DE737158C - Device for the projection of images with optical compensation - Google Patents

Device for the projection of images with optical compensation

Info

Publication number
DE737158C
DE737158C DEK149803D DEK0149803D DE737158C DE 737158 C DE737158 C DE 737158C DE K149803 D DEK149803 D DE K149803D DE K0149803 D DEK0149803 D DE K0149803D DE 737158 C DE737158 C DE 737158C
Authority
DE
Germany
Prior art keywords
images
projection
optical compensation
prism
compensation
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
Application number
DEK149803D
Other languages
German (de)
Inventor
Dr Ernst Lehmann
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Klangfilm GmbH
Original Assignee
Klangfilm GmbH
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Klangfilm GmbH filed Critical Klangfilm GmbH
Priority to DEK149803D priority Critical patent/DE737158C/en
Application granted granted Critical
Publication of DE737158C publication Critical patent/DE737158C/en
Expired legal-status Critical Current

Links

Classifications

    • 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
    • G03B41/00—Special techniques not covered by groups G03B31/00 - G03B39/00; Apparatus therefor
    • G03B41/02—Special techniques not covered by groups G03B31/00 - G03B39/00; Apparatus therefor using non-intermittently running film
    • G03B41/04—Special techniques not covered by groups G03B31/00 - G03B39/00; Apparatus therefor using non-intermittently running film with optical compensator
    • G03B41/08—Special techniques not covered by groups G03B31/00 - G03B39/00; Apparatus therefor using non-intermittently running film with optical compensator with rotating transmitting member

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Lenses (AREA)

Description

Vorrichtung zur Projektion von Bildern mit optischem Ausgleich Die Erfindung g-elit von einer Vorrichtung zur Projektion von Bildern mit optischem Ausgleich mittels eines Vielkantpristnas oder einer Vielkantspiegeltrommel aus und bezweckt eine Vergrößerung der Lichtausbc-titccierartiger Vorrichtungen.Device for projecting images with optical compensation Invention g-elit of a device for the projection of images with optical Compensation by means of a polygonal pristna or a polygonal mirror drum made of and aims to increase the light output of titccier-type devices.

Bei den bekannten l'rojcktoreii der ange -ebenen Art haben die- .@usglciclisllüclicn der Vielkantprismen oder die Spiegelllächen der Spiegeltrommeln eine Gröl-;e, deren Abnic-ssungen der (rrölae des zu projizierenden Filmbildes entsprechen. Dadurch werden in Richtung der Drehachse des Prismas mir Strahlenbündel in Breite des Bildfensters ausgenutzt. Die übrigen von der Beleuchtungsoptik koinnienden Strahlen werden von den Seitenflächen des Prismas abgeschirmt. Zur Beseitigung dieses Man-els ist geni;il., der Erfindun- die parallel zur Drehachse gemessene L:inge der Ausgleichsflächen des Prismas doppelt so gröl oder größer Nils die Höhe derAus5leichsflächen, und das Projektionsobjektiv hat eine so große üffnung, da(,) es alle aus dein Pri@nia austretenden Strahlen erfabt. Auf diese "'eise werden auch noch durch die Schicht des Films zerstreute Lichtstrahlen, deren Bedeutung für die Helligkeit des Bildes jedoch geringer ist, als die der gerichteten laeleticlittingsstr2ililen in größerem Maße als sonst ausgenutzt. Die Erfindung ist in der lc-ichnung bc-ispielsweise erläutert. :\bh. i zeigt ein #,'icllc<uitprisinä mit such: Kanten, dessen Ausgleichsflache t ein lüslii r übliches dem Filmbild entsprechendes @eitc@i-@erh:iltnis L zu H ritifnc-ist. -a ist die 7 aclise des Prismas.In the known l'rojcktoreii of the type mentioned, the. @ Usglciclisllüclicn of the polygonal prisms or the mirror surfaces of the mirror drums have a size whose dimensions correspond to the (rrölae of the film image to be projected Prism with a bundle of rays in the width of the picture window. The remaining rays from the illumination optics are shielded by the side surfaces of the prism The prism is twice as large or larger than the height of the compensating surfaces, and the projection lens has such a large opening that it detects all the rays emerging from your prism. In this way, light rays are also scattered through the layer of the film whose importance for the brightness of the picture is less than that of the directed laeleticlittingsstr2ililen in greater Dimensions than otherwise used. The invention is explained in the example of the LC-I. :\bra. i shows a #, 'icllc <uitprisinä with such: edges, whose compensation surface t is a lüslii r usual @ eitc @ i- @ received: iltnis L to H ritifnc-corresponding to the film image. -a is the 7 aclise of the prism.

Abb. 2 zeigt ein uni die Achse 2 drehl-)aocs Prisma nach der I_rlindung. Die L:ingi- I-einer .#,usglciclisil:iche i ist mehr als Chippult so grofi wie die - Höhe Il. Dadurch ergibt sich bei Vei-tt-e-ndung eines Objektivs mit hinreichend grolacr C)linung eine entsprechend der Verlängerung der Aus gleicli11:ü-lii \i.i-"&riil3erte Liclit;uisntitztnig.Fig. 2 shows a uni the axis 2 rotating) aocs prism after the I_rlinden. The L: ingi- I-a. #, Usglciclisil: iche i is more than Chippult as large as the -height Il. In this way, if an objective lens with a sufficiently large line is used, the result is an equilibrium corresponding to the lengthening of the equilibrium.

Claims (1)

1'ATENTANJPRUC11: Vorrichtung zur Projektion von Bildern mit optischem Ausgleich mittels eines Vii lkantprismas oder einer @ielk@ntspiegeltroinnicl, dadurch gekennzeichnet, dal@ die parallel zur Drehachse gemessene Länge t L , der Ausgleichsflächen des l'risiri.ts doppelt so groß oder gröl:>er ist als die 1-Iölie ( 1I , der Aus-lcichstl:ichcn und cLs I'rojektionsi@bjel>tiv eine so grolle i ilinun-g hat, dal.) es alle aus dem Prisma @aistretenden Strahlen erfaßt.1'ATENTANJPRUC11: Device for the projection of images with optical compensation by means of a square prism or a @ ielk @ ntspiegelroinnicl, characterized in that @ the length t L, measured parallel to the axis of rotation, of the compensation surfaces of the risiri.t is twice as large or larger :> It is as the 1-oil (1I , the Aus-lcichstl: ichcn and cLs I'rojektionsi @ bjel> tiv has such a great ilinun-g that.) it captures all rays emerging from the prism.
DEK149803D 1938-03-04 1938-03-04 Device for the projection of images with optical compensation Expired DE737158C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DEK149803D DE737158C (en) 1938-03-04 1938-03-04 Device for the projection of images with optical compensation

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEK149803D DE737158C (en) 1938-03-04 1938-03-04 Device for the projection of images with optical compensation

Publications (1)

Publication Number Publication Date
DE737158C true DE737158C (en) 1943-07-07

Family

ID=7251991

Family Applications (1)

Application Number Title Priority Date Filing Date
DEK149803D Expired DE737158C (en) 1938-03-04 1938-03-04 Device for the projection of images with optical compensation

Country Status (1)

Country Link
DE (1) DE737158C (en)

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