P

Inventor

POWELL IAN

CA13 patents
⚠️ This page may combine multiple inventors who share the name “POWELL IAN”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.

CA NAT RESEARCH COUNCIL

4 patents
US5473474ADec 5, 1995

Panoramic lens

CA NAT RESEARCH COUNCIL186 citations98
US5629808AMay 13, 1997

D-shape laser beam projector

CA NAT RESEARCH COUNCIL33 citations92
US7317535B2Jan 8, 2008

Wavelength dispersive fourier transform spectrometer

CA NAT RESEARCH COUNCIL12 citations83
US6002483ADec 14, 1999

Non-contact interference optical system for measuring the length of a moving surface with a large N.A. collector optical system

CA NAT RESEARCH COUNCIL7 citations73

APPLE INC

2 patents
US10761321B2Sep 1, 2020

Optical arrangements including Fresnel lens elements

APPLE INC1 citations61
US11693238B2Jul 4, 2023

Optical arrangements including Fresnel lens elements

APPLE INC0 citations59

CANADIAN PATENTS DEV

1 patent
US4826299AMay 2, 1989

Linear deiverging lens

CANADIAN PATENTS DEV237 citations98

NAT RESEARCH COUNCIL OF CANDA

1 patent
US5631778AMay 20, 1997

Panoramic fish-eye imaging system

NAT RESEARCH COUNCIL OF CANDA66 citations93

GEN SIGNAL CORP

1 patent
US5161062ANov 3, 1992

Optical projection system including a refractive lens assembly having a gap between constituent lenses

GEN SIGNAL CORP29 citations92

JDS UNIPHASE INC

1 patent
US7039267B2May 2, 2006

Optical switch

JDS UNIPHASE INC23 citations91

KAHN DAVID ALEXANDER

1 patent
US8491120B2Jul 23, 2013

Retinal fundus surveillance method and apparatus

KAHN DAVID ALEXANDER19 citations87

ANNIDIS HEALTH SYSTEMS CORP

1 patent
US8807751B2Aug 19, 2014

Retinal fundus surveillance method and apparatus

ANNIDIS HEALTH SYSTEMS CORP20 citations86

REMRAF PTY LTD

1 patent
US5499066AMar 12, 1996

Optical instrument with a continuously adjustable zoom

REMRAF PTY LTD15 citations60