Illumination display with enhanced illumination edge lighting

• US 7,889,290 B2
• Filed: 05/05/2008
• Issued: 02/15/2011
• Est. Priority Date: 05/05/2008
• Status: Expired due to Fees

• Current Assignee: Brookstone Purchasing Incorporated (Bebe Stores, Inc.)
• Original Assignee: Brookstone Purchasing Incorporated (Bebe Stores, Inc.)
• Inventors: Mills, Stephen B.
• Primary Examiner(s): Nelms; David
• Assistant Examiner(s): Vu; Phu
• Application Number:
  US12/151,383
• Publication Number:
  US 20090273730A1
• Time in Patent Office: 1,016 Days
• Field of Search: 349 65- 67, 349/73
• US Class Current: 349/65
• CPC Class Codes: G01K 1/06 Arrangements for facilitating reading, e.g. illumination, magnifying glass
• CPC Class Codes: G01K 2207/06 for preparation purposes
• CPC Class Codes: G02B 6/0058 varying in density, size, shape or depth along the light guide
• CPC Class Codes: G02B 6/006 to produce indicia, symbols, texts or the like
• CPC Class Codes: G02B 6/0086 Positioning aspects
• CPC Class Codes: G02F 1/133615 Edge-illuminating devices, i.e. illuminating from the side

Abstract

In general, an illumination display includes a light transmitting panel that provides enhanced illumination edge lighting. One or more light sources are optically coupled into an edge of the light transmitting panel to illuminate the light transmitting panel. The light transmitting panel refracts and reflects light such that a greater intensity of light may be emitted from one or more enhanced illumination portions, such as a raised enhanced illumination portion, of the light transmitting panel. The light source(s) may emit light of different colors corresponding to different conditions such that the illumination display indicates a condition by illuminating with the color corresponding to the condition. The illumination display may be used in various devices including, but not limited to, a device for checking the temperature of food.

Claims

1. An illumination display comprising:

a light transmitting panel having sides and an edge, wherein the edge of the panel includes at least one light coupling portion and wherein at least one of the sides includes at least one enhanced illumination portion, wherein the enhanced illumination portion includes a raised enhanced illumination portion extending from one of the sides proximate the light coupling portion of the edge;

at least one light source optically coupled into the light coupling portion of the edge of the light transmitting panel, wherein the light transmitting panel is configured to refract and reflect the coupled light such that an intensity of the light emitted from the at least one enhanced illumination portion is greater than an intensity of the light emitted from other portions of the light transmitting panel; and

at least one liquid crystal display (LCD) panel disposed on at least a portion of the light transmitting panel other than the raised enhanced illumination portion, wherein the light transmitting panel is configured to provide backlighting for the LCD panel, and wherein the raised enhanced illumination portion forms a frame around at least a portion of the LCD panel.

2. The illumination display of claim 1 wherein the light source includes a light emitting diode (LED).

3. The illumination display of claim 1 wherein the light coupling portion is below the raised enhanced illumination portion.

4. The illumination display of claim 1 wherein the light transmitting panel includes surface texturing on at least a portion of one of the sides opposite the enhanced illumination portion configured to emit the light, the surface texturing providing an increased surface area in a line of site of the light source.

5. The illumination display of claim 1 wherein the at least one light source includes a plurality of light sources coupled into respective light coupling portions at different locations on the edge of the light transmitting panel.

6. The illumination display of claim 1 wherein the light transmitting panel is made of a material with a refractive index in the range of about 1.4 to 1.6.

7. The illumination display of claim 1 wherein the light transmitting panel is made of polycarbonate.

8. The illumination display of claim 1 wherein the light transmitting panel is made of a material selected from the group consisting of acrylic, polycarbonate, and ABS.

9. The illumination display of claim 1 wherein the at least one light source is configured to emit light of different colors in response to different conditions.

10. The illumination display of claim 1 wherein the light transmitting panel includes a reflective material disposed on at least a back side of the light transmitting panel.

11. An apparatus for determining food temperature, the apparatus comprising:

a piercing element;

a temperature sensor thermally coupled to the piercing element and configured to sense a temperature of an item contacting the piercing element;

a handle portion coupled to the piercing element; and

an illumination display integral with the handle portion, the illumination display comprising;

a light transmitting panel having sides and an edge, wherein the edge of the panel includes at least one light coupling portion and wherein at least one of the sides includes at least one enhanced illumination portion, wherein the enhanced illumination portion includes a raised enhanced illumination portion extending from one of the sides proximate the light coupling portion of the edge;

at least one light source optically coupled into the light coupling portion of the edge of the light transmitting panel, wherein the light transmitting panel is configured to refract and reflect the coupled light such that an intensity of the light emitted from the at least one enhanced illumination portion is greater than an intensity of the light emitted from other portions of the light transmitting panel, and wherein the at least one light source is configured to emit light of different colors in response to a level of the temperature sensed by the temperature sensor; and

at least one liquid crystal display (LCD) panel disposed on at least a portion of the light transmitting panel other than the raised enhanced illumination portion, wherein the raised enhanced illumination portion forms a frame around at least a portion of the LCD panel.

12. The apparatus of claim 11 wherein the LCD panel is configured to display at least a temperature.

13. The apparatus of claim 11 wherein the light transmitting panel includes surface texturing on at least a portion of one of the sides opposite the enhanced illumination portion configured to emit the light, the surface texturing providing an increased surface area in a line of site of the light source.

14. The apparatus of claim 11 wherein the at least one light source includes a plurality of light sources coupled into respective light coupling portions at different locations on the edge of the light transmitting panel.

15. An apparatus comprising:

a display mounting portion; and

an illumination display mounted in the display mounting portion, the illumination display comprising;

a light transmitting panel having sides and an edge, wherein the edge of the panel includes at least one light coupling portion and wherein at least one of the sides includes at least one enhanced illumination portion, wherein the enhanced illumination portion includes a raised enhanced illumination portion extending from one of the sides proximate the light coupling portion of the edge;

at least one light source optically coupled into the light coupling portion of the edge of the light transmitting panel, wherein the light transmitting panel is configured to refract and reflect the coupled light such that an intensity of the light emitted from the at least one enhanced illumination portion is greater than an intensity of the light emitted from other portions of the light transmitting panel, and wherein the at least one light source is configured to emit light of different colors representing information; and

at least one liquid crystal display (LCD) panel disposed on at least a portion of the light transmitting panel other than the raised enhanced illumination portion, wherein the raised enhanced illumination portion forms a frame around at least a portion of the LCD panel.

16. The apparatus of claim 15 further comprising a sensor configured to sense conditions, and wherein the at least one light source is configured to emit light of different colors in response to different conditions sensed by the sensor.