Polarized windshield indicia reflection display system
First Claim
Patent Images
1. A windshield indicia display system comprising:
- multi-segment liquid crystal display means positionally located adjacent said windshield in a manner allowing external light to pass through said windshield for impingement upon and through said liquid crystal display means;
a polarizing filter element located adjacent said liquid crystal display means, said light passing through said display means and said filter element being filtered; and
,means for reflecting said light initially passing through said liquid crystal display means and said polarizing filter element in a substantially reversed path displacement, said reflected light passing through said polarizing filter element and said multi-segment liquid crystal display means for reflection from said windshield, said reflecting means and said polarizing filter element being positioned in substantially parallel plane relation each to the other.
0 Assignments
0 Petitions
Accused Products
Abstract
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.
68 Citations
17 Claims
-
1. A windshield indicia display system comprising:
-
multi-segment liquid crystal display means positionally located adjacent said windshield in a manner allowing external light to pass through said windshield for impingement upon and through said liquid crystal display means; a polarizing filter element located adjacent said liquid crystal display means, said light passing through said display means and said filter element being filtered; and
,means for reflecting said light initially passing through said liquid crystal display means and said polarizing filter element in a substantially reversed path displacement, said reflected light passing through said polarizing filter element and said multi-segment liquid crystal display means for reflection from said windshield, said reflecting means and said polarizing filter element being positioned in substantially parallel plane relation each to the other. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
-
-
9. A windshield indicia display system comprising:
-
multi-segment liquid crystal display means positionally located adjacent said windshield in a manner allowing external light to pass through said windshield for impingement upon and through said liquid crystal display means; means for reflecting said light passing through said liquid crystal display means in a substantially reverse path displacement, said reflecting means including a polarizing filter element for substantially blocking polarized light vector components in a first direction and transmitting polarized light vector components in a second direction; and
,means for electrically energizing selected display segments in accordance with indicia to be displayed upon said windshield whereby said reflected light passing through said liquid crystal display will be polarized in accordance with said indicia. - View Dependent Claims (10, 11, 12, 13, 14, 15, 16, 17)
-
Specification