DEAD-FRONT LENS FOR INTERIOR VEHICLE DISPLAY

摘要

A vehicle instrument cluster lens assembly for a vehicle instruments panel includes a first layer comprised of a quarter-wave plate (λ/4). A second layer which is a polarizer, a third layer of another quarter-wave plate (λ/4); the first and a fourth layer being a polarizer light to a new orientation. The quarter-wave plates change the orientation of the light angle that it can be seen with a polarized eye glass lens. The vehicle lens assembly functions in a dual manner depending on the light source direction and orientation of the light to prevent light emitted from the instrument as well as making the display light visible to viewers wearing polarized sunglasses.

主权项

1. A vehicle instrument cluster lens assembly for reducing glare which is viewable through a polarized eyeglass lens comprising:
A first layer comprised of a quarter wave plate for receiving and shifting the orientation of polarized light; A second layer comprised of a polarizer for polarizing incident light into linearly polarized light having a first orientation that corresponds to the polarizing orientation; A third layer comprised of a quarter wave plate for receiving polarized light and shifting the first orientation of the polarized light to a second orientation which differs from the first orientation; and, A fourth layer comprised of a polarizer for polarizing incident light into linearly polarized light having a third orientation that corresponds to the polarizing orientation wherein light from a lighted display exiting through said assembly via said front lens is oriented for passing through a polarized eyeglass lens.