PL3771B1 - Device for taking photographs in natural colors, especially for cinematographic purposes. - Google Patents

Device for taking photographs in natural colors, especially for cinematographic purposes. Download PDF

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Publication number
PL3771B1
PL3771B1 PL3771A PL377122A PL3771B1 PL 3771 B1 PL3771 B1 PL 3771B1 PL 3771 A PL3771 A PL 3771A PL 377122 A PL377122 A PL 377122A PL 3771 B1 PL3771 B1 PL 3771B1
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PL
Poland
Prior art keywords
lenses
natural colors
taking photographs
mirrors
mirror
Prior art date
Application number
PL3771A
Other languages
Polish (pl)
Filing date
Publication date
Application filed filed Critical
Publication of PL3771B1 publication Critical patent/PL3771B1/en

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Description

Istota wynalazku polegal na tein, ze ru¬ chome, stosunkowo wielkie zwierciadlo rzu¬ ca promienie swietlne na trzy poza niem jedno za drugiem ustawione ruchome i stop¬ niowo coraz mniejsze zwierciadla do ob¬ iektywów. Wskutek malych rozmiarów ob¬ razów kinowych odleglosci ogniskowe sa krótkie, co powoduje te wade, ze ramki zwaerciadlowe, wzglednie paski osrebrzone doznaja wspólnego odfotografowiania. Zwier¬ ciadla ruchome na wszystkie strony nalezy umiesbic bezposrednio' przed sciczewkami objektywów. Aby osiagnac wielki kat obra¬ zowy, nalezy zastosowac bardzo wielkie zwierciadlo. Zwierciadla db objektywów sa stopniowo coraz mniejsze, tak, ze najwyzej umieszczone wieksze jest, anizeli srodko¬ we, a srodkowe wieksze od nastepnego.Przez to stopniowanie unika sie wspólnego odfotografowamia obramowania zwierciadel oraiz osiaga sie równoczesnie powiekszenia pola obnaizu. Gdyby, np. zwierciadlo przed najwyzej umieszczonym objebtywem bylo równie tak wielkie, jak wlielkile Ewierciiadlo, to odwrotna strona jego obramowania by¬ laby odtworzona przez pierwszy objektyw.To samo dotyczy reszty objektywów i zwier¬ ciadel.Aby uniknac tworzenia sie podwójnych obrazów, zastosowuje sie dla najwyzej i srednio umieszczonego olbjektywu klinowe plytki.Rozdiziial swiatla bez oslony objektywu m brzenie dolnego kata plytek srodkowego zwierciadla. ¦4Przedstawiony na rysunku przyklad przedstawia wielkie zwierciadlo 1, zwiercia¬ dla przed objektywatmi 2, 3, 4 i objektywy 5. Wielkie zwierciadlo jako tez zwierciadlafr przed objektywami sa umieszczone rucho- cCmo, a| mianowicia osadzone jest kazde, np. ^ ! w raii^^:,<^iQ^iiGh 7, przy):jzem rama ob¬ raca sie okolo czopa 6 (fig. 3). Zwierciadla umieszczone sa bezposrednio przed obiek¬ tywami, aby w polaczeniu z wielkiem zwier¬ ciadlem osiagnac mozliwie najwieksize pole obrazu takze dla dolnego cbjektywu. PL PLThe essence of the invention was that a movable, relatively large mirror casts light rays onto three movable and progressively smaller objective mirrors, arranged one behind the other. Due to the small size of cinema images, the focal lengths are short, which causes the disadvantage that the mirror frames or silvered strips are subject to collective de-photographic effects. Mirrors movable in all directions must be placed directly in front of the objective lenses. To achieve a large image angle, a very large mirror must be used. The mirrors in the two lenses are gradually smaller, so that the highest one is larger than the middle one, and the middle one is larger than the next one. This gradation avoids the mirrors from being photographed together and simultaneously enlarges the field of view. If, for example, the mirror in front of the highest lens were as large as the largest mirror, the reverse side of its frame would be reproduced by the first lens. The same applies to the remaining lenses and mirrors. To avoid double images, wedge-shaped plates are used for the highest and middle lenses. The light distribution without a lens cover is achieved by the lower angle of the plates of the middle mirror. 4The example shown in the drawing shows a large mirror 1, mirrors for lenses 2, 3, 4, and lenses 5. The large mirror, as well as the mirrors for lenses 5, are movably placed in front of the lenses, and each is mounted, for example, in a frame 7, with the frame rotating about a pivot 6 (Fig. 3). The mirrors are placed directly in front of the lenses in order to achieve the largest possible image field, in combination with the large mirror, also for the lower lens.

PL3771A 1922-06-07 Device for taking photographs in natural colors, especially for cinematographic purposes. PL3771B1 (en)

Publications (1)

Publication Number Publication Date
PL3771B1 true PL3771B1 (en) 1926-02-27

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