04190832 is referenced by 46 patents and cites 4 patents.

A windshield indicia display system utilizing a liquid crystal display in conjunction with a polarizing filter element and semi-transparent reflective tape element to form a unique optical system capable of projecting in digital format a virtual image into the visual field of the operator. This virtual image, focused at infinity, utilizes the unmodified windshield as a remote polarizer for this unique optical system. Electronic means are provided to convert vehicle speed or other indicia into a decimal format capable of digital display by the system.

Title
Polarized windshield indicia reflection display system
Application Number
5/897251
Publication Number
4190832
Application Date
April 18, 1978
Publication Date
February 26, 1980
Inventor
Sailor Mohler
5410 Lightning View, Columbia, 21044
MD, US
Agent
Morton J Rosenberg
IPC
G09F 9/32
View Original Source