Focus-error Detection from Far-field Image Flow

H. Ishibashi; S. Tanaka; M. Moriya

doi:10.1364/ODS.1991.WB2

Optical Data Storage Topical Meeting
Technical Digest Series (Optica Publishing Group, 1991),
paper WB2
•https://doi.org/10.1364/ODS.1991.WB2

Focus-error Detection from Far-field Image Flow

H. Ishibashi, S. Tanaka, and M. Moriya

Optical Data Storage 1991

Colorado Springs, Colorado United States
25–27 February 1991
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Servo Signals (WB)

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H. Ishibashi, S. Tanaka, and M. Moriya, "Focus-error Detection from Far-field Image Flow," in Optical Data Storage Topical Meeting, Technical Digest Series (Optica Publishing Group, 1991), paper WB2.

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Abstract

It becomes more necessary to produce optical heads in small size, in low weight and in low cost. For that purpose, we think that the optical heads would rather be simplified than be integrated. Furthermore, the optical heads should be manufactured without accurate adjustment if possible.

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