Optical Detector Unit, UV Index Sensor, and Method for Multispectral Light Sensing, in particular for determining the UV Index
Assigneeams-OSRAM AG
InventorGunter SIESS
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Abstract
An optical detector unit comprising an optical sensor arranged in a chamber with an aperture in a housing is provided, said optical sensor arranged to detect received photons through the aperture, wherein said optical sensor comprises a number of sensor channels, each channel comprising a sensor pixel and an optical filter associated with said sensor pixel enabled to perform for UV Index determination at enhanced accuracy and data reliability. At least two, e.g., three, of said channels are designed as UVI measurement channels, each UVI measurement channel having a spectral responsivity with a peak wavelength between 280 nm and 370 nm.
Claims12
An optical detector unit comprising an optical sensor, wherein said optical sensor comprises a number of sensor channels, each channel comprising a sensor pixel and an optical filter-associated with said sensor pixel, and wherein at least two of said channels are designed as UVI measurement channels, each UVI measurement channel having a spectral responsivity with a peak wavelength between 280 nm and 370 nm.
A method for multispectral light sensing, comprising the steps of:
- detecting received photons by means of an optical sensor arranged in a chamber in a housing through an aperture of said chamber,
- wherein said optical sensor comprises a number of sensor channels, each channel comprising a sensor pixel and an optical filter associated with said sensor pixel, and wherein at least two of said channels are designed as UVI measurement channels, each UVI measurement channel having a spectral responsivity with a peak wavelength between 280 nm and 370 nm,
- for each UVI measurement channel generating a UVI measurement channel signal, and
- generating an output sensor signal of the optical sensor and characteristic for the UV Index from the UVI measurement channel signals of each of said UVI measurement channels.
Dependencies are inferred from the claim text.