JPH0412407Y2 - - Google Patents
Info
- Publication number
- JPH0412407Y2 JPH0412407Y2 JP10221886U JP10221886U JPH0412407Y2 JP H0412407 Y2 JPH0412407 Y2 JP H0412407Y2 JP 10221886 U JP10221886 U JP 10221886U JP 10221886 U JP10221886 U JP 10221886U JP H0412407 Y2 JPH0412407 Y2 JP H0412407Y2
- Authority
- JP
- Japan
- Prior art keywords
- light
- receiving element
- projected image
- screen
- light receiving
- 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.)
- Expired
Links
- 238000003708 edge detection Methods 0.000 claims description 21
- 238000000034 method Methods 0.000 claims description 5
- 230000000694 effects Effects 0.000 description 6
- 238000005259 measurement Methods 0.000 description 6
- 238000012545 processing Methods 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 238000002474 experimental method Methods 0.000 description 3
- 230000007423 decrease Effects 0.000 description 2
- 238000005286 illumination Methods 0.000 description 2
- 230000003287 optical effect Effects 0.000 description 2
- 238000007796 conventional method Methods 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000003384 imaging method Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 239000012780 transparent material Substances 0.000 description 1
Landscapes
- Instruments For Measurement Of Length By Optical Means (AREA)
- Length Measuring Devices By Optical Means (AREA)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10221886U JPH0412407Y2 (en]) | 1986-07-03 | 1986-07-03 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10221886U JPH0412407Y2 (en]) | 1986-07-03 | 1986-07-03 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6312704U JPS6312704U (en]) | 1988-01-27 |
| JPH0412407Y2 true JPH0412407Y2 (en]) | 1992-03-25 |
Family
ID=30973667
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP10221886U Expired JPH0412407Y2 (en]) | 1986-07-03 | 1986-07-03 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0412407Y2 (en]) |
-
1986
- 1986-07-03 JP JP10221886U patent/JPH0412407Y2/ja not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6312704U (en]) | 1988-01-27 |
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