Field-widened pinhole camera
Abstract
Wood demonstrated a method in 1906 that allowed 180-deg FOV but required that the film be immersed in a tank of water. This paper presents a technique that yields the same 180-deg FOV without the necessity of wetting the film. Rays from a 180-deg FOV cone are reduced to 84-deg cone due to refraction at the glass surface. If the cone were then incident on another glass/air plane surface, it would be expanded back to 180 deg.
- Publication:
-
Applied Optics
- Pub Date:
- September 1979
- DOI:
- Bibcode:
- 1979ApOpt..18.2913F
- Keywords:
-
- Cameras;
- Imaging Techniques;
- Photographic Equipment;
- Pinholes;
- Visual Fields;
- Incident Radiation;
- Refracted Waves;
- Refractivity;
- Instrumentation and Photography;
- CAMERAS;
- PHOTOGRAPHY