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US 9,310,032 B2Granted
Edge weighted spacing of LEDs for improved uniformity range
AssigneePhoseon Technology, Inc.
InventorDoug Childers
Life of this patent
Estimating the term…
Abstract
A light source may comprise a housing, a window mounted in a front plane of the housing, a window length spanning a front plane length, and a linear array of light-emitting elements within the housing. The linear array may be aligned with and emit light through the window, and the linear array may span the window length, wherein first and last light-emitting elements of the linear array are positioned adjacent to widthwise edges of the window, and wherein window sidewalls at the widthwise edges are aligned flush with housing sidewalls.
Claims13
A light source, comprising:
- a housing;
- a window mounted in a front plane of the housing, a window length spanning a front plane-length, wherein the window comprises a front face and window sidewalls, the front face flush with the front plane, and the window sidewalls extending perpendicularly back from the front plane;
- and
- a linear array of light-emitting elements within the housing, the linear array aligned with and emitting light through the window, and the linear array spanning the window length, wherein
- first and last light-emitting elements of the linear array are positioned adjacent to widthwise edges of the window,
- the window sidewalls at the widthwise edges are aligned flush with housing sidewalls,
- the linear array of light-emitting elements further comprises a middle portion in between two end portions, the linear array having only a single row of elements,
- the middle portion comprises a plurality of light-emitting elements distributed over the middle portion with a first spacing throughout the middle portion,
- each of the end portions comprises a plurality of light-emitting elements distributed over the end portion with a second spacing throughout each end portion, the first spacing greater than the second spacing,
- a third spacing between the middle portion and each of the end portions is greater than the second spacing and less than the first spacing,
- the plurality of light-emitting elements in the middle portion have a first irradiance, and
- the plurality of light-emitting elements in each end portion have a second irradiance.
9 more elements
A method of irradiating light, comprising:
- irradiating light from a linear array of light-emitting elements, the linear array of light-emitting elements comprising a middle portion in between two end portions, the linear array having only a single row of elements, wherein:
- the middle portion comprises a plurality of light-emitting elements distributed over the middle portion with a first spacing throughout the middle portion;
- each of the end portions comprises a plurality of light-emitting elements distributed over the end portions with a second spacing throughout each end portion, the first spacing is greater than the second spacing;
- a third spacing between the middle portion and each of the end portions is greater than the second spacing and less than the first spacing;
- the plurality of light-emitting elements in the middle portion has a first irradiance;
- and
- the plurality of light-emitting elements in each end portion has a second irradiance.
4 more elements
A lighting system comprising,
- a power supply;
- a cooling subsystem;
- a light-emitting subsystem comprising,
- a housing;
- a window mounted in a front plane of the housing, a window length spanning a front plane length;
- and
- a linear array of light-emitting elements contained within the housing, the linear array aligned with and emitting light through the window, and the linear array spanning the window length, wherein:
- first and last light-emitting elements of the linear array are positioned adjacent to widthwise edges of the window,
- window sidewalls at the widthwise edges are aligned flush with housing sidewalls, the window sidewalls extending perpendicularly back from the front plane,
- the linear array of light-emitting elements comprises a middle portion in between two end portions, the linear array having only a single row of elements, wherein:
- the middle portion comprises a plurality of light-emitting elements distributed over the middle portion with a first spacing throughout the middle portion;
- and
- each of the end portions comprises a plurality of light-emitting elements distributed over the end portion with a second spacing throughout each end portion, the first spacing is greater than the second spacing;
- and
- a controller, including instructions executable to irradiate light from the light-emitting elements distributed over the middle portion having a first irradiance, and to irradiate light from the light-emitting elements distributed over the end portions having a second irradiance, wherein the first irradiance is greater than the second irradiance.
12 more elements
Dependencies are inferred from the claim text.