Thin stackup for diffuse fluorescence system
US10345239B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 16, 2017 |
| Grant date | Jul 9, 2019 |
| Priority date | — |
| Expiry date | Aug 16, 2037 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01N2201/08
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
The present disclosure relates to optical systems for fluorescence-based imaging. An example optical system includes an image sensor. The image sensor is sensitive to at least a first wavelength of light and a second wavelength of light. The optical system also includes a light guiding layer optically coupled to the image sensor and a light source positioned to emit light into a side surface of the light guiding layer. The emitted light includes light at the first wavelength and the emitted light is transmitted in an in-plane direction in the light guiding layer. The optical system further includes a thin film filter and an output coupler optically coupled to the light guiding layer. At least a portion of the emitted light transmitted in an in-plane direction in the light guiding layer is coupled out of the light guiding layer in an out-of-plane direction via the output coupler.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.