Projection display

Optics: image projectors – Lens support – Lens position adjustable

Reexamination Certificate

Rate now

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Details

C353S119000, C349S057000

Reexamination Certificate

active

10901989

ABSTRACT:
If a projection display device includes a shifting mechanism for shifting a projection lens to adjust the direction in which the display projects an optical image, it is difficult to find suitable position where the display should be installed. Thus, the projection lens is fitted with a projection angle adjusting mechanism, which includes an adjusting dial having a scale representing the position of the lens relative to a display element. The projection display device is capable of automatically displaying on the projected optical image a scale image corresponding to the scale. The projection display also is capable of displaying on the projected optical image the position of the optical axis of the projection lens, which can be shifted by the adjusting mechanism.

REFERENCES:
patent: 3912385 (1975-10-01), Stokes et al.
patent: 4731706 (1988-03-01), Ricard
patent: 5465121 (1995-11-01), Blalock et al.
patent: 5895110 (1999-04-01), Okada et al.
patent: 6592228 (2003-07-01), Kawashima et al.
patent: 6671004 (2003-12-01), Runtze et al.
patent: 10-171044 (1998-06-01), None
patent: 2001-215610 (2001-08-01), None

LandOfFree

Say what you really think

Search LandOfFree.com for the USA inventors and patents. Rate them and share your experience with other people.

Rating

Projection display does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Projection display, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Projection display will most certainly appreciate the feedback.

Rate now

     

Profile ID: LFUS-PAI-O-3730513

  Search
All data on this website is collected from public sources. Our data reflects the most accurate information available at the time of publication.