US PATENT SUBCLASS 396 / 133
.~ Lens drive circuit or motor structure

Current as of: June, 1999
Click HD for Main Headings
Click for All Classes

Internet Version by PATENTEC © 1999      Terms of Use


396 /   HD   PHOTOGRAPHY

89  DF  WITH EXPOSURE OBJECTIVE FOCUSING MEANS, FOCUSING AID, OR RANGEFINDING MEANS {28}
133.~ Lens drive circuit or motor structure {2}
134  DF  .~.~> Backlash or jam detection
135  DF  .~.~> Speed control {1}

DEFINITION

Classification: 396/133

Lens drive circuit or motor structure:

(under subclass 89) Subject matter wherein the means for adjusting the exposure objective includes a circuit and a motor, or details of the motor structure, responding to the circuit for displacing the exposure objective. (e.g. motor drive control circuit, piezoelectric motor, wave motor).

SEE OR SEARCH THIS CLASS, SUBCLASS:

248, for shutter driven by piezoelectric motor.

256, for shutter controlled by stepping motor.

259+, for diaphragm controlled by stepping motor.

261, for diaphragm driven by piezoelectric motor.

SEE OR SEARCH CLASS

359, Optics: Systems (Including Communication) and Elements, 696+, for lens adjusting mechanism driven by motor.