Patent US3893135A successfully refreshed from Google Patents.
US3893135A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for moving lens of camera for focusing
Assignee: Minolta Co Ltd
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Filing: 1974-02-04
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Granted: 1975-07-01
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Expires: 1994-02-04
Abstract
Abstract An apparatus comprising a movable focusing member, a focusing ring movable therewith to vary the amount of focusing movement of a main taking lens and a lens unit including a lens for special photography having an optical axis coinciding with that of the main taking lens when the lens unit is selectively set in position for special photography. The lens unit has a portion operable to control the focusing member by the unit being set in position and to thereby automatically set the main taking lens in a specified focused position for special photography.
Inventors
- 👤 Toru Matsui
- 👤 Akira Yoshizaki
- 👤 Yasuzi Kogure
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 21:34
CPC Classifications
G; G02; G02B; G02B7/00; G02B7/02; G02B7/04; G02B7/10; G02B7/105; G03; G03B; G03B29/00; G03B3/00; G03B3/02
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
141 words
An apparatus for adjusting the focus of the main taking lens of a camera comprising: a movable focussing member; a focussing ring for effecting the focussing movement of the main taking lens in operative relation to the movement of the focussing member; and a lens unit including a lens for special photography and a portion for setting the main taking lens to a predetermined focussed position which is dependent on the focal length of the special photography lens, and adapted to be set to a position for special photography in which the optical axis of the special photography lens registers with that of the main taking lens, the main taking lens setting portion of the lens unit, when the unit is positioned for special photography, acting on the focussing member to thereby set the main taking lens to said predetermined position.
Claim 2
Independent Claim
141 words
An apparatus for adjusting the focus of the main taking lens of a camera comprising: a movable focussing member; a focussing ring for effecting the focussing movement of the main taking lens in operative relation to the movement of the focussing member; and a lens unit including a lens for special photography and a portion for setting the main taking lens to a predetermined focussed position which is dependent on the focal length of the special photography lens, and adapted to be set to a position for special photography in which the optical axis of the special photography lens registers with that of the main taking lens, the main taking lens setting portion of the lens unit, when the unit is positioned for special photography, acting on the focussing member to thereby set the main taking lens to said predetermined position.
Claim 3
Dependent Claim
75 words
The apparatus as set forth in claim 1 further comprising: a latch member for preventing the movement of the focussing member by elastic contact therewith at least while taking an ordinary photograph, and a projection included in the unit and operable by the unit being set in position to act on the latch member and to free the focusing member therefrom before the focusing member controlling portion of the unit acts on the focusing member.
Claim 4
Dependent Claim
73 words
The apparatus as set forth in claim 2 wherein the focussing member includes a pin projecting therefrom and the main taking lens setting portion of the lens unit, when the unit is set to the position for special photography, directly acts on the pin and determines the position of the focussing member in accordance with the focal length of the special photography lens, thereby setting the main taking lens to said predetermined position.
Claim 5
Dependent Claim
94 words
The apparatus as set forth in claim 1 further comprising: a control cam movable in operative relation to the movement of the focussing member and having a cam portion so disposed as to contact the main taking lens setting portion when the lens unit is set to the position for special photography, whereby the main taking lens setting portion acts through the cam on the focussing member and determines the position thereof in accordance with the focal length of the special photography lens, thereby setting the main taking lens to said predetermined focussed position.
Claim 6
Dependent Claim
28 words
The apparatus as set forth in claim 1 wherein the lens unit for special photography is detachably mountable on the camera body at a specified position outside thereof.
Claim 7
Dependent Claim
38 words
The apparatus as set forth in claim 1 wherein the lens unit for special photography is slidably housed in the camera body and settable in a specified position in front of the main taking lens for special photography.
Claim 8
Dependent Claim
30 words
The apparatus as set forth in claim 6 wherein there is provided another lens unit for special photography detachably mountable on the camera body at a specified position outside thereof.
Claim 9
Dependent Claim
124 words
The apparatus as set forth in claim 1 wherein a latch member for preventing the movement of the focusing member by elastic contact therewith is provided, and one projection formed on the lens unit for special photography serves as a portion of the lens unit operable to act on the latch member by the unit being set in position and also as the portion for controlling the focusing member, the rear end of the latch Member for contact with the projection and a cam portion for contact with the projection being so arranged that the setting of the lens unit first causes the projection to contact the rear end, thereafter bringing the projection into contact with the cam portion to control the focusing member.
Claim 10
Independent Claim
184 words
An apparatus for moving the lens of a camera for focussing comprising: a movable focussing member, a focussing ring for varying the amount of focussing movement of a main taking lens in operative relation to the movement of the focussing member, a lens unit for special photography including a lens for special photography having an optical axis to be brought into coincidence with that of the main taking lens when set in position, the unit having a portion operable to act on the focussing member by the unit being set in position and to control the focussing member when the unit is set in position, thereby setting the main taking lens in a specified focussed position for special photography, a latch member for preventing the movement of the focussing member by elastic contact therewith at least while taking an ordinary photograph, and a projection included in the unit and operable by the unit being set in position to act on the latch member and to free the focussing member therefrom before the focussing member controlling portion of the unit acts on the focussing member.
Claim 11
Independent Claim
184 words
An apparatus for moving the lens of a camera for focussing comprising: a movable focussing member, a focussing ring for varying the amount of focussing movement of a main taking lens in operative relation to the movement of the focussing member, a lens unit for special photography including a lens for special photography having an optical axis to be brought into coincidence with that of the main taking lens when set in position, the unit having a portion operable to act on the focussing member by the unit being set in position and to control the focussing member when the unit is set in position, thereby setting the main taking lens in a specified focussed position for special photography, a latch member for preventing the movement of the focussing member by elastic contact therewith at least while taking an ordinary photograph, and a projection included in the unit and operable by the unit being set in position to act on the latch member and to free the focussing member therefrom before the focussing member controlling portion of the unit acts on the focussing member.
Claim 12
Independent Claim
232 words
An apparatus for moving the lens of a camera for focussing comprising: a movable focussing member, a focussing ring for varying the amount of focussing movement of a main taking lens in operative relation to the movement of the focussing member, a lens unit for special photography including a lens for special photography having an optical axis to be brought into coincidence with that of the main taking lens when set in position, the unit having a portion operable to act on the focussing member by the unit being set in position and to control the focussing member when the unit is set in position, thereby setting the main taking lens in a specified focussed position for special photography, a latch member for preventing the movement of the focussing member by elastic contact therewith, and a projection formed on the lens unit for special photography serving as the portion of the lens unit operable to act on the latch member by the unit being set in position and also as the portion for controlling the focussing member, the rear end of the latch member for contact with the projection and a cam portion for contact with the projection being so arranged that the setting of the lens unit first causes the projection to contact the rear end, thereafter bringing the projection into contact with the cam portion to control the focussing member.
Claim 13
Independent Claim
232 words
An apparatus for moving the lens of a camera for focussing comprising: a movable focussing member, a focussing ring for varying the amount of focussing movement of a main taking lens in operative relation to the movement of the focussing member, a lens unit for special photography including a lens for special photography having an optical axis to be brought into coincidence with that of the main taking lens when set in position, the unit having a portion operable to act on the focussing member by the unit being set in position and to control the focussing member when the unit is set in position, thereby setting the main taking lens in a specified focussed position for special photography, a latch member for preventing the movement of the focussing member by elastic contact therewith, and a projection formed on the lens unit for special photography serving as the portion of the lens unit operable to act on the latch member by the unit being set in position and also as the portion for controlling the focussing member, the rear end of the latch member for contact with the projection and a cam portion for contact with the projection being so arranged that the setting of the lens unit first causes the projection to contact the rear end, thereafter bringing the projection into contact with the cam portion to control the focussing member.
References Cited (Backward Citations)
US3687041A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-06-30 | 1978-12-30 | 1979-07-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-06-30 | 1982-12-30 | 1983-07-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-06-30 | 1986-12-30 | 1987-07-01 | $7700.00 | Window Closed / Lapsed |