JPS6465530A - Autofocus camera - Google Patents

Autofocus camera

Info

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
Application number
JP22134987A
Other languages
Japanese (ja)
Inventor
Haruki Nakayama
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Konica Minolta Inc
Original Assignee
Konica Minolta Inc
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Konica Minolta Inc filed Critical Konica Minolta Inc
Priority to JP22134987A priority Critical patent/JPS6465530A/en
Priority to US07/239,369 priority patent/US4873542A/en
Publication of JPS6465530A publication Critical patent/JPS6465530A/en
Pending legal-status Critical Current

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.
JP22134987A 1987-09-04 1987-09-04 Autofocus camera Pending JPS6465530A (en)

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)

* Cited by examiner, † Cited by third party
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

Cited By (1)

* Cited by examiner, † Cited by third party
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

Similar Documents

Publication Publication Date Title
ES8203255A1 (en) Driving device for a feed screw.
EP0355640A3 (en) Focal length changeable camera
JPS5614225A (en) Focusing device
JPS6465530A (en) Autofocus camera
EP0394459A4 (en) Device for confirming the tap operation in the rigid tapping
GB2076931B (en) A shaft mounting arrangement particularly for mounting a pinion shaft in a gearbox
JPS5569111A (en) Single operation ring type zoom lens barrel
JPS6418116A (en) Zoom mechanism of zoom lens
JPS57151516A (en) Reciprocating conveyer
JPS5536173A (en) Head lamp leveling device
JPS6411212A (en) Zooming mechanism for zoom lens
JPS57173656A (en) Sliding feed device
JPS56167948A (en) Mover driven by screw shafts
JPS5748421A (en) Tapping machine
JPS5540334A (en) Gear change device
SU1074677A1 (en) Multistep reductor of electric drive for wire feed mechanism
ES8307560A1 (en) Driving arrangement for the forward and thread-cutting motion of the tool slide of lathes.
JPS54118938A (en) Magnetic clutch device with brake
JPS5559409A (en) Waterproof type lens barrel
SU948652A2 (en) Apparatus for screwing and unscrewing threaded joints
JPS5560743A (en) Speed stabilizer
SU634051A1 (en) Device for converting rotary motion into progressive motion
JPS561902A (en) Mirror driving device
JPS57151517A (en) Reciprocating conveyer
JPS5565060A (en) Taper corrector