Panoramic photographic methods

• US 3,909,121 A
• Filed: 06/25/1974
• Issued: 09/30/1975
• Est. Priority Date: 06/25/1974
• Status: Expired due to Term

• Current Assignee: Edgar Antonio De Mesquita Cardoso
• Original Assignee: Edgar Antonio De Mesquita Cardoso
• Inventors: de Mesquita Cardoso, Edgar Antonio
• Primary Examiner(s): Hayes, Monroe H.
• Application Number:
  US05/482,839
• Time in Patent Office: 462 Days
• Field of Search: 352/69,44
• US Class Current: 352/44
• CPC Class Codes: G03B 37/02 with scanning movement of lens or cameras

Abstract

A panoramic photographic process which employs a photographic instrument having an objective lens with an optical axis, an aperture in front of the lens, and a film guide in back of the lens for travel of film therealong. The method comprises advancing the film along the guide at a predetermined rate of speed, while rotating the instrument about an axis passing through the lens and extending at an angle to the optical axis, the direction and speed of rotation of the instrument being such that the net velocity of travel of the film is substantially zero so that it serves as an instantaneous center of rotation thereby enabling the photographing of the panorama situated above the natural or artificial horizon.

Claims

1. A process for effecting panoramic photography with a photographic instrument having an objective lens with an optical axis, an aperture in front of the lens, and an apertured film guide in back of the lens for travel of film therealong, said process comprising uniformly advancing the film continuously along the guide at a predetermined constant rate of speed whereby successive portions of the film are continuously exposed through the aperture in the film guide, and rotating the instrument independently of the advancing of the film on a fixed support about an axis passing through the lens and extending at an angle to the optical axis, the direction and speed of rotation of the instrument relative to said support being such that the net velocity of travel of the film relative to said support is substantially zero.

2. A process as claimed in claim 1 wherein said instrument is a camera and the film is exposed to the image revealed through the lens during travel of the instrument about said axis or rotation.

3. A process as claimed in claim 1 wherein said film guide is flat.

4. A process as claimed in claim 1 wherein said film guide is curved.

5. A process as claimed in claim 1 wherein the axis of rotation is perpendicular to the optical axis of the lens.

6. A process as claimed in claim 1 wherein the axis of rotation is inclined with respect to the optical axis of the lens.

7. A process as claimed in claim 1 wherein said instrument is a projector and an image on the film is projected through the lens during travel of the instrument about said axis of rotation.

8. A process as claimed in claim 7 wherein the speed of rotation of the projector is correlated to the phenomena of persistence of vision so that a continuous image appears to be projected.

9. A process as claimed in claim 1 wherein a relatively small net speed of travel of the film is provided to effect enlargement or reduction of the image along the direction of travel and depending on the sense of direction.

10. A process as claimed in claim 1 wherein a narrow slot is formed in said film guide at a location in alignment along the optical axis and in front of the path of travel of the film.

11. A process as claimed in claim 1 wherein the axis of rotation of the instrument is positioned between the instrument aperture and the film guide.