JPS646601U - - Google Patents
Info
- Publication number
- JPS646601U JPS646601U JP10050187U JP10050187U JPS646601U JP S646601 U JPS646601 U JP S646601U JP 10050187 U JP10050187 U JP 10050187U JP 10050187 U JP10050187 U JP 10050187U JP S646601 U JPS646601 U JP S646601U
- Authority
- JP
- Japan
- Prior art keywords
- lens
- optical axis
- groove
- outer peripheral
- utility
- 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
- 230000002093 peripheral effect Effects 0.000 claims description 3
- 230000003287 optical effect Effects 0.000 claims description 2
- 238000010586 diagram Methods 0.000 description 1
Landscapes
- Lens Barrels (AREA)
Description
第１図は、本考案の第１実施例を示し、第１図
ａは、プラスチツクレンズの左半分のみを示す中
央縦断面図、第１図ｂは、第１図ａのＢ―Ｂ線断
面図、第２図は、本考案の第２実施例を示し、第
２図ａは、プラスチツクレンズの左半分のみを示
す側面図、第２図ｂは、第２図ａのＣ―Ｃ断面図
、第３図は、従来技術の説明図である。
１０，２０……プラスチツクレンズ、１１，２
１……溝、１２，２２……外周面部、Ａ……光軸
。
Fig. 1 shows a first embodiment of the present invention, Fig. 1a is a central longitudinal cross-sectional view showing only the left half of the plastic lens, and Fig. 1b is a cross-sectional view taken along line BB in Fig. 1a. 2 shows a second embodiment of the present invention, FIG. 2a is a side view showing only the left half of the plastic lens, and FIG. 2b is a sectional view taken along line CC in FIG. 2a. , FIG. 3 is an explanatory diagram of the prior art. 10,20...Plastic cleanse, 11,2
1...Groove, 12, 22...Outer peripheral surface portion, A...Optical axis.
Claims (1)
を有するプラスチツクレンズにおいて、上記レン
ズの外周面部に上記レンズの光軸と平行な方向に
溝を設けて構成したことを特徴とするプラスチツ
クレンズ。 What is claimed is: 1. A plastic lens having a lens surface with a thick wall at least at a peripheral portion thereof, characterized in that a groove is provided in the outer peripheral surface of the lens in a direction parallel to the optical axis of the lens.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10050187U JPS646601U (en) | 1987-06-30 | 1987-06-30 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10050187U JPS646601U (en) | 1987-06-30 | 1987-06-30 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS646601U true JPS646601U (en) | 1989-01-13 |
Family
ID=31328630
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP10050187U Pending JPS646601U (en) | 1987-06-30 | 1987-06-30 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS646601U (en) |
-
1987
- 1987-06-30 JP JP10050187U patent/JPS646601U/ja active Pending