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
Load balancing in shortest-path-bridging networks
Processing abstract derived entities defined in a data abstraction model
Wire guide
Deposition apparatus and method for manufacturing organic light emitting diode display using the same
Variety corn line KDC7040
Methods of saccharification of polysaccharides in plants
Portable multimedia player
  Randomly Featured Patents
Optical disc device
System for controlling exhaust aftertreatment
Electrical contact units
Method for manufacturing photoelectric conversion device
Laminate structure, electronic device, and display device
System and method for cutting and splicing polymeric webs
Integrated overcurrent and overvoltage apparatus for use in the protection of telecommunication circuits
Magazine disconnect safety
Water-absorbent resin, hydropolymer, process for producing them, and uses of them
Synthesis of free racdical or visible light curable acid containing polymers