80-channel optical recording unit for laser plotter

Masahide Okazaki

doi:10.1117/12.142840

15 April 1993 80-channel optical recording unit for laser plotter

Masahide Okazaki

Proceedings Volume 1780, Lens and Optical Systems Design; 178019 (1993) https://doi.org/10.1117/12.142840
Event: Optical Systems Design '92, 1992, Berlin, Germany

Abstract

This paper explains a new optical recording unit with 80 semiconductor lasers ((lambda) equals 780 nm), and it can be used in the drum rotation type prepress equipment for film exposure. The optical system consists of three units: a unit composed of an off-axis paraboloid mirror and a stereographic projection lens, a both-side telocentric zoom lens unit, and an afocal reduction lens unit. A both side telocentrical optical design has been adopted for each of the units. The stereographic projection lens and the off-axis paraboloid mirror combine to keep the beam intervals regular. As a result, excellent imaging performance and telocentric characteristics at the exposure plane are now available for all magnification ranges.

Citation Download Citation

Masahide Okazaki "80-channel optical recording unit for laser plotter", Proc. SPIE 1780, Lens and Optical Systems Design, 178019 (15 April 1993); https://doi.org/10.1117/12.142840

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available