Multi-beam optical system using lenslet arrays in laser multi-beam printers and recorders
US5619245A · kind A · utility
125Cited by
11References
11Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jul 29, 1994 |
| Grant date | Apr 8, 1997 |
| Priority date | — |
| Expiry date | Jul 29, 2014 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01S5/4025
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A multi-beam laser printer for printing on light-sensitive thermal media where a monolithic array of independently modulated diode lasers is used to reduce the size of the printer. A closely spaced array of printing spots is produced from the separate diode lasers using two lenslet arrays having power in the array direction. To correct for non-straightness of the laser array, an optical arrangement is used to conjugate the far field of the lasers in a direction perpendicular to the array direction of the printing plane so that the laser array produces a straight line of printing spots on the light-sensitive medium.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.