REFLECTION LED LIGHTING SYSTEM WITH INCLINED EMISSION ANGLE

摘要

PROBLEM TO BE SOLVED: To provide a reflection LED lighting system that has overall flat light distribution by inclining an emission angle of the LED unit to the right- angled axis of a device substrate surface to decrease useless infrared emission. SOLUTION: An emission surface of 2 reflection LED unit 1-1 is inclined at a predetermined angle θ1-1 outside the device substrate surface, and the emission surface of the reflection LED unit 1-2 is inclined at the angle θ1-2 that is somewhat smaller than θ1-1 . Thus, each of the reflection LED units 1-2...1-n is provided so that each unit light distribution properties 2-1...2-n are arranged at equal intervals. An overall flat light distribution property shown by a numeral 2 can be obtained. A mechanism to adjust the degree of irradiation angle is provided in each reflection LED unit device.