Lighting device
AssigneeOSRAM GmbH
InventorsJan Oliver Drumm, Jens Richter
Life of this patent
Estimating the term…
Abstract
In various embodiments, a lighting device is provided. The lighting device includes a phosphor volume for at least partial wavelength conversion of primary light into secondary light, a primary light semiconductor light source for irradiating the phosphor volume with primary light, a measurement light generating arrangement for generating measurement light having a spectral composition outside the primary light and the secondary light, a measurement light detector sensitive to the measurement light, and a measurement light filter, which is fixedly connected to the phosphor volume and is optically arranged between the measurement light generating arrangement and the measurement light detector.
Claims15
A lighting device, comprising:
- a phosphor volume for at least partial wavelength conversion of primary light into secondary light;
- a primary light semiconductor light source for irradiating the phosphor volume with primary light;
- a measurement light generating arrangement for generating measurement light having a spectral composition outside the primary light and the secondary light;
- a measurement light detector sensitive to the measurement light;
- and
- a measurement light filter, which is fixedly connected to the phosphor volume and is optically arranged between the measurement light generating arrangement and the measurement light detector.
A headlight, comprising:
- at least one lighting device, comprising:
- a phosphor volume for at least partial wavelength conversion of primary light into secondary light;
- a primary light semiconductor light source for irradiating the phosphor volume with primary light;
- a measurement light generating arrangement for generating measurement light having a spectral composition outside the primary light and the secondary light;
- a measurement light detector sensitive to the measurement light;
- and
- a measurement light filter, which is fixedly connected to the phosphor volume and is optically arranged between the measurement light generating arrangement and the measurement light detector.
Dependencies are inferred from the claim text.