P

Inventor

SPANNER ERWIN

DE18 patents
⚠️ This page may combine multiple inventors who share the name “SPANNER ERWIN”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.

HEIDENHAIN GMBH DR JOHANNES

17 patents
US6369951B1Apr 9, 2002

Beam splitter assembly and interferometer having a beam splitter assembly

HEIDENHAIN GMBH DR JOHANNES30 citations92
US5977539ANov 2, 1999

Optical position-measuring device having reference mark graduation structures with chirp fields

HEIDENHAIN GMBH DR JOHANNES44 citations92
US5786931AJul 28, 1998

Phase grating and method of producing phase grating

HEIDENHAIN GMBH DR JOHANNES32 citations92
US5574560ANov 12, 1996

Dual-beam interferometer with a phase grating

HEIDENHAIN GMBH DR JOHANNES34 citations92
US5333048AJul 26, 1994

Polarizing interferometric displacement measuring arrangement

HEIDENHAIN GMBH DR JOHANNES39 citations92
US5079418AJan 7, 1992

Position measuring apparatus with reflection

HEIDENHAIN GMBH DR JOHANNES24 citations92
US6535290B1Mar 18, 2003

Optical position measuring device with a beam splitter

HEIDENHAIN GMBH DR JOHANNES25 citations91
US5711084AJan 27, 1998

Linear encoder

HEIDENHAIN GMBH DR JOHANNES29 citations91
US6907372B1Jun 14, 2005

Device for position indication and detection of guidance errors

HEIDENHAIN GMBH DR JOHANNES13 citations84
US7542149B2Jun 2, 2009

Optics system for an interferometer that uses a measuring mirror, a reference mirror and a beam deflector

HEIDENHAIN GMBH DR JOHANNES8 citations82
US5206704AApr 27, 1993

Position measuring apparatus and method of use thereof

HEIDENHAIN GMBH DR JOHANNES16 citations74
US5500734AMar 19, 1996

Photoelectric position measuring system with integral optical circuit having phase shifted interference gratings

HEIDENHAIN GMBH DR JOHANNES14 citations73
US6265992B1Jul 24, 2001

Position measuring system and method for operating a position measuring system

HEIDENHAIN GMBH DR JOHANNES12 citations71
US6097318AAug 1, 2000

Position measuring system and method for operating a position measuring system

HEIDENHAIN GMBH DR JOHANNES14 citations71
US7701593B2Apr 20, 2010

Optical position measuring arrangement

HEIDENHAIN GMBH DR JOHANNES4 citations63
US7639366B2Dec 29, 2009

Position-measuring device for determining the position of two objects movable with respect to each other along a measuring direction, and method for forming a reference pulse for such a position-measuring device

HEIDENHAIN GMBH DR JOHANNES3 citations62
US9188424B2Nov 17, 2015

Interferometer

HEIDENHAIN GMBH DR JOHANNES2 citations61

DR JOHANNES HEIDENHAN GMBH

1 patent