JPH01160430U - - Google Patents
Info
- Publication number
- JPH01160430U JPH01160430U JP5477688U JP5477688U JPH01160430U JP H01160430 U JPH01160430 U JP H01160430U JP 5477688 U JP5477688 U JP 5477688U JP 5477688 U JP5477688 U JP 5477688U JP H01160430 U JPH01160430 U JP H01160430U
- Authority
- JP
- Japan
- Prior art keywords
- optical system
- total reflection
- condenser lens
- finder optical
- reflection surface
- 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 6
- 210000001747 pupil Anatomy 0.000 claims 4
- 210000000887 face Anatomy 0.000 claims 1
- 238000003384 imaging method Methods 0.000 claims 1
Landscapes
- Viewfinders (AREA)
Description
第１図は本考案の一実施例を表すフアインダー
光学系の断面図、第２図はフアインダー内見え図
、第３，４図は本考案に用いられるコンデンサー
レンズの別の実施例を表す断面図、第５図は本考
案の別の実施例を表すフアインダー光学系の断面
図である。
１……対物レンズ、３……コンデンサーレンズ
、６……発光素子、７……全反射面。
Fig. 1 is a sectional view of a finder optical system representing one embodiment of the present invention, Fig. 2 is an internal view of the finder, and Figs. 3 and 4 are sectional views showing other embodiments of the condenser lens used in the present invention. , FIG. 5 is a sectional view of a finder optical system representing another embodiment of the present invention. 1... Objective lens, 3... Condenser lens, 6... Light emitting element, 7... Total reflection surface.
Claims (1)
レンズの結像面付近に設けられたコンデンサーレ
ンズと、発光素子とを有し、上記発光素子の光を
瞳側へ導くように上記コンデンサーレンズの物体
側の面の一端を外側へ向けて物体側へと傾斜した
全反射面とすることを特徴とするフアインダー光
学系。 ２ 前記コンデンサーレンズの全反射面と反対側
の瞳側の面で前記発光素子と対応した位置に個々
に球面を設けたことを特徴とする請求項１記載の
フアインダー光学系。 ３ 前記コンデンサーレンズの全反射面と反対側
の瞳側の面を全反射面と逆方向に外側へ向けて瞳
側へと傾斜した斜面とすることを特徴とする請求
項１記載のフアインダー光学系。[Claims for Utility Model Registration] 1. A real-image finder optical system that includes a condenser lens provided near the imaging plane of an objective lens and a light-emitting element, and that guides light from the light-emitting element toward the pupil. A finder optical system characterized in that one end of the object-side surface of the condenser lens is a total reflection surface that is tilted outward toward the object side. 2. The finder optical system according to claim 1, wherein spherical surfaces are individually provided at positions corresponding to the light emitting elements on the pupil side surface opposite to the total reflection surface of the condenser lens. 3. The finder optical system according to claim 1, wherein the surface of the condenser lens on the pupil side opposite to the total reflection surface is a slope that faces outward in a direction opposite to the total reflection surface and slopes toward the pupil side. .
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5477688U JPH01160430U (en) | 1988-04-22 | 1988-04-22 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5477688U JPH01160430U (en) | 1988-04-22 | 1988-04-22 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH01160430U true JPH01160430U (en) | 1989-11-07 |
Family
ID=31280689
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP5477688U Pending JPH01160430U (en) | 1988-04-22 | 1988-04-22 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH01160430U (en) |
-
1988
- 1988-04-22 JP JP5477688U patent/JPH01160430U/ja active Pending
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