Patent · US Active

Orientation independent focus mechanisms for laser radar

US9644720B2 · kind B2 · utility

0Cited by

2References

15Claims

0Family size

Assignee

NIKON CORPORATION · JP

Inventors

Alec Paul Robertson · Sunnyvale, US
Douglas C. Watson · Campbell, US
Alexander Cooper · Belmont, US

Key dates

Filing date	Mar 15, 2013
Grant date	May 9, 2017
Priority date	—
Expiry date	Nov 22, 2035

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY10T74/18888
WIPO fieldMeasurement
WIPO sectorInstruments

Abstract

Focus arrangements for laser radar and other applications provide compensation of orientation-dependent gravitational forces. A linear stage can be preloaded and provided with balanced linear encoders so that gravitational force induced pitch, yaw, and roll can be reduced, detected, or compensated. Alternatively, movable focus elements can be secured to actuator driven spring assemblies that are controlled to compensate orientation-dependent gravitational forces.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.