Device for controlling luminous energy

Details Device for controlling luminous energy Device for controlling luminous energy

1993-08-30

1994-11-08

Ben, Loha

Optical: systems and elements

Light control by opaque element or medium movable in or...

With rotating or pivoting element

359201, 359204, 359226, 348203, 250230, G02B 2602

Patent

active

053632320

ABSTRACT:
A spherical integrator has beam input and output apertures. The output aperture is opened at a position to which incident beam does not directly strike. The integrator has a curved inner surface which is a uniform diffusion surface. A galvanometer scanner has a mirror capable of adjusting a reflection angle of the beam from a light source such that a luminous energy beam reflected by the mirror to the input aperture is quantitatively varied. Beam from the light source is reflected by the mirror of the scanner to the input aperture of the integrator which diffuses and integrates the incident beam and outputs it through the output aperture.

REFERENCES:
patent: 4932779 (1990-06-01), Keane
patent: 5044730 (1991-09-01), Laduke et al.
patent: 5068739 (1991-11-01), Filo
patent: 5155596 (1992-10-01), Kurtz et al.

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