DE283441C - - Google Patents
Info
- Publication number
- DE283441C DE283441C DENDAT283441D DE283441DA DE283441C DE 283441 C DE283441 C DE 283441C DE NDAT283441 D DENDAT283441 D DE NDAT283441D DE 283441D A DE283441D A DE 283441DA DE 283441 C DE283441 C DE 283441C
- Authority
- DE
- Germany
- Prior art keywords
- prism
- light
- longitudinal axis
- screen
- lamp
- 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
Links
- 239000011521 glass Substances 0.000 claims description 2
- 230000000694 effects Effects 0.000 description 1
- 230000000149 penetrating Effects 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
- F21V5/00—Refractors for light sources
- F21V5/02—Refractors for light sources of prismatic shape
-
- A—HUMAN NECESSITIES
- A45—HAND OR TRAVELLING ARTICLES
- A45D—HAIRDRESSING OR SHAVING EQUIPMENT; EQUIPMENT FOR COSMETICS OR COSMETIC TREATMENTS, e.g. FOR MANICURING OR PEDICURING
- A45D42/00—Hand, pocket, or shaving mirrors
- A45D42/08—Shaving mirrors
- A45D42/10—Shaving mirrors illuminated
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21L—LIGHTING DEVICES OR SYSTEMS THEREOF, BEING PORTABLE OR SPECIALLY ADAPTED FOR TRANSPORTATION
- F21L2/00—Systems of electric lighting devices
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21L—LIGHTING DEVICES OR SYSTEMS THEREOF, BEING PORTABLE OR SPECIALLY ADAPTED FOR TRANSPORTATION
- F21L4/00—Electric lighting devices with self-contained electric batteries or cells
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
- F21V17/00—Fastening of component parts of lighting devices, e.g. shades, globes, refractors, reflectors, filters, screens, grids or protective cages
- F21V17/02—Fastening of component parts of lighting devices, e.g. shades, globes, refractors, reflectors, filters, screens, grids or protective cages with provision for adjustment
Description
KAISERLICHESIMPERIAL
PATENTAMT.PATENT OFFICE.
PATENTSCHRIFTPATENT LETTERING
-■ ΛΙ 283441 KLASSE Ab. GRUPPE- ■ ΛΙ 283441 CLASS from. GROUP
Elektrische Taschenlampe. Patentiert im Deutschen Reiche vom 3. April 1913 ab.Electric flashlight. Patented in the German Empire on April 3, 1913.
Bei den elektrischen Taschenlampen allbekannter Form liegt die Achse des austretenden Lichtstrahlenbündels in der Längsachse des Lampengehäuses. War es für besondere Zwecke notwendig, die Strahlen senkrecht zur Längsachse der Lampe austreten zu lassen, so war eine entsprechend andere Lage der Glühlampe und des Reflektors notwendig, die zu Raum beanspruchenden KonstruktionenIn the case of electric flashlights of well-known shape, the axis of the exiting is located Light beam in the longitudinal axis of the lamp housing. Was it necessary for special purposes to keep the rays perpendicular to the To let the longitudinal axis of the lamp emerge, so was a correspondingly different position of the Incandescent lamp and reflector necessary to space-consuming constructions
ίο führte, so daß die erforderlichen Kennzeichen einer Taschenlampe, nämlich Handlichkeit und leichte Bergbarkeit, nicht mehr vorhanden waren. War die Forderung zu erfüllen, daß die Lichtstrahlen nach Bedarf in der Längsachse oder senkrecht dazu austreten sollten, so traten diese Mängel noch stärker hervor, und eine ganze Anzahl von Hilfsgliedern war notwendig, um Glühlampe und Reflektor aus einer Lage in eine andere zu bringen. Dieseίο led so that the required license plate a flashlight, namely handiness and easy recovery, no longer available was. Was the requirement to meet that the light rays as required in the longitudinal axis or should emerge perpendicular to it, these defects became even more pronounced, and quite a number of auxiliary links were necessary to get the bulb and reflector out to bring one situation into another. These
Übelstände werden nach der vorliegenden Erfindung dadurch vermieden, daß ein an sich bekanntes Prinzip, nämlich die totale Reflexion paralleler, in ein Prisma eindringender Lichtstrahlen zum Ablenken der letzteren verwendet wird.Defects are avoided according to the present invention that a per se well-known principle, namely the total reflection of parallel, penetrating into a prism Light rays are used to deflect the latter.
Das Austreten störender seitlicher Lichtstrahlen wird hierdurch vermieden; bei Anordnung eines Spiegels würde dies nur durch einen im Verhältnis zur Lampe großen Lichtkanal zu erreichen sein. Endlich dient das Prisma sowohl als Ablenkvorrichtung wie auch als Lichtzerstreuer.This avoids the emergence of disruptive lateral light beams; upon arrangement of a mirror, this would only be achieved through a light channel that is large in relation to the lamp to be reached. Finally the prism serves as both a deflector and a light diffuser.
An der Taschenlampenhülse c mit Glühlampe b (Fig. ι bis 3) wird ein Prisma a so angeordnet, daß es aus der Stellung der Fig. ι in die Stellung der Fig. 3 und umgekehrt gebracht werden kann. In Fig. 3 bleibt die mittlere Richtung der von b ausgehenden Lichtstrahlen in der Längsachse des Gehäuses parallel zur Pfeilrichtung k im wesentlichen bestehen. In Fig. 1 werden die von b parallel zur Längsachse gerichteten Strahlen absolut reflektiert und verlassen das Prisma parallel zur Pfeilrichtung i, treten also senkrecht zur ursprünglichen Richtung aus. Die schräg in das Prisma fallenden Lichtstrahlen stören die Wirkung nicht. Die aus der Hypothenusenfläche austretenden Strahlen können, wenn nötig, durch einen'Schirm I abgeblendet werden. A prism a is arranged on the flashlight sleeve c with incandescent lamp b (FIGS. 1 to 3) so that it can be moved from the position of FIG. 1 to the position of FIG. 3 and vice versa. In FIG. 3, the mean direction of the light rays emanating from b remains essentially unchanged in the longitudinal axis of the housing parallel to the direction of the arrow k. In FIG. 1, the rays directed from b parallel to the longitudinal axis are absolutely reflected and leave the prism parallel to the direction of the arrow i, that is to say exit perpendicular to the original direction. The light rays falling obliquely into the prism do not disturb the effect. The rays emerging from the surface of the hypotenuse can, if necessary, be blocked by a screen I.
Das Prisma α nach Fig. 4, 5 und 6 hat an seinen Stirnflächen Beläge f. Diese und das Prisma werden von Fassungen d umspannt. In den Belägen f sind Vertiefungen j> und h, in welche die Stifte g je nach der Prismenstellung durch die federnden Lappen 0 eingedrückt werden. Infolge der dreieckigen Ausschnitte e der Fassungen d, innerhalb derer sich die beiden Stifte g befinden, kann das Prisma vom Gehäuse nicht getrennt werden. Die Hohlräume -p, h und β können auch unmittelbar im Glasprisma angeordnet sein. Der Schirm / (Fig. 1, 2, 5 und 6) ist sowohl an das Prisma wie an die Zunge m mittels zweier Scharniere angelenkt. Die Zunge m gleitet in der Führung n. Der Schirm ist zwangläufig mit dem Prisma verbunden. Wird das Prisma in eine andere Stellung gebracht, so folgt auchThe prism α according to FIGS. 4, 5 and 6 has coverings f on its end faces. These and the prism are encompassed by mountings d. In the coverings f there are depressions j> and h, into which the pins g are pressed by the resilient tabs 0 depending on the position of the prism. As a result of the triangular cutouts e of the sockets d, within which the two pins g are located, the prism cannot be separated from the housing. The cavities -p, h and β can also be arranged directly in the glass prism. The screen / (Fig. 1, 2, 5 and 6) is articulated both to the prism and to the tongue m by means of two hinges. The tongue m slides in the guide n. The screen is inevitably connected to the prism. If the prism is brought into another position, it also follows
Claims (1)
Publications (1)
Publication Number | Publication Date |
---|---|
DE283441C true DE283441C (en) | 1900-01-01 |
Family
ID=539005
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DENDAT283441D Expired DE283441C (en) |
Country Status (1)
Country | Link |
---|---|
DE (1) | DE283441C (en) |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2850448A1 (en) * | 2003-01-29 | 2004-07-30 | Zedel | Portable light source using electro-luminescent diodes, uses screen with integral Fresnel lenses which can be moved over front of diode to adjust spread of beam from diode |
US9285105B2 (en) | 2012-05-08 | 2016-03-15 | Streamlight, Inc. | Head light having a rotatable face cap with plural lenses |
US11639789B2 (en) | 2021-01-13 | 2023-05-02 | Streamlight, Inc. | Portable light and keyed rechargeable USB battery |
USD999332S1 (en) | 2018-10-09 | 2023-09-19 | Streamlight, Inc. | Rail mountable gun light with rotationally keyed mount assembly |
-
0
- DE DENDAT283441D patent/DE283441C/de not_active Expired
Cited By (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2850448A1 (en) * | 2003-01-29 | 2004-07-30 | Zedel | Portable light source using electro-luminescent diodes, uses screen with integral Fresnel lenses which can be moved over front of diode to adjust spread of beam from diode |
WO2004070268A3 (en) * | 2003-01-29 | 2004-09-16 | Zedel | Portable lighting device with a light emitting diode |
US7192165B2 (en) | 2003-01-29 | 2007-03-20 | Zedel | Portable lighting device with light-emitting diode |
US7226190B2 (en) | 2003-01-29 | 2007-06-05 | Zedel | Portable lighting device with light-emitting diode |
US9285105B2 (en) | 2012-05-08 | 2016-03-15 | Streamlight, Inc. | Head light having a rotatable face cap with plural lenses |
US9605836B2 (en) | 2012-05-08 | 2017-03-28 | Streamlight, Inc. | Portable light having a housing including a lock |
USD999332S1 (en) | 2018-10-09 | 2023-09-19 | Streamlight, Inc. | Rail mountable gun light with rotationally keyed mount assembly |
US11639789B2 (en) | 2021-01-13 | 2023-05-02 | Streamlight, Inc. | Portable light and keyed rechargeable USB battery |
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