06650613 is referenced by 1 patents and cites 1 patents.

An optical scanning device for scanning a recordable optical disk (

20

) with a laser beam having a linear polarisation. A quarter wave plate (

16

) is used to alter the polarisation of the beam on reflection from the disk. A partially polarising beam splitter (

8

) is used and arranged such that a proportion of intensity of the incident beam passed is greater than a proportion of intensity of the reflected beam. A relatively high optical signal power at the disk (

20

) can be achieved for recording purposes whilst allowing the beam splitter (

8

) to be manufactured in a relatively efficient manner.

Title
Optical scanning device
Application Number
10/122465
Publication Number
6650613 (B2)
Application Date
April 15, 2002
Publication Date
November 18, 2003
Inventor
Joris Jan Vrehen
Eindhoven
US
Peter Coops
Eindhoven
US
Petrus Theodorus Jutte
Eindhoven
US
Agent
Michael E Belk
US
Assignee
Koninklijke Philips Electronics
US
IPC
G11B 7/00
View Original Source