Uniformity initialization optical system for phase-change optical disk

Masaaki Takita; Yoshihiro Okino; Sumio Nakahara

doi:10.1117/12.456907

25 February 2002 Uniformity initialization optical system for phase-change optical disk

Masaaki Takita, Yoshihiro Okino, Sumio Nakahara

Proceedings Volume 4426, Second International Symposium on Laser Precision Microfabrication; (2002) https://doi.org/10.1117/12.456907
Event: Second International Symposium on Laser Precision Micromachining, 2001, Singapore, Singapore

Abstract

The Initializer which has a mechanism that allows for the rotating of the optical disk and scanning the laser head to radial direction, and Initializing the phase-change optical disk with spiral pattern, has basic problems which are caused by this mechanism. In this mechanism, the ruggedness of the laser diode is transcribed on the recording material of the optical disk. This report about the method of reflecting the laser light by the parallel millers that are installed in both sides of the light beam after collimating lens. The reflected lasers light by the parallel millers are focusing on the recording material of the optical disk with the manner of folding. If the reflected time of the lasers light is only one, it is making the 180 degreed rotated images from un-reflected image. And the multiple times reflected laser light make the image at a slightly moved place. So the folded focus image of laser diode is more uniformed compared with the original one and reduces the quality problem, which is caused by un-uniformity of initializing of Phase-Change Optical Disk.

Citation Download Citation

Masaaki Takita, Yoshihiro Okino, and Sumio Nakahara "Uniformity initialization optical system for phase-change optical disk", Proc. SPIE 4426, Second International Symposium on Laser Precision Microfabrication, (25 February 2002); https://doi.org/10.1117/12.456907

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