Illuminating optical apparatus and method

Details Illuminating optical apparatus and method Illuminating optical apparatus and method

1995-06-02

1997-08-19

Epps, Georgia Y.

Optical: systems and elements

Lens

With reflecting element

359619, 359738, 359740, 355 67, G02B 1700

Patent

active

056594291

ABSTRACT:
An illuminating optical apparatus for performing, e.g., oblique illumination has an arrangement in which an image of a reflecting mirror for reflecting a light beam from a light source is formed while being curved. With this arrangement, an annular secondary source with a light intensity distribution having moderate tails can be obtained.

REFERENCES:
patent: 4789222 (1988-12-01), Ota et al.
patent: 5251067 (1993-10-01), Kamon

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