JPS6418134A - Viewfinder lens adjusting mechanism - Google Patents

Viewfinder lens adjusting mechanism

Info

Publication number
JPS6418134A
JPS6418134A JP17512787A JP17512787A JPS6418134A JP S6418134 A JPS6418134 A JP S6418134A JP 17512787 A JP17512787 A JP 17512787A JP 17512787 A JP17512787 A JP 17512787A JP S6418134 A JPS6418134 A JP S6418134A
Authority
JP
Grant status
Application
Patent type
Prior art keywords
lens
gear
adjusting
rotates
clockwise
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
JP17512787A
Inventor
Masanori Takeuchi
Original Assignee
Seiko Epson Corp
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

Links

Abstract

PURPOSE:To reduce the size of a lens adjusting mechanism and to adjust focal length finely by providing a lens adjusting screw outside the lens adjusting mechanism and moving a lens according to the movement of bevel gears, spur gears, and a worm gear which are added to the screw. CONSTITUTION:When the lens adjusting screw 17 is rotated, for example, clockwise, a bevel gear 18 connected to the knob 17 rotates clockwise and a bevel gear 19 rotates counterclockwise accordingly. A spur gear 20 connected to the bevel gear 19 rotates counterclockwise similarly and a spur gear 21 which contacts it rotates clockwise. Consequently, the worm gear 22 connected to the spur gear 21 rotates clockwise and a claw 23 for movement moves in the long-axis direction of the worm gear 22. Namely, a plastic lens 16 itself moves forth and back integrally with the claw 23 for movement. Consequently, the lens adjusting mechanism itself is reduced in size and the moving length of the lens is made long to adjust the focal length finely.
JP17512787A 1987-07-14 1987-07-14 Viewfinder lens adjusting mechanism Pending JPS6418134A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP17512787A JPS6418134A (en) 1987-07-14 1987-07-14 Viewfinder lens adjusting mechanism

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP17512787A JPS6418134A (en) 1987-07-14 1987-07-14 Viewfinder lens adjusting mechanism

Publications (1)

Publication Number Publication Date
JPS6418134A true true JPS6418134A (en) 1989-01-20

Family

ID=15990758

Family Applications (1)

Application Number Title Priority Date Filing Date
JP17512787A Pending JPS6418134A (en) 1987-07-14 1987-07-14 Viewfinder lens adjusting mechanism

Country Status (1)

Country Link
JP (1) JPS6418134A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4968016A (en) * 1987-11-10 1990-11-06 Mita Industrial Co., Ltd. Image-forming machine
JPH0675743U (en) * 1993-09-06 1994-10-25 株式会社ノダ Laminate
JP2012118124A (en) * 2010-11-29 2012-06-21 Ricoh Co Ltd Image projection device
JP2015007689A (en) * 2013-06-25 2015-01-15 カシオ計算機株式会社 Optical axis adjustment device and projection device

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4968016A (en) * 1987-11-10 1990-11-06 Mita Industrial Co., Ltd. Image-forming machine
JPH0675743U (en) * 1993-09-06 1994-10-25 株式会社ノダ Laminate
JP2012118124A (en) * 2010-11-29 2012-06-21 Ricoh Co Ltd Image projection device
JP2015007689A (en) * 2013-06-25 2015-01-15 カシオ計算機株式会社 Optical axis adjustment device and projection device

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