JPH03100822U

JPH03100822U -

Info

Publication number: JPH03100822U
Application number: JP872990U
Authority: JP
Priority date: 1990-01-30
Filing date: 1990-01-30
Publication date: 1991-10-22

Description

[Brief explanation of drawings]

第１図Ａは本考案にかかる光アイソレータの平
面図、第１図Ｂは同じく正面断面図、第１図Ｃは
同じく一部省略右側面図、第１図Ｄは本考案にか
かる光アイソレータの微調整を行なう為の偏心ド
ライバを示す部分正面図、第２図は光アイソレー
タの原理を説明する為の模式的斜視図、及び第３
図は従来の光アイソレータの構造を示す断面図で
ある。１……偏光子、２……旋光器、３……検光子、
４……外筒部材、５，６……内筒部材、７……円
板部材、８……円筒磁石、９……与圧部材、１０
……キヤツプ、１１……偏心ドライバ、４１……
調整用貫通壁孔、５１，６１……調整用壁溝。 FIG. 1A is a plan view of the optical isolator according to the present invention, FIG. 1B is a front sectional view, FIG. 1C is a right side view with some parts omitted, and FIG. FIG. 2 is a partial front view showing an eccentric driver for fine adjustment, FIG. 2 is a schematic perspective view for explaining the principle of an optical isolator, and FIG.
The figure is a sectional view showing the structure of a conventional optical isolator. 1...Polarizer, 2...Optical polarizer, 3...Analyzer,
4... Outer cylinder member, 5, 6... Inner cylinder member, 7... Disc member, 8... Cylindrical magnet, 9... Pressurizing member, 10
... Cap, 11 ... Eccentric driver, 41 ...
Adjustment penetrating wall hole, 51, 61...Adjustment wall groove.

Claims

[Scope of Claim for Utility Model Registration] 1. An outer cylindrical member having a cylindrical axis that defines an optical axis and in which a through-wall hole for adjusting a predetermined inner diameter is formed; They are mounted facing each other and relatively rotatable about the optical axis, and an adjustment wall groove having a width smaller than the inner diameter of the adjustment through-wall hole is formed in at least one of the adjustment through-wall holes at a position that can be aligned with the adjustment through-wall hole. a pair of inner cylindrical members, a polarizer and an analyzer fixed to each of the inner cylindrical members and having a predetermined polarization axis along the radial direction of the cylinder; The angle of intersection between the polarization axes of the polarizer and analyzer is determined by rotating a pair of inner cylinder members from the outside through a wall groove relative to the through-wall hole as a reference. An optical isolator that can be finely adjusted to match the optical rotation angle. 2. The optical isolator according to claim 1, further comprising a pressurizing member for pressurizing the inner cylinder member and maintaining its position. 3. The optical isolator according to claim 1, wherein the adjustment wall groove is a parallel groove along the optical axis.