JPS5485735A - Objective lens positioning method - Google Patents
Objective lens positioning methodInfo
- Publication number
- JPS5485735A JPS5485735A JP15297877A JP15297877A JPS5485735A JP S5485735 A JPS5485735 A JP S5485735A JP 15297877 A JP15297877 A JP 15297877A JP 15297877 A JP15297877 A JP 15297877A JP S5485735 A JPS5485735 A JP S5485735A
- Authority
- JP
- Japan
- Prior art keywords
- positions
- rotator
- objective lenses
- lenses
- disc
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Abstract
PURPOSE: To readily and accurately perform alignment adjustment of a plurality of objective lenses provided to a rotator by aligning the respecive optical axes of a plurality of objective lenses to the positions formed by using a reference member formed with the positions corresponding to the specified positions in a rotary scanner.
CONSTITUTION: A plurality of objective lenses 2 are held movably and adjustably respectively in the diametral direction of a rotator 1. A reference disc 3, for which a trasparent glass plate is used, is constituted by providing a slit 4 in annular track form on one of its surfaces by leaving a distance up to the desired adjustment positions of the objective lenses 2 from the rotating center. The rotator 1 holding the plural objective lenses 2 is mounted to the portion where the other end part of a wheel 6 is formed in taper form, and the spacing between the rotator 1 and reference disc 3 is so arranged that the focus of the lens 2 positions on the top of the disc 3. Then, by moving and adjusting the lenses 2 in the diametral direction of the rotator 1 based on the output of a photo detector 14 and aligning their optical axes to the center of the slit, the lenses 2 may be set in the desired positions.
COPYRIGHT: (C)1979,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP15297877A JPS5485735A (en) | 1977-12-21 | 1977-12-21 | Objective lens positioning method |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP15297877A JPS5485735A (en) | 1977-12-21 | 1977-12-21 | Objective lens positioning method |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS5485735A true JPS5485735A (en) | 1979-07-07 |
Family
ID=15552280
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP15297877A Pending JPS5485735A (en) | 1977-12-21 | 1977-12-21 | Objective lens positioning method |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5485735A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US8640426B2 (en) | 2008-10-06 | 2014-02-04 | Otis Elevator Company | Thermal barriers of elevator door roller and rail |
-
1977
- 1977-12-21 JP JP15297877A patent/JPS5485735A/en active Pending
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US8640426B2 (en) | 2008-10-06 | 2014-02-04 | Otis Elevator Company | Thermal barriers of elevator door roller and rail |
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