Light emitting device with controlled spectral characteristics and angular distribution

Title:

Light emitting device with controlled spectral characteristics and angular distribution

Document Type and Number:

Japanese Patent JP6295266

Kind Code:

B2

Abstract:

A light emitting arrangement comprises: —a plurality of solid state light sources, forming at least one group of light sources, arranged to provide a light distribution comprising a first light portion and a second light portion, and —at least one optical component adapted to at least partly collimate light emitted by said light sources, to yield output light exiting the light emitting arrangement comprising central output light and peripheral output light, wherein said central output has a dominant wavelength of 555±20 nm and a light intensity of at least 3 cd/m2, and said peripheral output light has a dominant wavelength of 507±30 nm and a light intensity of less than 3 cd/m2. The light emitting arrangement thus provides an emission spectrum which is related to the intensity and the direction of emitted light, and can be adapted to enhance the visibility of objects and colors directly beneath the light emitting arrangement as well as at a distance therefrom. The light emitting arrangement is therefore particularly well suited for outdoor illumination at poor ambient light conditions, such as at dawn, dusk, and dark.

Inventors:

Fan Bommel Tice
Hikumet Rifato Attamstafa

Application Number:

JP2015543562A

Publication Date:

March 14, 2018

Filing Date:

November 28, 2013

Export Citation:

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