Control of depth of field in three dimensional photography
CA 1108457 A · Owner: Nimslo Technology, Inc. · Inventors: Nims, Jerry C.; Lo, Allen K.W.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
In a camera for taking stereoscopic photographs wherein a lenticular screen and photosensitive film are exposed to an object field through a wide effective aperture the effective aperture size is controlled so that the image of a point on each of the nearest foreground object and the farthest background object in the object field is confined within a region of the lenticular screen which is not greater than 20 lenticules, and preferably not greater than 10 lenticules, in width.
Read the whole patent
Listed from its CIPO record in Patent Yard's archive of Canadian patents past their term. Its claims, description and drawings are in the CIPO record and on Google Patents, and the Claude kit works from them.
Why it's free to use
- Granted September 8, 1981. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended September 8, 1998.
- We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
Timeline
Timeline From CIPO dates
Sources & verification
Official CIPO records
Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.