Method of light dispersion and preferential scattering of...

H - Electricity – 01 – L

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H01L 33/00 (2006.01)

Patent

CA 2645228

A method for preferential scattering of certain wavelengths of light and/or dispersing light in an LED or LED bulb. The method includes emitting light from at least one LED die, and scattering the light from the at least one LED die by dispersing a plurality of particles having a size a fraction of at least one dominant wavelength of the light from the at least one LED die in the LED outer shell or in an LED bulb or in an at least one shell of an LED bulb. Alternatively, the method includes emitting light from the at least one LED die, and dispersing the light from the at least one LED die by distributing a plurality of particles having a size one to a few times larger than a dominant wavelength of the light from the LED in an outer shell, or body of the LED bulb.

L'invention concerne un procédé destiné à diffuser de façon préférentielle certaines longueurs d'onde de lumière et/ou à disperser une lumière dans une DEL ou une ampoule DEL. Le procédé consiste à émettre de la lumière à partir d'au moins une matrice de DEL, et à diffuser la lumière à partir d'au moins une matrice de DEL par dispersion de plusieurs particules possédant la taille d'une fraction d'au moins une longueur d'onde de lumière dominante à partir d'au moins une matrice de DEL dans l'habillage de la DEL ou dans l'ampoule DEL. Dans un autre mode de réalisation, le procédé consiste à émettre de la lumière à partir d'au moins une matrice de DEL, et à disperser cette matrice de DEL par distribution de plusieurs particules possédant une taille une à plusieurs fois supérieure à celle d'une longueur d'onde de lumière dominante à partir de la DEL dans l'habillage, ou du corps de l'ampoule DEL.

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