SDR850Lens transmission rate tester

One: Overview

SDR850Test principle is the use of infrared 850nm Light, infrared 940nm Light and visible 550nm Light transparent substance being tested, sensors detect three kinds of light sources, respectively the incident light intensity and through a transparent substance being measured light intensity, light intensity to incident light intensity is the ratio of transmission, expressed as a percentage.

Now Smartphone, with a light sensor and distance sensors. Light sensors automatically adjust screen brightness can be achieved, and distance sensors can call when phone to automatically turn off the screen with the face distance, prevent the face accidentally touch screen operation.

Smartphone on the lenses, generally there are two small holes, for the light sensor and infrared distance sensors to penetrate. Also has a slightly larger hole for the camera. The two small holes on the lens infrared penetration, directly affects the Smartphone's light sensor and range sensor performance. All an infra-red transmission indicator is very important.

The principal plane of the lens and camera and lighting and distance sensors holes, there are requirements for light transmission rate.

Two: SDR850Parameters

1. Instrument size: Long 200mm ×Wide 180mm ×High 106mm;

2. Minimum test size: ￠1.0mm

3. Weight: about 1500Gram;

4. Resolution: Measuring value ﹤ 90%Shi, the resolution is 0.1%; Other range resolution1%

5. Measurement accuracy: better than ±2% (Uniform colorless translucent material), the factory standard model testing is better than ±1%;

6. Infrared: 850nm And 940nm Two road tests

7. Visible light: Center wavelength 550nm;

8. Power supply: 9V AC/DC Power supply, portable external lithium-ion batteries that are available.

III: Instrumentation

SDR850 lens transmittance measuring steps as follows:

1: Plug in the power, open the instrument power switch. Start self-test and calibration, calibration is complete, three panel displays the value for '100' , Through the rate indicating no analyte100%.

2: Will be tested in the test position. Three display that can be shown on the IR 850nm , Infrared 940nm And visible 550nm Wavelength transmittance. IV: characteristics of the instrument

1.All three test holes with alignment indicator LED , Used to test the process, mobile phone lens align the holes.

2.Especially suitable for mobile phone testing the infrared and visible light transmittance through the lens;

3.Instruments and has real-time dynamic auto-calibration function, automatically after power calibration 100%Through rate;

4.Minimum test size of DIA1.5mm.

5.Stainless steel bench design, attractive appearance, which the measured object placed, easy to operate.

6.Stainless steel countertops, glue fixing a lens positioned for easy lens batch testing on the production line.

Five: use steps and points for attention

1. Equipment connected to the power supply, keeping test location is empty, open the instrument switches;

2. To test into the test position;

3. Display window can be shown separately on the infrared 850nm , Infrared 940nm And visible 550nm Through rate;

4. The instrument when not in use, turn off the power;

5. When on instrument testing and calibration, test location must be empty, otherwise the calibration cannot be;

6. Avoid contact with corrosive materials, far away from high temperature and high humidity environment;

7. When used continuously for a long time, due to LED Efficiency of light sources (LED Light temperature, efficiency) causes can lead to three Windows data cannot be displayed as a 100At this time please power off the instrument, post again and self-calibration, and normal use does not affect the measurement accuracy;

8. Sometimes there may be no test when displayed data does not return to 100Shutdown restart device;