JPS55155312A - Automatic focus mover in optical machine including floating optical system - Google Patents
Automatic focus mover in optical machine including floating optical systemInfo
- Publication number
- JPS55155312A JPS55155312A JP6448479A JP6448479A JPS55155312A JP S55155312 A JPS55155312 A JP S55155312A JP 6448479 A JP6448479 A JP 6448479A JP 6448479 A JP6448479 A JP 6448479A JP S55155312 A JPS55155312 A JP S55155312A
- Authority
- JP
- Japan
- Prior art keywords
- barrel
- lens
- switch
- counter
- machine including
- 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.)
- Granted
Links
Landscapes
- Automatic Focus Adjustment (AREA)
- Eye Examination Apparatus (AREA)
- Focusing (AREA)
Abstract
PURPOSE: To make operation easy by power-operating the rear lens of the control lens-barrel through provision of a motor and counter.
CONSTITUTION: A control lens-barrel 3 is screwed into a floating lens-barrel 4, and the floating lens-barrel 4 is fixed to a movable frame 21. A reversible motor 30 is provided to the movable frame 21 and a porous disc 35 is provided to its revolving shaft 31. The light detected in a photo detecting part 37 through its small holes is supplied to a counter 39 through an amplifier 35. Now, when it is desired to move focus forward, a change-over switch 67 is set in the - side and conversely when it is desired to move the same backward, a switch 52 is instantaneously reset cooperatively when the switch 67 is set in + side. Next, if a start switch 63 is kept pushed until the focal plane reach a desired position, the reversible motor 30 is run in the designated direction by way of the driving circuit 66 and the focal plane is approached to the desired position. In this way, the operation may be made simple.
COPYRIGHT: (C)1980,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP6448479A JPS55155312A (en) | 1979-05-23 | 1979-05-23 | Automatic focus mover in optical machine including floating optical system |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP6448479A JPS55155312A (en) | 1979-05-23 | 1979-05-23 | Automatic focus mover in optical machine including floating optical system |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS55155312A true JPS55155312A (en) | 1980-12-03 |
JPS6151892B2 JPS6151892B2 (en) | 1986-11-11 |
Family
ID=13259530
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP6448479A Granted JPS55155312A (en) | 1979-05-23 | 1979-05-23 | Automatic focus mover in optical machine including floating optical system |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS55155312A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS59156208U (en) * | 1983-04-05 | 1984-10-20 | 京セラ株式会社 | Lens movement amount detection device |
JP2018042877A (en) * | 2016-09-16 | 2018-03-22 | 株式会社トプコン | Corneal endothelial cell imaging apparatus and control method therefor |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0168094U (en) * | 1987-10-28 | 1989-05-01 |
-
1979
- 1979-05-23 JP JP6448479A patent/JPS55155312A/en active Granted
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS59156208U (en) * | 1983-04-05 | 1984-10-20 | 京セラ株式会社 | Lens movement amount detection device |
JP2018042877A (en) * | 2016-09-16 | 2018-03-22 | 株式会社トプコン | Corneal endothelial cell imaging apparatus and control method therefor |
Also Published As
Publication number | Publication date |
---|---|
JPS6151892B2 (en) | 1986-11-11 |
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