Film unit with a lens attached
US6222994A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Apr 20, 1999 |
| Grant date | Apr 24, 2001 |
| Priority date | — |
| Expiry date | Apr 20, 2019 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03B2219/045
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A film unit is provided with an unexposed film chamber in which an unexposed film is accommodated beforehand; a photographing lens through which the unexposed film is imagewise exposed; a film wind-up chamber; a spool provided in the film wind-up chamber, holding an end portion of the film, and having a rotation center on which the spool is rotated so that the exposed film is wound up into the film wind-up chamber; a spool engaging member for engaging with the spool; and a wind-up operating member located at an eccentric position from the rotation center of the spool and for engaging with the spool engaging member so that the wind-up operating member rotates the spool through the spool engaging member.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.