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EP0458576A2 Expired / Lapsed EP ⏱️ 0.0 years remaining

Laser apparatus

Assignee: Sony Corp
•
Filing: 1991-05-21
•
Granted: —
•
Expires: 2011-05-21
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Abstract

Abstract A laser apparatus includes first (LR1) and second (LR2) laser rods disposed to respective sides of a centre point (0) on an optical axis (Ax), respectively, first (L1) and second (L2) concave lenses, for compensating the first and second thermal lenses, disposed at positions which are to respective sides of the centre point on the optical axis and inner sides of the first and second laser rods, respectively, first (M1) and second (M2) reflection mirrors disposed at positions which are to respective sides of the centre point on the optical axis and outer sides of the first and second laser rods, respectively, a first supporting unit (BL1) for supporting the first laser rod and the second concave lens such that the distance therebetween on the optical axis is kept to be a constant value, and a second supporting unit (BL2) for supporting the second laser rod and the first concave lens such that the distance therebetween on the optical axis is kept to be a constant value, wherein the first and second supporting units are relatively movable on the optical axis.

Inventors

  • 👤 Shigeo Kubota

Bibliographic Details

Application Number —
Jurisdiction EP
Data Source google_patents
Last Synchronized 2026-11-01 17:11
CPC Classifications
H; H01; H01S; H01S3/00; H01S3/02; H01S3/025; H01S5/00; H01S5/06; H01S3/05; H01S3/06; H01S3/07; H01S3/10; H01S3/106; H01S3/08; H01S3/08072

Claims Analysis

Total Claims: 3
Claim 1
Independent Claim 174 words
A laser apparatus comprising: a) first and second laser rods disposed at both sides of a centre point on an optical axis, respectively; b) first and second concave lenses, for compensating said first and second thermal lenses, disposed at positions which are to respective sides of the centre point on the optical axis and inner sides of said first and second laser rods, respectively; c) first and second reflection mirrors disposed at positions which are to respective sides of the centre point on the optical axis and outer sides of said first and second laser rods, respectively; d) first supporting means for supporting said first laser rod and said second concave lens such that the distance therebetween on the optical axis is kept to be a constant value; and e) second supporting means for supporting said first laser rod and said first concave lens such that the distance therebetween on the optical axis is kept to be a constant value, wherein said first and second supporting means are relatively movable on the optical axis.
Claim 2
Dependent Claim 21 words
A laser apparatus according to claim 1, further comprising rotary polarization means disposed at the centre point on the optical axis.
Claim 3
Dependent Claim 139 words
A laser apparatus according to claim 1 or 2, wherein said first supporting means supports at its one end said first laser rod and at its other end said second concave lens, said second supporting means supports at its one end said second laser rod and at its other end said first concave lens, and said first and second supporting means are relatively movable on the optical axis in a manner that an optical path passing from said first reflection mirror to the centre point on the optical axis through said first laser rod and said first concave lens and an optical path passing from said second reflection mirror to the centre point on the optical axis through said second laser rod and said second concave lens are symmetrical with respect to the centre point on the optical axis.

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