| 摘要 |
A method of manufacturing a light emitting unit includes steps of previously setting a threshold of luminous intensity, measuring luminous intensity of a measured light emitting unit, calculating an offset value between the threshold of luminous intensity and the measured luminous intensity, performing absorption of light by a light absorbing portion direct proportion to the offset value, and positioning the designed light absorbing portion onto an optical element of the measured light emitting unit. While light beam is radiated from the measured light emitting unit and passed through the light absorbing portion, few light energy is absorbed by the light absorbing portion to decrease the luminous intensity. Therefore, the light emitting unit with the light absorbing portion has a consistent luminous intensity due to the light absorbing ratio of the light absorbing portion is direct proportion to the offset luminous intensity.
|
