DE345573C - - Google Patents
Info
- Publication number
- DE345573C DE345573C DENDAT345573D DE345573DA DE345573C DE 345573 C DE345573 C DE 345573C DE NDAT345573 D DENDAT345573 D DE NDAT345573D DE 345573D A DE345573D A DE 345573DA DE 345573 C DE345573 C DE 345573C
- Authority
- DE
- Germany
- Prior art keywords
- camera
- image plane
- axis
- optical axis
- lens
- 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.)
- Active
Links
- 230000003287 optical Effects 0.000 claims description 6
- 238000010276 construction Methods 0.000 description 1
- 230000002349 favourable Effects 0.000 description 1
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
- G03B17/04—Bodies collapsible, foldable or extensible, e.g. book type
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Lenses (AREA)
Description
Die Erfindung betrifft eine photographische Kamera und bezweckt bei geringster Kameratiefe eine volle Ausnutzung des ganzen Bildwinkels eines kurzbrennweitigen Objektivs. Dies ist gemäß der Erfindung dadurch erreicht, daß die optische Achse des zwischen zwei spiegelnden Elementen liegenden Objektivs zur Kameraachse und dieser parallel liegenden Bildebene geneigt ist.The invention relates to a photographic one Camera and aims to make full use of the entire angle of view with the lowest camera depth a short focal length lens. According to the invention, this is achieved by that the optical axis of the lens lying between two reflective elements is inclined to the camera axis and this parallel image plane.
ίο · Kameras, bei denen zur Verkürzung ihres
Baues zwei Spiegel angebracht sind, die das vom Objektiv erzeugte Bild auf eine parallel
zur optischen Achse gelegene Bildebene werfen, sind an sich bekannt. Bei diesen sind jedochibeide
Spiegel hinter dem Objektiv innerhalb der Kamera angebracht. ■ Hierdurch läßt
sich aber nicht der ganze Bildwinkel eines kurzbrennweitigen Objektivs ausnutzen.
Wie Abb. i; zeigt, ist ein Objektiv α zwisehen
den beiden Spiegeln ^1 und J2 so angebracht,
daß die optische Achse des Objektivs unter einem Winkel α zur Kanaeraach.se x-y
und zur Bildebene b, die parallel zur Kameraachse
liegt, geneigt ist.ίο · Cameras in which two mirrors are attached to shorten their construction, which project the image generated by the lens onto an image plane parallel to the optical axis, are known per se. In these, however, both mirrors are mounted behind the lens inside the camera. ■ As a result, however, the entire angle of view of a short focal length lens cannot be used.
As in Fig. I; shows, an objective α is attached between the two mirrors ^ 1 and J 2 so that the optical axis of the objective is inclined at an angle α to the Kanaeraach.se xy and to the image plane b, which is parallel to the camera axis.
Die Abb. 2 ermöglicht, die für die günstigste Abmessung erforderliche Neigung der optischen Achse zur Kameraachse ausfindig zu machen. In dieser bedeuten die auf der Abszisse A aufgetragenen Grade die Winkelneigung' der optischen Achse zur Kameraachse; die Kurve B bedeutet die Tiefe der Kamera, die Kurve C den größten Abstand des Spiegels S1 von der Bildebene, die Kurve D den größten Abstand des Spiegels ^2 von der Bildebene, die Kurve E den Abstand des Spiegels S1 vom Objektiv.Fig. 2 enables the inclination of the optical axis to the camera axis required for the most favorable dimension to be found. In this, the degrees plotted on the abscissa A mean the angular inclination 'of the optical axis to the camera axis; curve B denotes the depth of the camera, curve C the greatest distance between the mirror S 1 and the image plane, curve D the greatest distance between the mirror ^ 2 and the image plane, and curve E the distance between the mirror S 1 and the lens.
Claims (1)
Publications (1)
Publication Number | Publication Date |
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DE345573C true DE345573C (en) |
Family
ID=573817
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DENDAT345573D Active DE345573C (en) |
Country Status (1)
Country | Link |
---|---|
DE (1) | DE345573C (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3683770A (en) * | 1970-04-24 | 1972-08-15 | Polaroid Corp | Folding camera |
DE2912716A1 (en) * | 1979-03-30 | 1980-10-09 | Norbert F Heske | Large format camera taking four exposures on one sheet - has rotatable disc in light path exposing one quarter of film sheet at a time |
-
0
- DE DENDAT345573D patent/DE345573C/de active Active
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3683770A (en) * | 1970-04-24 | 1972-08-15 | Polaroid Corp | Folding camera |
DE2912716A1 (en) * | 1979-03-30 | 1980-10-09 | Norbert F Heske | Large format camera taking four exposures on one sheet - has rotatable disc in light path exposing one quarter of film sheet at a time |
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