Two lens optical package and method of making same
CA 1269267 C · Owner: Rca Corporation · Inventors: Toda, Minoru
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
An optical package includes a first lens assembly and a second lens assembly aligned such that their optical axes are common. The first lens assembly comprises a divergent light source disposed along the optical axis of a first lens such that the object distance is less than the focal length of the first lens. The second lens assembly comprises a body, having a light acceptance angle less than the angle of divergence of the light source disposed along, the optical axis of a second lens such that the object distance is greater than the focal length of the second lens. The assemblies are disposed such that the images formed by each assembly alone correspond in position along the common axis …
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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 May 22, 1990. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended May 22, 2007.
- 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.