DE705249C - Light meter for cinema recorders - Google Patents
Light meter for cinema recordersInfo
- Publication number
- DE705249C DE705249C DEN43809D DEN0043809D DE705249C DE 705249 C DE705249 C DE 705249C DE N43809 D DEN43809 D DE N43809D DE N0043809 D DEN0043809 D DE N0043809D DE 705249 C DE705249 C DE 705249C
- Authority
- DE
- Germany
- Prior art keywords
- light meter
- cinema
- recorders
- cell
- aperture
- 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
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
- G03B7/00—Control of exposure by setting shutters, diaphragms or filters, separately or conjointly
- G03B7/08—Control effected solely on the basis of the response, to the intensity of the light received by the camera, of a built-in light-sensitive device
- G03B7/099—Arrangement of photoelectric elements in or on the camera
- G03B7/0993—Arrangement of photoelectric elements in or on the camera in the camera
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Photometry And Measurement Of Optical Pulse Characteristics (AREA)
Description
Belichtungsmesser für Kinoaufnahmeapparate Das Hauptpatent betrifft die Anordnung von Belichtungsmessern an Kinoaufnahmeapparaten mit Objektivrevolvern mit mehreren wahlweisc benutzbaren Objektiven auf einem gemeinsamen Träger und hat zum Gegenstand. daß auf der Objektivträgerplatte auch die Zelle des Belichtungsmessers vorgesehen ist und ihr Blendeneinstellring mit der dazugehörigen Einstellmechanik der Objektivblenden derart gekuppelt ist, daß die Blendenringe beim Objektivwechsel in festem Eingriff bleiben. Bei der in Fig. i der Schrift des Hauptpatents dargestellten Bauweise ist vorgesehen, daß die Zelle des Belichtungsmessers an Stelle eines dritten Objektivs am Umfang des Objektivrevolvers aufmontiert ist. Bei dieser Anordnung bereitet die Aufmontage von drei oder vier Objektiven, welche mit ihren Blendenringen mit dem Blendeneinstellring der Belichtungsmesserzelle in Eingriff bleiben müssen, Schwierigkeiten. Dieser Nachteil wird durch die Erfindung dadurch behoben, daß die Zelle des Belichtungsmessers in der Drehachse des Objektivrevolvers und die Objektive um die Zelle angeordnet sind.Exposure meters for cinema recorders The main patent relates to the arrangement of exposure meters on cinema cameras with objective revolvers with several optional usable lenses on a common carrier and has to the subject. that on the lens support plate also the cell of the light meter is provided and its aperture setting ring with the associated adjustment mechanism the lens aperture is coupled in such a way that the aperture rings when changing lenses remain in firm engagement. In the one shown in Fig. I of the document of the main patent Construction is provided that the cell of the light meter in place of a third Lens is mounted on the circumference of the nosepiece. With this arrangement prepares the mounting of three or four lenses, which with their aperture rings must remain engaged with the aperture setting ring of the light meter cell, Trouble. This disadvantage is eliminated by the invention in that the Cell of the light meter in the axis of rotation of the nosepiece and the objectives are arranged around the cell.
In der Zeichnung ist Teil i der Objektivrevolver. 2, 3, 4 und 5 sind vier Objektive, welche mit ihren Blendenringen 8, 9, io und i i in den Blendeneinstellring; der Belichtungsmesserzelle 6 eingreifen.In the drawing, part i is the nosepiece. 2, 3, 4 and 5 are four lenses, which with their aperture rings 8, 9, io and i i in the aperture setting ring; the light meter cell 6 intervene.
Claims (1)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DEN43809D DE705249C (en) | 1940-01-30 | 1940-01-30 | Light meter for cinema recorders |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DEN43809D DE705249C (en) | 1940-01-30 | 1940-01-30 | Light meter for cinema recorders |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| DE705249C true DE705249C (en) | 1941-04-22 |
Family
ID=7348778
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DEN43809D Expired DE705249C (en) | 1940-01-30 | 1940-01-30 | Light meter for cinema recorders |
Country Status (1)
| Country | Link |
|---|---|
| DE (1) | DE705249C (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0019666A1 (en) * | 1979-05-28 | 1980-12-10 | Océ-Helioprint A.S. | Lens turret |
-
1940
- 1940-01-30 DE DEN43809D patent/DE705249C/en not_active Expired
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0019666A1 (en) * | 1979-05-28 | 1980-12-10 | Océ-Helioprint A.S. | Lens turret |
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