JPH0643687Y2 - 光方向検出装置 - Google Patents
光方向検出装置Info
- Publication number
- JPH0643687Y2 JPH0643687Y2 JP1987025364U JP2536487U JPH0643687Y2 JP H0643687 Y2 JPH0643687 Y2 JP H0643687Y2 JP 1987025364 U JP1987025364 U JP 1987025364U JP 2536487 U JP2536487 U JP 2536487U JP H0643687 Y2 JPH0643687 Y2 JP H0643687Y2
- Authority
- JP
- Japan
- Prior art keywords
- light
- optical paths
- filter
- neutral density
- density filter
- 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 - Lifetime
Links
- 230000003287 optical effect Effects 0.000 claims description 18
- 230000007935 neutral effect Effects 0.000 claims description 8
- 230000000903 blocking effect Effects 0.000 claims 1
- 238000001514 detection method Methods 0.000 description 10
- 238000010586 diagram Methods 0.000 description 6
- 230000005855 radiation Effects 0.000 description 6
- 239000005357 flat glass Substances 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 239000012778 molding material Substances 0.000 description 2
- 239000011347 resin Substances 0.000 description 2
- 229920005989 resin Polymers 0.000 description 2
- 238000004378 air conditioning Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000002542 deteriorative effect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000013307 optical fiber Substances 0.000 description 1
- 238000005192 partition Methods 0.000 description 1
- 230000008646 thermal stress Effects 0.000 description 1
Landscapes
- Photometry And Measurement Of Optical Pulse Characteristics (AREA)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1987025364U JPH0643687Y2 (ja) | 1987-02-23 | 1987-02-23 | 光方向検出装置 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1987025364U JPH0643687Y2 (ja) | 1987-02-23 | 1987-02-23 | 光方向検出装置 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS63132310U JPS63132310U (en]) | 1988-08-30 |
| JPH0643687Y2 true JPH0643687Y2 (ja) | 1994-11-14 |
Family
ID=30825451
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1987025364U Expired - Lifetime JPH0643687Y2 (ja) | 1987-02-23 | 1987-02-23 | 光方向検出装置 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0643687Y2 (en]) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2004074866A1 (ja) * | 2003-02-19 | 2004-09-02 | Hitachi, Ltd. | 物体監視センサ |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6323607U (en]) * | 1986-07-30 | 1988-02-16 |
-
1987
- 1987-02-23 JP JP1987025364U patent/JPH0643687Y2/ja not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPS63132310U (en]) | 1988-08-30 |
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