Illumination – Light source and modifier – Plural serial lens elements or components
Patent
1988-08-26
1990-07-03
Henry, Jon W.
Illumination
Light source and modifier
Plural serial lens elements or components
350167, 355 67, F21V 704, G02B 2700
Patent
active
049396307
ABSTRACT:
An illumination optical apparatus includes secondary light source forming means for forming a plurality of light source images from collimated light beams emitted from a light source, tertiary light source forming means arranged midway along an optical path from the secondary light source forming means, and a condenser lens arranged midway along an optical path from the tertiary light source forming means. The secondary light source forming means includes an optical integrator having entrance and exit surface. A plurality lens surface having a larger focal length than a distance between the entrance and exit surfaces are formed on the entrance sarfaces. Thus, a plurality of secondary light source images are formed by the secondary light source forming means in a space behind the exit surface of the optical integrator.
REFERENCES:
patent: 3501626 (1970-03-01), Benard
patent: 3941475 (1976-03-01), Sheets
patent: 3988066 (1976-10-01), Suzuki et al.
patent: 4497013 (1985-01-01), Ohta
patent: 4497015 (1985-01-01), Konno et al.
patent: 4619508 (1986-10-01), Shibuya et al.
patent: 4682885 (1987-07-01), Torigoe
patent: 4683524 (1987-07-01), Ohta
patent: 4717242 (1988-01-01), Echizen et al.
patent: 4769750 (1988-09-01), Matsumoto et al.
patent: 4789222 (1988-12-01), Ota et al.
Kikuchi Tetsuo
Kudoh Yuji
Matsumoto Koichi
Nakagawa Masahiro
Ozawa Haruo
Henry Jon W.
Nikon Corporation
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