JP2749853B2 - Front projection photography equipment - Google Patents
Front projection photography equipmentInfo
- Publication number
- JP2749853B2 JP2749853B2 JP1008329A JP832989A JP2749853B2 JP 2749853 B2 JP2749853 B2 JP 2749853B2 JP 1008329 A JP1008329 A JP 1008329A JP 832989 A JP832989 A JP 832989A JP 2749853 B2 JP2749853 B2 JP 2749853B2
- Authority
- JP
- Japan
- Prior art keywords
- light
- screen
- subject
- projection
- polarizing plate
- 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.)
- Expired - Fee Related
Links
Landscapes
- Overhead Projectors And Projection Screens (AREA)
- Projection-Type Copiers In General (AREA)
Description
【発明の詳細な説明】 〔産業上の利用分野〕 この発明は、スクリーンの前方に配置させた被写体
を、前方から上記スクリーンに投映した背景画面と共に
撮影するフロントプロジエクシヨン撮影装置に関する。Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a front projection photographing apparatus for photographing a subject arranged in front of a screen together with a background screen projected on the screen from the front.
第２図はこのようなフロントプロジエクシヨン撮影装
置の原理を示す光路図である。FIG. 2 is an optical path diagram showing the principle of such a front projection photographing apparatus.
撮影装置１の撮影レンズ11の前方には光軸l0上に45度
の角度で斜在するハーフミラー２が配設され、この光軸
l0に直交して背景画面投映用のスクリーン３が設けられ
ている。A half mirror 2 to obliquely standing at an angle of 45 degrees on the optical axis l 0 is disposed in front of the taking lens 11 imaging apparatus 1, the optical axis
the screen 3 for Film background screen projection is provided orthogonal to the l 0.
一方、ハーフミラー２が光軸l0と交わる点Ｃを通つて
光軸l0に直交する線上に光軸l1を有する投映装置４が配
設され、その光源41から発する光線は集光レンズ42によ
り背景画面を写し込んだスライドフイルム面43に集光
し、投映レンズ44を通つてハーフミラー２により90度向
きを変えて反射した光軸が上記光軸l0と一致してスクリ
ーン３に達している。On the other hand, projection apparatus 4 having an optical axis l 1 is disposed on a line perpendicular to point C the half mirror 2 intersects the optical axis l 0 in passing connexion optical axis l 0, rays originating from the light source 41 is a condenser lens 42 the condensed on the slide film surface 43 which imprinted the background screen, the optical axis reflected by changing the 90-degree direction by passing connexion half mirror 2 projection lens 44 to the screen 3 coincides with the optical axis l 0 Has reached.
そして、点Ｃから撮影レンズ11の入射瞳面11aまでの
距離と、投映レンズ44の射出瞳面44bまでの距離が等し
くなるようにそれぞれの位置が定められている。The respective positions are determined so that the distance from the point C to the entrance pupil plane 11a of the photographing lens 11 is equal to the distance from the point C to the exit pupil plane 44b of the projection lens 44.
なお、図中11bは撮影レンズ11の射出瞳面を、44aは投
映レンズ44の入射瞳面を、12は撮影装置１のフイルム面
をそれぞれ示しており、撮影に際しては人物等の被写体
５をスクリーン３の前方に配位させ、この被写体５を被
写体照明用の光源6a,6bによつて照明している。In the figure, reference numeral 11b denotes an exit pupil plane of the photographing lens 11, 44a denotes an entrance pupil plane of the projection lens 44, and 12 denotes a film surface of the photographing apparatus 1. When photographing, the subject 5 such as a person is screened. The object 5 is illuminated by light sources 6a and 6b for illuminating the object.
ここで、スクリーン３は、第３図にその一部を拡大し
て示すように、柔軟な基板31の一面に光吸収層32を形成
し、その表面に直径50μｍ程度の透明な微小球33を単層
に隙間なく敷設したものである。The screen 3 has a light absorbing layer 32 formed on one surface of a flexible substrate 31 and a transparent microsphere 33 having a diameter of about 50 μm formed on one surface of the flexible substrate 31, as shown in a partially enlarged view in FIG. It is laid in a single layer without gaps.
いま、この微小球33に入射光I1,I2が入射した場合を
考えると、その大部分は微小球33を透過して透過光t1,t
2となつて光吸収層32に吸収され、10％程度がその表面
で鏡面反射して散乱光r1,r2となり、全入射光量の数％
程度が回帰性を有する反射光R1,R2として入射光方向へ
反射される。Now, considering the case where the incident lights I 1 and I 2 are incident on the microsphere 33, most of the transmitted light t 1 and t
As a result, the light is absorbed by the light absorbing layer 32 and about 10% is specularly reflected on its surface to become scattered lights r 1 and r 2 , which are several percent of the total incident light amount.
The light is reflected in the incident light direction as reflected light R 1 and R 2 having a degree of regression.
しかし、この僅かな反射光R1,R2の指向角が１゜未満
という強い指向性を有し、且つ投映レンズ44の射出瞳面
44bの位置と撮影レンズ11の入射瞳面11aの位置がハーフ
ミラー２に関して等価な位置にあるので、投影装置４に
よつてスクリーン３上に投映された背景画面の反射光が
撮影レンズ11に入射する輝度値は、投映レンズ44の射出
瞳の有限開口径の影響を考慮しても、通常のマツトスク
リーンの輝度の1,000倍のオーダになる。However, the reflected light R 1 , R 2 has a strong directivity of less than 1 ° in the directional angle, and the exit pupil plane of the projection lens 44.
Since the position of 44b and the position of the entrance pupil plane 11a of the photographing lens 11 are equivalent to the half mirror 2, the reflected light of the background screen projected on the screen 3 by the projection device 4 enters the photographing lens 11. The luminance value to be obtained is on the order of 1,000 times the luminance of a normal mat screen even when the influence of the finite aperture diameter of the exit pupil of the projection lens 44 is considered.
一方、被写体５に投映された背景画面は散乱反射して
撮影レンズ11に達する反射光は無視し得る程度に弱くな
るので、撮影されたフイルム面には全く現れず、光源6
a,6bによつて照明された被写体５をスクリーン３上の背
景画面と共に撮影することができる。On the other hand, the background image projected on the subject 5 is scattered and reflected, and the reflected light reaching the photographing lens 11 is weakened to a negligible level.
The subject 5 illuminated by a and 6b can be photographed together with the background screen on the screen 3.
しかしながら、このような従来のフロントプロジエク
シヨン撮影装置にあつては、被写体５を照明する光源6
a,6bからの光線がスクリーン３に直接当ると、スクリー
ン３の微小球33の表面で反射した散乱光r1,r2,……（第
３図）が投影レンズ11に入射し、背景画面のコントラス
トを低下させて画面が白つぽくなるという問題があつ
た。However, in such a conventional front projection photographing apparatus, a light source 6 for illuminating the subject 5 is used.
a, the light rays from 6b strikes directly on the screen 3, the scattered light r 1 reflected by the surface of the microspheres 33 of the screen 3, r 2, ...... (FIG. 3) is incident on the projection lens 11, a background image There is a problem that the contrast is lowered and the screen becomes white.
また、これらの光源6a,6bからの光線が被写体５に遮
られてスクリーン３に当らなかつた部分3a,3b（第２
図）では上記のような散乱光r1,r2,……が生じないの
で、画面が白つぽくなる現象はなく、撮影したフイルム
面上には背景画面に被写体５の影が生じるという点にも
問題があつた。In addition, the light rays from these light sources 6a and 6b are blocked by the subject 5 and do not hit the screen 3 (parts 3a and 3b (second
In the figure, since the scattered light r 1 , r 2 ,... Described above does not occur, the screen does not appear white and the shadow of the subject 5 appears on the background screen on the photographed film surface. Had a problem.
このような問題点を解決するため、従来のフロントプ
ロジエクシヨン撮影装置においては、被写体５をスクリ
ーン３から所定距離以上離して配位すると共に、光源6
a,6bに遮光板を取付けたり光源をスポツトライトにした
りし、且つ可能な限り被写体５の側方から照明するよう
にして、スクリーン３に光源6a,6bからの照明光が当ら
ないようにするより方法はなく、また照明の条件によつ
ては、影を目立たなくするためにこの部分が暗い背景を
用いなければならないという制約もあつた。In order to solve such a problem, in a conventional front projection photographing apparatus, an object 5 is arranged at a predetermined distance or more from a screen 3 and a light source 6 is arranged.
A light-shielding plate is attached to a and 6b, and a light source is used as a spotlight, and illumination is performed from the side of the subject 5 as much as possible so that illumination light from the light sources 6a and 6b does not hit the screen 3. There is no way, and depending on the lighting conditions, there is a restriction that this part must use a dark background to make the shadow less noticeable.
さらに、上記のような方法で光源6a,6bからの光線が
スクリーン３に入射しないようにして被写体５を照明し
得たとしても、照明された被写体５とスクリーン３上に
投影された背景画面との輝度バランスが適当でないと合
成された最終画面が不自然なものとなる。Further, even if the light from the light sources 6a and 6b can be illuminated on the subject 5 in such a manner as not to enter the screen 3, the illuminated subject 5 and the background screen projected on the screen 3 can be used. If the luminance balance is not appropriate, the synthesized final screen will be unnatural.
被写体と背景画面との輝度バランスを調整するには、
被写体輝度を変える方法と背景画面輝度を変える方法と
が考えられるが、後者の方が容易であるので通常はこの
方法が選ばれている。To adjust the brightness balance between the subject and the background screen,
A method of changing the luminance of the subject and a method of changing the luminance of the background screen are conceivable. The latter method is usually selected because the latter method is easier.
投映光量の調整には、投映レンズ44に絞りを設けてこ
の絞りによるのがもつとも簡単であるが、そのためには
スライドフイルム面43を照明する照明系の複雑化を招
き、投映装置４の価格が上昇すると共に、メンテナンス
の面でも不利となる。It is easy to adjust the projection light amount by providing an aperture in the projection lens 44 and using the aperture. However, the illumination system for illuminating the slide film surface 43 is complicated, and the price of the projection device 4 is reduced. As it rises, it is disadvantageous in terms of maintenance.
また、投映レンズ44として、ズーミングにより入射瞳
面44aの位置が移動する通常のズームレンズを用いた場
合には、ズーミングの全域に亘つて背量画面の光量むら
を除去することは不可能となる。In addition, when a normal zoom lens in which the position of the entrance pupil surface 44a is moved by zooming is used as the projection lens 44, it becomes impossible to remove the uneven light amount of the back screen over the entire zooming area. .
そのため、投映光量を絞りに代えてNDフイルタによつ
て調整しようとすると、各濃度のNDフイルタを多く必要
とするだけでなく、連続的な光量変化を行うことができ
ず、その上カラー写真にあつては微妙なカラーバランス
が損われるという問題点があつた。Therefore, if the ND filter is used instead of the aperture to adjust the projection light amount, not only will many ND filters of each density be required, but also it will not be possible to perform continuous light amount change, and furthermore, color images At the time, there was a problem that subtle color balance was lost.
この発明はこのような従来の種々の問題点を解決し、
背景画面のコントラストの低下と被写体による影の発生
を防止すると共に、背景画面の輝度を連続的に変更し得
るフロントプロジエクシヨン撮影装置を提供することを
目的とする。The present invention solves such various conventional problems,
It is an object of the present invention to provide a front projection photographing apparatus capable of preventing a decrease in the contrast of a background screen and the occurrence of shadows due to a subject and continuously changing the luminance of the background screen.
上記の目的を達成するため、この発明によるフロント
プロジエクシヨン撮影装置は、被写体を照明する光源の
前面と撮影装置の前面とに、それぞれ第1,第２の偏光板
をその偏光方向が互いに直交するように装着すると共
に、投映装置の前面に第３の偏光板を偏光方向可変に装
着したものである。In order to achieve the above object, a front projection photographing apparatus according to the present invention includes first and second polarizing plates provided on a front surface of a light source for illuminating a subject and a front surface of the photographing device, respectively, so that their polarization directions are orthogonal to each other. And a third polarizing plate is variably mounted on the front surface of the projection device.
上記のように構成することにより、被写体を照明する
光源からの光線が直接背景画面投影用スクリーンの微小
球に入射し、微小球表面で反射して散乱光が発生して
も、これらの散乱光は鏡面反射により第１の偏光板を透
つて所定の偏光方向を有する入射光と同様の偏光方向を
保持しているので、撮影装置の前面に装着された第２の
偏光板によつて撮影装置への入射が阻止され、これに伴
つて背景画面に生じる被写体の影も除去される。With the above configuration, even if the light from the light source illuminating the subject directly enters the microspheres of the background screen projection screen and is reflected on the microsphere surface to generate scattered light, these scattered light Holds the same polarization direction as the incident light having a predetermined polarization direction through the first polarizing plate by specular reflection. Therefore, the imaging device is mounted by the second polarizing plate mounted on the front surface of the imaging device. And the shadow of the subject on the background screen is also removed.
一方、人物等の被写体からの反射光は、大部分を占め
る拡散反射成分光とごく一部の鏡面反射成分光とからな
るが、拡散反射成分光では入射光の偏光性が失われるの
で、背景画面からの反射光と共に第２の偏光板を透つて
撮影装置内に入射する。On the other hand, the reflected light from a subject such as a person is composed of a diffuse reflection component light that occupies most of the light and a very small amount of a specular reflection component light, but the diffuse reflection component light loses the polarization property of the incident light. The reflected light from the screen passes through the second polarizing plate and enters the imaging device.
また、投映装置の前面に装着した第３の偏光板を回転
させると、投映光線の偏光の向きが変化し、これに伴つ
て回帰指向性を有する反射光の偏光の向きが変化するの
で、被写体輝度は不変のままで第２の偏光板を透つて撮
影装置に入射する背景画面の光量を連続的に変化させて
被写体との輝度バランスを調整することができる。When the third polarizing plate mounted on the front of the projection device is rotated, the direction of polarization of the projected light beam changes, and the direction of polarization of the reflected light having regression directivity changes accordingly. The luminance balance with the subject can be adjusted by continuously changing the amount of light of the background screen that enters the imaging device through the second polarizing plate while maintaining the luminance unchanged.
以下、添付図面の第１図を参照してこの発明の実施例
を説明するが、第２図と同様の部分には同一の符号を付
してその説明を省略する。Hereinafter, an embodiment of the present invention will be described with reference to FIG. 1 of the accompanying drawings, but the same parts as those in FIG. 2 will be assigned the same reference numerals and explanations thereof will be omitted.
被写体５を照明する光源6a,6bの前面に第１の偏光板7
a,7bを互いに偏光方向を一致させて装着し、撮影レンズ
11及び投映レンズ44の前面に第２の偏光板８及び第３の
偏光板９をそれぞれ装着する。A first polarizing plate 7 is provided in front of light sources 6a and 6b for illuminating the subject 5.
a, 7b with the same polarization direction
A second polarizing plate 8 and a third polarizing plate 9 are mounted on the front surface of the projection lens 11 and the projection lens 44, respectively.
いま、説明を分りやすくするため、第１図に示す各部
がすべて水平面内にあるものと仮定し、第１の偏光板7
a,7bの偏光方向を共に水平方向に受けた場合について考
察する。Now, for the sake of simplicity, it is assumed that all the parts shown in FIG.
Let us consider the case where both the polarization directions of a and 7b are received in the horizontal direction.
第１の偏光板7a,7bを透過した照明光はいずれもｐ−
偏光しているが、この照明光で照明された被写体５の拡
散反射光成分には、入射光の偏光特性が失われてｓ−偏
光成分が含まれるようになる。The illumination light transmitted through the first polarizing plates 7a and 7b is p-
Although the light is polarized, the diffusely reflected light component of the subject 5 illuminated with the illumination light loses the polarization characteristic of the incident light and contains an s-polarized light component.
一方、第３図に示したように照明光がスクリーン３の
微小球33の表面で反射して生じる散乱光r1,r2,……の成
分は入射光のｐ−偏光がそのまま保持されている。On the other hand, as shown in FIG. 3, the components of the scattered lights r 1 , r 2 ,... Generated by the reflection of the illumination light on the surface of the microsphere 33 of the screen 3 retain the p-polarized light of the incident light as it is. I have.
ここで、撮影レンズ11の前面に装着した第２の偏光板
８を回転させてその偏光方向を第１の偏光板7a,7bの偏
光方向に直交する垂直方向とすると、撮影レンズ11へ
は、被写体の拡散反射光のｓ−偏光成分と、スクリーン
３から回帰指向性を有して反射する反射光R1,R2……
（第３図）のみとなる。Here, assuming that the second polarizing plate 8 mounted on the front surface of the photographing lens 11 is rotated to set its polarization direction to a vertical direction orthogonal to the polarization direction of the first polarizing plates 7a and 7b, and s- polarized component of the diffuse reflection light of the object, the reflected light R 1, which reflects a regression directivity from the screen 3, R 2 ......
(FIG. 3) only.
これにより、被写体の照明光が直接スクリーン３に当
つても背景画面が白つぽく薄くなるおそれがなく、より
鮮明な背景画面を得ることができ、この現象に付随して
スクリーン３の背景画面に生じる被写体５の影も除去さ
れ、同時に被写体５から反射する不自然な照返しも除去
される。As a result, even if the illuminating light of the subject directly hits the screen 3, the background screen is not likely to be white and thin, and a clearer background screen can be obtained. The resulting shadow of the subject 5 is also removed, and at the same time, unnatural reflections reflected from the subject 5 are also removed.
これらの調整状態は撮影装置が一眼レフカメラである
場合にはフアインダ画面上で、そうでない場合にはフイ
ルム面12をCCD撮影面に置き換えてモニタ画面上で観察
することができる。These adjustment states can be observed on a monitor screen when the photographing apparatus is a single-lens reflex camera, and when not, the film surface 12 is replaced with a CCD photographing plane.
これにより、被写体５に対する照明の自由度が大幅に
向上し、従来不可能であるとされていたフロントライテ
イングも可能になると共に、被写体５とスクリーン３と
の間隔を小さくすることができるので、開放付近の絞り
を用いても被写体と背景画面の両方を充分に深度内に入
れることが可能になる。As a result, the degree of freedom of illumination for the subject 5 is greatly improved, front writing that has been considered impossible in the past can be performed, and the distance between the subject 5 and the screen 3 can be reduced. Even if a stop in the vicinity is used, both the subject and the background screen can be sufficiently set within the depth.
なお、第１の偏光板7a,7bの偏光方向をどのような向
きにセツトするかは、一般にｓ−偏光入射時の方がｐ−
偏光入射時より散乱光の強度が大きいという点と、ハー
フミラー２の透過率の偏光方向依存性の程度等を加味し
て適宜設定すればよい。In general, the direction in which the polarization directions of the first polarizers 7a and 7b are set is p-polarized when s-polarized light is incident.
It may be appropriately set in consideration of the fact that the intensity of the scattered light is higher than that at the time of incidence of the polarized light and the degree of the polarization direction dependence of the transmittance of the half mirror 2.
また、投映レンズ44の前面に装着された第３の偏光板
９を回転させてその偏光方向を変化させると、回帰指向
性を有するスクリーン３の反射光のうち、第２の偏光板
８の偏光方向（この実施例では垂直方向）に一致するｓ
−偏光成分だけが撮影レンズ11へ入射し、背景光量を連
続的に変化させて被写体との輝度バランスを自由に調整
することができる。In addition, when the third polarizing plate 9 mounted on the front surface of the projection lens 44 is rotated to change its polarization direction, the polarization of the second polarizing plate 8 in the reflected light of the screen 3 having regression directivity is obtained. S corresponding to the direction (vertical direction in this embodiment)
-Only the polarized light component is incident on the taking lens 11, and the background light amount is continuously changed, so that the luminance balance with the subject can be freely adjusted.
この時、第２の偏光板８を透過して投影レンズ11に入
射する背景光量は、第３の偏光板９の偏光方向が第２の
偏光板８の偏光方向に一致する時最大に、直交する時最
小になるが、その中間では第３の偏光板９の偏光方向の
回転角をψとすると撮影レンズ11への入射光量はcos2ψ
に比例して変化する。At this time, the amount of background light transmitted through the second polarizing plate 8 and incident on the projection lens 11 is orthogonal to the maximum when the polarizing direction of the third polarizing plate 9 matches the polarizing direction of the second polarizing plate 8. When the rotation angle of the polarization direction of the third polarizing plate 9 is 偏光 in the middle, the amount of light incident on the photographing lens 11 is cos 2 ψ.
Changes in proportion to
なお、実際のフロントプロジエクシヨン撮影装置で
は、投映装置４の光軸l1は垂直面内にあり、且つ、光源
6a,6bは被写体５の左右斜め上方に位置するのが普通で
あるが、第１図に示すように投映装置４の光軸l1を水平
面内に位置させるようにしてもよく、このようにするこ
とにより、投映装置４の操作性を向上させることができ
る。In actual front Puroji Ekushi Yon imaging device, the optical axis l 1 of the projection apparatus 4 is in the vertical plane, and the light source
6a, 6b is a common to a position in the left-right diagonally above the object 5 may be the optical axis l 1 of the projection apparatus 4 as shown in FIG. 1 so as to be positioned in a horizontal plane, thus By doing so, the operability of the projection device 4 can be improved.
また、この実施例ではハーフミラー２を撮影装置１の
光軸l0に対して45度の角度で斜在させたが、この角度は
これに限るものではなく、その近くで自由に設定するこ
とが可能であり、これに伴つて投影装置４の光軸l1の傾
きを変えるようにすればよい。Although was Zaisa obliquely at an angle of 45 degrees through the half mirror 2 with respect to the optical axis l 0 of the photographing apparatus 1 in this embodiment, this angle is not limited thereto, it is set freely in the vicinity are possible, it may be this to change the inclination of the optical axis l 1 accompaniment with projection device 4.
以上述べたように、この発明によれば、被写体を照明
する光源の前面と撮影装置及び投映装置の前面とに、そ
れぞれ第1,第2,第３の偏光板を装着するだけのきわめて
簡単な構成により、被写体照明の自由度を大幅に増大さ
せ、背景画面を鮮明にすると共に被写体の影の発生を防
止し、且つ被写体の自然な照返しを除去することが可能
になる。As described above, according to the present invention, it is extremely simple to mount the first, second, and third polarizers on the front surface of the light source that illuminates the subject and the front surfaces of the photographing device and the projection device, respectively. With this configuration, the degree of freedom in subject illumination is greatly increased, the background screen is sharpened, the occurrence of shadows of the subject is prevented, and natural reflection of the subject can be removed.
また、背景光量を変化させて被写体との輝度バランス
を容易に調整することができ、より臨場感のあるポート
レート写真を得ることができる。In addition, the luminance balance with the subject can be easily adjusted by changing the amount of background light, and a more realistic portrait photograph can be obtained.
第１図はこの発明の一実施例を示す光路図、 第２図はフロントプロジエクシヨン撮影装置の原理を示
す光路図、 第３図は背景投映用スクリーンの一部を拡大して示す断
面図である。 １……撮影装置、２……ハーフミラー ３……スクリーン、４……投映装置 ５……被写体 6a,6b……被写体照明用の光源 7a,7b……第１の偏光板、８……第２の偏光板 ９……第３の偏光板、11……撮影レンズ 33……微小球、44……投投レンズFIG. 1 is an optical path diagram showing one embodiment of the present invention, FIG. 2 is an optical path diagram showing the principle of a front projection photographing apparatus, and FIG. 3 is a cross-sectional view showing an enlarged part of a background projection screen. It is. DESCRIPTION OF SYMBOLS 1 ... Photographing device, 2 ... Half mirror 3 ... Screen, 4 ... Projection device 5 ... Subject 6a, 6b ... Light source for subject illumination 7a, 7b ... 1st polarizing plate, 8 ... 2 polarizing plate 9 ... 3rd polarizing plate, 11 ... photography lens 33 ... microsphere, 44 ... projection lens
───────────────────────────────────────────────────── フロントページの続き (56)参考文献 特開 昭60−196738（ＪＰ，Ａ) 特開 昭61−107482（ＪＰ，Ａ) 特開 昭47−22009（ＪＰ，Ａ) 特開 昭49−65217（ＪＰ，Ａ) 特開 昭49−39413（ＪＰ，Ａ) 実開 昭57−112334（ＪＰ，Ｕ) 実開 昭62−169332（ＪＰ，Ｕ) 実開 昭51−143441（ＪＰ，Ｕ) ──────────────────────────────────────────────────続 き Continuation of front page (56) References JP-A-60-196738 (JP, A) JP-A-61-107482 (JP, A) JP-A-47-22009 (JP, A) JP-A-49-49 65217 (JP, A) JP-A-49-39413 (JP, A) JP-A-57-112334 (JP, U) JP-A-62-169332 (JP, U) JP-A-51-143441 (JP, U)
Claims (1)
写体を撮影する撮影装置と、上記ハーフミラーで反射し
た光軸が上記撮影装置の光軸に一致するように配設され
た背景画面の投映装置と、該投映装置により投映される
スクリーンとを有し、該スクリーンの前方に配位させた
上記被写体を上記スクリーン上に投映された背景画面と
供に撮影するフロントプロジエクシヨン撮影装置におい
て、 上記被写体を照明する光源の前面と上記撮影装置の前面
とに、それぞれ第1,第２の偏光板をその偏光方向が互い
に直交するように装着すると共に、上記投映装置の前面
に第３の偏光板を偏光方向可変に装着したことを特徴と
するフロントプロジエクシヨン撮影装置。1. An imaging device for photographing a subject through a half mirror obliquely disposed on an optical axis, and an optical axis reflected by the half mirror is arranged to coincide with an optical axis of the imaging device. A front projection that has a projection device for a background screen and a screen projected by the projection device, and captures the subject arranged in front of the screen together with the background screen projected on the screen. In the imaging device, first and second polarizing plates are mounted on the front surface of the light source for illuminating the subject and the front surface of the imaging device, respectively, so that their polarization directions are orthogonal to each other, and on the front surface of the projection device. A front projection photographing apparatus wherein a third polarizing plate is mounted so as to be variable in polarization direction.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1008329A JP2749853B2 (en) | 1989-01-17 | 1989-01-17 | Front projection photography equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1008329A JP2749853B2 (en) | 1989-01-17 | 1989-01-17 | Front projection photography equipment |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH02187738A JPH02187738A (en) | 1990-07-23 |
| JP2749853B2 true JP2749853B2 (en) | 1998-05-13 |
Family
ID=11690146
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1008329A Expired - Fee Related JP2749853B2 (en) | 1989-01-17 | 1989-01-17 | Front projection photography equipment |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2749853B2 (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH03127040A (en) * | 1989-10-13 | 1991-05-30 | Matsushita Electric Ind Co Ltd | Reflection type screen |
| KR20030002285A (en) * | 2001-06-28 | 2003-01-08 | 김영희 | Luminescence screen for digital photography |
-
1989
- 1989-01-17 JP JP1008329A patent/JP2749853B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPH02187738A (en) | 1990-07-23 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US7424216B2 (en) | Camera flash diffuser for macro photography | |
| JPS63502221A (en) | Image processing device for controlling the transfer function of an optical system | |
| US4067026A (en) | Front projection system embodying a single lens | |
| US3985425A (en) | Polarizing beam splitting unit | |
| US4018519A (en) | Composite photography apparatus and method utilizing a polarizing beam splitting unit | |
| US6677999B2 (en) | Non-polarizing LCD shutter | |
| JP2749853B2 (en) | Front projection photography equipment | |
| US5055863A (en) | Multiple image transfer camera system | |
| US5459551A (en) | Light emission device for focus detection having a chart and an illuminator | |
| JPS59129810A (en) | Focusing detecting device | |
| JP2004117478A (en) | Camera | |
| JP2757391B2 (en) | Single-lens reflex camera with automatic focus detection device | |
| JP4083315B2 (en) | Photometric device | |
| JPS62141862A (en) | Finder device for single-lens reflex camera | |
| JP3377835B2 (en) | Camera viewfinder structure | |
| WO1994028447A1 (en) | Light polarizing and reflection filtering system | |
| JP2003140234A (en) | Illuminator and imaging unit | |
| JP3100799B2 (en) | Optical viewfinder smear display | |
| JPS6235067Y2 (en) | ||
| JP3437262B2 (en) | Projection system for automatic focus detection | |
| JPS62141864A (en) | Video camera attachment device for single-lens reflex camera | |
| JPH0818736A (en) | Picture input device | |
| SU1185304A1 (en) | Device for making photograph of the first exposure of combined frame | |
| JPH07225414A (en) | Reflected light adjusting photographing device | |
| JPS5940720Y2 (en) | Vehicle photography device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |
|
| LAPS | Cancellation because of no payment of annual fees |