CN216291510U - Pulse steady-state semiconductor light source - Google Patents
Pulse steady-state semiconductor light source Download PDFInfo
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- CN216291510U CN216291510U CN202121838721.1U CN202121838721U CN216291510U CN 216291510 U CN216291510 U CN 216291510U CN 202121838721 U CN202121838721 U CN 202121838721U CN 216291510 U CN216291510 U CN 216291510U
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Abstract
The utility model relates to a pulse steady-state semiconductor light source which is characterized by comprising a semiconductor light source which can generate pulse light and continuous steady-state light, wherein the pulse width and the repetition frequency are adjustable, and an LD (laser diode) or LED (light-emitting diode) lamp can be adopted to cover a longer wavelength range; the pulse shaping and amplifying module is used for amplifying and shaping the semiconductor light source control pulse signal; the power adjusting module is used for adjusting the output power of the semiconductor light source and is compatible with LEDs and LDs of different models; the heat dissipation collimation module is used for collimating the light of the semiconductor light source and performing heat dissipation treatment on the semiconductor light source; a synchronization signal output and a trigger signal input for generating a system synchronization signal and receiving an external control signal; and the display key module is used for displaying the output pulse width and the repetition frequency information of the semiconductor light source and switching different pulse widths and repetition frequencies through keys.
Description
Technical Field
The utility model relates to a semiconductor light source, in particular to a semiconductor LD or LED light source capable of generating adjustable pulse and direct current steady-state light emission.
Background
The pulse light source is widely applied in the fields of transient optical analysis, optical imaging, distance measurement and the like, and the semiconductor pulse light source mainly adopts a semiconductor Laser (LD) at present, and has the advantages of good light collimation, relatively high price and small covered wavelength range; the price of the LED light source is low, the selectable wavelength range is wide, and the defect is poor light collimation. Due to limitations of circuit complexity, heat dissipation, and cost, most current pulsed light sources do not support continuous steady-state light emission.
Disclosure of Invention
The utility model provides a semiconductor light source simultaneously suitable for LD and LED, which can generate pulse light with adjustable pulse width and repetition frequency and continuous direct current steady-state light, and the wavelength selection of the light source is more flexible.
In order to realize the functions of pulse luminescence and continuous luminescence, the utility model adopts the technical scheme that: a main control chip is used for generating a pulse or direct current control signal, and the control signal is shaped and amplified to directly control a fast-response MOSFET switch, so that the on-off of a semiconductor light source is controlled, and pulsed light or continuous light is generated; the semiconductor light source driving power supply has adjustable voltage, is compatible with LD and LED with different starting voltages, and simultaneously reduces the power consumption and heating of the light source circuit to the maximum extent; the semiconductor light source shell is connected to the collimation heat dissipation module, so that the light power is continuous and stable, and the problem of poor collimation of the LED light is solved.
A pulsed steady-state semiconductor light source comprising: LD or LED lamps for covering longer wavelength ranges;
the pulse shaping and amplifying module is used for amplifying and shaping the semiconductor light source control pulse signal;
the power adjusting module is used for adjusting the output power of the semiconductor light source and is compatible with LEDs and LDs of different models;
the heat dissipation collimation module is used for collimating the light of the semiconductor light source and performing heat dissipation treatment on the semiconductor light source;
the system comprises a synchronous signal output module and a trigger signal input module, wherein the synchronous signal output module and the trigger signal input module are used for generating a system synchronous signal and receiving an external control signal;
and the display key module is used for displaying the output pulse width and the repetition frequency information of the semiconductor light source and switching different pulse widths and repetition frequencies through keys.
The power adjusting module comprises an adjustable power supply, and the input of the module is the output of the pulse shaping amplifying module and is used for controlling the output power of the semiconductor light source.
The display key module comprises two keys and an LCD screen.
The utility model can control the menu selection by the keys according to the pulse width, frequency and continuous light emission, and the function menu can be displayed by the liquid crystal screen.
The utility model supports the synchronous output of pulses and provides synchronous signals for an optical analysis system.
The utility model supports external trigger input, thereby performing light emitting control on the semiconductor light source.
Drawings
The utility model is further illustrated with reference to the following figures and examples.
Fig. 1 is a schematic block diagram of the present invention.
Fig. 2 is a functional block diagram of the power adjustment portion of the present invention.
Fig. 3 is a graph of a test light pulse waveform of the present invention.
Detailed Description
The following description of specific embodiments of the present invention refers to the accompanying drawings.
Fig. 1 is a schematic block diagram of the present invention, and the semiconductor light source includes a main control chip 10, a pulse shaping amplifier 20, a power regulator 30, a collimating heat sink 40, a display key 50, a trigger signal input 60, and a synchronization signal output 70.
The main control chip 10 generates a control signal, a synchronous output signal, a display control signal of the semiconductor light source, and receives a trigger signal input and a key input.
The input of the pulse shaping amplifier 20 module is a control signal of a semiconductor light source generated by the main control chip 10, the control signal is a CMOS level, the pulse amplitude of a high-bandwidth narrow pulse signal is attenuated after the signal is transmitted through a PCB line, and the pulse width is widened, so that the narrow pulse needs to be amplified and shaped, and the electric pulse width can be compressed to below 20ns after the signal is shaped and amplified.
The power adjustment 30 module input is the output of the pulse shaping amplifier 20 module for controlling the output power of the semiconductor light source. Because the operating voltage and current points of the LEDs and the LDs with different wavelengths are different, the semiconductor light source is powered by an adjustable power supply in order to improve the output power of the light source to the maximum extent and reduce the heating loss of a circuit. As shown in fig. 2, the output of the adjustable power source is connected in series with a resistor R1, a semiconductor light source D1, and a fast switching MOSFET Q1, and the output power of the semiconductor light source can be controlled by adjusting the output voltage of the adjustable power source.
The collimation heat dissipation 40 module is an optical structural part, and a shell of the semiconductor light source is in good contact with the collimation heat dissipation 40 module for heat dissipation, so that stable light power output is ensured; after the output of the LED light source passes through the collimation heat dissipation 40 module, the collimation property of light is improved, and the application requirements can be met.
The display key 50 module mainly realizes function menu display and function selection input, and a user can see information such as output frequency, pulse width and the like of the current light source through display and switch different pulse widths and frequencies through keys.
The input of the trigger signal input 60 module is an external trigger signal, which is shaped and then output to the main control chip 10 module.
The input of the synchronization signal output 70 module is the output of the main control chip module 10, which is output after level conversion, and can provide a synchronization signal for system application.
Fig. 3 shows the optical pulse signal of the semiconductor light source, i.e. the response waveform of the optical signal output by the light source after passing through the photodetector, and it can be seen that the half-power width of the pulse output by the semiconductor light source can be as low as 20 ns.
Claims (3)
1. A pulsed steady-state semiconductor light source, comprising: LD or LED lamps for covering longer wavelength ranges;
the pulse shaping and amplifying module is used for amplifying and shaping the semiconductor light source control pulse signal;
the power adjusting module is used for adjusting the output power of the semiconductor light source and is compatible with LEDs and LDs of different models;
the heat dissipation collimation module is used for collimating the light of the semiconductor light source and performing heat dissipation treatment on the semiconductor light source;
the system comprises a synchronous signal output module and a trigger signal input module, wherein the synchronous signal output module and the trigger signal input module are used for generating a system synchronous signal and receiving an external control signal;
and the display key module is used for displaying the output pulse width and the repetition frequency information of the semiconductor light source and switching different pulse widths and repetition frequencies through keys.
2. A pulsed steady-state semiconductor light source as claimed in claim 1 wherein the power regulation module comprises a tunable power supply, the power regulation module input being the output of the pulse shaping amplification module for controlling the output power of the semiconductor light source.
3. The pulsed steady-state semiconductor light source of claim 1, wherein the display key module is two keys and an LCD.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121838721.1U CN216291510U (en) | 2021-08-05 | 2021-08-05 | Pulse steady-state semiconductor light source |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121838721.1U CN216291510U (en) | 2021-08-05 | 2021-08-05 | Pulse steady-state semiconductor light source |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216291510U true CN216291510U (en) | 2022-04-12 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121838721.1U Active CN216291510U (en) | 2021-08-05 | 2021-08-05 | Pulse steady-state semiconductor light source |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216291510U (en) |
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2021
- 2021-08-05 CN CN202121838721.1U patent/CN216291510U/en active Active
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