JPH0243069U - - Google Patents
Info
- Publication number
- JPH0243069U JPH0243069U JP1988122442U JP12244288U JPH0243069U JP H0243069 U JPH0243069 U JP H0243069U JP 1988122442 U JP1988122442 U JP 1988122442U JP 12244288 U JP12244288 U JP 12244288U JP H0243069 U JPH0243069 U JP H0243069U
- Authority
- JP
- Japan
- Prior art keywords
- pass filter
- photographic lens
- camera according
- optical low
- low
- 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 5
- 238000010586 diagram Methods 0.000 description 1
- 238000003384 imaging method Methods 0.000 description 1
Landscapes
- Transforming Light Signals Into Electric Signals (AREA)
Description
第１図は本考案に係る撮影光学系の断面図であ
る。第２図は従来の撮影光学系を示す図である。
１……撮影レンズ、２……絞り、３……近赤外
カツトフイルター、４……カラーフイルター、５
……ＣＣＤ撮像面、６……光学的ローパスフイル
ター。
FIG. 1 is a sectional view of a photographing optical system according to the present invention. FIG. 2 is a diagram showing a conventional photographing optical system. 1...Photographing lens, 2...Aperture, 3...Near infrared cut filter, 4...Color filter, 5
... CCD imaging surface, 6... Optical low-pass filter.
Claims (1)
に位相格子構造から成る光学的ローパスフイルタ
ーを配置したことを特徴とするカメラ。 (2) 前記撮影レンズの前側主平面の位置から前
記光学的ローパスフイルターの位置までの距離を
Ｇ、前記撮影レンズの焦点距離をｆとする時 ０．５＜Ｇｆ＜１．５ なる条件式を満足することを特徴とする実用新
案登録請求の範囲第１項記載のカメラ。 (3) 前記絞りは、前記ローパスフイルターと前
記撮影レンズの間に位置することを特徴とする実
用新案登録請求の範囲第１項記載のカメラ。[Claims for Utility Model Registration] (1) A camera characterized in that an optical low-pass filter consisting of a phase grating structure is arranged at a position closer to the object than a photographic lens having an aperture. (2) When the distance from the position of the front principal plane of the photographic lens to the position of the optical low-pass filter is G, and the focal length of the photographic lens is f, the conditional expression is 0.5<Gf<1.5. A camera according to claim 1, which satisfies the requirements of claim 1. (3) The camera according to claim 1, wherein the diaphragm is located between the low-pass filter and the photographing lens.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1988122442U JPH0243069U (en) | 1988-09-19 | 1988-09-19 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1988122442U JPH0243069U (en) | 1988-09-19 | 1988-09-19 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0243069U true JPH0243069U (en) | 1990-03-26 |
Family
ID=31370379
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1988122442U Pending JPH0243069U (en) | 1988-09-19 | 1988-09-19 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0243069U (en) |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS55108613A (en) * | 1979-02-14 | 1980-08-21 | Minolta Camera Co Ltd | Optical low-pass filter |
-
1988
- 1988-09-19 JP JP1988122442U patent/JPH0243069U/ja active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS55108613A (en) * | 1979-02-14 | 1980-08-21 | Minolta Camera Co Ltd | Optical low-pass filter |
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