JPS6324523U - - Google Patents
Info
- Publication number
- JPS6324523U JPS6324523U JP1986117773U JP11777386U JPS6324523U JP S6324523 U JPS6324523 U JP S6324523U JP 1986117773 U JP1986117773 U JP 1986117773U JP 11777386 U JP11777386 U JP 11777386U JP S6324523 U JPS6324523 U JP S6324523U
- Authority
- JP
- Japan
- Prior art keywords
- prism
- light beam
- parallel light
- imaging lens
- passes
- 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
- 238000003384 imaging method Methods 0.000 claims description 9
- 230000003287 optical effect Effects 0.000 claims 3
- 230000004907 flux Effects 0.000 claims 2
- 230000015572 biosynthetic process Effects 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 5
Landscapes
- Color Television Image Signal Generators (AREA)
Description
第１図は本考案になるフイルタの一実施例に用
いるプリズムの平面図及びその光線の屈折状態図
、第２図はプリズムの曲面形状を示す図、第３図
は第１図示のプリズムのテレビジヨンカメラにお
ける装着位置を説明するための図、第４図は等価
プリズムにおける光線を説明するための図、第５
図乃至第７図は本考案になるフイルタの他の実施
例に用いるプリズムを説明する図、第８図は本出
願人が先に提案した低域フイルタに用いるプリズ
ムの平面図及びその光線の屈折状態図である。
２……結像レンズ、３……結像面、３１，３２
……結像点、４１，４２，１１……光線、５……
絞り、６……プリズム、６ａ，６ｂ，１２ｃ，１
２ｄ……曲面、６ｃ……底面部、６ａ′，６ｂ′
，６ｂ″……平坦面。
Fig. 1 is a plan view of a prism used in an embodiment of the filter according to the present invention and a diagram of the state of refraction of light rays, Fig. 2 is a diagram showing the curved shape of the prism, and Fig. 3 is a television set of the prism shown in Fig. 1. Figure 4 is a diagram to explain the mounting position in the camera; Figure 4 is a diagram to explain the light rays in the equivalent prism;
Figures 7 to 7 are diagrams explaining prisms used in other embodiments of the filter according to the present invention, and Figure 8 is a plan view of the prism used in the low-pass filter previously proposed by the applicant and the refraction of its light rays. FIG. 2... Imaging lens, 3... Imaging surface, 3 1 , 3 2
...Image point, 4 1 , 4 2 , 11 ... Ray, 5 ...
Aperture, 6... Prism, 6a, 6b, 12c, 1
2d...Curved surface, 6c...Bottom part, 6a', 6b'
, 6b″...Flat surface.
Claims (1)
が透過する位置に該平行光束の進入方向と直角を
なす面を曲面状になしたプリズムを設けると共に
、この平行光束が全て透過する位置に結像レンズ
を設け、かつ該平行光束の進入方向に対して該プ
リズムが該結像レンズより手前になるように配置
し、該プリズム及び結像レンズを透過した光束を
結像面に結像させて任意の空間周波数を遮断する
光学的低域波フイルタであつて、該プリズム及
び結像レンズを透過した光束を該結像面のある点
に結像させると共に、該結像レンズのみを透過し
該プリズムを透過しない光束を該結像面のある点
とは異なる点に結像させるように該プリズムを配
置してなる光学的低域波フイルタ。 (2) 該プリズムは、該平行光束の進入方向と直
角をなす面を平坦面に形成され、これを撓ませて
該平坦面を曲面状になしてテレビジヨンカメラに
装着してなる実用新案登録請求の範囲第１項記載
の光学的低域波フイルタ。[Claims for Utility Model Registration] (1) A prism having a curved surface perpendicular to the direction of incidence of the parallel light beam is provided at a position through which a portion of the parallel light beam passes through the path of entry of the parallel light beam, and , an imaging lens is provided at a position where all of this parallel light flux passes through, and the prism is placed in front of the imaging lens in the direction of entry of the parallel light flux, and the light passes through the prism and the imaging lens. An optical low-frequency filter that forms an image of the light beam on an imaging plane and blocks arbitrary spatial frequencies, and images the light beam that has passed through the prism and the imaging lens at a certain point on the image formation plane. and an optical low-frequency filter in which the prism is arranged so that the light beam that passes only through the imaging lens and does not pass through the prism is focused on a point different from a certain point on the imaging surface. (2) The prism has a flat surface that is perpendicular to the direction of incidence of the parallel light beam, and the prism is bent to make the flat surface into a curved shape and is attached to a television camera.Registration of a utility model. An optical low-pass filter according to claim 1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1986117773U JPS6324523U (en) | 1986-07-31 | 1986-07-31 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1986117773U JPS6324523U (en) | 1986-07-31 | 1986-07-31 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS6324523U true JPS6324523U (en) | 1988-02-18 |
Family
ID=31003602
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1986117773U Pending JPS6324523U (en) | 1986-07-31 | 1986-07-31 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6324523U (en) |
-
1986
- 1986-07-31 JP JP1986117773U patent/JPS6324523U/ja active Pending
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