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
Data processing apparatus, activation control method, and computer-readable storage medium
Techniques for forming a contact to a buried diffusion layer in a semiconductor memory device
Position-measuring device
Direct mode adapter based shortcut for FCoE data transfer
Data processing system, data processing method, and image forming apparatus
Compositions substantially free of sodium chloride and methods for the storage of red blood cells
Methods and arrangements for realising betting with off-line terminal
  Randomly Featured Patents
Portable traveller headrest
Modularized structure framing system and module installation tools for use therewith
Process of N-demethylating (-)-1-(p-methoxybenzyl)-2-methyl-1,2,3,4,5,6,7,8-octahydroisoquinoline
Wooden coffee tumbler
Triazole compounds suitable for treating disorders that respond to modulation of the dopamine D3 receptor
Optical adaptor mounting metal fittings and an optical adaptor
Supporting structure for Christmas light decoration
Electrosurgical instrument
Natural gas liquefaction system
Automotive air conditioning system