JPS5931994A - Panoramic projector for planetarium - Google Patents
Panoramic projector for planetariumInfo
- Publication number
- JPS5931994A JPS5931994A JP58129587A JP12958783A JPS5931994A JP S5931994 A JPS5931994 A JP S5931994A JP 58129587 A JP58129587 A JP 58129587A JP 12958783 A JP12958783 A JP 12958783A JP S5931994 A JPS5931994 A JP S5931994A
- Authority
- JP
- Japan
- Prior art keywords
- lens
- focal point
- light
- planetarium
- objective lens
- 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
- 238000005286 illumination Methods 0.000 claims description 6
- 230000003287 optical effect Effects 0.000 claims description 5
- 230000002093 peripheral effect Effects 0.000 claims description 4
- 235000009508 confectionery Nutrition 0.000 claims 1
- 230000005540 biological transmission Effects 0.000 description 3
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 3
- 239000010931 gold Substances 0.000 description 3
- 229910052737 gold Inorganic materials 0.000 description 3
- 229910052751 metal Inorganic materials 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 229910052716 thallium Inorganic materials 0.000 description 2
- BKVIYDNLLOSFOA-UHFFFAOYSA-N thallium Chemical compound [Tl] BKVIYDNLLOSFOA-UHFFFAOYSA-N 0.000 description 2
- 101100233788 Arabidopsis thaliana JMJ25 gene Proteins 0.000 description 1
- PEDCQBHIVMGVHV-UHFFFAOYSA-N Glycerine Chemical compound OCC(O)CO PEDCQBHIVMGVHV-UHFFFAOYSA-N 0.000 description 1
- 244000124853 Perilla frutescens Species 0.000 description 1
- 101100345716 Saccharomyces cerevisiae (strain ATCC 204508 / S288c) MMF1 gene Proteins 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 238000005034 decoration Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000002310 reflectometry Methods 0.000 description 1
Classifications
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B27/00—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00
- G02B27/18—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00 for optical projection, e.g. combination of mirror and condenser and objective
-
- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09B—EDUCATIONAL OR DEMONSTRATION APPLIANCES; APPLIANCES FOR TEACHING, OR COMMUNICATING WITH, THE BLIND, DEAF OR MUTE; MODELS; PLANETARIA; GLOBES; MAPS; DIAGRAMS
- G09B27/00—Planetaria; Globes
- G09B27/02—Tellurions; Orreries
-
- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
- G03B37/00—Panoramic or wide-screen photography; Photographing extended surfaces, e.g. for surveying; Photographing internal surfaces, e.g. of pipe
- G03B37/06—Panoramic or wide-screen photography; Photographing extended surfaces, e.g. for surveying; Photographing internal surfaces, e.g. of pipe involving anamorphosis
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Optics & Photonics (AREA)
- Astronomy & Astrophysics (AREA)
- Business, Economics & Management (AREA)
- Educational Administration (AREA)
- Educational Technology (AREA)
- Theoretical Computer Science (AREA)
- Instructional Devices (AREA)
- Projection Apparatus (AREA)
Abstract
(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.
Description
【発明の詳細な説明】
本発明はパノラマ投影装置に関し、特に種々のパターン
や内容のｍｌ象をプラネタリウムのドームの球状−の環
状部をなすスクリーンに投影するためのプラネタリウム
用のパノラマ投影装置に関するＯ
従来プラネタリウムにおいてパノラマ像ヲ投影するため
に法数個（好ましくは１２個）のスライド投影機が用い
られる。この場合、各スライド投影機が全パノラマ像の
一区分（３０；りを投映する」：うにそ）′しそ几プラ
ネタリウムドームのスカイラインに配置される。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a panoramic projection device, and more particularly to a panoramic projection device for a planetarium for projecting ML images of various patterns and contents onto a screen forming a spherical annular portion of a dome of a planetarium. Conventionally, a modulus (preferably 12) of slide projectors are used to project panoramic images in planetariums. In this case, each slide projector projects one section (30) of the entire panoramic image and is placed on the skyline of the Shiso Planetarium Dome.
この投１天はゾライ・タリウムドームの対向面に対して
表示装置の横方向になされる。このため、グリッド等の
バ／′ラマ像を変更するとき全投影ｔ、＆のスライドを
すべて変えねばならず、その操作が大変面１刊で、らる
。This throw is made in the lateral direction of the display device against the opposing surface of the Zorai Thallium dome. For this reason, when changing the bar/'rama image of the grid, etc., it is necessary to change all the slides of all projections t, &, and this operation is very difficult in one page.
さりにこのような複合投映においては各区分像の接合線
が不完全であるという欠点がある。この欠点は投影機金
変えた場合スライド位置を正確に変更前の位置に合致さ
せることが困難であることとあい俟ってさらに増大する
。Another disadvantage of such composite projection is that the joining lines of each segmented image are incomplete. This disadvantage is further exacerbated by the fact that when changing the projector metal, it is difficult to accurately match the slide position to the position before the change.
さらに像接合課における隙の東なりにより明度が変化−
２Ｊ″るという欠点がある。さらにまた各投影機に、ｆ
ｄいてスライドを入れ変える場合のエラーにより投映干
渉が起る。また「オムニマックス・フィルム」と称する
装置においては、写真がプラネタリウムのドームの大部
分（約１５０度）に魚眼レンズを介して投映さ几る。Furthermore, the brightness changes depending on the easterly direction of the gap in the image joining section.
2J''.Furthermore, each projector has f
Projection interference occurs due to errors when changing slides. In a device called "OmniMax Film," photographs are projected onto a large portion (approximately 150 degrees) of the planetarium's dome through a fisheye lens.
この装置はその技術が相当に費用を要するものであると
いう欠点がある。さらにこの装置はプラネタリウムの全
ドーム（最吐１８０度）（ｉ−その投映範囲とすること
ができない。This device has the disadvantage that the technology is quite expensive. Moreover, this device cannot cover the entire dome of a planetarium (180 degrees at its maximum) (i-its projection range).
また相当に強力なエネルギー消費量の高い光源を必要と
し、したがって特殊の冷却装置が必要となる。It also requires a fairly powerful and energy consuming light source and therefore requires special cooling equipment.
さらに、星スライド投影プラネタリウムに用いられる集
光共振装置（東ドイツ特許明１ｉｉ１１１−ウ゛」１５
ろ９ろろ）が知られている。この装置の欠点はパノラマ
投映ができないことである。In addition, a light condensing resonator used in a star slide projection planetarium (East German Patent Mei 1ii 111-15)
Ro9 Roro) is known. The disadvantage of this device is that it cannot perform panoramic projection.
本発明は上記の欠点全克服することを目的とする。The present invention aims to overcome all the above-mentioned drawbacks.
本発明の他の目的は技術上の費用′ｆｆ：減少し得、ま
り誤差を誠少し得るプラネタリウム用のパノラマ投影装
置全提供することである。Another object of the invention is to provide an overall panoramic projection device for a planetarium, which can reduce the technical cost and minimize distortion errors.
不発！男のさらに他の目的は単一の投影機により全パノ
ラマ像を投映し得るプラネタリウム用のパノラマ投影装
置を提供することである。unexploded! Yet another object of the invention is to provide a panoramic projection device for a planetarium that can project an entire panoramic image with a single projector.
上記の目的は対物レンズに対向する球状の光透：＋ｉ、
’へ面で、るる第１０面Ｓｌと、対物レンズと反対側の
双曲反射面１−１となる第２の而とで有する環状反射レ
ンズと対物レンズの後段に備えたパノラマ投影装置によ
って叉状される。The above purpose is to transmit spherical light facing the objective lens: +i,
A panoramic projection device provided at the rear stage of the objective lens and an annular reflecting lens having the 10th surface Sl and a second surface serving as the hyperbolic reflecting surface 1-1 on the opposite side of the objective lens. will be issued.
双曲１■１（の第１の焦点は対物レンズの一′１ｉ面に
おける−）帥咄」二に存在し、光透１＋す球ＬｍＳ＋の
中心と一致する。ＪＩＡＩ状反射レンズはまた双曲面１
（の９°Ｃ・ｉ４ｉ＋−にの！’ｊ”＞ ２の焦点と一
致する中心金有する球状元透過周ｉｌ′１１８２をイア
する。The first focal point of the hyperbolic 1 1 exists at the -) 2 plane on the 1'1i plane of the objective lens, and coincides with the center of the light transmission 1+ sphere LmS+. The JIAI-like reflective lens is also a hyperboloid 1
A spherical original transmission circumference il' 1182 with a central metal coinciding with the focal point of !'j''>2 at (9°C·i4i+−) is taken.
上記パノラマ投映部は一面からプラネタリウムドームの
環状ゾーンへ特定の投映部なす場合に調＃”：ｊされる
。The panoramic projection section is adjusted when a specific projection section is projected from one side to the annular zone of the planetarium dome.
本発明の装置によれば、単一の写真スライドによって３
’ＳＯ度の環状ゾーンま、゛とは少くとも１８０度のプ
ラネタリウムのドームの範囲にて応することが可能であ
り、従来装置の場合の複叔個の投影機ｔ ｌ−１１いる
場合の不安定となる欠点をなくすることができる３、さ
らに共振素子を用いた照明系によって十分な明４度を確
保し７・得る１、すｌ′ｊわち、このＪ））、５合この
照！、シＪ系によ・り一定角の方向の４に内からの）゛
Ｃ束’＃ｔ”Ｊ形状の光透ノ１゛４０金λ１１１〜て偵
知できるようにすることが好ましい。According to the device of the invention, a single photographic slide can
The annular zone of SO degree can be applied within the dome area of the planetarium of at least 180 degrees, and it is possible to cope with the range of the dome of the planetarium of at least 180 degrees, and it is possible to respond to the annular zone of SO degree, which is a problem when there are multiple projectors tl-11 in the case of the conventional device. It is possible to eliminate the disadvantage of stability 3, and to ensure sufficient brightness 4 degrees with an illumination system using a resonant element, 1, sl'j, that is, this J)), 5 this illumination. ! , It is preferable to use the C-J system to detect the ``C bundle'#t'' J-shaped light beam 1 40 gold λ 111 ~ from the inside in a direction of a constant angle.
したがって、先づ例えば土星から１じｌパ賢される土星
環の回転や月のｊし：Ｌ ：道の即の辺動′イ、・のよ
うに１」］形スライドの一二カによる新之な投（失効呆
ゲ１；、することかでざるＣ）
１以下不昆′、：ＪＪの実施例を図面を参照（７て説明
する。Therefore, first, for example, the rotation of Saturn's ring, which is 1.5 degrees from Saturn, and the rotation of the moon: L: Immediate movement of the path, ``1''] This is an example of JJ (see drawings) (7).
図面において、投影装置はその光軸１１土に順次投映光
ビーム１６を発射する光源１．集光レノズ２．九軸１１
に対称の集光共振素子６．視野レンズ４および対物レン
ズ５を配置してなる。対物レンズ乙の後方には、元ビー
ム１３を図示しないプラネタリウムのドーム１２の一部
に導くための環状反射レンズ６金有する。、共振素子３
は下面６′と上面ダを有し、上記面６′とダの内ｆｉ−
１ｌ］はレンズ２に対向する面６′における光入射ロア
およびレンズ４に対向する面ろ“におしする環状光出射
口８を除いて高い反射能を有する。共振素子乙の円筒面
６′は全反射１ｒＩｒである。In the drawing, the projection device includes a light source 1. Concentrating lens 2. Nine axis 11
6. A condensing resonant element symmetrical to 6. A field lens 4 and an objective lens 5 are arranged. Behind the objective lens B, there is a ring-shaped reflective lens 6 for guiding the original beam 13 to a part of the dome 12 of the planetarium (not shown). , resonant element 3
has a lower surface 6' and an upper surface Da, and an inner fi-
1l] has a high reflectivity except for the light entrance lower part on the surface 6' facing the lens 2 and the annular light exit opening 8 on the surface 6' facing the lens 4. The cylindrical surface 6' of the resonator element B is the total reflection 1rIr.
投映すべきパノラマ像の写真スライド１０は共振木子乙
とレンズ４との間の投映レンズ１３に対向する位置にｍ
ｌ１人される。環状反射レンズ６はまた対物レンズ５と
反対の・ａｌｌｊに双曲反射面１−１をＪ汀う−る【Ｊ
しかし５ながら上記双曲反射面Ｊ−ｉ金有する反射層は
対物レンズ５に対向する。A photographic slide 10 of a panoramic image to be projected is placed at a position facing the projection lens 13 between the resonator and the lens 4.
1 person will be killed. The annular reflective lens 6 also has a hyperbolic reflective surface 1-1 on the opposite side of the objective lens 5. opposite.
またし／ズ６は上記対物ｌ／ンズ５に対向する光透過球
面Ｓ＋を有する。The lens 6 also has a light transmitting spherical surface S+ facing the objective lens 5.
」二記Ｖンズ６の双曲反射面Ｊ（は対物レンズ５内の元
軸１１に直角の平面に位置する対物１１ｉ１１の第１の
焦点ＩＢＭ１を有する。The hyperbolic reflecting surface J of the V lens 6 has a first focal point IBM1 of the objective 11i11 located in a plane perpendicular to the original axis 11 in the objective lens 5.
焦点Ｆ１はｙＣ透過球面Ｓ＋の中心と一致する。The focal point F1 coincides with the center of the yC transmission sphere S+.
し／ズ６は球面の帯Ｓ２であるところの光透過球面９を
イイし、該球面９の中心は双曲反射面■■の元ｉ１１＋
１１ ｕ二の第２の焦点Ｆ２と一致する。S/Z 6 is a light transmitting spherical surface 9 which is a spherical band S2, and the center of the spherical surface 9 is the element i11+ of the hyperbolic reflecting surface ■■.
11 coincides with the second focal point F2 of u2.
スライド１０は元軸１１を中心として回転可能である。The slide 10 is rotatable around a base shaft 11.
その回軸手段は、軸受（図示せず）と、スライド１００
面内において光軸と略一致する軸と、スライド１０のリ
ム部と係合する歯車手段１４と、例えばザーボモータ等
の駆動手段１６に接続された歯車手段１５とにより（１
４成さ）Ｌる。The rotation means includes a bearing (not shown) and a slide 100.
(1
4) Lru.
次に上述した＋１４造を有する文飾の燥作金説明する。Next, we will explain how to make a patterned decoration with the above-mentioned +14 structure.
光源１よりの元ビーム１３は集光レンズ２を介して共振
素子６の光入射ロアに入り、全入射ツＣビームが環状光
出射口８より導出さ一；１＋、 （共振素子ろ内の元ビ
ーム路は図示せず）、写真スライド１０を照明し、その
映像金プラネタリウム（図示せず）のドーム１２の一部
をなすスクリーン１２に投映するものである。写真スラ
イド１０よりの映像光ビーム１６は視野レンズ４によっ
て対物レンズ５に導びかれる。The original beam 13 from the light source 1 enters the light entrance lower part of the resonant element 6 via the condensing lens 2, and the total incident C beam is led out from the annular light exit 8. A beam path (not shown) illuminates the photographic slide 10 and projects its image onto a screen 12 forming part of a dome 12 of a gold planetarium (not shown). An image light beam 16 from a photographic slide 10 is directed by a field lens 4 to an objective lens 5.
対物レンズ５よりのビーム１６は環状双曲反射レンズ６
に導びかれ、双曲反射面１（で反射されて而９を通過し
てスクリーン１２に導びかれて写真スライド１０の映像
（図示せず）としてスクリーン１２に投映される。The beam 16 from the objective lens 5 is transmitted through the annular hyperbolic reflection lens 6.
The light is guided by the hyperbolic reflecting surface 1 (9) and guided to the screen 12, where it is projected onto the screen 12 as an image of a photo slide 10 (not shown).
レンズ６において映像光ビーム１６は双曲反射面ｔＩに
より常に点＋Ｉｉｌ １６′で示すように焦点Ｆ２とビ
ート１ろの而１−Ｉにおける入射点との間の直線の方向
に反射される。In the lens 6, the image light beam 16 is always reflected by the hyperbolic reflecting surface tI in the direction of a straight line between the focal point F2 and the point of incidence at beat 1 or 1-I, as indicated by point +Iil 16'.
回転手段１４，１５．１６を操作することにより写真ス
ライド１０の環状映［象をスクリーン１２に？ｆ−′ｒ
つて移動さぜることかできる。By operating the rotating means 14, 15, 16, the photographic slide 10 is circularly projected onto the screen 12. f-'r
You can touch it and move it around.
本発明は上記の実施例に限られるものではな（・０例え
ば環状光出射口の一部のみを用いることも可能である。The present invention is not limited to the above-mentioned embodiments (.0) For example, it is also possible to use only a part of the annular light exit.
この場合は少くともスライド１０と共振素子乙の一方を
光Ｇｌｔ金中心として適宜のスピードで回転させる。In this case, at least one of the slide 10 and the resonant element B is rotated at an appropriate speed with the optical Glt gold as the center.
図面は不発明の一実施例のプライ・タリウム用のパノラ
マ投影装置の略図である。
１・・・光源、 ２・・集光レンズ
６・・・集光共振素子、 ４・・・視野レンズ５・・・
対物レンズ、 ６・・・環状反射レンズ７・・・元入
射口、 ８・・・環状光出射口９・・・球状光透過面
、 １０・・・写真スライド１１・・・光軸、 １
２・・・スクリーン１３・・・元ビーム、 １４・・
・歯車手段１５・・・歯車手段、 １６・・・駆動手
段Ｈ・・・双曲反射面、 Ｓｌ・・・光透過球面Ｓ２・
・・球状光透過周面、 Ｆｌ・・・第１の焦点Ｆｉ−・
・・第２の焦点The drawing is a schematic diagram of a panoramic projection device for ply thallium according to one embodiment of the invention. DESCRIPTION OF SYMBOLS 1... Light source, 2... Condensing lens 6... Condensing resonance element, 4... Field lens 5...
Objective lens, 6... Annular reflecting lens 7... Original entrance port, 8... Annular light exit port 9... Spherical light transmitting surface, 10... Photographic slide 11... Optical axis, 1
2...Screen 13...Original beam, 14...
・Gear means 15... Gear means, 16... Drive means H... Hyperbolic reflective surface, Sl... Light transmitting spherical surface S2.
...Spherical light transmitting peripheral surface, Fl...first focal point Fi-.
...Second focus
Claims (1)
影するためのプラネタリウム用のパノラマ投影装置にお
いて、光軸」二に互に光学的に共軸）（順次配置ｉ：’
＋：さり、た照明装置と、視野レンズと、対・物レンズ
と、環状反射レンズとを備え、該照り」装置は光源と、
集光レンズと、光学共振菓子と金有し、該照明装置が照
明光ビームを照射し、該写真スライドケ該共鳴素子と該
視野レンズとの間において該共鳴素子に隣接して該光軸
に直角に配ｌ−５該共鳴素子が該集光レンズに対向する
光入射口と、該レンズに対向する環状の光出射口とを有
し、該環状反射レンズが該対物レンズに対向する光透過
球面と、該対物レンズと反対側の双曲反射面と、球状光
透過周面とを有し、該双曲反射面がそのｙＣ軸に第１の
焦点と第２の焦点と金有し、該光透過球面がその光軸」
二に第６の焦点を有し、該第１焦点と該第３焦点とが該
対物レンズにおいて略一致し、該球状元透過周面が第４
の焦点を有し、該第４焦点と該第２焦点とが該光・Ｍｆ
＋上に於て一致１．、該写真スライドを該環状’／Ｃ出
射口を通して導びかれた該照明光束により照明し、照明
された写共スライドよりのｙｆＳを該視野レンズ、対物
レンズ、環状反射レンズを介して該球状元透過周面全通
して該プラネタリウムドームに投影することを特徴とす
るプラネタリウム用のパノラマ投影装置。 （２、特許請求の範囲第１項記載のパノラマ投影装置に
おいて、該写真スライドを該つ′Ｃ学共鳴素子に対して
該光１ｌｑＩＩ全中心として回転させる手段を更に備け
たことを特徴とするもの。(1) In a panoramic projection device for a planetarium for projecting photographic streaks and images onto a planetarium dome, the optical axes are optically coaxial with each other (sequentially arranged i:'
+: The illumination device includes a light source, a field lens, an objective lens, and an annular reflective lens.
a condenser lens, an optically resonant confectionery lens, and a light source, the illumination device emitting an illumination light beam, the photographic slide between the resonant element and the field lens, adjacent to the resonant element and perpendicular to the optical axis; 1-5, the resonant element has a light entrance opening facing the condensing lens, and an annular light exit opening facing the lens, and the annular reflecting lens has a light transmitting spherical surface facing the objective lens. , a hyperbolic reflective surface on the opposite side of the objective lens, and a spherical light transmitting peripheral surface, the hyperbolic reflective surface has a first focal point and a second focal point on its yC axis; The light transmitting sphere is its optical axis.
Second, the objective lens has a sixth focal point, the first focal point and the third focal point substantially coincide with each other in the objective lens, and the spherical original transmitting peripheral surface is the fourth focal point.
The fourth focal point and the second focal point are the light Mf
+ Match above 1. , the photographic slide is illuminated by the illumination beam guided through the annular '/C exit aperture, and the yfS from the illuminated photographic slide is transmitted through the field lens, objective lens, and annular reflection lens to the spherical element. A panoramic projection device for a planetarium, characterized in that it projects onto the planetarium dome through the entire transparent peripheral surface. (2. The panoramic projection apparatus according to claim 1, further comprising means for rotating the photographic slide with respect to the C-resonance element with the entire center of the light 1lqII. .
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DD24196582A DD208880A1 (en) | 1982-07-27 | 1982-07-27 | PANORAMA PROJECTION DEVICE |
| DD09B/24196 | 1982-07-27 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS5931994A true JPS5931994A (en) | 1984-02-21 |
Family
ID=5540217
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP58129587A Pending JPS5931994A (en) | 1982-07-27 | 1983-07-18 | Panoramic projector for planetarium |
Country Status (3)
| Country | Link |
|---|---|
| JP (1) | JPS5931994A (en) |
| DD (1) | DD208880A1 (en) |
| DE (1) | DE3317495A1 (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE19641656A1 (en) * | 1996-10-09 | 1998-04-23 | Zeiss Carl Jena Gmbh | Apparatus for generating annular images |
| US20080304277A1 (en) | 2007-06-07 | 2008-12-11 | Jeyachandrabose Chinniah | Increased efficiency led projector optic assembly |
| DE102007044301A1 (en) * | 2007-09-17 | 2009-03-26 | Eads Deutschland Gmbh | Optical device |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS4911323A (en) * | 1972-06-01 | 1974-01-31 | ||
| JPS4940564A (en) * | 1972-08-18 | 1974-04-16 |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2638033A (en) * | 1950-12-19 | 1953-05-12 | Buchele Donald Robert | Unitary catadioptric objective lens system |
| DD153933A1 (en) * | 1980-10-31 | 1982-02-10 | Ludwig Meier | OPTICAL SYSTEM FOR DIAPROJECTION |
-
1982
- 1982-07-27 DD DD24196582A patent/DD208880A1/en unknown
-
1983
- 1983-05-13 DE DE19833317495 patent/DE3317495A1/en active Granted
- 1983-07-18 JP JP58129587A patent/JPS5931994A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS4911323A (en) * | 1972-06-01 | 1974-01-31 | ||
| JPS4940564A (en) * | 1972-08-18 | 1974-04-16 |
Also Published As
| Publication number | Publication date |
|---|---|
| DD208880A1 (en) | 1984-04-11 |
| DE3317495C2 (en) | 1991-11-28 |
| DE3317495A1 (en) | 1984-02-02 |
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