Fully automatic diaphragm control interchangeable lens
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Mar 3, 1987
Grant Date -
N/A
app pub date -
May 16, 1985
filing date -
May 16, 1984
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
An interchangeable variable aperture lens can be used as an automatic lens with a camera body using digital signal control and with a camera body using analog signal control, and as a manual lens. The lens has both digital and analogue circuits for providing signals, to different camera bodies, indicative of the full open and full closed values of the lens diaphragm. Digital and analogue signal contacts are so positioned on the lens that the coacting contacts of different camera bodies are engaged when the lens is mounted on the different bodies, provided that the mechanical mount is the same.
First Claim
Family
International Classification(s)
Cited Art Landscape
Patent Citation Ranking
Advertisement
Advertisement
Advertisement
Recipient Email Address
Recipient Email Address
Comment
Recipient Email Address
Add to Portfolio(s)
To add this patent to one, or more, of your portfolios, simply click the add button.
This Patent is in these Portfolios:
Add to additional portfolios:
Last Refreshed On:
Changes done successfully