LED signal lamp
First Claim
1. An LED signal lamp comprising:
- a housing, at least one LED excitation source operable to emit excitation radiation of a first wavelength range, at least one phosphor material for converting at least a part of the excitation radiation to radiation of a second wavelength range and a substantially transparent cover provided on the housing opening.
5 Assignments
0 Petitions
Accused Products
Abstract
An LED signal lamp (100) comprises: a housing (102), at least one LED excitation source (108) operable to emit excitation radiation of a first wavelength range (blue light), at least one phosphor material (114) for converting at least a part of the excitation radiation to radiation of a second wavelength range and a substantially transparent cover (104) provided on the housing opening. In one arrangement the excitation source (LED chip) incorporates the phosphor material. Alternatively, the phosphor can be provided remote to the excitation source such as for example on a transparent substrate which is disposed between the excitation source and transparent cover. In other arrangements, the phosphor is provided on the transparent cover or other optical components as a layer on a surface of the cover or incorporated within the cover/optical component material.
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Citations
18 Claims
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1. An LED signal lamp comprising:
- a housing, at least one LED excitation source operable to emit excitation radiation of a first wavelength range, at least one phosphor material for converting at least a part of the excitation radiation to radiation of a second wavelength range and a substantially transparent cover provided on the housing opening.
- View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18)
Specification