Inventor
HOWDEN HARRY
8 patents
Patents
8 patentsUS4615847AOct 7, 1986
Method and apparatus for producing a lens having an accurately centered aspherical surface
PHILIPS CORP25 citations80
US4484798ANov 27, 1984
Method of manufacturing a multiple mirror reflector for a land based telescope
PHILIPS CORP26 citations80
US4319945AMar 16, 1982
Method of producing aspherical optical elements
PHILIPS CORP23 citations80
US3980399ASep 14, 1976
Aspheric optical elements
PHILIPS CORP18 citations80
US4367014AJan 4, 1983
Polygonal rotary scanners
PHILIPS CORP14 citations72
US4073574AFeb 14, 1978
Optical projector
PHILIPS CORP15 citations69
US4665336AMay 12, 1987
Means for cooling the faceplate of a cathode ray tube in a television projection system
PHILIPS CORP5 citations61
US4327606AMay 4, 1982
Method of making a master replicating tool
PHILIPS CORP4 citations61