JPS6465530A - Autofocus camera - Google Patents
Autofocus cameraInfo
- Publication number
- JPS6465530A JPS6465530A JP22134987A JP22134987A JPS6465530A JP S6465530 A JPS6465530 A JP S6465530A JP 22134987 A JP22134987 A JP 22134987A JP 22134987 A JP22134987 A JP 22134987A JP S6465530 A JPS6465530 A JP S6465530A
- Authority
- JP
- Japan
- Prior art keywords
- feed screw
- screw rod
- nut
- speed reduction
- spacer
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Landscapes
- Focusing (AREA)
- Automatic Focus Adjustment (AREA)
Abstract
PURPOSE:To simplify a guiding and driving system for a focus lens by screwing the female screw part of a spacer nut into the feed screw part of a feed screw rod and rotating and adjusting the feed screw rod from an end part of the feed screw rod. CONSTITUTION:The feed screw rod 11 has feed screw parts 11b which are adjacent in the lengthwise direction of a shaft part 11a and the female screw pat 13a of the spacer nut 13 are engaged threadably with the feed screw pats 11b. Then both end parts of the spacer nut 13 are supported between a thrust bearing 14 fallen in the fitting hole 6a of a 1st base 6 and the bearing ring 15 of a 1st lens barrel member 2 while inhibited from moving lengthwise. Consequently, the nut 13 which is rotated and controlled by a focus control motor and the feed screw rod 11 which is engaged threadably with the nut are used as a driving and guiding member, so the speed reduction ratio of a speed reduction gear is reduced and an autofocus mechanism is simplified.
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP22134987A JPS6465530A (en) | 1987-09-04 | 1987-09-04 | Autofocus camera |
US07/239,369 US4873542A (en) | 1987-09-04 | 1988-09-01 | Auto-focus camera |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP22134987A JPS6465530A (en) | 1987-09-04 | 1987-09-04 | Autofocus camera |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS6465530A true JPS6465530A (en) | 1989-03-10 |
Family
ID=16765406
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP22134987A Pending JPS6465530A (en) | 1987-09-04 | 1987-09-04 | Autofocus camera |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS6465530A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6072413A (en) * | 1996-11-28 | 2000-06-06 | Nec Corporation | Current output type digital-to-analog converter capable of suppressing output current fluctuation using a current mirror |
-
1987
- 1987-09-04 JP JP22134987A patent/JPS6465530A/en active Pending
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6072413A (en) * | 1996-11-28 | 2000-06-06 | Nec Corporation | Current output type digital-to-analog converter capable of suppressing output current fluctuation using a current mirror |
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