Projecting-type display apparatus

Details Projecting-type display apparatus Projecting-type display apparatus

1994-06-29

1996-04-09

Groody, James J.

Television

Video display

Projection device

348827, 348785, H04N 574

Patent

active

055066291

ABSTRACT:
Projecting-type display apparatus, wherein an image forming means frame is supported in such a manner as to be rotatable within a first plane perpendicular to an optical axis of a projection lens, and within a second plane including the optical axis and perpendicular to the first plane. A projecting-type display apparatus comprising means for changing the distance between an image forming means frame and a lens frame continuously or stepwise. A projecting-type display apparatus comprising means for changing the field angle of a projection unit having image forming means and projection lens with respect to a sreen cointinuously or stepwise.

REFERENCES:
patent: 3037072 (1962-05-01), Mendoza et al.
patent: 4606628 (1986-08-01), Vance
patent: 5298984 (1994-03-01), Numata

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