Handheld projection device

Optics: image projectors – Lamp control

Reexamination Certificate

Rate now

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Details

C315S160000

Reexamination Certificate

active

07891822

ABSTRACT:
The invention relates to a handheld projection system (10) comprising a projection device (14, 18, 20) for projecting an image onto a projection surface (24). The projection device has at least two drive power modes associated with different qualities of the projected image. The handheld projection system further comprises a selection device (17) for selecting one of said at least two drive power modes on the basis of the currently selected power source of the system, so that the quality of the projected image is adjusted on the basis of the power source of the handheld projection system. The handheld projection system according to the invention may easily be adapted to different situations of usage involving different requirements when it comes to projected image quality and device properties.

REFERENCES:
patent: 5258844 (1993-11-01), Nakayama et al.
patent: 5347324 (1994-09-01), Sasaki et al.
patent: 6189106 (2001-02-01), Anderson
patent: 6265846 (2001-07-01), Flechsig et al.
patent: 6900820 (2005-05-01), Kataoka et al.
patent: 7052138 (2006-05-01), Matsui
patent: 2002/0063855 (2002-05-01), Williams
patent: 2003/0011751 (2003-01-01), Sakata et al.
patent: 2003/0107883 (2003-06-01), Peinimaa et al.
patent: 2004/0017518 (2004-01-01), Stern et al.
patent: 1100277 (2001-05-01), None
patent: 04323630 (1992-11-01), None
patent: 05113604 (1993-05-01), None
patent: 2003019287 (2003-03-01), None
Mamiya et al., JP 04323630A English Translation, Nov. 12, 1992.

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

Handheld projection device does not yet have a rating. At this time, there are no reviews or comments for this patent.

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

Rate now

     

Profile ID: LFUS-PAI-O-2638448

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