Functional application of photochromic compound materials to products
First Claim
1. A method of selectively altering the appearance of a device having at least one photochromic compound, comprising the steps of:
- energizing an ultraviolet light source forming a portion of the device;
exposing at least a portion of the device having the at least one photochromic compound to the ultraviolet light source; and
causing the photochromic compound in the device to be immune from external ultraviolet sources.
4 Assignments
0 Petitions
Accused Products
Abstract
A device (50) capable of selectively altering its appearance can include a housing portion (64) of the device having at least one photochromic compound and an ultraviolet light source (60) forming a portion of the device for exposing the portion of the device having the photochromic compound to the ultraviolet light source. A reaction by the photochromic compound can provide or serve as a status indicator for the device. The device can be any number of devices such as a portable communication device, a personal digital assistant, a laptop computer, a camera, a GPS device, a printer, a camcorder, a vehicle, a toy, a personal hygiene device, a watch, a calculator, and a writing instrument for example. The device can be formed so that reactions by the photochromic compounds within the device are controlled solely by the ultraviolet light sources (54 and 60) within the device.
27 Citations
23 Claims
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1. A method of selectively altering the appearance of a device having at least one photochromic compound, comprising the steps of:
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energizing an ultraviolet light source forming a portion of the device; exposing at least a portion of the device having the at least one photochromic compound to the ultraviolet light source; and causing the photochromic compound in the device to be immune from external ultraviolet sources. - View Dependent Claims (2, 3, 4, 5, 6)
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7. A device capable of selectively altering its appearance, comprising:
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a housing portion of the device having at least one photochromic compound; and an ultraviolet light source forming a portion of the device for exposing at least a portion of the device having the at least one photochromic compound to the ultraviolet light source; wherein the device is arranged and constructed to have the photochromic compound in the device to be immune from external ultraviolet sources. - View Dependent Claims (8, 9, 10, 11, 12, 13, 14, 15, 16, 17)
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18. A device capable of altering its appearance, comprising:
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a housing portion of the device having at least one photochromic compound; at least one light sensor at least partially within the housing portion; and an internal ultraviolet source for selectively changing the color of the housing portion; wherein the device is arranged and constructed to have the photochromic compound in the device to be immune from external ultraviolet sources. - View Dependent Claims (19, 20)
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21. An electronic device, comprising
a housing; -
a display lens and a plurality of buttons within apertures of the housing; and at least one photochromic compound on at least one among the housing, the display lens and the plurality of buttons, wherein exposure to ultraviolet light causes the at least one photochromic compound to change color; wherein the device is arranged and constructed to have the photochromic compound in the device to be immune from external ultraviolet sources. - View Dependent Claims (22, 23)
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Specification