US PATENT SUBCLASS 396 / 89
WITH EXPOSURE OBJECTIVE FOCUSING MEANS, FOCUSING AID, OR RANGEFINDING MEANS

Current as of: June, 1999
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396 /   HD   PHOTOGRAPHY

89WITH EXPOSURE OBJECTIVE FOCUSING MEANS, FOCUSING AID, OR RANGEFINDING MEANS {28}
90  DF  .~> Lens resetting
91  DF  .~> Lens characteristic compensating {3}
95  DF  .~> Having pursuit mode
96  DF  .~> Having accumulation photoarray and time control means
97  DF  .~> Temperature compensating
98  DF  .~> Ambient light compensating
99  DF  .~> With amplification control
100  DF  .~> Dual purpose photoelement
101  DF  .~> With electronic filtering
102  DF  .~> Having in-focus threshold adjustable
103  DF  .~> Manually selected preset focus position or range
104  DF  .~> Reliability of focus/distance signal
105  DF  .~> Using sound
106  DF  .~> Having auxiliary illumination {4}
111  DF  .~> Optical detail with photoelement system {8}
121  DF  .~> Plural focusing or rangefinding areas {2}
124  DF  .~> Single focus area with variable size or location
125  DF  .~> Processing circuit {3}
129  DF  .~> Power supply control
130  DF  .~> Focus lock
131  DF  .~> Manually actuated power focus
132  DF  .~> Dual purpose motor
133  DF  .~> Lens drive circuit or motor structure {2}
137  DF  .~> Auto/manual mode selection
138  DF  .~> Mechanical rangefinder {1}
144  DF  .~> Mechanical mechanism for displacement of exposure objective {2}
147  DF  .~> Having indicator
148  DF  .~> Having viewfinder {2}

DEFINITION

Classification: 396/89

WITH EXPOSURE OBJECTIVE FOCUSING MEANS, FOCUSING AID, OR RANGEFINDING MEANS:

(under the class definition) Subject matter having means for adjusting the relative spacing between an exposure objective and the photos:graphic medium to alter a sharpness of an object image; means for assisting a camera operator in making

a visual determination of image sharpness; or means for measuring a distance from a camera to an object.

SEE OR SEARCH THIS CLASS, SUBCLASS:

48, for control circuit for sequencing at least three functions which may include focusing.

79+, for camera structure with variable focal length of an exposure objective including focusing means.

461, and 509, for diaphragm structures, per se, which may open for focusing or viewing.

534, for a camera hood which may be used in focusing or viewing.

, FOR 700+, for foreign art collections involving automatic camera focusing. , FOR 835+, for foreign art collections involving manual camera focusing.

SEE OR SEARCH CLASS

250, Radiant Energy,

201.1, for photocell controlling its optical path.

348, Television,

345+, for focus control of video camera.

352, Optics: Motion Pictures,

140, for focus control with a motion picture camera.

355, Photocopying,

56, for automatic focusing of a projection printer.

356, Optics: Measuring and Testing,

3+, for rangefinding, per se. 359, Optics: Systems (Including Communication) and Elements,

694+, for zoom-type lens adjusting mechanism, and subclasses 823+ for lens mount adjusting mechanism.