JPS61103101A - Prism for three tube type color camera - Google Patents
Prism for three tube type color cameraInfo
- Publication number
- JPS61103101A JPS61103101A JP59225255A JP22525584A JPS61103101A JP S61103101 A JPS61103101 A JP S61103101A JP 59225255 A JP59225255 A JP 59225255A JP 22525584 A JP22525584 A JP 22525584A JP S61103101 A JPS61103101 A JP S61103101A
- Authority
- JP
- Japan
- Prior art keywords
- prism
- light
- parts
- prism body
- reflected
- 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
- 239000005337 ground glass Substances 0.000 abstract description 5
- 239000003973 paint Substances 0.000 abstract description 4
- 239000000919 ceramic Substances 0.000 abstract description 2
- 239000000843 powder Substances 0.000 abstract description 2
- 239000011248 coating agent Substances 0.000 abstract 1
- 238000000576 coating method Methods 0.000 abstract 1
- 239000002904 solvent Substances 0.000 abstract 1
- 238000004519 manufacturing process Methods 0.000 description 3
- 238000006243 chemical reaction Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000008280 blood Substances 0.000 description 1
- 210000004369 blood Anatomy 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000003814 drug Substances 0.000 description 1
- 229940079593 drug Drugs 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000009966 trimming Methods 0.000 description 1
Landscapes
- Optical Elements Other Than Lenses (AREA)
Abstract
Description
【発明の詳細な説明】
本発明は、三管式カラーカメラ用プリズｌ、に関し、さ
らに詳しくはバイアスライトを有する三管式カラーカメ
ラ用プリズムに関する。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a prism l for a three-tube color camera, and more particularly to a prism for a three-tube color camera having a bias light.
従来から、テレビ用のカラーカメラ等にはバイアスラン
プ付の三管式プリズムが使用されている。Conventionally, a three-tube prism with a bias lamp has been used in color television cameras and the like.
しかしながら、従来のこの種のプリズムは、プリズム本
体の入射光側に位置する第【プリズムの入射光面前面に
、上下にテーパー状の反射部を有する反射板を設け、又
、該反射板下部にランプを設けてバイアスランプとなし
ていた。However, in the conventional prism of this type, a reflector plate having a vertically tapered reflecting portion is provided on the front surface of the incident light surface of the prism, which is located on the incident light side of the prism body, and a reflector plate is provided at the bottom of the reflector plate. A lamp was installed to serve as a bias lamp.
従って、別体の反射板を必要とし、プリズムを製作する
に当たり２反射板製造という工程を必要とし３作業性が
恵いぼかりでなく、コストも高い七いう欠点を有してい
た。Therefore, a separate reflecting plate is required, and a process of manufacturing two reflecting plates is required to manufacture the prism, which has the disadvantages of poor workability and high cost.
又１反射板が第１プリズムと別体に設けられているため
、ランプから発せられ１反射板の反ｆｆ−１部によりプ
リズム本体内部方向に反射される光の入射効率に多少の
問題があり、プリズム内の明度を上げるというバイアス
ライトの効゛１毛が満足のいくものではなかった。Furthermore, since the first reflector is provided separately from the first prism, there is some problem in the incidence efficiency of the light emitted from the lamp and reflected toward the inside of the prism body by the anti-ff-1 portion of the first reflector. However, the effect of bias light on increasing the brightness inside the prism was not satisfactory.
本発明は、上記従来技術の欠点に迄みなされたもので、
従来のものより製造が容易で低コストで製造でき、しか
もプリズム本体内の明度の大きい三管式カラーカメラ用
プリズムを堤供することを目的とする。The present invention has been made in view of the drawbacks of the above-mentioned prior art.
The purpose of the present invention is to provide a prism for a three-tube color camera that is easier to manufacture and can be manufactured at lower cost than conventional prisms and has a large brightness inside the prism body.
即ち１本発明は、複数のプリズムを接合一体化して成る
プリズム本体と、該本体の入射光例に位置する第１プリ
ズム下部に設けらｈたランプとから成り、上記第１プリ
ズムの入射光面上下に上記ランプの光をプリズム本体内
部方向へ反射するテーパー状の光反射部を各々設けてな
るとこを特徴とする三笠式カラーカメラ用プリズムを要
旨とする。That is, one aspect of the present invention comprises a prism main body formed by bonding and integrating a plurality of prisms, and a lamp provided at the lower part of the first prism located in the direction of the incident light of the main body, The gist of the present invention is a Mikasa type color camera prism, which is characterized by having tapered light reflecting sections on the top and bottom that reflect the light from the lamp toward the inside of the prism body.
以下９本発明三笠式カラーテレビ用プリズムの実施例を
図面に基づいて詳細に説明する。Hereinafter, nine embodiments of the Mikasa color television prism of the present invention will be described in detail based on the drawings.
第１図は本発明プリズムの一実施例を示すもので図中１
は三管式カラーテレビ用プリズム（以下１単に本発明プ
リズムという）である。Figure 1 shows an embodiment of the prism of the present invention.
is a three-tube color television prism (hereinafter simply referred to as the prism of the present invention).
該プリズムｌは、基台２とプリズム本体３及びランプ４
とから構成されている。The prism l includes a base 2, a prism body 3, and a lamp 4.
It is composed of.
プリズム本体３は基台２上に設けられており。The prism body 3 is provided on the base 2.
三角柱状の第１プリズム５及び第２プリズム６と四角柱
状の第３プリズム７を接合一体化して形成されている。It is formed by joining and integrating a triangular prism-shaped first prism 5 and a second prism 6 and a quadrangular prism-shaped third prism 7.
第１プリズム５は入射光側に位置し、該プリズム５の入
射光面８の上下にはテーパー状の上部光”□１
反射部９及び下部光反射部１０が各ヤ設
けられている。The first prism 5 is located on the incident light side, and above and below the incident light surface 8 of the prism 5 there is a tapered upper light "□1".
A reflecting section 9 and a lower light reflecting section 10 are each provided.
各光反射部９及びｌＯは、第２ＰＩに示す如く。Each light reflecting section 9 and 1O is as shown in the second PI.
第１プリズム５の入射光面８の上下両辺シ、二テーパー
状の面取りを施し、血取りをしｔ：部分の所要部分をス
リガラス状に形成し、そのＬから白色便ｔ４又はセラミ
ックパウダーを？４剤にう）ｌｌＩノｉ−たｆ〕の°？
を塗布するごとにＪすｒ７事、１層１１．１２を各ヤ形
成して構成されている。Both upper and lower sides of the incident light surface 8 of the first prism 5 are chamfered in a double taper shape, blood is removed, the required portion of the t: portion is formed into a ground glass shape, and white stool t4 or ceramic powder is applied from the L of the surface. 4 drugs)
Each time it is coated, one layer of 11.12 layers is formed.
尚１本実施例では、各光反射部９．ＩＯは上記した構成
をなしているが、−に部先攻１・１部゛〕は２部１層２
なしに面取りしｔ、一部分をスリガラス状に形成するこ
とにより構成してもよい。In this embodiment, each light reflecting section 9. IO has the above-mentioned structure, but - part 1 goes first, 1st part ゛] is 2nd part 1st layer 2
It may also be constructed by forming a part of it into a ground glass shape without chamfering it.
上部反射部９及び下部反射部１０の垂線とのなす角度は
４０度〜５０度、好ましくは４５度である。The angle between the upper reflective part 9 and the lower reflective part 10 with the perpendicular is 40 degrees to 50 degrees, preferably 45 degrees.
ランプ４は基台２に設けられたランプホルタ−１３内に
収納され、ランプ４の上部には色温度ｂ：換フィルター
１４が設けられている。The lamp 4 is housed in a lamp holder 13 provided on the base 2, and a color temperature b conversion filter 14 is provided above the lamp 4.
尚、第１図中１５．１６．１７は各々第１プリズム５の
入射光面８より入射された光の出射光面で、各出射光面
＋５．１６．１７には各々トリミングフィルター１８．
１９．２０が設けられている。In FIG. 1, reference numerals 15, 16, and 17 are the output light surfaces of the light incident from the input light surface 8 of the first prism 5, and each output light surface +5, 16, and 17 is provided with a trimming filter 18.
19.20 is provided.
又、プリズム本体３の入射光面８．各出射光面１８．１
９．２０以外の部分には光が透過しないように光不透過
性の７１２１が設けられており、ランプホルダ−１３前
面にはＭ２２が設けられている。Also, the incident light surface 8 of the prism body 3. Each output light surface 18.1
A light-opaque layer 7121 is provided in the portion other than 9.20 to prevent light from passing through, and M22 is provided on the front surface of the lamp holder 13.
上記のように構成される本発明プリズムの作用に付いて
以下説明する。The operation of the prism of the present invention constructed as described above will be explained below.
第１プリズム５の入射光面８より入射された光が各プリ
ズム５．６．７により分光され各々の出射光面＋５．１
６．１７より出射する。The light incident from the incident light surface 8 of the first prism 5 is separated by each prism 5.6.7, and the light is separated by each output light surface +5.1
It will be emitted from 6.17.
この際、ランプ４の光が色温度変換フィルター１４を通
過し第３図に示す如く第１プリズム５内に入射される。At this time, the light from the lamp 4 passes through the color temperature conversion filter 14 and enters the first prism 5 as shown in FIG.
入射された光は、一部は上部先攻１・１部９に到達しこ
こで反射され、プリズム本体３内部側に散乱される。−
力、下部反射部ＩＯに到達した光はここでも下部反射部
１０により反射され、プリズム本体３内部方向に１１シ
乱される。A part of the incident light reaches the upper first striker 1/1 section 9, is reflected there, and is scattered inside the prism body 3. −
The light that has reached the lower reflecting section IO is also reflected by the lower reflecting section 10 here and is scattered toward the inside of the prism body 3.
・外先攻８１部９．１０はスリガラス状に形成されてい
るので、又塗料層１１．１２を有しているの 。・Since the outside batting first 81 part 9.10 is formed like ground glass, it also has a paint layer 11.12.
で５反射された光はプリズム本体３方向へ均一に散乱さ
れる。The light reflected by 5 is uniformly scattered in 3 directions of the prism body.
従って、プリズム本体３内部は非常に明度が大となり、
その結果得られる映像が鮮明となる。Therefore, the brightness inside the prism body 3 is extremely high.
As a result, the resulting image becomes clearer.
尚１本実施例で１本発明プリズムは上記のように構成さ
れているが１本発明の要旨を変更しない範囲でその構成
、形状等は適宜選択することが出来る。In this embodiment, the prism of the present invention is constructed as described above, but its construction, shape, etc. can be appropriately selected without changing the gist of the present invention.
以上、説明したように本発明プリズｌ、は、複数のプリ
ズムを接合一体化しで成るプリズム本体と。As described above, the prism 1 of the present invention has a prism main body formed by bonding and integrating a plurality of prisms.
該本体の入射光側に位置する第１プリズム下部に設けら
れたランプとから成り、上記第１プリズムの入射光面上
下に上記ランプの光をプリズム本体内部方向へ反射する
テーパー状の光反射部を各々設けてなるものであるから
、従来のように反射部を別体として設けたものと比較し
て容易に製造することか出来、しかも安価に製造するこ
とが出来る。a lamp provided at the bottom of a first prism located on the incident light side of the main body, and a tapered light reflecting section above and below the incident light surface of the first prism to reflect the light from the lamp toward the inside of the prism body. Since the reflecting part is provided separately, it can be manufactured more easily and at a lower cost than the conventional one in which the reflecting part is provided separately.
又、各光反射部が第１プリズムと一体に形成されている
り、 ランプからの光がプリズム本体内へ効率よく入射
され均一にｌｌｋ乱されるので、プリズム本体内部の明
度を増し、その結果、プリズムを通過して写しだされる
映像が鮮明な映像となる等種々の効果を有するものであ
る。In addition, since each light reflecting section is formed integrally with the first prism, and the light from the lamp is efficiently incident into the prism body and is uniformly disturbed, the brightness inside the prism body is increased, and as a result, It has various effects such as the image projected through the prism becomes a clear image.
図面は本発明の実施例を示すもので２第１図は本発明プ
リズムの一′Ｊ：、施例を示す斜視略図、第２図は光反
射部とランプの部分を示す要部電断面図。
第３図はランプからの光の進路の説明図である。
１・・・・・三笠式カラーカメラ用プリズム３・・ プ
リズム本体、４ ・・ランプ５・・・第１ブリズノ１，
６ ・第２プリズム７・・・第３プリズム、９・・・
上部反射部１０・・・下部反射部
第１ＵＡ
第２図 第３図The drawings show embodiments of the present invention. Fig. 1 is a schematic perspective view of a prism according to the invention, and Fig. 2 is an electrical sectional view of essential parts showing a light reflecting part and a lamp part. . FIG. 3 is an explanatory diagram of the path of light from the lamp. 1... Prism for Mikasa color camera 3... Prism body, 4... Lamp 5... 1st Brizno 1,
6 ・Second prism 7...Third prism, 9...
Upper reflecting section 10...lower reflecting section 1UA Fig. 2 Fig. 3
Claims (1)
該本体の入射光側に位置する第１プリズム下部に設けら
れたランプとから成り、上記第１プリズムの入射光面上
下に上記ランプの光をプリズム本体内部方向へ反射する
テーパー状の光反射部を各々設けてなるとこを特徴とす
る三管式カラーカメラ用プリズム。A prism body made by joining together multiple prisms,
a lamp provided at the bottom of a first prism located on the incident light side of the main body, and a tapered light reflecting section above and below the incident light surface of the first prism to reflect the light from the lamp toward the inside of the prism body. A three-tube color camera prism that is characterized by each having a.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP59225255A JPS61103101A (en) | 1984-10-26 | 1984-10-26 | Prism for three tube type color camera |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP59225255A JPS61103101A (en) | 1984-10-26 | 1984-10-26 | Prism for three tube type color camera |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS61103101A true JPS61103101A (en) | 1986-05-21 |
Family
ID=16826441
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP59225255A Pending JPS61103101A (en) | 1984-10-26 | 1984-10-26 | Prism for three tube type color camera |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS61103101A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPWO2007060835A1 (en) * | 2005-11-24 | 2009-05-07 | パナソニック株式会社 | Prism, imaging device and illumination device including the same, and prism manufacturing method |
| US7859776B2 (en) | 2005-11-18 | 2010-12-28 | Panasonic Corporation | Prism, imaging device and lighting device including the same, and prism manufacturing method |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS56117489A (en) * | 1980-02-22 | 1981-09-14 | Fuji Photo Optical Co Ltd | Color separating optical system for color television camera |
-
1984
- 1984-10-26 JP JP59225255A patent/JPS61103101A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS56117489A (en) * | 1980-02-22 | 1981-09-14 | Fuji Photo Optical Co Ltd | Color separating optical system for color television camera |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7859776B2 (en) | 2005-11-18 | 2010-12-28 | Panasonic Corporation | Prism, imaging device and lighting device including the same, and prism manufacturing method |
| JPWO2007060835A1 (en) * | 2005-11-24 | 2009-05-07 | パナソニック株式会社 | Prism, imaging device and illumination device including the same, and prism manufacturing method |
| US7589923B2 (en) | 2005-11-24 | 2009-09-15 | Panasonic Corporation | Prism, imaging device and lighting device including the same, and prism manufacturing method |
| JP4524311B2 (en) * | 2005-11-24 | 2010-08-18 | パナソニック株式会社 | Prism, imaging device and illumination device including the same, and prism manufacturing method |
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