistance, described positive source is connected to respectively an end of described divider resistance, the positive pole of MCU, the positive pole of operational amplifier and the positive pole of laser, is connected to power cathode after the described thermistor of another termination of described divider resistance; The signal input pin of described MCU is connected to the contact of this divider resistance and thermistor, the in-phase input end of its signal output pin access operational amplifier; The negative pole of MCU connects power cathode; Filter capacitor is serially connected between the output and its inverting input of operational amplifier, the contact of this output and filter capacitor connects the base stage of described NPN type triode through the first resistance, the negative pole of described laser connects the collector electrode of NPN type triode, and the contact that the emitter of this NPN type triode is connected to inverting input and filter capacitor is connected to power cathode by the second resistance.
The utility model has the advantages that: be the signal of telecommunication by the thermistor that is arranged on housing with the temperature transition of laser, and flow to control circuit, with the size of operating current of regulation and control laser, realize in certain temperature range the Output optical power of laser constant.
Below with reference to accompanying drawing, the utility model is described in further details.
Description of drawings
Fig. 1 is the schematic diagram of a kind of control circuit of providing of embodiment.
Fig. 2 is the schematic diagram of the another kind of control circuit that provides of embodiment.
In figure: 1, current-limiting resistance; 2, divider resistance; 3, operational amplifier; 4, filter capacitor; 5, NPN type triode; 6, the first resistance; 7, the second resistance; 8, MCU; LD, laser; D
1, voltage-stabiliser tube; 10 ,+VCC.
Embodiment
The purpose of this utility model is realize the Output optical power of laser in certain temperature range constant, for this reason, the present embodiment provides a kind of laser, comprise housing, being provided with for the temperature transition with this laser on housing is the thermistor of the signal of telecommunication, preferably thermistor is arranged on inner walls.
Housing is outside equipped with the circuit board of the control circuit of the operating current that contains the signal of telecommunication that receives thermistor and regulate and control described laser.
The control circuit that the present embodiment provides has two kinds, and a kind of is to comprise power supply+VCC, current-limiting resistance 1, voltage-stabiliser tube D
1, divider resistance 2, operational amplifier 3, filter capacitor 4, NPN type triode 5, current-limiting resistance 1 and voltage-stabiliser tube D
1Be serially connected between the positive pole and negative pole of power supply, the positive pole of power supply connects the positive pole of laser LD, thermistor RTC one termination voltage-stabiliser tube D
1Positive pole, the other end connects power cathode, accesses simultaneously the in-phase input end of operational amplifier 3 through divider resistance 2, the both positive and negative polarity of this operational amplifier 3 connects the both positive and negative polarity of power supply, filter capacitor 4 is serially connected between the output and its inverting input of operational amplifier 3, the contact of this output and filter capacitor 4 connects the base stage of NPN type triode 5 through the first resistance 6, the negative pole of laser LD connects the collector electrode of NPN type triode 5, and the contact that the emitter of this NPN type triode 5 is connected to inverting input and filter capacitor 4 is connected to power cathode by the second resistance 7.
The another kind of control circuit consists of: comprise power supply, divider resistance, contain MCU8, operational amplifier 3, filter capacitor 4, NPN type triode 5, the first resistance 6, second resistance 7 of analog to digital conversion circuit, positive source is connected to respectively an end of divider resistance 2, the positive pole of MCU8, the positive pole of operational amplifier 3 and the positive pole of laser LD, is connected to power cathode after another termination thermistor RTC of divider resistance; The signal input pin of MCU8 is connected to the contact of this divider resistance 2 and thermistor RTC, the in-phase input end of its signal output pin access operational amplifier 3; The negative pole of MCU8 connects power cathode; Filter capacitor 4 is serially connected between the output and its inverting input of operational amplifier 3, the contact of this output and filter capacitor 4 connects the base stage of NPN type triode 5 through the first resistance 6, the negative pole of laser LD connects the collector electrode of NPN type triode 5, and the contact that the emitter of this NPN type triode 5 is connected to inverting input and filter capacitor 4 is connected to power cathode by the second resistance 7.The control precision of this digital control circuit is higher than the control precision of analog control circuit.
The utility model has the advantages that: be the signal of telecommunication by the thermistor that is arranged on housing with the temperature transition of laser, and flow to control circuit, with the size of operating current of regulation and control laser, realize in certain temperature range the Output optical power of laser constant.
More than exemplifying is only to illustrate of the present utility model, does not consist of the restriction to protection range of the present utility model, within the every and same or analogous design of the utility model all belongs to protection range of the present utility model.
Claims (4)
1. a laser, comprise housing, it is characterized in that: being provided with for the temperature transition with this laser on described housing is the thermistor of the signal of telecommunication, and this thermistor is arranged on inner walls.
2. laser as claimed in claim 1, it is characterized in that: housing is outside equipped with the circuit board of the control circuit of the operating current that contains the signal of telecommunication that receives described thermistor and regulate and control described laser.
3. laser as claimed in claim 2, it is characterized in that: described control circuit comprises power supply, current-limiting resistance, voltage-stabiliser tube, divider resistance, operational amplifier, filter capacitor, NPN type triode, current-limiting resistance and voltage-stabiliser tube are serially connected between the positive pole and negative pole of power supply, the positive pole of power supply connects the positive pole of described laser, the positive pole of the described thermistor one described voltage-stabiliser tube of termination, the other end connects power cathode through divider resistance, access simultaneously the in-phase input end of operational amplifier, the both positive and negative polarity of this operational amplifier connects the both positive and negative polarity of power supply, filter capacitor is serially connected between the output and its inverting input of operational amplifier, the contact of this output and filter capacitor connects the base stage of described NPN type triode through the first resistance, the negative pole of described laser connects the collector electrode of NPN type triode, the contact that the emitter of this NPN type triode is connected to inverting input and filter capacitor is connected to power cathode by the second resistance.
4. laser as claimed in claim 2, it is characterized in that: described control circuit comprises power supply, divider resistance, contains the MCU of analog to digital conversion circuit, operational amplifier, filter capacitor, NPN type triode, the first resistance, the second resistance, described positive source is connected to respectively an end of described divider resistance, the positive pole of MCU, the positive pole of operational amplifier and the positive pole of laser, is connected to power cathode after the described thermistor of another termination of described divider resistance;
The signal input pin of described MCU is connected to the contact of this divider resistance and thermistor, the in-phase input end of its signal output pin access operational amplifier; The negative pole of MCU connects power cathode;
Filter capacitor is serially connected between the output and its inverting input of operational amplifier, the contact of this output and filter capacitor connects the base stage of described NPN type triode through the first resistance, the negative pole of described laser connects the collector electrode of NPN type triode, and the contact that the emitter of this NPN type triode is connected to inverting input and filter capacitor is connected to power cathode by the second resistance.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220569388 CN203014159U (en) | 2012-11-01 | 2012-11-01 | Laser |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220569388 CN203014159U (en) | 2012-11-01 | 2012-11-01 | Laser |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203014159U true CN203014159U (en) | 2013-06-19 |
Family
ID=48605716
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220569388 Expired - Lifetime CN203014159U (en) | 2012-11-01 | 2012-11-01 | Laser |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203014159U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104184044A (en) * | 2014-08-20 | 2014-12-03 | 中国科学院西安光学精密机械研究所 | High-power semiconductor laser system and preparing method thereof |
| CN105242739A (en) * | 2015-10-30 | 2016-01-13 | 江苏奥雷光电有限公司 | Temperature control bias current supply circuit, bias current temperature control method and laser driver |
| RU2774628C1 (en) * | 2021-09-28 | 2022-06-21 | Федеральное государственное бюджетное учреждение науки Институт проблем механики им. А.Ю. Ишлинского Российской академии наук | Ionization pulse generator |
-
2012
- 2012-11-01 CN CN 201220569388 patent/CN203014159U/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104184044A (en) * | 2014-08-20 | 2014-12-03 | 中国科学院西安光学精密机械研究所 | High-power semiconductor laser system and preparing method thereof |
| CN105242739A (en) * | 2015-10-30 | 2016-01-13 | 江苏奥雷光电有限公司 | Temperature control bias current supply circuit, bias current temperature control method and laser driver |
| RU2774628C1 (en) * | 2021-09-28 | 2022-06-21 | Федеральное государственное бюджетное учреждение науки Институт проблем механики им. А.Ю. Ишлинского Российской академии наук | Ionization pulse generator |
| RU2793569C1 (en) * | 2022-06-15 | 2023-04-04 | Федеральное государственное бюджетное учреждение науки Институт проблем механики им. А.Ю. Ишлинского Российской академии наук (ИПМех РАН) | Ionization pulse generator |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20130619 |
|
| CX01 | Expiry of patent term |