Optical sensor arrangement and method for generating an analog output signal
US9608132B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 10, 2015 |
| Grant date | Mar 28, 2017 |
| Priority date | — |
| Expiry date | Oct 6, 2035 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01S17/10
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
An optical sensor arrangement (10) comprises a light sensor (11) that is connected to a summation node (13) and is designed for generating a sensor current (S2), a current source (S2) connected to the summation node (13) and designed to provide a source current (S3), and an integrator (21) that is coupled to the summation node (13) and is designed for generating a first value (VP1) of an integrator signal (S6) by integrating during a first phase (P1) and for generating a second value (VP2) of the integrator signal (S6) by integrating during a second phase (P2). The optical sensor arrangement (10) comprises a sum and hold circuit (31) that is coupled to the integrator (21) and is designed to generate an analog output signal (S7) as a function of a difference of the first value (VP1) and the second value (VP2) of the integrator signal (S6).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.