Light emitting arrangement with adjustable emission spectrum
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United States of America Patent
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-
Jan 9, 2018
Issued Date -
N/A
app pub date -
Jun 8, 2015
filing date -
Jun 10, 2014
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
A light emitting arrangement is adapted to produce white output light of a total luminous intensity Itot and having an emission peak in the wavelength range of from 400 to 440 nm, comprising: a first light emitting element adapted to emit light of a first luminous intensity I1 and having an emission peak in a first wavelength range of from 440 to 460 nm; and a second light emitting element adapted to emit light of a second luminous intensity I2 and having an emission peak in a second wavelength range of from 380 to 440 nm, wherein the first light emitting element and the second light emitting element are independently controllable such that I2 can be adjusted independently of I1. The possibility of controlling the contribution of deep blue light allows a natural appearance of a crisp white light source at all emission intensities, and may also be used to enhance perception of contrast.
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Cited Art Landscape
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