US PATENT SUBCLASS 264 / 1.1
OPTICAL ARTICLE SHAPING OR TREATING

Current as of: June, 1999
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264 /   HD   PLASTIC AND NONMETALLIC ARTICLE SHAPING OR TREATING: PROCESSES

1.1OPTICAL ARTICLE SHAPING OR TREATING {11}
1.21  DF  .~> Nonresinous material only (e.g., ceramic, etc.) {2}
1.24  DF  .~> Optical fiber, waveguide, or preform {4}
1.31  DF  .~> Light polarizing article or holographic article {3}
1.36  DF  .~> Utilizing plasma, electric, electromagnetic, particulate, or wave energy {2}
1.6  DF  .~> Continuous or indefinite length
1.7  DF  .~> Composite or multiple layer {2}
2.1  DF  .~> Rotational molding
2.2  DF  .~> Changing mold size or shape during molding or with shrinkage compensation {2}
2.5  DF  .~> Including step of mold making
2.6  DF  .~> Nonmechanical aftertreatment (e.g., hydration of contact lens, extraction, heat treatment, etc.)
2.7  DF  .~> Reshaping or treatment of an optical preform

DEFINITION

Classification: 264/1.1

OPTICAL ARTICLE SHAPING OR TREATING:

(under the class definition) Processes directed to forming articles capable of producing an optical effect other than mere transparency or planar reflection.

(1) Note. The effect may be of (a) substantially total divergence, convergence or internal reflection of light rays passing through or directed at said articles, or (b) transmitting or reflecting light rays vibrating in one plane only, e.g., polarized light, said articles having a desired contour, shape, internal molecular arrangement, or of a specific composition necessary to bring about said optical effects.

(2) Note. This subclass provides for a process in which a nonoptical article is molded against an optical article.

SEE OR SEARCH THIS CLASS, SUBCLASS:

73+, and 108+, for producing articles having nacreous or pearlescent surface effects.

322, for a process of preliminary softening of a workpiece and then applying heat and/or pressure to the workpiece to form a curvilinear article which has the shape of a lens.

SEE OR SEARCH CLASS

65, Glass Manufacturing, 37+, for processes within the class definition for lens making.

359, Optics: Systems (Including Communication) and Elements, appropriate subclasses for optical elements, per se.

428, Stock Material or Miscellaneous Articles, appropriate subclasses for a stock material product or article having light-transmitting properties; especially

34, for a product having spaced, gas-enclosing, light-transmissive sheets sealed at their edges; subclass 38 for an article having a light-transmissive or translucent mass with an opaque border or frame; and subclasses 426+ for a nonstructural composite web or sheet including a layer comprising glass.