APPARATUS, METHOD TO CHANGE LIGHT SOURCE COLOR TEMPERATURE WITH REDUCED OPTICAL FILTERING LOSSES

APPARATUS, METHOD TO CHANGE LIGHT SOURCE COLOR TEMPERATURE WITH REDUCED OPTICAL FILTERING LOSSES

The efficiency and color temperature of a lighting device may be improved by using wavelength shifting material, such as a phosphor, to absorb less desired wavelengths and transmit more desired wavelengths. A reflective filter (e.g., dichroic or dielectric mirror material) may pass desired wavelengt...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser: RENN, John, O, REED, William, G
Format: Patent
Sprache:eng ; fre ; ger
Schlagworte:
BLASTING
FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMSTHEREOF
HEATING
LIGHTING
MECHANICAL ENGINEERING
STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHERARTICLES, NOT OTHERWISE PROVIDED FOR
WEAPONS
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Beschreibung
Zusammenfassung:The efficiency and color temperature of a lighting device may be improved by using wavelength shifting material, such as a phosphor, to absorb less desired wavelengths and transmit more desired wavelengths. A reflective filter (e.g., dichroic or dielectric mirror material) may pass desired wavelengths while returning or reflecting less desired wavelengths away from an optical exit back toward wavelength shifting material which may either be disposed in the optical path or on the periphery of the light source.