Pinhole camera with an integrated lens cleaning chamber, and a lens cleaning system for a pinhole camera
US10739581B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Apr 9, 2018 |
| Grant date | Aug 11, 2020 |
| Priority date | — |
| Expiry date | Jan 17, 2039 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01N2021/8917
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
The invention relates to a pinhole camera comprising a cleaning chamber for maintaining the quality of images taken by the pinhole camera, the pinhole camera comprising a lens having a rectangular cross-section, a cover glass in front of the lens, for preventing the access of washing liquid, air and impurities into the camera. Furthermore, the camera comprises a cleaning chamber formed between the cover glass and the wall comprising the pinhole of the pinhole camera by means of a flange, the flange being provided with an opening from which compressed air and washing liquid can be supplied by a tube into the cleaning chamber, for cleaning the cleaning chamber. The compressed air and the washing liquid are configured to exit the cleaning chamber via the pinhole of the pinhole camera. Furthermore, the invention relates to a web monitoring beam and a system for cleaning the pinhole camera.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.