. LED Module

Since the reflectivity of the reflector can be obtained from the China Institute of Metrology  LED Bulb  standard data , the transformation between illumination brightness easily obtained on standard white luminance value L. According to the luminance value L can be completed on luminance meter calibration correction .

After completion of the calibration , remove the light intensity standard lamp with white board, install the test LED lights, radiance of the sample is measured . Also in generating 500 lx illumination distance, as well as the angular position of maximum intensity C: 180. 0 ° / G: 59. 0 °, adjust the brightness meter focal length, so that the light -emitting surface luminance meter completely clear in the image plane on measuring the lamp radiance values obtained FOV average luminance value and a luminance spectral distribution data . LED Module

Finally, in the same test conditions and brightness , the measurement of the light intensity distribution of the apparent lamp , the light source to obtain the apparent value of the chord angle .   LED Flexi Strip

As the eye in the physical limitations in the still image on the retina of the eye is a minimum of corners 0.0017 radians. When the observation time is greater than 0. 25 s , the rapid eye movements will cause image blur light , covering a larger area on the retina , forming a larger perspective on the corners ,

 CCD imaging tests can be obtained through the table on the side of the light source angle and light intensity distribution . Radiation exposure time to test a specific area of the different bands of light emitted radiation exposure parameters as follows: