LED ILLUMINATION DEVICE WITH CUBIC ZIRCONIA LENS

• US 20100020547A1
• Filed: 10/05/2009
• Published: 01/28/2010
• Est. Priority Date: 02/10/2005
• Status: Abandoned Application

• Current Assignee: Deep Sea Power & Light Incorporated
• Original Assignee: Deep Sea Power & Light Incorporated
• Inventors: Olsson, Mark S.
• Application Number:
  US12/573,788
• Publication Number:
  US 20100020547A1
• Time in Patent Office: Days
• US Class Current: 362/311.20
• CPC Class Codes: F21K 9/69 Details of refractors forming part of the light source
• CPC Class Codes: F21V 5/041 Ball lenses
• CPC Class Codes: F21W 2107/20 for water vehicles
• CPC Class Codes: F21Y 2115/10 Light-emitting diodes [LED]
• CPC Class Codes: G03B 2215/0567 Solid-state light source, e.g. LED, laser
• CPC Class Codes: H01L 2924/00 Indexing scheme for arrangements or methods for connecting or disconnecting semiconductor or solid-state bodies as covered by H01L24/00
• CPC Class Codes: H01L 2924/0002 Not covered by any one of groups H01L24/00, H01L24/00 and H01L2224/00
• CPC Class Codes: H01L 33/58 Optical field-shaping elements

Abstract

A lens element has a curved surface mounted adjacent an LED for improving the light transmission efficiency and the dispersal pattern of radiation emitted by the LED.

Claims

1-52. -52. (canceled)

53. An illumination device, comprising:

a light emitting diode;

a generally hemispherical shaped lens having a flat surface positioned adjacent to a light emitting surface face of the light emitting diode; and

the hemispherical shaped lens having an index of refraction relative to light emitted by the diode greater than about 1.65.

54. The illumination device of claim 53 wherein the flat surface of the hemispherical shaped lens is in contact with the light emitting surface face of the light emitting diode.

55. The illumination device of claim 53 wherein the flat surface of the hemispherical shaped lens is positioned within a predetermined distance from the light emitting surface face of the light emitting diode, the predetermined distance being less than or equal to a diameter of the hemispherical shaped lens.

56. The illumination device by claim 53 and further comprising an intervening optically transparent material selected from the group consisting of fluid, grease, gel and elastomer having an index of refraction of less than about 1.50, the material filling a space between the flat surface of the hemispherical lens and the light emitting surface face of the light emitting diode.