Planetarium and point light source for use in same

Details Planetarium and point light source for use in same Planetarium and point light source for use in same

2006-02-28

2006-02-28

Perkey, W. B. (Department: 2851)

Optics: image projectors

Projected image combined with real object

C353S122000, C434S284000, C434S286000, C434S287000, C362S559000

Reexamination Certificate

active

07004588

ABSTRACT:
Featured is a portable planetarium device suitable for use in projecting clear bright images of stars, planets, and other celestial objects onto a curved viewing surface. The portable planetarium devices of the invention comprise a point light source generators, a light dispersing lens assembly, and an opaque enclosure having transparent domains surrounding the light dispersing lens assembly. Also featured is a portable point light source comprising a light source, a light collection element and a light conducting conduit suitable for use in providing high intensity light with a small cross-sectional area.

REFERENCES:
patent: 4020568 (1977-05-01), Tajima et al.
patent: 4776666 (1988-10-01), Kuehn et al.
patent: 5278596 (1994-01-01), Machtig
patent: 5857760 (1999-01-01), Pelton
patent: 5903388 (1999-05-01), Sedlmayr
patent: 6568814 (2003-05-01), Rodriguez et al.
patent: 6623126 (2003-09-01), Sekiguchi et al.
patent: 6698900 (2004-03-01), Young et al.
patent: 2003/0151727 (2003-08-01), Glent-Madsen et al.

Affiliated with

Also associated with

Rating

Planetarium and point light source for use in same does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Planetarium and point light source for use in same, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Planetarium and point light source for use in same will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-3698155