Abstract:
According to one embodiment of the present invention, an electrochromic rearview mirror assembly for a vehicle includes an electrochromic mirror (110, 920) having a variable reflectivity, a glare sensor (160, 234) for sensing levels of light directed towards the front element from the rear of the vehicle, an ambient sensor (232) for sensing levels of ambient light, a display (146, 170) positioned behind the partially transmissive, partially reflective portion of the reflector for displaying information therethrough; and a control circuit (230, 900) coupled to the sensors and the display. The control circuit determines whether daytime or nightime conditions are present as a function of the ambient light level sensed by the glare sensor to control a contrast ratio of light originating from the display and light reflecting from the partially transmissive, partially reflective area of the reflector.
Abstract:
A variable reflectance rearview mirror for a vehicle, comprising: (a) a variable reflectance mirror element having a reflectivity that varies in response to an applied potential so as to exhibit at least a high reflectance state and a low reflectance state; (b) a self-cleaning, hydrophilic coating applied to a front surface of said mirror element; and (c) an acid resistant layer applied to a surface of the self-cleaning hydrophilic coating.
Abstract:
A variable reflectance rearview mirror for a vehicle, comprising: (a) a variable reflectance mirror element having a reflectivity that varies in response to an applied potential so as to exhibit at least a high reflectance state and a low reflectance state; (b) a self- cleaning, hydrophilic coating (300) applied to a front surface of said mirror element having a controlled surface morphology (312).
Abstract:
According to one embodiment of the present invention, an electrochromic rearview mirror assembly for a vehicle includes an electrochromic mirror (110, 920) having a variable reflectivity, a glare sensor (160, 234) for sensing levels of light directed towards the front element from the rear of the vehicle, an ambient sensor (232) for sensing levels of ambient light, a display (146, 170) positioned behind the partially transmissive, partially reflective portion of the reflector for displaying information therethrough; and a control circuit (230, 900) coupled to the sensors and the display. The control circuit determines whether daytime or nightime conditions are present as a function of the ambient light level sensed by the glare sensor to control a contrast ratio of light originating from the display and light reflecting from the partially transmissive, partially reflective area of the reflector.
Abstract:
Electro-optic elements are becoming commonplace in a number of vehicular and architectural applications. Various electro-optic element configurations provide variable transmittance and or variable reflectance for windows and mirrors. The present invention relates to various thin-film coatings, electro-optic elements and assemblies incorporating these elements.
Abstract:
An electrochromic element comprises a first substrate having a first surface and a second surface opposite the first surface, a second substrate in spaced-apart relationship to the first substrate and having a third surface facing the second surface and a fourth surface opposite the third surface, and an electrochromic medium located between the first and second substrates, wherein the medium has a light transmittance that is variable upon application of an electric field thereto. The element further comprises a transparent electrode layer covering at least a portion of at least a select one of the first surface, the second surface, the third surface, and the fourth surface, wherein the transparent electrode layer comprises an insulator/metal/insulator stack. The materials utilized to construct the insulator/metal/insulator stack are selected to optimize optical and physical properties of the element such as reflectivity, color, electrical switch stability, and environmental durability.