US PATENT SUBCLASS 359 / 196
DEFLECTION USING A MOVING ELEMENT OR MEDIUM (OFFSETTING OR CHANGING AT LEAST A PORTION OF THE BEAM)

Current as of: June, 1999
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359 /   HD   OPTICS: SYSTEMS (INCLUDING COMMUNICATION) AND ELEMENTS

196DEFLECTION USING A MOVING ELEMENT OR MEDIUM (OFFSETTING OR CHANGING AT LEAST A PORTION OF THE BEAM) {3}
197  DF  .~> Using a periodically moving element (periodic change of optically reflecting, refracting or diffracting element) {6}
222  DF  .~> By frustrated total internal reflection
223  DF  .~> By moving a reflective element {3}

DEFINITION

Classification: 359/196

DEFLECTION USING A MOVING ELEMENT OR MEDIUM (OFFSETTING OR CHANGING AT LEAST A PORTION OF THE BEAM):

(under the class definition) Subject matter comprising structure for offsetting or changing the direction of at least a portion of the incident light by moving a light reflecting or transmitting element or medium into or out of the light beam or by changing the position of a reflecting or transmitting element or medium in the light beam.

(1) Note. A prism may be employed for refracting or reflecting light. Prism reflections are considered to be internal reflections; that is, the light is inside the prism body before and immediately after reflection. Light beam deflection by a movable prism is included in this subclass.

(2) Note. Lenses or curved surface mirrors movable for focusing are classified elsewhere in this class.

SEE OR SEARCH THIS CLASS, SUBCLASS:

197+, for light beam deflection by a periodically moving element.

298+, for light wave directional modulation.

577+, for light control by light interference. 831+, for prisms in general.

SEE OR SEARCH CLASS

250, Radiant Energy,

503.1+, for an invisible radiation source with a radiation modifying member, in general, and subclasses 505.1+ for radiation-controlling elements, per se, exclusive of infrared, visible, and ultraviolet types.

348, Television, for mechanical-optical scanning by moving a lens or refractor.