Title:
OPTICAL INSTRUMENT AND ACCESSORY DEVICE
Document Type and Number:
Japanese Patent JP2017090726
Kind Code:
A
Abstract:
PROBLEM TO BE SOLVED: To provide an optical instrument and an accessory device that can transmit positional information on a member without delay, without obstructing communication of various types of information.SOLUTION: An optical instrument allowing an accessory device to be attached thereon is provided with communication means for transmitting a prescribed signal to the accessory device to stop driving of drive means of the accessory device when a driven member driven by the drive means reaches a prescribed position.SELECTED DRAWING: Figure 5
Inventors:
WATANABE MINORU
Application Number:
JP2015221755A
Publication Date:
May 25, 2017
Filing Date:
November 12, 2015
Export Citation:
Assignee:
CANON KK
International Classes:
G03B17/14; G02B7/08; H04N5/225
Domestic Patent References:
| JP2015094863A | 2015-05-18 | |||
| JP2007206451A | 2007-08-16 | |||
| JP2001337261A | 2001-12-07 | |||
| JPH09211647A | 1997-08-15 |
Foreign References:
| WO2014034603A1 | 2014-03-06 |
Attorney, Agent or Firm:
Ryosuke Fujimoto
Atsushi Mizumoto
Hirayama Tomoya
Atsushi Mizumoto
Hirayama Tomoya