Electrical lighting unit has a light output plate that is coated with anti reflection material

摘要

The electrical lighting unit has a reflector [1] with a light output on the underside [7]. A high pressure discharge lamp [5] is the source. The internal shape of the housing is wedge shaped. The output plate is coated on both sides with an anti reflection coating. The bulb is position such that it lies values of 0.01 to 1.7 of the ratio of height from the base and length from the tip edge of the wedge.