JPS6410117A - Displacement measuring instrument - Google Patents
Displacement measuring instrumentInfo
- Publication number
- JPS6410117A JPS6410117A JP16588487A JP16588487A JPS6410117A JP S6410117 A JPS6410117 A JP S6410117A JP 16588487 A JP16588487 A JP 16588487A JP 16588487 A JP16588487 A JP 16588487A JP S6410117 A JPS6410117 A JP S6410117A
- Authority
- JP
- Japan
- Prior art keywords
- optical system
- photodetection
- optical axis
- displacement
- projection optical
- 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
Landscapes
- Length Measuring Devices By Optical Means (AREA)
- Measurement Of Optical Distance (AREA)
- Microscoopes, Condenser (AREA)
Abstract
PURPOSE:To form an image whose magnification is constant irrelevantly to displacement by arranging the image formation surface of a two-dimensional image sensor in parallel to the optical axis of a projection optical system and setting the optical axis of a photodetection optical system at right angles to the optical axis of the projection optical system. CONSTITUTION:The photodetection optical system 3 and projection optical system 2 are arranged so that their optical axes cross each other at right angles. The image formation surface of the two-dimensional image sensor 4 is set in parallel to the optical axis of the projection optical system 2 and at the position where the photodetection optical system 3 covers the displacement states (a)-(c) of an object 5 of measurement within an about 45 deg. half view angle range. The power of a cylindrical lens 21 is so adjusted that the width of a light image formed on the two-dimensional image sensor 4 is wide enough to cover a specific number of picture elements on each picture element line. Consequently, the distance from the object of measurement to the photodetection optical system is constant in each displacing operation, so the magnification of the image is constant irrelevantly to the displacement.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP16588487A JPS6410117A (en) | 1987-07-02 | 1987-07-02 | Displacement measuring instrument |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP16588487A JPS6410117A (en) | 1987-07-02 | 1987-07-02 | Displacement measuring instrument |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS6410117A true JPS6410117A (en) | 1989-01-13 |
Family
ID=15820808
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP16588487A Pending JPS6410117A (en) | 1987-07-02 | 1987-07-02 | Displacement measuring instrument |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6410117A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE4130119A1 (en) * | 1991-09-11 | 1993-03-25 | Leuze Electronic Gmbh & Co | Optical triangulation distance measurement device - light source, transmission lens, wide angle receiver lens and position sensitive light receiver |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5337457A (en) * | 1976-09-18 | 1978-04-06 | Iwatsu Electric Co Ltd | Distance measuring device |
| JPS59164910A (en) * | 1983-03-10 | 1984-09-18 | Toshiba Corp | Distance measuring apparatus |
| JPS61231409A (en) * | 1985-04-05 | 1986-10-15 | Nippon Kogaku Kk <Nikon> | Optical position measuring apparatus |
-
1987
- 1987-07-02 JP JP16588487A patent/JPS6410117A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5337457A (en) * | 1976-09-18 | 1978-04-06 | Iwatsu Electric Co Ltd | Distance measuring device |
| JPS59164910A (en) * | 1983-03-10 | 1984-09-18 | Toshiba Corp | Distance measuring apparatus |
| JPS61231409A (en) * | 1985-04-05 | 1986-10-15 | Nippon Kogaku Kk <Nikon> | Optical position measuring apparatus |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE4130119A1 (en) * | 1991-09-11 | 1993-03-25 | Leuze Electronic Gmbh & Co | Optical triangulation distance measurement device - light source, transmission lens, wide angle receiver lens and position sensitive light receiver |
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