CN203117107U - Device for detecting penetration rate of photochromic material - Google Patents

Abstract

The utility model discloses a photochromic material penetration rate detection device, which is provided with a case for isolating an external light source, the case is used for movably placing photochromic material to be detected, one side in the case is provided with a reference light source, the reference light source is arranged in front of the photochromic material to be detected, one side of the photochromic material is provided with at least one photochromic excitation light source, and the other side of the photochromic material is provided with a light sensor, the reference light source, the photochromic excitation light source and the light sensor are linked to a control circuit, the control circuit is linked with a data collection and processing unit, the linking of the data collection and processing unit is responsible for the on-off control of the reference light source and the photochromic excitation light source and the data collection of the light sensor, the collected data is recorded, and the data is converted into the penetration rate of the photochromic material, and displayed on the human-machine interface. The penetration rate of the photochromic material can be detected more conveniently and accurately.

Description

Measuring device for transmittance of photochromic material

technical field

The utility model belongs to optical material detection equipment, in particular to a detection device for the penetration rate of photochromic materials.

Background technique

Under general lighting conditions, ordinary glass is transparent. For glass or transparent plastic materials with certain components, under the irradiation of ultraviolet light or visible light of specific wavelengths, light absorption in the visible light region can occur, reducing the light transmittance of the material. Or produce color changes, and can automatically return to the original transparent state after the light stops, which are called photochromic materials; the color and transmittance of photochromic glass will change with the intensity of sunlight. The color of the glass is dark and the light transmittance is low; on the contrary, the sunlight intensity is low, the color of the glass is light, and the light transmittance is high.

The photochromic lens, generally referred to as a color-changing lens, is to add silver halide and other compounds to the colorless or colored optical glass composition, so that the lens can be decomposed into silver and halogen atoms when exposed to ultraviolet rays, and the color of the carbon fiber of the lens changes from light to dark; on the contrary, When the light becomes weak, silver and halogen combine again to form colorless silver halide, and the lens returns to its original state. This lens can correct vision and can be used as sunglasses; in 1986, a photochromic resin material was invented. The infiltration method infiltrates a layer of photochromic photosensitive material on the convex surface of the lens, or directly mixes the color-changing material into the resin material to make the lens have a color-changing property. This kind of lens changes color quickly and is not affected by temperature.

The commonly used detection method of light transmittance (opacity) is to prepare the color-changing material into a solution, and then use a spectrometer to perform light transmittance calculation or spectral analysis. The detection method is cumbersome and complicated.

Utility model content

The purpose of the utility model is to provide a detection device which can detect the penetration rate of photochromic materials more conveniently and accurately.

For achieving the above object, the solution of the present utility model is:

A detection device for the transmittance of a photochromic material, 1. A detection device for the transmittance of a photochromic material, which is provided with a cabinet for isolating external light sources, and the cabinet is used for movable insertion of the photochromic material to be tested , one side of the cabinet is provided with a reference light source, the reference light source is arranged in front of the photochromic material to be tested, one side of the photochromic material is provided with at least one color-changing excitation light source, and on the photochromic The other side of the material is provided with a light sensor, and the reference light source, the color-changing excitation light source and the light sensor are linked to a control circuit, the control circuit is linked to a data collection and processing unit, and the link of the data collection and processing unit is responsible for the With reference to the switching control of the light source and the color-changing excitation light source and the data collection of the light sensor, the collected data is recorded, converted into the transmittance of the photochromic material, and displayed on the man-machine interface.

The reference light source is a halogen lamp, a xenon lamp, a multi-wavelength lamp, or a reference light source composed of multiple groups of light sources with different wavelengths.

The color-changing excitation light source is the excitation light required by the photochromic material, which is a lamp emitting UV wavelength, a UV LED or a plurality of lamps in the excitation wavelength range.

The light sensor is a sensor covering all spectral ranges of the reference light source.

The light sensor is CMOS, CCD, general silicon-based light sensor or solar panel.

The optical sensor is composed of a plurality of sensors.

The control circuit is a set of digital-to-analog conversion and a microprocessor.

The data collection and processing unit has functions of data collection, processing and display, and at least one display interface.

After adopting the above scheme, it can be seen that the utility model does not use spectral analysis or spectrometer detection method, but instead uses an optical sensor to measure the total energy of the penetrating light, and uses a color-changing excitation light source as a light source to trigger the color change of the material to be tested; wherein, The signal measured by the light sensor is processed by the control circuit first, and then sent to the data collection and processing unit for subsequent calculation and recording. The control circuit can also accept the instructions sent by the data collection and processing unit to control the color-changing excitation light source and reference light source. switch, so that the transmittance of the photochromic material can be detected more conveniently and accurately.

Description of drawings

Fig. 1 is the schematic diagram of the utility model detection device;

Fig. 2 is the use schematic diagram of the utility model embodiment;

Fig. 3 is a graph showing the variation of the transmittance of the photochromic material during the test of the transmittance of the embodiment of the present invention.

Explanation of main component symbols

1 chassis

2 Photochromic material 20 UV photochromic lens

3 Reference light source 30 Halogen lamp

4 Color-changing excitation light source 40 UV lamps

5 light sensor

6 control circuit

7 Data collection and processing unit 70 Human-machine interface.

Detailed ways

Relevant utility model is for reaching above-mentioned purpose of use and effect, and the technical means adopted hereby enumerates preferred and feasible embodiments, and cooperates as shown in the drawings, and is described in detail as follows:

First of all, as shown in Figure 1, there is mainly a casing 1 that can isolate the external light source, and the casing 1 can be easily opened for placing the photochromic material 2 to be tested. A light source 3, the reference light source 3 is arranged in front of the photochromic material 2 to be tested, at least one color-changing excitation light source 4 is provided on one side of the photochromic material 2, and on the other side of the photochromic material 2 There is a light sensor 5 on the side, and the above-mentioned components are all placed in the case 1 that can isolate the external light source. The light source 4 and the light sensor 5 are linked to a control circuit 6, and the control circuit 6 is linked with a data collection and processing unit 7, and the data collection and processing unit 7 is linked to be responsible for switching control of the reference light source 3 and the color-changing excitation light source 4 And the data collection of the light sensor 5, record the collected data, and convert the data into the transmittance of the photochromic material 2, and display it on the man-machine interface 70.

The reference light source 3 may be a halogen lamp, a xenon lamp, a multi-wavelength lamp, or a reference light source composed of multiple groups of light sources with different wavelengths.

The color-changing excitation light source 4 is the excitation light required by the photochromic material 2, which can be composed of lamps emitting UV wavelengths, UV LEDs, or composed of other lamps emitting light sources with specific filters, or composed of multiple Composed of lamps with appropriate excitation wavelength range.

The light sensor 5 is a sensor that can cover all spectral ranges of the reference light source 3 , such as CMOS, CCD, general silicon-based light sensor or solar panel.

The light sensor 5 can be composed of a plurality of sensors, and individual sensors are responsible for sensing ranges of different wavelengths.

The control circuit 6 can be a set of digital-to-analog conversion and a microprocessor.

The data collection and processing unit 7 can be a computer, which needs to have functions such as detection process control and penetration rate change curve drawing.

Please refer to Fig. 2 for the embodiment of the photochromic material transmittance detection device of the present invention. This embodiment is used to detect the UV photochromic lens 20, and the UV photochromic lens 20 is placed in the cabinet 1. A light sensor 5 and a halogen lamp 30 are arranged in the chassis 1, and the halogen lamp 30 is used as a reference light source 3, and the UV lamp 40 is used as a color-changing excitation light source 4 to stimulate the UV color-changing lens 20 to change color. The control circuit 6 is equipped with The communication interface can be connected with the data collection and processing unit 7 (computer) to transmit related commands and light sensor 5 signals, which includes control circuit 6 (including microprocessor, A/D conversion, switch control of UV lamp and halogen lamp and RS -232 transmission interface), RS-232 circuit, transformer, etc.

Its detection process is as follows:

1. Turn on the reference light source 3 (halogen lamp 30 ), and record the brightness reference value R measured by the light sensor 5 .

2. Place the photochromic material 2 (UV photochromic lens 20 ) to be tested in the case 1 .

，并纪录与绘制穿透率降低曲线。 3. Turn on the color-changing excitation light source 4 (UV lamp 40), monitor the real-time brightness value St measured by the light sensor 5, and calculate the real-time transmittance value according to the following formula

, and record and draw the penetration reduction curve.

4. When the transmittance value no longer changes, turn off the color-changing excitation light source 4 (UV lamp 40), continuously monitor the real-time brightness value St measured by the light sensor 5, and calculate the real-time transmittance value, and record and draw the transmittance value. Transmittance recovery curve.

5. When the transmittance value returns to 90%, turn off the reference light source 3 (halogen lamp 30), and the detection is completed.

In order to be able to record the change curve of the penetration rate, the computer (data collection and processing unit 7) is connected to the computer, and the man-machine interface 70 on the computer side controls all the measurement procedures and data records. Through the communication interface on the computer side, the photochromic material ( Photochromic lens) transmittance measuring instrument for communication, the transmittance change curve is shown in Figure 3, so that the transmittance of the photochromic material 2 can be detected conveniently and accurately.

In summary, the utility model has indeed achieved the expected purpose and effect, and is more ideal and practical than those known in the art. However, the above-mentioned embodiment is only a specific description of the preferred embodiment of the utility model However, this embodiment is not intended to limit the patent scope of the utility model, and all other equal changes and modifications that are not deviated from the technical means disclosed in the utility model should be included in the claims covered by the utility model in range.

Claims (8)

1. A detection device for the transmittance of a photochromic material, characterized in that: a cabinet is provided to isolate the external light source, the cabinet is used for movable insertion of the photochromic material to be tested, and one side in the cabinet is provided with a reference A light source, the reference light source is arranged in front of the photochromic material to be tested, at least one color-changing excitation light source is provided on one side of the photochromic material, and a photosensor is provided on the other side of the photochromic material, And the reference light source, the color-changing excitation light source and the light sensor are linked to a control circuit, the control circuit is linked with the data collection and processing unit, and the link of the data collection and processing unit is responsible for the switching control of the reference light source and the color-changing excitation light source And the data collection of the light sensor, recording the collected data, converting the data into the transmittance of the photochromic material, and displaying it on the man-machine interface. 2. The device for detecting the transmittance of photochromic materials according to claim 1, wherein the reference light source is a halogen lamp, a xenon lamp, a lamp with multiple wavelengths, or a plurality of groups of lamp sources with different wavelengths. the reference light source. 3. The detection device for the transmittance of photochromic material as claimed in claim 1, characterized in that: the color-changing excitation light source is the excitation light required by the photochromic material, and is a lamp emitting UV wavelength, a UV LED or Consists of a plurality of lamps that excite wavelength ranges. 4. The device for detecting the transmittance of photochromic materials according to claim 1, wherein the light sensor is a sensor covering all spectral ranges of the reference light source. 5 . The device for detecting the transmittance of photochromic materials according to claim 4 , wherein the light sensor is CMOS, CCD, general silicon-based light sensor or solar panel. 6 . 6 . The detection device for the transmittance of photochromic materials according to claim 1 , wherein the light sensor is composed of a plurality of sensors. 7 . 7. The device for detecting the transmittance of photochromic materials according to claim 1, wherein the control circuit is a set of digital-to-analog conversion and a microprocessor. 8 . The device for detecting the transmittance of photochromic materials according to claim 1 , wherein the data collection and processing unit has functions of data collection, processing and display, and at least one display interface.

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