CN212779565U

CN212779565U - Distribution radiometer

Info

Publication number: CN212779565U
Application number: CN202021158458.7U
Authority: CN
Inventors: 潘建根; 许耀东; 黄伟刚; 黄艳
Original assignee: Hangzhou Everfine Photo E Info Co Ltd
Current assignee: Hangzhou Everfine Photo E Info Co Ltd
Priority date: 2020-06-22
Filing date: 2020-06-22
Publication date: 2021-03-23
Anticipated expiration: 2030-06-22

Abstract

The utility model discloses a distribution radiometer, which comprises a sample to be measured; the first rotary table is used for clamping the sample to be detected to translate or rotate in space; a broadband light detection unit; the monitoring unit is arranged on the first rotary table, and keeps the relative position with the sample to be detected unchanged when monitoring the fluctuation of the sample to be detected; the number of the monitoring units is two or more, and the monitoring units are respectively cut into the measurement area to monitor the sample to be measured; the broadband detection unit and the monitoring unit respectively carry out synchronous measurement and monitoring on the sample to be detected. The utility model can realize the fluctuation monitoring and real-time correction during the test, and further ensure the accuracy of the measurement; and two or more monitoring units can be respectively switched in or out of the measuring light path, and the to-be-measured sample is respectively synchronously measured and subjected to fluctuation monitoring in the measuring areas, so that the monitoring units are prevented from shielding the measuring areas to cause measuring errors.

Description

Distribution radiometer

Technical Field

The utility model relates to a photoelectric test field, concretely relates to distribution radiometer.

Background

The light distribution characteristics of the light source determine its light design, and thus accurate measurement of the optical distribution characteristics of the light source product is required.

In the existing light distribution measurement technology, a turntable is generally used as a rotating tool, a light source is rotated, and an optical radiation detector measures the radiant quantity of different angles at a fixed position, so that light distribution data are obtained. However, for a pulse power supply light source or a gas discharge light source, in the measurement process, the light source radiation often fluctuates correspondingly due to the difference of pulse waveforms or the vibration of the turntable, so that a certain error exists in the measurement result, and the above technical problems need to be solved urgently.

SUMMERY OF THE UTILITY MODEL

Not enough to prior art, the utility model provides a distribution radiometer aims at solving among the prior art to influencing the technical problem who measures the accuracy owing to the sample that awaits measuring is undulant.

The utility model discloses a distribution radiometer, which comprises a sample to be measured; the first rotary table is used for clamping the sample to be detected to translate or rotate in space; a broadband light detection unit; the monitoring unit is arranged on the first rotary table, and keeps the relative position with the sample to be detected unchanged when monitoring the fluctuation of the sample to be detected; the number of the monitoring units is two or more, and the monitoring units are respectively cut into the measurement area to monitor the sample to be measured; the broadband light detection unit and the monitoring unit respectively carry out synchronous measurement and monitoring on the sample to be detected.

Because the light-emitting of the sample to be measured can fluctuate under the influence of external or internal factors during the rotation measurement, the distributed radiometer of the utility model can realize the fluctuation monitoring and real-time correction during the measurement by arranging the monitoring unit, thereby further ensuring the accuracy of the measurement; and two or more monitoring units can be respectively switched in or out of the measuring light path, and the to-be-measured sample is respectively synchronously measured and subjected to fluctuation monitoring in the measuring areas, so that the monitoring units are prevented from shielding the measuring areas to cause measuring errors.

It should be noted that the first turntable can translate and rotate in space, and the specific arrangement of the first turntable is not specifically limited herein, and those skilled in the art can make corresponding adjustments and changes according to the testing requirements and common knowledge.

Optionally, the sample to be tested is a pulse test sample or other broadband test sample.

In some optional embodiments, a spectral radiation measurement unit is further included.

Optionally, a cosine corrector or an integrating sphere is arranged in front of a receiving window of the spectral radiation measuring unit. By providing a cosine corrector or an integrating sphere, the light received by the spectral radiating unit can be made uniform.

Optionally, a distance between a light receiving port of the spectral radiation measuring unit and the sample to be measured is smaller than a distance between the broadband light detecting unit and the sample to be measured; the spectral radiation measuring unit may be switched in and out between the first turntable and the broadband light detection unit.

In some optional embodiments, further comprising a second turntable, the broadband light detection unit being arranged on the second turntable. Through setting up the second revolving stage, the cooperation first revolving stage can provide more diversified measurement mode for the test procedure is nimble more changeable.

It should be noted that the second turntable can translate and rotate in space, and the specific arrangement of the second turntable is not specifically limited herein, and those skilled in the art can make corresponding adjustments and changes according to the testing requirements and common knowledge.

In some optional embodiments, the apparatus further comprises a temperature control unit disposed on the first turntable, and the sample to be tested is in thermal contact with the temperature control unit. In order to overcome the problem that the light output characteristics of the to-be-detected sample change along with the environmental factors (such as voltage, environmental temperature and humidity memory, temperature rise of the to-be-detected sample and the like) after the to-be-detected sample is powered on, the constant temperature is realized through the temperature control unit, and then the stability of the light output of the to-be-detected sample is ensured.

Optionally, the temperature control unit includes a heat sink, a heater, and a drive control unit. The sample to be measured is contacted with the heat sink, the heat sink is contacted with the heater, and the sample is heated by the heater; the driving control unit is connected with the heater and controls the operation of the heater.

In some optional embodiments, the test device further comprises an electrical measurement unit, wherein the electrical measurement unit is arranged on the first rotary table and electrically connected with the sample to be tested. The electrical measurement unit is used for monitoring the electrical parameter changes of the sample to be measured, such as voltage, current and the like. The performances can be used for reflecting the luminous stability of a sample to be measured, and the measurement precision is further guaranteed.

Optionally, the electrical measurement unit is an ammeter.

In some optional embodiments, the electrical measurement unit and the temperature control unit are electrically coupled. Through the embodiment, the cooperation and feedback of the temperature control unit and the electric measurement unit can be realized, namely, the temperature control unit controls the working temperature of the sample to be measured in a refrigerating and heating mode according to the electric parameters of the sample to be measured by the electric measurement unit, and the control of the working temperature of the sample to be measured is realized by utilizing the incidence relation between the electric parameters of the sample to be measured and the junction temperature of the sample to be measured.

In some optional embodiments, the broadband light detection unit is a plurality of units, and the plurality of broadband light detection units are arranged at different distances from the first turntable. The plurality of broadband light detection units can meet the test requirements of different distances, test data is enriched, and the evaluation on the sample to be tested is more objective and accurate.

In some optional embodiments, the system further comprises a motor and a guide rail, wherein the motor controls the broadband light detection unit to move on the guide rail. Through the transmission of guide rail, can realize that broadband light detection unit is right the optical measurement of the different distances of the sample that awaits measuring, richen test data, it is more objective accurate to the evaluation of the sample that awaits measuring.

In some optional embodiments, the broadband light detection device further comprises a control unit, wherein the control unit controls the sample to be detected to be lightened according to a set time sequence, and controls the broadband light detection unit and the spectral radiation measurement unit to measure the sample according to the set time sequence. In order to realize intelligent and automatic testing process, the broadband light detection unit and the spectral radiation measurement unit are switched by the control unit to measure the sample to be tested according to time sequence, so that the time and labor cost can be saved to the maximum extent. The timing sequence is typically set to vary depending on the properties of the sample to be tested and the testing requirements.

Drawings

Fig. 1 is a schematic view of a distributed radiometer according to an embodiment of the present invention;

fig. 2 is a schematic view of another distributed radiometer according to an embodiment of the present invention.

Detailed Description

As shown in fig. 1, the utility model provides a distribution radiometer, which comprises a sample 2 to be measured; the first rotary table 1 is used for clamping a sample 2 to be detected to translate or rotate in space; a broadband light detection unit 3;

monitoring units

51, 52, the

monitoring units

51, 52 being provided on the first turntable 1; the broadband light detection unit 3 measures the sample 2 to be measured in the measurement area B, and synchronously, the monitoring unit 51 monitors the waveband of the sample 2 to be measured in the measurement area a, and the monitoring unit 52 cuts out the optical path. Through the above arrangement, measurement and monitoring can be simultaneously realized, and the monitoring unit 51 does not have influences such as shielding on the measurement of the broadband light detection unit 3.

As shown in fig. 2, the utility model provides a distribution radiometer, which comprises a sample 2 to be measured; the first rotary table 1 is used for clamping a sample 2 to be detected to translate or rotate in space; a second turntable 6, on which the broadband light detection unit 3 is disposed; the distance between a light receiving port of the spectral radiation measuring unit 4 and the sample 2 to be measured is smaller than the distance between the broadband light detecting unit 3 and the sample 2 to be measured; the spectral radiation measuring unit 4 can be switched in and out between the first stage 1 and the broadband light detection unit 3. The device further comprises

monitoring units

51 and 52, wherein the

monitoring units

51 and 52 are arranged on the first rotary table 1 and used for monitoring the fluctuation of the sample 2 to be detected.

In the above embodiment, when the sample 2 to be measured is measured, the spectral radiation measuring unit 4 is first switched into the measurement optical path to obtain the spectral information and the waveband information of the sample 2 to be measured, and the calibration coefficient of the broadband light detecting unit 3 is adjusted according to the waveband information. The spectral radiation measuring unit 4 cuts out a measuring light path, and the broadband light detection unit 3 measures a sample to be measured. The first rotary table 1 and/or the second rotary table 2 rotate; the monitoring unit 52 cuts into the measuring light path, monitors the wave band of the sample to be measured in the measuring area B, and the broadband light detection unit 3 measures the optical parameters of the sample to be measured in the measuring area A (at this moment, the monitoring unit 51 is in a cut-out state), so that the sample to be measured is synchronously measured and monitored in a fluctuation mode, and the shielding in the measuring process is avoided, and the measuring accuracy is improved.

While the present invention has been described with reference to the embodiments, it will be understood by those skilled in the art that the above embodiments are for illustrative purposes only and are not intended to limit the scope of the present invention. It will be appreciated by those skilled in the art that modifications may be made to the above embodiments without departing from the scope and spirit of the invention. The scope of protection of the invention is defined by the appended claims.

Claims

1. A distributed radiometer, comprising

A sample to be tested; the first rotary table is used for clamping the sample to be detected to translate or rotate in space; a broadband light detection unit;

the monitoring unit is arranged on the first rotary table, and keeps the relative position with the sample to be detected unchanged when monitoring the fluctuation of the sample to be detected;

the monitoring units are two or more and are respectively cut into the measuring area to monitor the sample to be measured

The broadband light detection unit and the monitoring unit respectively carry out synchronous measurement and monitoring on the sample to be detected.

2. The distributed radiometer of claim 1, further comprising a spectral radiometer unit having a light receiving port at a distance from the sample to be measured that is less than a distance of the broadband light detection unit from the sample to be measured, the spectral radiometer unit being operable to be switched in and out between the first turntable and the broadband light detection unit.

3. The distributed radiometer of claim 2, wherein a cosine corrector or an integrating sphere is further disposed in front of the receiving window of the spectral radiometer unit.

4. The distributed radiometer of claim 1, further comprising a second turntable, the broadband light detection unit disposed on the second turntable.

5. The distributed radiometer of claim 1, further comprising a temperature control unit disposed on the first turntable, the sample to be measured being in thermal contact with the temperature control unit.

6. The distributed radiometer of claim 1, further comprising an electrical measurement unit disposed on the first turntable and electrically connected to the sample under test.

7. The distributed radiometer of claim 1, wherein the broadband light detection unit is a plurality of units, the plurality of units being disposed at different distances from the first turntable.

8. The distributed radiometer of claim 1, further comprising a motor and a guide rail, wherein the motor controls the broadband light detection unit to move on the guide rail to perform optical measurements of different distances of the sample to be measured.

9. The distributed radiometer of claim 2, further comprising a control unit, wherein the control unit controls the sample to be measured to be illuminated at a set timing, and controls the broadband light detection unit and the spectral radiance measurement unit to measure the sample at a set timing.