Low-profile lighting system
AssigneeQUALCOMM MEMS Technologies, Inc.
InventorsRobert L. Holman, Matthew B. Sampsell
Life of this patent
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Abstract
This disclosure provides systems, methods and apparatus for providing a desired illumination pattern within a given plane. In one aspect, a light wash system can be configured to provide substantially even illumination on a wall or floor. The light wash system can use light-shaping optics such as a stack of optical films to provide a light wash system which is smaller than conventional light wash systems which utilize parabolic reflectors. The light wash system may include an internal retroreflector to allow a wider range of throw distances for the light wash system.
Claims29
A light fixture component, comprising:
- a housing, the housing including:
- an input aperture configured to receive collimated light exiting at an oblique angle from a light guide;
- and
- an output aperture oriented at an angle to the input aperture and configured to allow light to exit the housing;
- and
- a stack of optical films disposed within the output aperture, wherein the stack of optical films are configured to operate on light exiting the housing through the output aperture to cast a desired light pattern in a plane at a given distance from the output aperture.
A method of assembling a light fixture, the method comprising:
- providing a housing having an input aperture and an output aperture oriented at an angle to the input aperture;
- providing a stack of optical films disposed within the output aperture;
- and
- positioning the housing relative to a light guide configured to emit collimated light at an oblique angle to the input aperture, such that the light enters the housing through the input aperture and passes through the stack of optical films, wherein the stack of optical films are configured to operate on light exiting the housing through the output aperture to cast a desired light pattern in a plane at a given distance from the output aperture.
A light fixture, comprising:
- a housing, the housing including:
- an input aperture configured to receive collimated light exiting at an oblique angle from a light guide;
- and
- an output aperture oriented at an angle to the input aperture and configured to allow light to exit the housing;
- and
- means for altering light passing through the output aperture to cast a desired light pattern in a plane at a given distance from the output aperture.
Dependencies are inferred from the claim text.