Single camera three-point vision alignment system for a device handler
AssigneeDelta Design, Inc.
InventorsKexiang Ding, Steve Ade, Larry Stuckey
Life of this patent
Estimating the term…
Abstract
A vision alignment system for aligning a testing device includes an alignment camera positioned above an alignment portion of the vision alignment system. A lighting system for emitting light onto the device is located in proximity to the alignment camera. A calibration target is used to define a calibration target coordinate system. Three actuators are positioned in a testing portion of the vision alignment system, for correcting an offset between the calibration target and the testing device. A pick and place handler transports the calibration target and the testing device between the testing portion and the alignment portion.
Claims13
A vision alignment system, comprising:
- an alignment camera positioned above an alignment portion of the vision alignment system;
- a lighting system located in proximity to the alignment camera;
- a calibration target;
- three actuators positioned in a testing portion of the vision alignment system, for correcting an offset between the calibration target and a testing device;
- and
- a handler for transporting the calibration target and the testing device between the testing portion and the alignment portion.
A method for aligning a testing device in a handler system, comprising the steps of:
- pre-aligning a calibration target with a contactor of a testing apparatus;
- recording three actuation points to define a target coordinate system;
- determining the offset between the calibration target and the testing device;
- and
- correcting the offset between the calibration target and the testing device.
A vision alignment system, comprising:
- A means for pre-aligning a calibration target with a contactor of a testing apparatus;
- a means for recording three actuation points to define a target coordinate system;
- a means for determining the offset between the calibration target and the testing device;
- and
- a means for correcting the offset between the calibration target and the testing device.
A device testing system, comprising:
- a vision alignment system, comprising:
- an alignment camera positioned above an alignment portion of the vision alignment system;
- a lighting system located in proximity to the alignment camera;
- a calibration target;
- three actuators positioned in a testing portion of the vision alignment system, for correcting an offset between the calibration target and a testing device;
- and
- a handler for transporting the calibration target and the testing device between the testing portion and the alignment portion;
- and
- a tester having a contactor for testing the operational characteristics of the testing device.
Dependencies are inferred from the claim text.