CH250917A - Device for mounting removable accessories on a photographic lens. - Google Patents
Device for mounting removable accessories on a photographic lens.Info
- Publication number
- CH250917A CH250917A CH250917DA CH250917A CH 250917 A CH250917 A CH 250917A CH 250917D A CH250917D A CH 250917DA CH 250917 A CH250917 A CH 250917A
- Authority
- CH
- Switzerland
- Prior art keywords
- accessory
- lens
- hand
- photographic lens
- ring
- Prior art date
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
- G03B17/00—Details of cameras or camera bodies; Accessories therefor
- G03B17/02—Bodies
- G03B17/12—Bodies with means for supporting objectives, supplementary lenses, filters, masks, or turrets
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Lens Barrels (AREA)
Description
Dispositif de montage d'accessoires amovibles sur un objectif photographique. L'objet de la présente invention est un dispositif de montage d'accessoires amovibles sur un objectif photographique. Ce dispositif est caractérisé par une bague présentant, d'une part, une partie destinée à s'adapter sur l'objectif et, d'autre part,
un manchon à baïonnette destiné à maintenir au moins. un accessoire devant l'objectif.
Le dessin ci-annexé représente, à titre d'exemple, une forme d'exécution du dispo sitif faisant l'objet de l'invention.
La fig.1 en est une coupe -axiale et la fig. 2 une vue en bout. Les fig. â, 4 montrent des détails.
Dans la forme d'exécution représentée, le dispositif -comprend une bague 1 qui s'adapte, d'une part, par vissage, sur l'embouchure 2 d'un objectif photographique, et qui présente, d'autre part, un manchon à baïonnette com prenant trois encoches 3 à deux crans, dispo sées à 120' l'une de l'autre:.
Un anneau de ser rage 4 porte trois ergots intérieurs: 5 qui s'en- ga.gent dans les crans des encoches intérieures du manchon à baïonnette et dépassent légère ment à l'intérieur .de ce manchon, de façon à pouvoir retenir un accessoire 6 en position sur l'objectif. Un second anneau de serrage 4a analogue comportant les ergots 5a maintient un second accessoire 6a.
Pour protéger les accessoires: 6 et 6a, on les munit de bagues élastiques de protec tion 7<I>et 7a,</I> fendues, transversalement, dont le pourtour intérieur correspond au pourtour du bord de l'accessoire. En fig. 4, des bagues de diverses sections sont représentées -en coupe transversale (7, 7a, 7b et 7c).
Le mode -d'utilisation de ce dispositif est le suivant: On visse la bague 1 sur l'embouchure 2 de l'objectif, puis on place l'aceessoire voulu 6 devant l'objectif -et ou le bloque en position en le serrant au moyen de l'anneau 4 dont les ergots 5 se coincent dans le fond des encoches. Pour enlever l'accessoire, il suffit de retirer l'anneau et de pencher l'appareil d'une main pour faire tomber l'accessoire dans l'autre main.
On peut monter de cette façon des bon- nettes d'approche ou parasoleil, des filtres, etc. Si les accessoires présentent eux-mêmes des ergots permettant leur adaptation sur le manchon à baïonnette de la bague 1, il est évidemment inutile - d'employer des anneaux
Device for mounting removable accessories on a photographic lens. The object of the present invention is a device for mounting removable accessories on a photographic lens. This device is characterized by a ring having, on the one hand, a part intended to fit on the objective and, on the other hand,
a bayonet sleeve intended to hold at least. an accessory in front of the lens.
The accompanying drawing represents, by way of example, an embodiment of the device forming the subject of the invention.
Fig.1 is an axial section and fig. 2 an end view. Figs. â, 4 show details.
In the embodiment shown, the device -comprises a ring 1 which fits, on the one hand, by screwing, on the mouth 2 of a photographic lens, and which has, on the other hand, a sleeve with bayonet comprising three notches 3 with two notches, arranged 120 'from each other :.
A clamping ring 4 has three interior pins: 5 which engage in the notches of the interior notches of the bayonet sleeve and protrude slightly inside this sleeve, so as to be able to retain an accessory 6 in position on the lens. A second similar clamping ring 4a comprising the lugs 5a maintains a second accessory 6a.
To protect the accessories: 6 and 6a, they are fitted with elastic protective rings 7 <I> and 7a, </I> slit transversely, the inner perimeter of which corresponds to the perimeter of the edge of the accessory. In fig. 4, rings of various sections are shown in cross section (7, 7a, 7b and 7c).
The mode of use of this device is as follows: The ring 1 is screwed onto the mouthpiece 2 of the lens, then the desired accessory 6 is placed in front of the lens -and or lock it in position by tightening it. by means of the ring 4, the pins 5 of which are wedged in the bottom of the notches. To remove the accessory, simply remove the ring and tilt the device with one hand to drop the accessory into the other hand.
In this way, approach lenses or lens hoods, filters, etc. can be mounted. If the accessories themselves have lugs allowing them to be adapted to the bayonet sleeve of the ring 1, it is obviously unnecessary - to use rings
Claims (1)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CH250917T | 1945-11-10 |
Publications (1)
Publication Number | Publication Date |
---|---|
CH250917A true CH250917A (en) | 1947-09-30 |
Family
ID=4468485
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CH250917D CH250917A (en) | 1945-11-10 | 1945-11-10 | Device for mounting removable accessories on a photographic lens. |
Country Status (1)
Country | Link |
---|---|
CH (1) | CH250917A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1108469B (en) * | 1959-02-13 | 1961-06-08 | Jenoptik Jena Gmbh | Frame for camera lenses |
DE1122738B (en) * | 1959-09-05 | 1962-01-25 | Hensoldt & Soehne Optik | Lens mount |
-
1945
- 1945-11-10 CH CH250917D patent/CH250917A/en unknown
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1108469B (en) * | 1959-02-13 | 1961-06-08 | Jenoptik Jena Gmbh | Frame for camera lenses |
DE1122738B (en) * | 1959-09-05 | 1962-01-25 | Hensoldt & Soehne Optik | Lens mount |
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