Resources Contact Us Home
Browse by: INVENTOR PATENT HOLDER PATENT NUMBER DATE
 
 
Mastering apparatus for recording onto a glass master and method for recording onto a glass master










Image Number 4 for United States Patent #6103177.

A mastering apparatus for recording optical information onto a glass master 6, includes an objective lens 3, a slider 5 for controlling the movement of the objective lens 3 in the tracking direction, a turn table 7 for rotating the glass master 6, a spindle motor 8 for controlling the rotation of the turn table 7, a positioning beam generator 9, a positioning beam detector 10 for detecting a positioning beam reflected and/or diffracted by positioning units 16 and 17 and a slider controller 11 for moving the slider 5 based on the result of reception of a beam at the positioning beam detector 10. The positioning unit 16 is mounted on the vicinity of the objective lens 3, and the positioning unit 17 is mounted on the upper surface of a spindle stationary portion 13. Since the position of the positioning unit 17 is always stable, relative positional deviation between the positioning units 16 and 17 can be accurately detected by detecting the beam diffracted by the positioning units 16 and 17.








 
 
  Recently Added Patents
Sealed, waterproof digital electronic camera system and method of fabricating same
Advertising system and method
Cell transport system comprising a homogeneous mixture of agarose and agarase
System and method for storing redundant information
Integrated transmit/receive switch
Semiconductor device manufacturing method and device for same
Systems, methods and apparatus for payment processing
  Randomly Featured Patents
High speed frequency response measurement
Method and apparatus for red-eye detection in an acquired digital image based on image quality pre and post filtering
Method and apparatus for preventing unauthorized usage of a computer system
Multifrequency, single pass free electron laser
Electrical connector with contacts firmly retained in housing
Mechanical transmission for drive wheels, especially for mobile work machines
Fastenable binder with insert
Device for unstacking postal items with optimized management of unstacking conditions
Sectored array antenna CDMA system for improved softer handoff
Misregister amount detection method and apparatus