US PATENT SUBCLASS 362 / 539
.~.~ Including mask or screen

Current as of: June, 1999
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362 /   HD   ILLUMINATION

459  DF  SUPPORTED BY VEHICLE STRUCTURE (E.G., ESPECIALLY ADAPTED FOR VEHICLE) {17}
538  DF  .~ Projection-type headlamp {1}
539.~.~ Including mask or screen

DEFINITION

Classification: 362/539

Including mask or screen:

(under subclass 538) Subject matter comprising a diaphragm or shade plate arranged in the reflector to create a dark-light limit line in the transmitted light beam or for partially shading and thus contouring the reflected light.

SEE OR SEARCH THIS CLASS, SUBCLASS:

303, for plural distinct reflecting surfaces including means for blocking axial rays.

305, for coaxial plural reflecting surfaces including means for modifying axial rays.

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313, Electric Lamp and Discharge Devices,

117, for an optical device or special ray transmitting envelope including light valve or obscuring means. [figure] [caption]A - Projection unit; B - Light bulb; C - Reflector; D - Projection lens; E - Lens holder; F - Mask or screen; G - Lamp body