Illumination – Light source and modifier – Plural serial lens elements or components
Patent
1984-10-22
1987-02-10
Cuchlinski, Jr., William A.
Illumination
Light source and modifier
Plural serial lens elements or components
362296, 362308, 362347, 358233, F21V 700, H04N 574
Patent
active
046427406
ABSTRACT:
A high efficiency light collection system for a projector such as a light valve projector provides constant tangential magnification for all zones so that the images of the source just fills the pupil of the projection system thereby giving the best source utilization in all zones. The light collection system comprises a reflector (60) behind the source and a correcting refractor (61) in front of the source. The preferred embodiment uses an aconic reflector having continuously changing zonal focus with a single asphere corrector lens that has exactly compensating zonal focus characteristics. It is also possible to use a conic reflector, but this requires two asphere corrector lenses in order to provide the constant tangential magnification characteristics.
REFERENCES:
patent: 2273801 (1942-02-01), Landis
patent: 2298808 (1942-08-01), Ramberg
patent: 2309788 (1943-02-01), Ramberg
patent: 2453003 (1948-11-01), Edwards
patent: 2455476 (1948-12-01), Epstein
patent: 2459637 (1949-01-01), Frihart et al.
patent: 2508764 (1950-05-01), Miller
patent: 2531509 (1950-11-01), Grundmann
patent: 2590240 (1952-03-01), Epstein
patent: 2682197 (1954-06-01), Davis
patent: 2697182 (1954-12-01), Sheldon
patent: 2741940 (1956-04-01), Drodofsky
patent: 2749801 (1956-06-01), Clotar
patent: 3107296 (1963-08-01), Hine
patent: 3290436 (1966-12-01), Good et al.
patent: 3325592 (1967-06-01), Good et al.
patent: 3345462 (1967-10-01), Good et al.
patent: 3538249 (1970-11-01), Graser, Jr. et al.
patent: 4305099 (1981-12-01), True et al.
patent: 4389701 (1983-06-01), Phillips
Cox D. M.
Cuchlinski Jr. William A.
General Electric Company
LandOfFree
Constant magnification light collection system does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Constant magnification light collection system, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Constant magnification light collection system will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-2366461