DE326162C - Headlights with a light source lying outside the focal length of the reflector - Google Patents

Headlights with a light source lying outside the focal length of the reflector

Info

Publication number
DE326162C
DE326162C DE1913326162D DE326162DD DE326162C DE 326162 C DE326162 C DE 326162C DE 1913326162 D DE1913326162 D DE 1913326162D DE 326162D D DE326162D D DE 326162DD DE 326162 C DE326162 C DE 326162C
Authority
DE
Germany
Prior art keywords
reflector
light source
focal length
headlights
lying outside
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
DE1913326162D
Other languages
German (de)
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.)
WALTER CECIL PETTINGILL
Original Assignee
WALTER CECIL PETTINGILL
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 WALTER CECIL PETTINGILL filed Critical WALTER CECIL PETTINGILL
Application granted granted Critical
Publication of DE326162C publication Critical patent/DE326162C/en
Expired legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S13/00—Non-electric lighting devices or systems employing a point-like light source; Non-electric lighting devices or systems employing a light source of unspecified shape
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S41/00—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps
    • F21S41/20—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by refractors, transparent cover plates, light guides or filters
    • F21S41/25—Projection lenses
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S41/00—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps
    • F21S41/30—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by reflectors
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S41/00—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps
    • F21S41/40—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by screens, non-reflecting members, light-shielding members or fixed shades
    • F21S41/43—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by screens, non-reflecting members, light-shielding members or fixed shades characterised by the shape thereof
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S41/00—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps
    • F21S41/30—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by reflectors
    • F21S41/32—Optical layout thereof
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21W—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO USES OR APPLICATIONS OF LIGHTING DEVICES OR SYSTEMS
    • F21W2107/00—Use or application of lighting devices on or in particular types of vehicles
    • F21W2107/10—Use or application of lighting devices on or in particular types of vehicles for land vehicles

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Non-Portable Lighting Devices Or Systems Thereof (AREA)

Description

Scheinwerfer mit einer außerhalb der Brennweite des Reflektors liegenden Lichtquelle. 15ie Erfindung bezieht -sich auf eine Vorrichtung zur Verhinderung des Blenders für eine mit Reflektoren oder mit Linsen oder mit Reflektoren und Linsen versehene Lampe. Der Zweck dier Erfindung besteht darin, eine das Blenden: verhindernde- Vorrichtung zu schaffen, welche äußerst einfach ist. und das von der Lampe ausgesandte nutzbare Licht nicht wesentlich vermindert. Die Einrichtung gemäß der Erfindung ist besonders zweck-. mäßig für Lampen der Motorfahrzeuge. Diese -Einrichtung kann .auch für irgendwelche andere geeignete Zwecke Verwendung finden. Es sollen jene Strählen der Lichtquelle, welche nach oben hin reflektiertwerden, abgeschnitten werden. Qemäß der Erfindung wird dies dadurch erreicht, daß die außerhalb der Brennweite befindliche Lichtquelle durch eine in Brennweiteabstand liegende Blende, deren wagerechte Abdeckkante durch den Brennpunkt -geht, nach unten hin gedeckt wird.Headlights with one lying outside the focal length of the reflector Light source. The invention relates to a device for prevention of the blender for one with reflectors or with lenses or with reflectors and lenses provided lamp. The purpose of the invention is to provide a glare-preventing To create device which is extremely simple. and that sent out by the lamp usable light is not significantly reduced. The device according to the invention is particularly purposeful. moderate for lamps of motor vehicles. This facility can . can also be used for any other suitable purpose. Let those Beams of the light source, which are reflected upwards, cut off will. According to the invention, this is achieved in that the outside of the focal length located light source through an aperture at a focal distance, its horizontal Covering edge goes through the focal point, is covered downwards.

Zwei Ausführungsbeispiele der Erfindung sind auf der Zeichnung veranschaulicht.Two embodiments of the invention are illustrated in the drawing.

Fig. i zeigt die Anwendung.der Erfindung auf .eine Lampe, welche mit einem Reflektor versehen ist.Fig. I shows the application of the invention to .a lamp which is equipped with is provided with a reflector.

Fig. 2 -ist ein Schirm bzw. eine Blende für die Lampe.Fig. 2 is a screen for the lamp.

Fig. 3 zeigt eine Ausführungsform der Erfindung ohne Reflektor mit einer vorderen Linse. Bei der Ausführungsform gemäß der Fig. @i, in welcher die Anwendung der Vorrichtung nach der Erfindung auf eine Lampe veranschaulicht ist; welche einen lronkaven, an der Rückseite der Lichtquelle angeordneten Reflektor besitzt, ist die Flamme a bzw. die Lichtquel1e - unmittelbar außerhalb des Brennpunktes b _dies Reflektors c der Lampe d angeordnet. In der Brennebene und unmittelbar hinter der Lichtquelle a ist ein kleiner Schirme mit einem oberen wagerechten Rand f aus Metall oder irgendeinem anderen undurchsichtigen Material angebracht. Zweckmäßig besitzt dieser Schirm eine halbkreisförmige Gestalt. Der Rand f darf nicht tiefer liegen als die optische Achse des Reflektors c. Die Dimensionen dieser Blende sind derart, daß dieselbe das Vorbeigehen der Strahlen unterhalb es geraden Randes f verhindert. Durch -diese Einrichtung werden die oberen Strahlen, des Lichtkegels, welcher durch die Lampe ausgeworfen wird, scharf abgeschnitten, oluie die Stärke der übrigen Strahlen zu beeinträchtigen. -Erzielt wird dies dadurch, daß die Fläche des Schirmes .im Verhältnis zu der Fläche des Reflektors äußerst klein, ist.Fig. 3 shows an embodiment of the invention without a reflector a front lens. In the embodiment according to FIG. @I, in which the Application of the device according to the invention to a lamp is illustrated; which has an arcuate reflector arranged on the back of the light source possesses, the flame is a or the light source - immediately outside of the focal point b _dies reflector c of lamp d arranged. In the focal plane and immediately behind the light source a is a small screen with an upper horizontal edge f Metal or any other opaque material attached. Appropriate this screen has a semicircular shape. The edge f must not be deeper lie as the optical axis of the reflector c. The dimensions of this aperture are in such a way that the same prevents the rays from passing below the straight edge f prevented. Through this device the upper rays, the cone of light, which is ejected by the lamp, cut off sharply, oluie the strength the rest of the rays. -This is achieved by having the area of the screen is extremely small in relation to the area of the reflector.

In Fig. 3 ist eine Ausführungsform .der Erfindung veranschaulicht, bei - welcher .die Lampe ,keinen Reflektor besitzt, sondern mit einer vörderen Linse versehen isst. Durch den Schirm e1 wird -dieselbe Wirkung erzielt wie in der Ausführungsform nach Fig. i.In Fig. 3 an embodiment of the invention is illustrated. with - which .the lamp, has no reflector, but with a front lens provided eats. The same effect as in the embodiment is achieved by the screen e1 according to Fig. i.

Claims (1)

PATENTANSPRUCH: Scheinwerfer mit einer außerhalb der Brennweite desReflektors liegenden Lichtquelle, gekennzeichnet durch eine durch den Brennpunkt gehende Blende, welche .denjenigen Teil der Strahlen abdeckt, -der ohne die Blende den Scheinwerfer in Richtung nach oben verlassen würde. Claim to the patent: Headlight with a light source lying outside the focal length of the reflector, characterized by a diaphragm going through the focal point, which covers that part of the rays -which would leave the headlight in an upward direction without the diaphragm.
DE1913326162D 1913-05-29 1913-05-29 Headlights with a light source lying outside the focal length of the reflector Expired DE326162C (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE326162T 1913-05-29

Publications (1)

Publication Number Publication Date
DE326162C true DE326162C (en) 1920-09-23

Family

ID=6183634

Family Applications (1)

Application Number Title Priority Date Filing Date
DE1913326162D Expired DE326162C (en) 1913-05-29 1913-05-29 Headlights with a light source lying outside the focal length of the reflector

Country Status (1)

Country Link
DE (1) DE326162C (en)

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