Patent · US Expired

Simultaneous laser writing of multiple LALC cells

US4992803A · kind A · utility

1Cited by
6References
18Claims
0Family size

Assignee

Inventors

Key dates

Filing dateDec 21, 1988
Grant dateFeb 12, 1991
Priority date—
Expiry dateDec 21, 2008

Classification

  • Technology area (CPC Y)Emerging Cross-Sectional Technologies
  • CPC primaryY10S359/90
  • WIPO fieldMeasurement
  • WIPO sectorInstruments

Abstract

Multiple images may be written simultaneously onto at least one photosensitive surface by modulating first and second laser beams in accordance with image information corresponding to first and second images. The first beam is directed onto a scanning mirror at a first angle of incidence A.sub.1, and the second beam is directed onto the same scanning mirror at a second angle of incidence A.sub.2. The first beam is focussed from the scanning mirror onto the photosensitive surface to write the first image thereon. The second beam is focussed from the scanning mirror onto the liquid crystal surface to write the second image thereon spatially remote from the first image.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.