ADJUSTMENT METHOD FOR COMPENSATION OPTICAL SYSTEM, AND COMPENSATION OPTICAL SYSTEM

• Main Author: KO KOKIN
• Format: Patent
• Language: English
• Published: 12.12.2013
• Subjects: COLORIMETRY; DEVICES OR ARRANGEMENTS, THE OPTICAL OPERATION OF WHICH ISMODIFIED BY CHANGING THE OPTICAL PROPERTIES OF THE MEDIUM OF THEDEVICES OR ARRANGEMENTS FOR THE CONTROL OF THE INTENSITY,COLOUR, PHASE, POLARISATION OR DIRECTION OF LIGHT, e.g.SWITCHING, GATING, MODULATING OR DEMODULATING; DIAGNOSIS; FREQUENCY-CHANGING; HUMAN NECESSITIES; HYGIENE; IDENTIFICATION; MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT,POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRA-RED,VISIBLE OR ULTRA-VIOLET LIGHT; MEASURING; MEDICAL OR VETERINARY SCIENCE; NON-LINEAR OPTICS; OPTICAL ANALOGUE/DIGITAL CONVERTERS; OPTICAL LOGIC ELEMENTS; OPTICS; PHYSICS; RADIATION PYROMETRY; SURGERY; TECHNIQUES OR PROCEDURES FOR THE OPERATION THEREOF; TESTING; TESTING STATIC OR DYNAMIC BALANCE OF MACHINES ORSTRUCTURES; TESTING STRUCTURES OR APPARATUS NOT OTHERWISE PROVIDED FOR

PROBLEM TO BE SOLVED: To correct a position shift between a phase distribution measured by a wavefront sensor and a phase pattern for compensation displayed on a wavefront modulation element in a short time with high precision.SOLUTION: A method includes a first step of making a wavefront modulation element 12 display a singular point generation pattern as a pattern including a singular point at a predetermined position, a second step of measuring a wavefront shape for adjustment as a wavefront shape, obtained when a light image modulated with the singular point generation pattern is made incident on the wavefront sensor 11, by a wavefront sensor 11, a third step of detecting the position of the singular point of the wavefront shape for adjustment from a measurement result of the wavefront sensor 11, and a fourth step of adjusting a position shift between the wavefront shape measured by the wavefront sensor 11 and the pattern for compensation displayed by the wavefront modulation element 12 on the basis of a position shift of the position of the singular point detected in the third step from a predetermined position.