CN218481224U - Optical filter recognition device - Google Patents
Optical filter recognition device Download PDFInfo
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- CN218481224U CN218481224U CN202222740344.9U CN202222740344U CN218481224U CN 218481224 U CN218481224 U CN 218481224U CN 202222740344 U CN202222740344 U CN 202222740344U CN 218481224 U CN218481224 U CN 218481224U
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Abstract
The utility model relates to a light filter recognition device, include: the simulator light path is used for generating parallel light, and the parallel light is reflected by the reflector after passing through the optical filter to be tested and then is emitted from the light outlet; the first ultraviolet irradiation intensity sampling module and the second ultraviolet irradiation intensity sampling module are arranged behind the reflector and are used for detecting ultraviolet spectrum signals penetrating through the reflector; wherein the sampling range of the second ultraviolet irradiation intensity sampling module comprises the sampling range of the first ultraviolet irradiation intensity sampling module; and the singlechip module is used for receiving the output values of the first ultraviolet irradiation intensity sampling module and the second ultraviolet irradiation intensity sampling module, judging the type of the optical filter to be detected according to the output values of the first ultraviolet irradiation intensity sampling module and the second ultraviolet irradiation intensity sampling module, and determining whether the optical filter to be detected is abnormal or not. The utility model discloses can effectively discern the type of light filter.
Description
Technical Field
The utility model relates to a light filter discernment technical field especially relates to a light filter recognition device.
Background
The sunlight simulator is one kind of sunlight output simulating equipment, and has light source with short arc xenon lamp, emission spectrum almost identical to that of sunlight spectrum, ultraviolet spectrum output strength 5-10 times that of sunlight in natural world, light filter to process and output ultraviolet light in specific waveband, and wide application in biomedicine and other biological experiment.
In order to obtain ultraviolet light in a specific spectral band, the solar simulator usually employs an ultraviolet filter, such as a UVA (320 nm-400 nm) filter or a UVB (280 nm-320 nm) filter. In different experiments, different filters or filter combinations are needed, and the filters usually adopt ultraviolet colored glass as a substrate, so that the filters are easy to crack, deposit dust, damp and mildew and the like when used for a long time, and the experimental results are greatly deviated. Therefore, the equipment needs to judge or identify the above conditions in real time, and test deviation is avoided.
The existing products in the market generally adopt a sensing device added on a filter fixing support to realize filter identification, but the mode can only detect whether the filter is installed, namely, when the installed filter has errors, the mode cannot be identified, and the mode cannot detect the damage which possibly occurs to the filter and causes performance reduction in real time.
SUMMERY OF THE UTILITY MODEL
The utility model aims to solve the technical problem that a light filter recognition device is provided, the type of light filter can effectively be discerned.
The utility model provides a technical scheme that its technical problem adopted is: provided is a filter identification device, including:
the simulator light path is used for generating parallel light, and the parallel light is reflected by the reflector after passing through the optical filter to be tested and then is emitted from the light outlet;
the first ultraviolet irradiation intensity sampling module is arranged behind the reflector and used for detecting ultraviolet spectrum signals penetrating through the reflector;
the second ultraviolet irradiation intensity sampling module is arranged behind the reflector and used for detecting ultraviolet spectrum signals penetrating through the reflector; wherein the sampling range of the second ultraviolet radiation intensity sampling module comprises the sampling range of the first ultraviolet radiation intensity sampling module;
and the single chip microcomputer module is used for receiving the output values of the first ultraviolet irradiation intensity sampling module and the second ultraviolet irradiation intensity sampling module, judging the type of the optical filter to be detected according to the output values of the first ultraviolet irradiation intensity sampling module and the second ultraviolet irradiation intensity sampling module, and determining whether the optical filter to be detected is abnormal or not.
The simulator light path includes light source, reflector and dodging device, the light that the light source sent passes through the reflector assembles extremely dodging device, dodging device is used for forming the parallel light with the light after assembling, and shines extremely the light filter that awaits measuring.
The light source is a short-arc xenon lamp.
The reflector is plated with a high-reflection film so that the reflectivity of ultraviolet light is not lower than 90%.
The first ultraviolet irradiation intensity sampling module comprises a first silicon photodiode sensor and a first operational amplification circuit, the photosensitive surface of the first silicon photodiode sensor is right opposite to the rear center position of the reflector, the output end of the first silicon photodiode sensor is connected with the input end of the first operational amplification circuit, and the output end of the first operational amplification circuit is connected with the input end of the single chip microcomputer module.
The wavelength response range of the first silicon photodiode sensor is 200nm-370nm.
The second ultraviolet irradiation intensity sampling module comprises a second silicon photodiode sensor and a second operational amplification circuit, the photosensitive surface of the second silicon photodiode sensor is right opposite to the rear center position of the reflector, the output end of the second silicon photodiode sensor is connected with the input end of the second operational amplification circuit, and the output end of the second operational amplification circuit is connected with the input end of the single chip microcomputer module.
The wavelength response range of the second silicon photodiode sensor is 200nm-400nm.
Advantageous effects
Since the technical scheme is used, compared with the prior art, the utility model, have following advantage and positive effect: the utility model discloses place the probe of two different sensitive wave bands behind the speculum, utilize two probes to the different sensitive responses of the light of different wave bands, discern different light filters, the type of light filter not only can be judged to this kind of mode moreover, can also monitor the damage state of light filter through the output signal's of probe change, realization.
Drawings
Fig. 1 is a schematic structural diagram of an embodiment of the present invention.
Detailed Description
The present invention will be further described with reference to the following specific examples. It should be understood that these examples are for illustrative purposes only and are not intended to limit the scope of the present invention. Furthermore, it should be understood that various changes or modifications can be made by those skilled in the art after reading the teachings of the present invention, and these equivalents also fall within the scope of the appended claims.
The utility model discloses an embodiment relates to an optical filter recognition device, as shown in FIG. 1, include: the simulator light path 1 is used for generating parallel light, and the parallel light is reflected by the reflector 3 after passing through the filter 2 to be tested and then is emitted from the light outlet; the first ultraviolet radiation intensity sampling module 4 is arranged behind the reflector 3 and is used for detecting ultraviolet spectrum signals penetrating through the reflector 3; the second ultraviolet radiation intensity sampling module 5 is arranged behind the reflector 3 and used for detecting ultraviolet spectrum signals penetrating through the reflector 3; wherein the sampling range of the second ultraviolet irradiation intensity sampling module 5 comprises the sampling range of the first ultraviolet irradiation intensity sampling module 4; and the single chip microcomputer module 6 is used for receiving the output values of the first ultraviolet irradiation intensity sampling module 4 and the second ultraviolet irradiation intensity sampling module 5, judging the type of the optical filter 2 to be detected according to the output values of the first ultraviolet irradiation intensity sampling module 4 and the second ultraviolet irradiation intensity sampling module 5, and determining whether the optical filter 2 to be detected is abnormal or not.
In the embodiment, the simulator optical path 1 includes a light source 11, a light reflecting bowl 12 and a light uniformizing device 13, wherein the light source 11 adopts a short-arc xenon lamp, light generated by the short-arc xenon lamp is converged to the light uniformizing device 13 through the light reflecting bowl 12, the light forms parallel light after passing through the light uniformizing device 13, the generated parallel light beam can generate ultraviolet light of a corresponding waveband after passing through a UVA/UVB filter 2 to be detected, and the ultraviolet light of the corresponding waveband is vertically irradiated downwards from a light outlet after passing through a 45-degree reflecting mirror 3 plated with a high-reflection film (the ultraviolet reflectivity is greater than 90%).
The first ultraviolet irradiation intensity sampling module 4 comprises a first silicon photodiode sensor and a first operational amplifier circuit, the photosensitive surface of the first silicon photodiode sensor is right opposite to the rear center position of the reflector 3, the output end of the first silicon photodiode sensor is connected with the input end of the first operational amplifier circuit, and the output end of the first operational amplifier circuit is connected with the input end of the single chip microcomputer module. The first silicon photodiode sensor is used for detecting and detecting ultraviolet spectrum signals penetrating through the reflector 3, and the first operational amplifier circuit is used for amplifying the ultraviolet spectrum signals detected by the first silicon photodiode sensor. The wavelength response range of the first silicon photodiode sensor is 200nm-370nm.
Similarly, the second ultraviolet radiation intensity sampling module 5 comprises a second silicon photodiode sensor and a second operational amplifier circuit, the photosensitive surface of the second silicon photodiode sensor is right opposite to the rear center position of the reflector 3, the output end of the second silicon photodiode sensor is connected with the input end of the second operational amplifier circuit, and the output end of the second operational amplifier circuit is connected with the input end of the single chip microcomputer module. The second silicon photodiode sensor is configured to detect an ultraviolet spectrum signal transmitted through the reflecting mirror 3, and the second operational amplifier circuit is configured to amplify the ultraviolet spectrum signal detected by the second silicon photodiode sensor. The wavelength response range of the second silicon photodiode sensor is 200nm-400nm.
Since the wavelength response range of the first silicon photodiode sensor is different from the wavelength response range of the second silicon photodiode sensor, and the wavelength response range of the second silicon photodiode sensor includes the wavelength response range of the first silicon photodiode sensor. For the ultraviolet light spectrum output by the UVB optical filter is 280nm to 320nm, at this time, both the first ultraviolet radiation intensity sampling module 4 and the second ultraviolet radiation intensity sampling module 5 can detect signals, that is, when the input end of the single chip module 6 receives the output voltages of the first ultraviolet radiation intensity sampling module 4 and the second ultraviolet radiation intensity sampling module 5, and the two received output voltages are the same, it indicates that the current optical filter to be detected is the UVB optical filter.
For the ultraviolet spectrum output by the UVA filter, the ultraviolet spectrum can be within 320-400 nm, the second ultraviolet radiation intensity sampling module 5 can completely respond to the ultraviolet spectrum in the range, and the first ultraviolet radiation intensity sampling module 4 only responds to part of the bands in the ultraviolet spectrum. If the output voltages of the first ultraviolet irradiation intensity sampling module 4 and the second ultraviolet irradiation intensity sampling module 5 are both 2V for the UVB optical filter, then for the UVA optical filter, because the sampling range of the first ultraviolet irradiation intensity sampling module 4 is smaller than the sampling range of the second ultraviolet irradiation intensity sampling module 5, the output voltages of the two ultraviolet irradiation intensity sampling modules will be different, and the output voltage of the second ultraviolet irradiation intensity sampling module 5 will be higher than the output voltage of the first ultraviolet irradiation intensity sampling module 4, that is, when the output voltage of the second ultraviolet irradiation intensity sampling module 5 received by the input end of the single chip module 6 is greater than the output voltage of the first ultraviolet irradiation intensity sampling module 4, it indicates that the optical filter to be measured is the UVA optical filter currently.
The single chip module 6 of this embodiment may further store the output voltages of the first ultraviolet irradiation intensity sampling module 4 and the second ultraviolet irradiation intensity sampling module 5 in the storage unit under a normal optical filter, and set a confidence interval, when detecting, perform subtraction operation on the output voltages of the first ultraviolet irradiation intensity sampling module 4 and the second ultraviolet irradiation intensity sampling module 5 and the stored voltage, and when the difference exceeds the confidence interval, it indicates that the optical filter has abnormal conditions such as cracks, dust accumulation, or damp and mildew.
It is not difficult to discover, the utility model discloses place the probe of two different sensitive wave bands behind the speculum, utilize two probes to the different sensitive responses of the light of different wave bands, discern different light filters, the type of light filter not only can be judged to this kind of mode moreover, can also monitor the damage state of light filter through the output signal's of probe change, realization.
Claims (8)
1. An optical filter identification device, comprising:
the simulator light path is used for generating parallel light, and the parallel light is reflected by the reflector after passing through the optical filter to be tested and then is emitted from the light outlet;
the first ultraviolet irradiation intensity sampling module is arranged behind the reflector and used for detecting ultraviolet spectrum signals penetrating through the reflector;
the second ultraviolet irradiation intensity sampling module is arranged behind the reflector and used for detecting ultraviolet spectrum signals penetrating through the reflector; wherein the sampling range of the second ultraviolet irradiation intensity sampling module comprises the sampling range of the first ultraviolet irradiation intensity sampling module;
and the singlechip module is used for receiving the output values of the first ultraviolet irradiation intensity sampling module and the second ultraviolet irradiation intensity sampling module, judging the type of the optical filter to be detected according to the output values of the first ultraviolet irradiation intensity sampling module and the second ultraviolet irradiation intensity sampling module, and determining whether the optical filter to be detected is abnormal or not.
2. The optical filter identification device according to claim 1, wherein the optical path of the simulator includes a light source, a light reflecting bowl and a light uniformizing device, light emitted from the light source is converged to the light uniformizing device via the light reflecting bowl, and the light uniformizing device is configured to form parallel light from the converged light and irradiate the parallel light onto the optical filter to be tested.
3. The filter identification device according to claim 2, wherein said light source is a short arc xenon lamp.
4. The filter identification device of claim 1, wherein the reflecting mirror is coated with a high reflective film so that the reflectance of ultraviolet light is not less than 90%.
5. The optical filter identification device according to claim 1, wherein the first ultraviolet irradiation intensity sampling module comprises a first silicon photodiode sensor and a first operational amplifier circuit, a light-sensing surface of the first silicon photodiode sensor faces a rear center position of the reflector, an output end of the first silicon photodiode sensor is connected with an input end of the first operational amplifier circuit, and an output end of the first operational amplifier circuit is connected with an input end of the single chip microcomputer module.
6. The filter identification device of claim 5, wherein the first silicon photodiode sensor has a wavelength response in the range of 200nm to 370nm.
7. The optical filter identification device according to claim 1, wherein the second ultraviolet irradiation intensity sampling module comprises a second silicon photodiode sensor and a second operational amplifier circuit, a light-sensitive surface of the second silicon photodiode sensor faces a rear center position of the reflector, an output end of the second silicon photodiode sensor is connected with an input end of the second operational amplifier circuit, and an output end of the second operational amplifier circuit is connected with an input end of the single chip microcomputer module.
8. The filter identification device of claim 7, wherein the wavelength response range of the second silicon photodiode sensor is 200nm-400nm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222740344.9U CN218481224U (en) | 2022-10-18 | 2022-10-18 | Optical filter recognition device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222740344.9U CN218481224U (en) | 2022-10-18 | 2022-10-18 | Optical filter recognition device |
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| Publication Number | Publication Date |
|---|---|
| CN218481224U true CN218481224U (en) | 2023-02-14 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202222740344.9U Active CN218481224U (en) | 2022-10-18 | 2022-10-18 | Optical filter recognition device |
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| CN (1) | CN218481224U (en) |
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