Surface mounted LED package

• US 4,935,856 A
• Filed: 10/05/1989
• Issued: 06/19/1990
• Est. Priority Date: 10/05/1989
• Status: Expired

• Current Assignee: Dialight Corporation (Dialight PLC)
• Original Assignee: Dialight Corporation (Dialight PLC)
• Inventors: Dragoon, Daniel
• Primary Examiner(s): Ostrager, Allen M.
• Application Number:
  US07/417,469
• Time in Patent Office: 257 Days
• Field of Search: 362/307, 362/362, 362/800
• US Class Current: 362/307
• CPC Class Codes: B60Q 1/2696 Mounting of devices using LEDs
• CPC Class Codes: F21V 19/0015 Fastening arrangements intended to retain light sources
• 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 33/486 adapted for surface mounting
• CPC Class Codes: H05K 3/301 by means of a mounting structure H05K3/325 takes precedence
• CPC Class Codes: Y10S 362/80 Light emitting diode

Abstract

The surface mounted LED package disclosed herein includes an LED having a first surface, a second surface opposite to the first surface, two electrical contacts on the first surface, and a light emitting portion in the second surface; a housing mounted on the LED and having a generally rectangular parallelepipedal shape, a first passageway extending from a first surface of the housing part way through the housing, the first passageway being sized, shaped, and positioned to receive the second surface of the LED such that the light emitting portion of the second surface faces into the first passageway, and a second passageway extending from a second surface of the housing to a third surface of the housing and communicating with the first passageway; and a lens received in the second passageway and having a first radiating surface located outside the housing and an internal reflecting surface located inside the housing above the light emitting portion of the LED in position to reflect light from the light emitting portion of the LED toward the radiating surface.

Claims

1. A surface mounted LED package comprising:

(a) an LED having;

(i) a first surface;

(ii) a second surface opposite to said first surface;

(iii) two electrical contacts on said first surface; and

(iv) a light emitting portion in said second surface;

(b) a housing mounted on said LED, said housing having;

(i) a generally rectangular parallelepipedal shape;

(ii) a first passageway extending from a first surface of said housing part way through said housing, said first passageway being sized, shaped, and positioned to receive said second surface of said LED such that said light emitting portion of said second surface faces into said first passageway; and

(iii) a second passageway extending from a second surface of said housing to a third surface of said housing and communicating with said first passageway; and

(c) a lens received in said second passageway, said lens having;

(i) a radiating surface located outside said housing and

(ii) an internal reflecting surface located inside said housing above said light emitting portion of said LED in position to reflect light from said light emitting portion of said LED toward said radiating surface.

2. A surface mounted LED package as recited in claim 1 and further comprising an opaque reflecting material located in said second passageway adjacent said internal reflecting surface.

3. A surface mounted LED package as recited in claim 1 wherein:

(a) said first passageway and said second passageway are perpendicular to each other and

(b) said internal reflecting surface of said lens is disposed at 45°

to both said first passageway and said second passageway.

4. A surface mounted LED package as recited in claim 1 wherein:

(a) said housing has a slot in its front surface extending from its second surface to its third surface and

(b) said first passageway communicates with said slot.

5. A surface mounted LED package as recited in claim 4 wherein said slot is located at the center of the edges of said second and third surfaces joining said first surface.

6. A surface mounted LED package as recited in claim 1 wherein said first passageway guides and reflects light from said LED to a light collecting surface of said lens.

7. A surface mounted LED package as recited in claim 6 wherein said second passageway has a cross section sized and shaped to accept said lens.

8. A surface mounted LED package as recited in claim 1 wherein said second passageway has a cross section sized and shaped to accept said lens.