Cluster mount for high intensity LEDs

• US 5,083,192 A
• Filed: 04/30/1990
• Issued: 01/21/1992
• Est. Priority Date: 04/30/1990
• Status: Expired due to Fees

• Current Assignee: Kulicke & Soffa Investments, Inc.
• Original Assignee: Kulicke and Soffa Industries Incorporated
• Inventors: Rzeznik, Josef, Foran, Raymond E.
• Primary Examiner(s): James, Andrew J.
• Assistant Examiner(s): CLARK, SHEILA V
• Application Number:
  US07/516,470
• Time in Patent Office: 631 Days
• Field of Search: 357/17, 357/19, 357/30, 357/74, 340/782, 439/541, 313/500
• US Class Current: 257/680
• CPC Class Codes: F21K 9/00 Light sources using semiconductor devices as light-generating elements, e.g. using light-emitting diodes [LED] or lasers
• 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 33/60 Reflective elements

Abstract

A light concentrating cluster mount for super bright light emitting diodes is provided. The cluster mount is provided with a plurality of LED receivers therein. Said cluster mount has a central axis and each of the LED receivers has a focus axis displaced from the central axis and is focused to cross the central axis at a predetermined distance from the cluster mount so that the side light and the frontal light emitted from each of the light emitting diodes is refocused on to area to be illuminated at a predetermined distance from the cluster mount.

Claims

1. A light emitting diode cluster mount for concentrating light being emitted from super bright light emitting diode chips that are bonded to a base electrode and encapsulated in a transparent carrier, comprising:

a cluster mount having a plurality of diode receivers therein,

said cluster mount having a central axis and each of said diode receivers having a focus axis displaced from said central axis and focused to cross said central axis at predetermined distance from said cluster mount,

said diode receivers each comprising an adjustable sleeve portion and a tapered reflector portion,

means for positioning said light emitting diode chips at a position adjacent said tapered reflector portion so that the light emitting from the sides of each diode semiconductor is reflected and refocused along its focus axis, and

support means extending from the rear of said mount for attaching said cluster mount to a support structure.

2. A light emitting diode cluster mount as set forth in claim 1 wherein said tapered reflector portion of said diode receivers each comprises a truncated cone.

3. A light emitting diode cluster mount as set forth in claim 2 wherein said truncated cone is provided with an included angle between 50°

and 75°

.

4. A light emitting diode cluster mount as set forth in claim 2 which includes super bright light emitting diodes of the type which emit an annular ring of side light and wherein where said truncated cone is deeper than the width of said annular ring of side light.

5. A light emitting diode cluster mount as set forth in claim 1 wherein said diode receivers comprise an adjustable sleeve portion which is provided with a male threaded end portion and said tapered reflector portion is provided with a female threaded end portion so that said diodes semiconductor is adjustably located along the focal axis relative to said tapered reflector portion.

6. A light emitting diode cluster mount as set froth in claim 5 wherein said adjustable sleeve portion is provided with an internal flange stop adapted to position a light emitting diode therein.

7. A light concentrating mount for super bright light emitting diodes said super bright light emitting diodes each being of the type having a semiconductor chip bonded to a base electrode and encapsulated in a transparent carrier comprising:

a cluster mount having a plurality of apertures therein,

each said aperture having a reflector portion and a cylindrical recess position adapted to adjustably receive a light emitting diode so that the diode semiconductor chip in the transparent carrier extends into and is adjacent to the reflector portion, and

each said reflector portion having a tapered side wall adapted to reflect and converge all of the light being emitted directly from the sides each of said diode semi-conductor chip, and to refocus and converge the reflected light along the focus axis of each said light emitting diode onto a central small area.