Inventor

CALDWELL J BRIAN

US11 patents

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

CALDWELL J BRIAN

4 patents

US8879901B2Nov 4, 2014

Optical attachment for reducing the focal length of an objective lens

CALDWELL J BRIAN24 citations91

US10126533B1Nov 13, 2018

Anamorphic optical system wity relative small squeeze ratio but with relatively pronounced residual anamorphic characteristics

CALDWELL J BRIAN15 citations82

US8169717B2May 1, 2012

Large aperture imaging optical systems

CALDWELL J BRIAN7 citations82

US7733581B2Jun 8, 2010

Large aperture imaging optical system

CALDWELL J BRIAN4 citations61

UNIV ROCHESTER

2 patents

US4902650AFeb 20, 1990

Gradient-index glass

UNIV ROCHESTER19 citations73

US4797376AJan 10, 1989

Sol-gel method for making gradient-index glass

UNIV ROCHESTER19 citations73

DONEGANI GUIDO IST

1 patent

US5206189AApr 27, 1993

Sol-gel method for the preparation of monolithic multicomponent oxide glasses

DONEGANI GUIDO IST28 citations91

CALDWELL PHOTOGRAPHIC INC

1 patent

US8903232B1Dec 2, 2014

Optical attachment for reducing the focal length of an objective lens

CALDWELL PHOTOGRAPHIC INC38 citations90

ENICHEM SPA

1 patent

US5182236AJan 26, 1993

Gradient index glasses and sol-gel method for their preparation

ENICHEM SPA38 citations88

SCHOLZ ERWIN

1 patent

US8678676B2Mar 25, 2014

Tilt shift lens adapter

SCHOLZ ERWIN11 citations73

FM ASSETS PTY LTD

1 patent

US7808718B2Oct 5, 2010

Afocal Galilean attachment lens with high pupil magnification

FM ASSETS PTY LTD6 citations69