DE731831C - Lighting device for projector - Google Patents

Lighting device for projector

Info

Publication number
DE731831C
DE731831C DEL102200D DEL0102200D DE731831C DE 731831 C DE731831 C DE 731831C DE L102200 D DEL102200 D DE L102200D DE L0102200 D DEL0102200 D DE L0102200D DE 731831 C DE731831 C DE 731831C
Authority
DE
Germany
Prior art keywords
mirror
shadow
lighting device
piston
bulb
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
DEL102200D
Other languages
German (de)
Inventor
Erwin May
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.)
Ernst Leitz Wetzlar GmbH
Original Assignee
Ernst Leitz Wetzlar 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 Ernst Leitz Wetzlar GmbH filed Critical Ernst Leitz Wetzlar GmbH
Priority to DEL102200D priority Critical patent/DE731831C/en
Application granted granted Critical
Publication of DE731831C publication Critical patent/DE731831C/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
    • G03B21/00—Projectors or projection-type viewers; Accessories therefor
    • G03B21/14—Details
    • G03B21/20—Lamp housings
    • G03B21/2006—Lamp housings characterised by the light source
    • G03B21/202—Incandescent light sources

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Arrangements Of Lighting Devices For Vehicle Interiors, Mounting And Supporting Thereof, Circuits Therefore (AREA)

Description

Beleuchtungseinrichtung für Bildwerfer ' Zus<<tz zum Patent 717455 Gegenstand des Patents 717455 ist eine Beleuchtungsvorrichtung für Bildwerfer mit einem Rückspiegel und einem zwischen Lichtquelle und Bildfenster angeordneten Spiegelsystem, dessen einer Teil im Schatten der Lichtquelle steht und Licht von dem seitlich j angeordneten anderen Teil des Spiegelsystems erhält, bei der bei Verwendung einer Glühlampe als Lichtquelle die seitlichen Spiegel als Hohlspiegelstreifen ausgebildet und außerhalb des vom Rückspiegel ausgehenden Strahlenkegels so angeordnet sind, da.ß sie nur von der Lichtquelle unmittelbar ausgehende Strahlen aufnehmen.Illumination device for projectors' addition to the patent 717455 The subject of patent 717455 is a lighting device for projectors with a rearview mirror and one arranged between the light source and the picture window Mirror system, part of which is in the shadow of the light source and light from the other part of the mirror system arranged laterally j, in which at Using an incandescent lamp as a light source, the side mirrors as concave mirror strips formed and arranged outside of the beam cone emanating from the rearview mirror that they only absorb rays emanating directly from the light source.

Nach der Erfindung wird die Beleuchtungseinrichtung nach dem Hauptpatent dahin geändert, daß im Lichtquellenschatten nur ein Spiegel von der Breite des Kolbenschattens und seitlich hiervon außerhalb des vom Rückspiegel ausgehenden Strahlenkegels nur ein so ausgebildeter Hohlspiegelstreifen angeordnet ist, daß das von ihm aufgenommene Strahlenbündel nach Reflexion den im Kolbenschatten stehenden Spiegel voll ausfüllt. Hierdurch wird im Vergleich mit der Einrichtung nach dem Hauptpatent, bei der die 'Spiegel paarweise symmetrisch zur optischen Achse angeordnet sind, der Vorteil erreicht, daß nur ein Spiegelstreifen anzufertigen und beim Zusammenbau nur ein Spiegelpaar zwischen Lichtquelle und Bildfenster ztt justieren ist.According to the invention, the lighting device according to the main patent changed so that in the shadow of the light source only a mirror the width of the shadow of the bulb and to the side of this outside of the cone of rays emanating from the rearview mirror only a concave mirror strip designed in such a way is arranged that the one received by it After reflection, the bundle of rays completely fills the mirror in the shadow of the bulb. This is in comparison with the device according to the main patent, in which the 'Mirrors are arranged in pairs symmetrically to the optical axis, the advantage achieved that only one mirror strip to be made and only one when assembling The pair of mirrors between the light source and the picture window is ztt adjust.

In der Zeichnung ist die Erfindung in einem Ausführungsbeispiel, und zwar in einem waagerechten Schnitt, dargestellt.In the drawing, the invention is in one embodiment, and although shown in a horizontal section.

Mittels des Hohlspiegels t werden"die Wendel 2 der Glühlampe 3 in das Filmfenster abgebildet. Seitlich des Strahlenkegels 5 ist ein Hohlspiegelstreifen 6 angeordnet, der zusammen mit dem im Kolbenschatten liegenden Planspiegel; ein unmittelbar von der Glühlampe ausgehendes Strahlenbündel in das Filmfenster lenkt, wodurch der Kolbenschatten der Glühlampe aufgehellt wird.By means of the concave mirror t, the filament 2 of the incandescent lamp 3 in pictured the movie window. To the side of the cone of rays 5 is a concave mirror strip 6 arranged, together with the plane mirror lying in the piston shadow; a directs the beam of rays emanating directly from the incandescent lamp into the film window, whereby the bulb shadow of the light bulb is brightened.

Claims (1)

PATENTANSPRUCH: Änderung der Beleuchtungseinrichtung für Bildwerfer nach Pät:ent ; r; .155, dadurch gekennzeichnet, daß im Schatten des Kolbens der Glühlampe nur ein Spiegel von der Breite des Kolbenschattens vorgesehen und außerhalb des vom Rückspiegel ausgehenden Strahlenkegels nur ein so ausgebildeter Hohlspiegelstreifen angeordnet ist, daß das von ihm aufgenomtnene Strahlenbündel nach Reflexion den im Kolbenschatten stehenden Spiegel voll ausfüllt.PATENT CLAIM: Modification of the lighting system for projectors after Pät: ent; r; .155, characterized in that in the shadow of the piston Incandescent lamp provided only one mirror the width of the bulb shadow and outside of the beam cone emanating from the rearview mirror only a concave mirror strip formed in this way is arranged that the ray bundle recorded by him after reflection completely fills the mirror standing in the piston shadow.
DEL102200D 1940-10-29 1940-10-29 Lighting device for projector Expired DE731831C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DEL102200D DE731831C (en) 1940-10-29 1940-10-29 Lighting device for projector

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEL102200D DE731831C (en) 1940-10-29 1940-10-29 Lighting device for projector

Publications (1)

Publication Number Publication Date
DE731831C true DE731831C (en) 1943-02-15

Family

ID=7289717

Family Applications (1)

Application Number Title Priority Date Filing Date
DEL102200D Expired DE731831C (en) 1940-10-29 1940-10-29 Lighting device for projector

Country Status (1)

Country Link
DE (1) DE731831C (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3229579A (en) * 1961-12-27 1966-01-18 Aerojet General Co Solar energy collector
DE2461918A1 (en) * 1974-01-11 1975-07-17 Faulhaber Fritz Motor car spot lamp - with narrow angle beam of high intensity and gas discharge light source

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3229579A (en) * 1961-12-27 1966-01-18 Aerojet General Co Solar energy collector
DE2461918A1 (en) * 1974-01-11 1975-07-17 Faulhaber Fritz Motor car spot lamp - with narrow angle beam of high intensity and gas discharge light source

Similar Documents

Publication Publication Date Title
DE69305654T2 (en) LIGHTING SYSTEM FOR SPOTLIGHTS, HEADLIGHTS AND MAGNIFICATION DEVICES
GB1208960A (en) Improved lighting system
DE731831C (en) Lighting device for projector
US3571649A (en) Optical filtration for underwater viewing, photography, and the like
US2831104A (en) Photographic illuminating means
DE2135698A1 (en) Optical system especially projector
DE2936054A1 (en) WORKPLACE LIGHT
DE554927C (en) Illumination mirror arrangement
DE598643C (en) Lighting arrangement for zoom cameras
DE1589151A1 (en) Mirrored incandescent lamp with double bulb and halogen gas filling
DE305404C (en)
DE4111299A1 (en) LIGHT WITH MIRROR OPTICS
DE712070C (en) Episcopic projection lamp with a frame-shaped hollow glass body
DE679836C (en) Signal lantern
DE379269C (en) Mirror lamp for cinema projection
DE637544C (en) Basket-shaped dimming device composed of slats for electric headlights
DE503675C (en) Device for slide projection with cinema lamp spotlights
SU451038A1 (en) Lighting projection system
DE668111C (en) Runway light, especially for electric light sources
DE1247484C2 (en) ARRANGEMENT FOR IMPROVING LIGHT EFFICIENCY WITH TEMPERATURE LAMPS
DE329199C (en) Projection lamp
DE722762C (en) Luminaire with alternately switchable main and secondary light source
DE2529416C2 (en) Electric light bulb with a cap-shaped mirror coating
DE349296C (en) Projection device
DE573152C (en) Cooling vessel, especially for projectors