Translucent object presence and condition detection based on detected light intensity
US9885803B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Mar 24, 2016 |
| Grant date | Feb 6, 2018 |
| Priority date | — |
| Expiry date | Mar 24, 2036 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03B21/2086
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
In embodiments of translucent object presence and condition detection based on detected light intensity, a light is emitted and directed at a first edge of a translucent object along its thickness to pass through the translucent object, such as a lens. An intensity of the light is detected proximate an opposing, second edge of the translucent object. A presence and/or a condition of the translucent object can then be determined based on the detected intensity of the light that passes through the translucent object, where the detected intensity of the light that passes through the translucent object is relative and indicates one of: the presence of the translucent object based on a lower intensity of the light, or the translucent object is not present based on a higher intensity of the light.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.