Exposure and camera control
US4519692A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Apr 8, 1983 |
| Grant date | May 28, 1985 |
| Priority date | — |
| Expiry date | Apr 8, 2003 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03B17/00
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
An exposure and camera control system comprising a keyboard for providing input information relating to film parameters and camera type, a light to frequency converter for providing signals having a frequency proportional to the intensity of light to be used in exposing the film, and a control operatively connected to the information providing keyboard and to the light to frequency converter for determining the film exposure time and for providing signals for controlling film exposure to light and signals for controlling film transport when the exposure is complete. The control includes a microprocessor, programmable memory, and input/output interface components. A display operatively connected to the control provides visual display of information inputs to the control and of calculated quantitites such as exposure time. A printer operatively connected to the control provides a hard copy record of the displayed information. A light detector operatively connected to the control includes a mirror normally positioned in the optical path for directing light to the light to frequency converter which mirror is moved out of the optical path before an exposure is made. Sensors in the camer…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.