US 2025/0155319 A1 · SYSTEM AND METHOD FOR CALIBRATION OF OPTICAL MEASUREMENT DEVICES

Abstract

A system and a method for calibration of optical measurement devices are described. In one embodiment, the optical measurement device comprises an imaging lens, and the calibration system includes a projection light source, a lens module, and a projection element. The light emitted from the projection light source passes through the projection element and is projected by the lens module, and then captured by the imaging lens of the optical measurement device. The exit pupil of the lens module in the calibration system is coincident with the entrance pupil of the imaging lens of the optical measurement device, providing a compact and highly efficient optical calibration mechanism.

Claims10

Dependent claims

A system for calibration of an optical measurement device, the optical measurement device comprising an imaging lens, and the calibration system includes a standard projection device comprising:

a projection light source;
a lens module, an optical axis of the lens module being aligned with an optical axis of the imaging lens;
and
at least one projection element, located between the projection light source and the lens module;
wherein the light emitted from the projection light source passes through the at least one projection element and is projected by the lens module, and then captured by the imaging lens of the optical measurement device;
and wherein an exit pupil of the lens module of the standard projection device is coincident with an entrance pupil of the imaging lens of the optical measurement device.

3 more elements

A method for calibration of an optical measurement device, the optical measurement device comprising an imaging lens, and the method comprising the following steps:

(A) aligning an optical axis of a standard projection device with an optical axis of the imaging lens, and causing an exit pupil of the standard projection device to be coincident with an entrance pupil of the optical measurement device;
(B) projecting a standard image by the standard projection device, and capturing the standard image by the optical measurement device;
and
(C) performing at least one of analyzing and calibrating the captured standard image by the optical measurement device.

1 more element

Dependencies are inferred from the claim text.

System and method for calibration of optical measurement devices

Life of this patent

System and method for calibration of optical measurement devices

Life of this patent

Abstract

Claims10