Patent US5349382A successfully refreshed from Google Patents.
US5349382A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Image pickup apparatus with image light focus prevention
Assignee: Canon Inc
•
Filing: 1992-04-10
•
Granted: 1994-09-20
•
Expires: 2012-04-10
Abstract
Abstract An image pickup apparatus photoelectrically converts image light from an object. The image light incident on the photosensing plane of the image pickup apparatus is optically controlled by a zoom lens and a focus lens. A controller drives the zoom lens to its telephoto position and drives the focus lens to its closest position so that bright image light is prevented from being focused on the photosensing plane.
Inventors
- 👤 Kyoji Tamura
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 23:27
CPC Classifications
H; H04; H04N; H04N23/00; H04N23/70; H04N23/75
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
59 words
An image pickup apparatus comprising: (a) image pickup means for photo-electrically converting image light from an object; (b) focusing means for focusing; and (c) control means for inhibiting the image light from being focused on the photo-sensing plane of said image pickup means for a predetermined period by controlling said focusing means after said image pickup apparatus is powered.
Claim 2
Dependent Claim
59 words
An image pickup apparatus comprising: (a) image pickup means for photo-electrically converting image light from an object; (b) focusing means for focusing; and (c) control means for inhibiting the image light from being focused on the photo-sensing plane of said image pickup means for a predetermined period by controlling said focusing means after said image pickup apparatus is powered.
Claim 3
Dependent Claim
25 words
An image pickup apparatus according to claim 1, wherein said focusing means defocuses the image on the photo-sensing plane by focusing on a closest object.
Claim 4
Dependent Claim
16 words
An apparatus according to claim 1, wherein said focusing means is included in a zoom lens.
Claim 5
Dependent Claim
21 words
An apparatus according to claim 3, wherein said control means prevents focusing by said focusing means, by driving the zoom lens.
Claim 6
Dependent Claim
26 words
An apparatus according to claim 4, wherein said control means prevents the focusing by said focusing means, by setting the zoom lens in zoom up state.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1997-09-19 | 1998-03-21 | 1998-09-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2001-09-19 | 2002-03-21 | 2002-09-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2005-09-19 | 2006-03-21 | 2006-09-20 | $7700.00 | Window Closed / Lapsed |