Linear led lighting arrangement including light emitting phosphor

A photoluminescent material and solid-state light technology, applied in lighting devices, components of lighting devices, optical elements used to change the spectral characteristics of emitted light, etc., can solve problems such as time-consuming and difficult to maintain color uniformity

Inactive Publication Date: 2015-03-11
INTEMATIX
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Furthermore, with the phosphor distributed within the epoxy, it can be difficult to maintain color uniformity of the light emitted by these LEDs because light traveling through different path lengths will encounter and be absorbed by different amounts of the phosphor.
Furthermore, fabrication of such LEDs is time consuming due to encapsulation and subsequent placement of the lens

Method used

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  • Linear led lighting arrangement including light emitting phosphor
  • Linear led lighting arrangement including light emitting phosphor
  • Linear led lighting arrangement including light emitting phosphor

Examples

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Embodiment Construction

[0055] For a better understanding of the invention, embodiments of the invention will now be described, by way of example only, with reference to the accompanying drawings.

[0056] refer to figure 2 , which shows an LED lighting arrangement 20 for generating light of a selected color, eg white light. The lighting arrangement 20 comprises LED chips 22, preferably gallium nitride chips, operable to generate light (ie radiation) at a wavelength preferably in the range of 300nm to 500nm. The LED chips 22 are mounted inside a stainless steel housing or reflective cup 24 that has metallic silver deposited on its inner surface to reflect light towards the output of the lighting arrangement. A convex lens 26 is provided to focus the light output from the arrangement. In the illustrated example, lens 26 is substantially hemispherical in form. Lens 26 may be made of plastic material (eg polycarbonate, acrylic, silicone) or glass (eg silica based glass) or any material that is subst...

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PUM

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Abstract

A solid-state linear lamp comprises a co-extruded component, the co-extruded component comprising an elongate lens and a layer of photoluminescent material. The elongate lens is for shaping light emitted from the lamp and comprises an elongate interior cavity. The layer of a photoluminescent material is located on an interior wall of the elongate interior cavity. The lamp further comprises an array of solid-state light emitters configured to emit light into the elongate interior cavity.

Description

technical field [0001] The present invention relates to solid state linear lighting applications that include light emitting phosphors (photoluminescent materials) to produce light of a desired color in a different portion of the wavelength spectrum than the solid state light emitters. In particular, but not exclusively, the present invention relates to LED-based lighting arrangements which produce light in the visible part of the spectrum, and in particular, but not exclusively, white light. Furthermore, the invention provides an optical assembly for such a lighting arrangement and a method of making the lighting arrangement and the optical assembly. Background technique [0002] White light emitting diodes (LEDs) are known in the art and are a relatively recent innovation. It was not practical to develop LED-based white light sources until LEDs were developed that emit light in the blue / ultraviolet region of the electromagnetic spectrum. As is known, LEDs producing white...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F21S2/00F21V5/00F21Y101/02
CPCF21V5/043F21V9/16F21Y2103/003F21Y2101/02F21V9/30F21Y2101/00F21Y2103/10F21Y2115/10F21V3/02F21V5/041F21V5/10F21V9/32F21V9/38F21V13/14F21S2/005Y10S362/80
Inventor 李依群杨海涛李亨哲C·爱德华兹
Owner INTEMATIX
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