ILLUMINATION DEVICE HAVING REMOTELY POWERED LIGHTGUIDE

• US 20150062961A1
• Filed: 10/20/2014
• Published: 03/05/2015
• Est. Priority Date: 10/30/2009
• Status: Active Grant

• Current Assignee: 3M Innovative Properties Company (3M Company)
• Original Assignee: 3M Innovative Properties Company (3M Company)
• Inventors: Sherman, Audrey A., Schaffer, Kevin R., Meis, Michael A., Widagdo, Soemantri
• Granted Patent: US 9,476,637 B2
• Time in Patent Office: Days
• US Class Current: 362/602
• CPC Class Codes: A44C 15/0015 Illuminated or sound-producing jewellery
• CPC Class Codes: A44C 5/14 characterised by the way of fastening to a wrist-watch or the like
• CPC Class Codes: A61N 2005/0645 Applicators worn by the patient
• CPC Class Codes: F21S 9/03 rechargeable by exposure to light
• CPC Class Codes: F21V 23/00 Arrangement of electric circuit elements in or on lighting devices characterised by cooling arrangements F21V29/508
• CPC Class Codes: F21V 7/0091 using total internal reflection
• CPC Class Codes: F25D 27/00 Lighting arrangements in general F21
• CPC Class Codes: G02B 6/0065 Manufacturing aspects; Material aspects
• CPC Class Codes: G02B 6/0081 Mechanical or electrical aspects of the light guide and light source in the lighting device peculiar to the adaptation to planar light guides, e.g. concerning packaging
• CPC Class Codes: G02B 6/0083 Details of electrical connections of light sources to drivers, circuit boards, or the like
• CPC Class Codes: G02B 6/0095 Light guides as housings, housing portions, shelves, doors, tiles, windows, or the like
• CPC Class Codes: G04G 19/00 Electric power supply circuits specially adapted for use in electronic time-pieces
• CPC Class Codes: H02J 2310/23 The load being a medical device, a medical implant, or a life supporting device
• CPC Class Codes: H02J 50/005 Mechanical details of housing or structure aiming to accommodate the power transfer means, e.g. mechanical integration of coils, antennas or transducers into emitting or receiving devices
• CPC Class Codes: H02J 50/10 using inductive coupling
• CPC Class Codes: H02J 50/15 using ultrasonic waves
• CPC Class Codes: H02J 50/20 using microwaves or radio frequency waves
• CPC Class Codes: H02J 50/30 using light, e.g. lasers
• CPC Class Codes: H02J 50/40 using two or more transmitting or receiving devices H02J50/50 takes precedence

Abstract

An illumination device is disclosed, having a lightguide optically coupled to a light source and a transducer for supplying power to the light source by converting energy received from a remote transmitter. Energy received from a remote transmitter can comprise radiofrequency waves, microwaves, infrared radiation, visible light, ultraviolet light, sunlight, sound waves or heat.

Claims

1. A refrigeration illumination system, comprising

a light source;

a lightguide optically coupled to the light source; and

a transducer configured to power the light source by converting energy received from a remote transmitter;

wherein at least one of the lightguide and the remote transmitter is located within a shelf.

2. The refrigeration illumination system of claim 1, wherein the light source, the lightguide, and the transducer are located within a product label.

3. The refrigeration illumination system of claim 1, wherein the remote transmitter is located in the shelf.

4. The refrigeration illumination system of claim 1, wherein the lightguide is located within the shelf.

5. An illumination device, comprising:

a light source;

a film lightguide optically coupled to the light source; and

a transducer configured to power the light source by converting energy received from a remote transmitter.

6. The illumination device of claim 5, wherein the film lightguide is a rectangular layer.

7. An illumination device, comprising:

a light source;

a lightguide optically coupled to the light source;

a viscoelastic cladding layer disposed on the lightguide; and

a transducer configured to power the light source by converting energy received from a remote transmitter.

8. The illumination device of claim 7, wherein the viscoelastic cladding layer includes a pressure sensitive adhesive.