JPS5948529U - Fine viewfinder with erecting optics - Google Patents
Fine viewfinder with erecting opticsInfo
- Publication number
- JPS5948529U JPS5948529U JP14530782U JP14530782U JPS5948529U JP S5948529 U JPS5948529 U JP S5948529U JP 14530782 U JP14530782 U JP 14530782U JP 14530782 U JP14530782 U JP 14530782U JP S5948529 U JPS5948529 U JP S5948529U
- Authority
- JP
- Japan
- Prior art keywords
- light beam
- erecting
- lens
- image
- optical element
- 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
Landscapes
- Viewfinders (AREA)
- Cameras In General (AREA)
Abstract
(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Abstract] This bulletin contains application data before electronic filing, so abstract data is not recorded.
Description
第１図はズームレンズを用いた従来カメラのファインダ
光学系、第２図は本考案の１実施例を示す光学系で、第
３図及び第４図は正立系素子であるプリズム及びミラー
を示す。
２０１．２０２，２０３．２０４・・・・・・レンズ、
２０５・・・・・・光束分割器、２０８・・・・・・結
像レンズ、２０９・・・・・・正立系光学素子、２１０
・・・・・・接眼レンズ、２１２・・・・・・瞳位置。Fig. 1 shows the finder optical system of a conventional camera using a zoom lens, Fig. 2 shows an optical system showing one embodiment of the present invention, and Figs. 3 and 4 show a prism and mirror as erecting elements. show. 201.202, 203.204...lens,
205... Luminous flux splitter, 208... Imaging lens, 209... Erecting optical element, 210
...Eyepiece, 212...Pupil position.
Claims (2)
をもつズームレンズを撮影光学系とする光学装置におい
て、前記アフォーカル部分に軸上物体からの光束を前記
ズームレンズのアフォーカル部分までの光軸と垂直方向
に分割するような光束分割器を設け、前記光束分割器に
よって入射光束の一部を曲げてその光束中にズームレン
ズの前記アフォーカル部分以降のレンズ系を設けて撮影
系とし、前記光束分割器を前記ズームレンズのアフォー
カル部分までの光軸と同方向に通過する光束中に結像の
ための結像レンズを設け、前記結像レンズと前記結像レ
ンズの結像位置の間に正立像を作るための正立光学素子
を設け、前記正立光学素子の後方に像を拡大するだめの
接眼レンズを設けたことを特徴とする正立光学素子を持
つファインダ。(1) In an optical device that uses a zoom lens as a photographing optical system, which has a portion where a light beam from an axial object becomes almost afocal, the light beam from an axial object is transferred to the afocal portion of the zoom lens. A beam splitter is provided to split the incident light beam in a direction perpendicular to the optical axis up to the point where the light beam splits, and a part of the incident light beam is bent by the beam splitter, and a lens system after the afocal portion of the zoom lens is provided in the light beam. an imaging lens for forming an image in the light beam passing through the beam splitter in the same direction as the optical axis up to the afocal portion of the zoom lens; 1. A finder having an erecting optical element, characterized in that an erecting optical element for forming an erecting image is provided between image positions, and an eyepiece lens for enlarging the image is provided behind the erecting optical element.
とを特徴とする実用新案登録請求の範囲第１項記載の正
立光学素子を持つファインダ。(2) A finder having an erecting optical element as set forth in claim 1, which is a utility model registration, characterized in that a focusing plate is provided at the imaging position of the imaging lens.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP14530782U JPS5948529U (en) | 1982-09-25 | 1982-09-25 | Fine viewfinder with erecting optics |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP14530782U JPS5948529U (en) | 1982-09-25 | 1982-09-25 | Fine viewfinder with erecting optics |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS5948529U true JPS5948529U (en) | 1984-03-31 |
Family
ID=30323775
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP14530782U Pending JPS5948529U (en) | 1982-09-25 | 1982-09-25 | Fine viewfinder with erecting optics |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5948529U (en) |
-
1982
- 1982-09-25 JP JP14530782U patent/JPS5948529U/en active Pending
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