Optical device comprising a holder accommodating an optical syst

Details Optical device comprising a holder accommodating an optical syst Optical device comprising a holder accommodating an optical syst

1989-01-31

1989-08-08

Sikes, William L.

Dynamic information storage or retrieval

Specific detail of information handling portion of system

Radiation beam modification of or by storage medium

369 45, 250216, 250570, 250201, 350533, 350253, G11B 700, G01J 120, G02B 702

Patent

active

048559873

ABSTRACT:
An optical system is described, for example a radiation source unit (10) supplying a collimated radiation beam (RB), comprising a tubular holder (30) a radiation source (33) arranged in the holder and an optical system having a collimator lens (37). The displacement of the focus of the optical system caused by the variation in length of the holder occurring at a varying temperature can be compensated by a suitable choice of notably the geometry (R.sub.1, D.sub.1) and the refractive index (n.sub.1) of the collimator lens.

REFERENCES:
patent: 4162120 (1979-07-01), Moreno
patent: 4533826 (1985-08-01), van Alem
patent: 4546463 (1985-10-01), Opheij et al.
patent: 4592627 (1986-06-01), Smid
patent: 4609945 (1986-09-01), Oguino
patent: 4641023 (1987-02-01), Ando et al.
patent: 4720168 (1988-01-01), Kaneko
patent: 4721373 (1988-01-01), Sugiyama
patent: 4753524 (1988-06-01), Sugiyama
patent: 4796252 (1989-01-01), Maan

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