Optics: image projectors – Selective data retrieval – Plural picture rows on single microcard
Patent
1974-09-09
1976-03-09
Haroian, Harry N.
Optics: image projectors
Selective data retrieval
Plural picture rows on single microcard
G03B 2111, G03B 2114, G03B 2308
Patent
active
039428850
ABSTRACT:
A reader in which mircofiche film is manually moved in a rectilinear fashion by moving the film with respect to a holder in the first direction and moving the holder in a perpendicular second direction. The holder includes a light passage slot. A light source is mounted beneath the holder and an image projecting and enlarging optic is mounted in alignment with the source above the holder. A low friction annular spacer such as a Teflon O-ring rests directly on the film, is concentric with the optic and accurately spaces the optic from the film while maintaining film beneath the optics taut to assure proper image focusing. Film indexing is performed by moving the film while the optic supporting Teflon O-ring remains in contact with the film.
REFERENCES:
patent: 2159616 (1939-05-01), Kleerup
patent: 3424524 (1969-01-01), Akiyama et al.
patent: 3720462 (1973-03-01), Dali et al.
patent: 3799662 (1974-03-01), Veda et al.
IBM Technical Disclosure Blt., F. W. Landsiedel et al., "Constant Focus Image Projection" Vol. 13, No. 7, 12/70.
Haroian Harry N.
Microform Data Systems, Inc.
LandOfFree
Microfiche reader does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Microfiche reader, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Microfiche reader will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-830425