Exposure count indicator for camera
US6298200A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Nov 19, 1999 |
| Grant date | Oct 2, 2001 |
| Priority date | — |
| Expiry date | Nov 19, 2019 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03B1/66
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
An exposure count indicator for providing a visible indication of the number of frames that remain available to be exposed or are actually exposed on a filmstrip in a camera, comprises a numerical scale of successive exposure count indicia at least divided into an initial range of indicia that are evenly spaced from one another a particular distance and a remaining range of indicia that are evenly spaced from one another a different distance less than the particular distance the exposure count indicia that are in the initial range are spaced from one another, in order that when one views the respective indicia in the remaining range after all of the indicia in the initial range have been viewed it can serve as a warning that one is coming closer to the end of the filmstrip because the indicia in the remaining range are spaced apart a lesser distance than the indicia in the initial range. Preferably, a movable indicating element is supported for movement relative to the exposure count indicia to first operate as a pointer successively at the respective indicia in the initial range and then operate as a pointer successively at the respective indicia in the remaining range.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.