LIGHT SOURCE PACKAGE

• US 20130147353A1
• Filed: 12/12/2011
• Published: 06/13/2013
• Est. Priority Date: 12/12/2011
• Status: Abandoned Application

• Current Assignee: Microsoft Technology Licensing LLC (Microsoft Corporation)
• Original Assignee: Microsoft Corporation
• Inventors: Mandelboum, David, Pellman, Asaf, Yahav, Giora
• Application Number:
  US13/323,658
• Publication Number:
  US 20130147353A1
• Time in Patent Office: Days
• US Class Current: 315/119
• CPC Class Codes: H05B 45/12 using optical feedback

Abstract

A light source package for selectively interrupting power to a light source is provided. An optical element is positioned to reflect a reflected portion of the light from the light source. The reflected portion impinges upon a base that includes a roof panel with a light source side and a sensor side that is opposite to the light source side. The light source side of the roof panel receives the reflected portion of the light and transmits a transmitted portion of the light through the roof panel. The sensor side of the roof panel includes a recess in which a sensing component is located. The sensing component receives the transmitted portion of the light and is be configured to interrupt power to the light source when the transmitted portion of the light is below a threshold.

Claims

1. A light source package for housing a light source and selectively interrupting power to the light source, the light source package comprising:

a low inductance connector on which the light source is mounted;

an optical element positioned opposite to an emitting side of the light source to receive source light propagating from the emitting side of the light source, the optical element reflecting a reflected portion of the source light;

a base positioned opposite to a non-emitting side of the light source that is opposite to the emitting side of the light source, the base comprising a roof panel that includes a light source side and a sensor side that is opposite to the light source side, the light source side receiving the reflected portion of the source light, the sensor side including a recess; and

a sensing component positioned within the recess of the sensor side of the roof panel, the sensing component receiving a transmitted portion of the reflected portion of the source light that is transmitted through the roof panel, the sensing component configured to interrupt power to the light source when the transmitted portion of the source light is below a threshold.

2. The light source package of claim 1, wherein the sensing component is a photodiode.

3. The light source package of claim 1, wherein the optical element passes an illuminating portion of the source light beyond the light source package.

4. The light source package of claim 3, wherein the optical element comprises a diffusing lens.

5. The light source package of claim 1, wherein the base comprises an insulating material, and the low inductance connector is potted in the base.

6. The light source package of claim 5, wherein the low inductance connector comprises a central conductor to which the light source is electrically connected, and at least one side conductor to which the light source is electrically connected.

7. The light source package of claim 6, wherein the central conductor further comprises a central conductor extension that extends from the base, the at least one side conductor comprises a side conductor extension that extends from the base, and the central conductor extension and the side conductor extension electrically connect the light source to a power supply.

8. The light source package of claim 1, wherein the roof panel comprises a thickness that corresponds to a sensitivity of the sensing component.

9. The light source package of claim 1, wherein the roof panel comprises a filter element that filters a wavelength of the reflected portion of the source light received at the light source side of the roof panel.

10. The light source package of claim 1, further comprising a lens tube that houses at least the low inductance connector, the optical element, the base, and the sensing component.

11. The light source package of claim 1, wherein the optical element is a first optical element, further comprising a second optical element positioned between the first optical element and the light source.

12. A method for selectively interrupting power to a light source mounted on a low inductance connector in a light source package, comprising:

transmitting source light from an emitting side of the light source toward an optical element positioned opposite to the emitting side of the light source;

reflecting a reflected portion of the source light;

receiving the reflected portion of the source light at a light source side of a roof panel, the roof panel including a sensor side having a recess that is opposite to the light source side, the roof panel embodied in a base that is positioned opposite to a non-emitting side of the light source that is opposite to the emitting side of the light source;

receiving at a sensing component a transmitted portion of the reflected portion of the source light that is transmitted through the roof panel, the sensing component positioned within the recess of the sensor side of the roof panel; and

interrupting power to the light source when the transmitted portion of the source light is below a threshold.

13. The method of claim 12, further comprising passing an illuminating portion of the source light through the optical element and beyond the light source package.

14. The method of claim 12, further comprising filtering a wavelength of the reflected portion of the source light received at the light source side of the roof panel.

15. The method of claim 12, further comprising focusing the reflected portion of the source light toward the sensing component.

16. The method of claim 12, wherein the sensing component is a photodiode.

17. The method of claim 12, wherein the base comprises an insulating material.

18. The method of claim 12, further comprising controlling an amount of the transmitted portion of the reflected portion of the source light that is received by the sensing component by modifying one or more of a shape, thickness, and material property of the roof panel.

19. A light source package for housing a light source and selectively interrupting power to the light source, the light source package comprising:

a low inductance connector on which the light source is mounted;

an optical element positioned opposite to an emitting side of the light source to receive source light propagating from the emitting side of the light source, the optical element reflecting a reflected portion of the source light and passing an illuminating portion of the source light beyond the light source package;

a base positioned opposite to a non-emitting side of the light source that is opposite to the emitting side of the light source, the base comprising a roof panel that includes a light source side and a sensor side that is opposite to the light source side, the light source side receiving the reflected portion of the source light, the sensor side including a recess;

a photodiode positioned within the recess of the sensor side of the roof panel, the photodiode receiving a transmitted portion of the reflected portion of the source light that is transmitted through the roof panel, the photodiode configured to interrupt power to the light source when the transmitted portion of the source light is below a threshold; and

a lens tube housing at least the low inductance connector, the optical element, the base, and the photodiode.

20. The light source package of claim 19, wherein the base comprises an insulating material, and the low inductance connector is potted in the base and comprises a central conductor to which the light source is electrically connected and at least one side conductor to which the light source is electrically connected.