JPH0356441B2 - - Google Patents
Info
- Publication number
- JPH0356441B2 JPH0356441B2 JP6725682A JP6725682A JPH0356441B2 JP H0356441 B2 JPH0356441 B2 JP H0356441B2 JP 6725682 A JP6725682 A JP 6725682A JP 6725682 A JP6725682 A JP 6725682A JP H0356441 B2 JPH0356441 B2 JP H0356441B2
- Authority
- JP
- Japan
- Prior art keywords
- glass plate
- mask layer
- circular glass
- radial
- transparent
- 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
- 239000011521 glass Substances 0.000 claims description 17
- 238000007740 vapor deposition Methods 0.000 claims description 16
- 230000003287 optical effect Effects 0.000 claims description 13
- 239000000463 material Substances 0.000 claims description 7
- WGLPBDUCMAPZCE-UHFFFAOYSA-N Trioxochromium Chemical compound O=[Cr](=O)=O WGLPBDUCMAPZCE-UHFFFAOYSA-N 0.000 description 9
- 229910000423 chromium oxide Inorganic materials 0.000 description 9
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 description 5
- 229910052804 chromium Inorganic materials 0.000 description 5
- 239000011651 chromium Substances 0.000 description 5
- 238000004519 manufacturing process Methods 0.000 description 4
- 230000008021 deposition Effects 0.000 description 3
- 238000002834 transmittance Methods 0.000 description 3
- 238000005530 etching Methods 0.000 description 1
- 230000000873 masking effect Effects 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
Classifications
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B26/00—Optical devices or arrangements for the control of light using movable or deformable optical elements
- G02B26/02—Optical devices or arrangements for the control of light using movable or deformable optical elements for controlling the intensity of light
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Optical Elements Other Than Lenses (AREA)
- Optical Filters (AREA)
- Optical Radar Systems And Details Thereof (AREA)
- Length Measuring Devices By Optical Means (AREA)
- Optical Transform (AREA)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6725682A JPS58184908A (ja) | 1982-04-23 | 1982-04-23 | 円板形光減衰器 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6725682A JPS58184908A (ja) | 1982-04-23 | 1982-04-23 | 円板形光減衰器 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS58184908A JPS58184908A (ja) | 1983-10-28 |
| JPH0356441B2 true JPH0356441B2 (de) | 1991-08-28 |
Family
ID=13339675
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP6725682A Granted JPS58184908A (ja) | 1982-04-23 | 1982-04-23 | 円板形光減衰器 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS58184908A (de) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS62146916U (de) * | 1986-03-12 | 1987-09-17 | ||
| JPH02113202A (ja) * | 1988-10-21 | 1990-04-25 | Nippon Shinku Kogaku Kk | 中性濃度フィルター |
| KR100618377B1 (ko) | 2005-05-23 | 2006-08-30 | 나노옵틱(주) | 광 전달을 제어하기 위한 광학 플레이트 및 이를 이용한회절형 가변 광 감쇄기 |
| WO2014115236A1 (ja) * | 2013-01-22 | 2014-07-31 | パイオニア株式会社 | 光源モジュール、投影装置、光源モジュールの制御方法、投影装置の制御方法及びプログラム、並びに記録媒体 |
| US20230126475A1 (en) * | 2020-03-31 | 2023-04-27 | Dai Nippon Printing Co., Ltd. | Reflection-type optical encoder scale and reflection-type optical encoder |
-
1982
- 1982-04-23 JP JP6725682A patent/JPS58184908A/ja active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS58184908A (ja) | 1983-10-28 |
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