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US 12,578,085 B2Granted
Infrared light module uniformity rotational test module
AssigneeWaymo LLC
InventorsChoon Ping Chng, Cheng-Han Wu, Lucian Ion, Giulia Guidi
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Abstract
Example embodiments described herein involve a system for testing a light-emitting module. The light-emitting module may include a mounting platform configured to hold a light-emitting module for a camera. The mounting platform may also be configured to rotate. The system may further include a housing holding a plurality of photodiodes arranged in an array over at least a 90 degree arc of a hemisphere. The system may also include a controller configured to control the photodiodes and the rotation of the mounting platform.
Claims20
A method comprising:
- emitting light from a light-emitting module while rotating the light-emitting module around an axis in predetermined angle increments, wherein the light-emitting module is in a housing configured to block external light;
- sensing, with a plurality of photodiodes in the housing, a plurality of directional light intensities of the light emitted from the light-emitting module;
- and
- determining an ability to illuminate a predetermined distribution area based on the plurality of directional light intensities sensed by the photodiodes.
1 more element
A method comprising:
- emitting light from a control light source while rotating the control light source around an axis, wherein the control light source is in a housing configured to block external light;
- sensing, with a plurality of photodiodes in the housing, a plurality of directional light intensities of the light emitted from the control light source;
- and
- determining whether any of the plurality of directional light intensities sensed with the plurality of photodiodes is associated with an error based on a predetermined light intensity of the control light source.
1 more element
Dependencies are inferred from the claim text.