JPH01101213U - - Google Patents
Info
- Publication number
- JPH01101213U JPH01101213U JP19601187U JP19601187U JPH01101213U JP H01101213 U JPH01101213 U JP H01101213U JP 19601187 U JP19601187 U JP 19601187U JP 19601187 U JP19601187 U JP 19601187U JP H01101213 U JPH01101213 U JP H01101213U
- Authority
- JP
- Japan
- Prior art keywords
- optical
- optical system
- elements
- optical elements
- curvature
- 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
- 230000003287 optical effect Effects 0.000 claims description 17
- 239000011521 glass Substances 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
Landscapes
- Lens Barrels (AREA)
Description
第１図及び第４図は鏡筒に組込まれた本考案に
よる光学系を示す概略構成図である。第２図及び
第３図はプレス成形によりレンズを製造する場合
の工程を示す概略断面図である。第５図は鏡筒に
組込まれた従来の光学系の一例を示す部分断面側
面図である。
２：鏡筒、４，５，６：レンズ、５ａ，６ａ：
突当て部、８：押え環、２０：ミラー。
FIGS. 1 and 4 are schematic configuration diagrams showing an optical system according to the present invention incorporated into a lens barrel. FIGS. 2 and 3 are schematic cross-sectional views showing the steps of manufacturing a lens by press molding. FIG. 5 is a partially sectional side view showing an example of a conventional optical system incorporated into a lens barrel. 2: Lens barrel, 4, 5, 6: Lens, 5a, 6a:
Abutment part, 8: Presser ring, 20: Mirror.
Claims (1)
る光学系であつて、光軸方向に隣接する光学素子
の少なくとも１組が外周部どうしを突当てられて
素子間隔が設定されており、該各組の光学素子は
突当て部が実質上同一の曲率の輪帯状であること
を特徴とする、光学系。 (2) 上記突当てられて素子間隔が設定されてい
る少なくとも１組の光学素子において一方の光学
素子の突当て部の曲率が中央部の曲率と実質上同
一である、実用新案登録請求の範囲第１項記載の
光学系。 (3) 上記突当てられて素子間隔が設定されてい
る少なくとも１組の光学素子において双方の光学
素子の突当て部が光学面である、実用新案登録請
求の範囲第１項記載の光学系。 (4) 上記光学素子がガラスからなる、実用新案
登録請求の範囲第１項記載の光学系。[Claims for Utility Model Registration] (1) An optical system that is incorporated into a lens barrel and includes a plurality of optical elements, in which at least one set of optical elements adjacent in the optical axis direction has their outer peripheries abutted against each other. 1. An optical system, wherein an element spacing is set such that the abutting portions of each set of optical elements have an annular shape with substantially the same curvature. (2) The scope of the utility model registration claim, in which the curvature of the abutting portion of one optical element is substantially the same as the curvature of the central portion in at least one set of optical elements in which the abutting elements are abutted and the element spacing is set. The optical system according to item 1. (3) The optical system according to claim 1, wherein the abutting portions of both optical elements in at least one set of optical elements abutted to set an element interval are optical surfaces. (4) The optical system according to claim 1, wherein the optical element is made of glass.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP19601187U JPH01101213U (en) | 1987-12-25 | 1987-12-25 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP19601187U JPH01101213U (en) | 1987-12-25 | 1987-12-25 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH01101213U true JPH01101213U (en) | 1989-07-07 |
Family
ID=31486654
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP19601187U Pending JPH01101213U (en) | 1987-12-25 | 1987-12-25 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH01101213U (en) |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5237945B2 (en) * | 1973-05-10 | 1977-09-26 |
-
1987
- 1987-12-25 JP JP19601187U patent/JPH01101213U/ja active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5237945B2 (en) * | 1973-05-10 | 1977-09-26 |
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