4.6 UNEVEN LIGHT INTENSITY CORRECTION
The entire exposure lamp surface is frosted to ensure even exposure.
To compensate for reduced light at the edge of the lens, a shading plate is
placed in front of the lens. The shading plate is fixed to the lens unit.
The shading plate corrects the light intensity when the lens horizontal
position is shifted (from [A] to [C]).
Also, two shading mylars [D] intercept any stray reflected light from outside
the light path.
[D]
[A] [B] [C]
Original
Shading Plate
Exposure
Intensity
Illumination
Distribution
[A] [B]
[C]
A156/A160/A162 2-46 STM
To Next Page
Loading...
