P

Inventor

KOYANAGI HIDEAKI

JP4 patents
⚠️ This page may combine multiple inventors who share the name “KOYANAGI HIDEAKI”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.

HOYA CORP

3 patents
US5166830ANov 24, 1992

Aspherical lens system for a bar code sensor

HOYA CORP52 citations89
US7345829B2Mar 18, 2008

Objective lens

HOYA CORP14 citations81
US7212485B2May 1, 2007

Objective lens and method for manufacture thereof

HOYA CORP4 citations60

HITACHI LTD

1 patent
US5889748AMar 30, 1999

Object lens and optical head for reproducing data from optical disks in different thickness of substrate

HITACHI LTD81 citations95