JPH049023U - - Google Patents
Info
- Publication number
- JPH049023U JPH049023U JP4684190U JP4684190U JPH049023U JP H049023 U JPH049023 U JP H049023U JP 4684190 U JP4684190 U JP 4684190U JP 4684190 U JP4684190 U JP 4684190U JP H049023 U JPH049023 U JP H049023U
- Authority
- JP
- Japan
- Prior art keywords
- light
- projection
- objective lens
- transmission mirror
- lens system
- 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
- 230000003595 spectral effect Effects 0.000 claims description 7
- 230000005540 biological transmission Effects 0.000 claims description 5
- 230000003287 optical effect Effects 0.000 claims description 5
- 230000004907 flux Effects 0.000 claims description 2
- 238000009434 installation Methods 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 3
Landscapes
- Focusing (AREA)
- Viewfinders (AREA)
Description
第１図は、この考案の一実施例による投光光学
系を備えたフアインダ装置の概略構成図、第２図
は、投光素子の位置関係を説明するための線図、
第３図は、分光透過ミラーの分光反射率の特性図
、第４図ａ，ｂは、それぞれワイド状態とテレ状
態におけるフアインダ像を示す。
１……実像式フアインダ、２……対物レンズ系
、３……ポロプリズム、４……接眼レンズ、５…
…フアインダ入射光軸、６……分光透過ミラー、
７……投光光束の光軸、８……補助レンズ、９…
…投光素子。
FIG. 1 is a schematic configuration diagram of a finder device equipped with a light projection optical system according to an embodiment of the invention, and FIG. 2 is a diagram for explaining the positional relationship of light projection elements.
FIG. 3 is a characteristic diagram of the spectral reflectance of the spectral transmission mirror, and FIGS. 4a and 4b show viewfinder images in the wide and telephoto states, respectively. 1...Real image type finder, 2...Objective lens system, 3...Porro prism, 4...Eyepiece lens, 5...
...Finder incident optical axis, 6...Spectral transmission mirror,
7...Optical axis of projected light flux, 8...Auxiliary lens, 9...
...Light emitter.
Claims (1)
出射する投光素子を有する投光手段と、上記投光
手段から投光する特定光の光束は反射し、上記対
物レンズ系から入射する可視領域の光は透過する
分光反射率を有する分光透過ミラーとを備え、上
記投光手段の投光素子からの投光光束を上記分光
透過ミラーによつて反射し、上記フアインダの対
物レンズ系を通して被写体へ投光するように構成
したことを特徴とする投光光学系を備えたフアイ
ンダ装置。 (2) 上記分光透過ミラーの設置角度を可動式に
して、上記対物レンズ系を通して投光される投光
光束の向きを変更可能に構成したことを特徴とす
る請求項１記載の投光光学系を備えたフアインダ
装置。[Claims for Utility Model Registration] (1) A light projecting means having a real image type viewfinder and a light projecting element that emits specific light such as infrared light, and the luminous flux of the specific light emitted from the light projecting means is reflected. and a spectral transmission mirror having a spectral reflectance that transmits light in the visible range that enters from the objective lens system, and reflects the projected light beam from the light projection element of the light projection means by the spectral transmission mirror. A finder device equipped with a light projection optical system, characterized in that the light is projected onto a subject through the objective lens system of the finder. (2) The projection optical system according to claim 1, wherein the installation angle of the spectral transmission mirror is movable so that the direction of the projection light beam projected through the objective lens system can be changed. A fine finder device with
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4684190U JPH049023U (en) | 1990-05-07 | 1990-05-07 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4684190U JPH049023U (en) | 1990-05-07 | 1990-05-07 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH049023U true JPH049023U (en) | 1992-01-27 |
Family
ID=31562260
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP4684190U Pending JPH049023U (en) | 1990-05-07 | 1990-05-07 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH049023U (en) |
-
1990
- 1990-05-07 JP JP4684190U patent/JPH049023U/ja active Pending
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