Laser driven sealed beam lamp with improved stability

• US 10,008,378 B2
• Filed: 03/14/2016
• Issued: 06/26/2018
• Est. Priority Date: 05/14/2015
• Status: Active Grant

• Current Assignee: Excelitas Technologies Corporation (Excelitas Technologies Holdings LLC)
• Original Assignee: Excelitas Technologies Corporation (Excelitas Technologies Holdings LLC)
• Inventors: Blondia, Rudi
• Primary Examiner(s): Green, Tracie Y
• Application Number:
  US15/069,242
• Publication Number:
  US 20160336168A1
• Time in Patent Office: 834 Days
• CPC Class Codes: H01J 2893/0063 Plasma light sources
• CPC Class Codes: H01J 61/073 for high-pressure discharge lamps
• CPC Class Codes: H01J 61/10 Shields, screens, or guides for influencing the discharge
• CPC Class Codes: H01J 61/16 having helium, argon, neon, krypton, or xenon as the principle constituent
• CPC Class Codes: H01J 61/28 Means for producing, introducing, or replenishing gas or vapour during operation of the lamp
• CPC Class Codes: H01J 61/302 characterised by the material of the vessel
• CPC Class Codes: H01J 61/40 by light filters; by coloured coatings in or on the envelope
• CPC Class Codes: H01J 61/54 Igniting arrangements, e.g. promoting ionisation for starting
• CPC Class Codes: H01J 65/04 Lamps in which a gas filling is excited to luminesce by an external electromagnetic field or by external corpuscular radiation, e.g. for indicating plasma display panels
• CPC Class Codes: H01J 9/247 specially adapted for gas-discharge lamps

Abstract

A sealed high intensity illumination device configured to receive a laser beam from a laser light source and method for making the same are disclosed. The device includes a sealed cylindrical chamber configured to contain an ionizable medium. The chamber has a cylindrical wall, with an ingress and an egress window disposed opposite the ingress window. A tube insert is disposed within the chamber formed of an insulating material. The insert is configured to receive the laser beam within the insert inner diameter.

Claims

1. A sealed high intensity illumination emitting device configured to receive a laser beam from a laser light source, the device comprising:

a sealed cylindrical chamber configured to contain an ionizable medium, the chamber comprising and bounded by a cylindrical wall with an inner diameter, an ingress window transparent to a first wavelength range and an egress window disposed opposite the ingress window transparent to a second wavelength range;

a tube insert disposed within the chamber formed of an insulating material comprising a walled region separating an insert interior portion from an insert exterior portion, an ingress end abutting the chamber ingress window, and an egress end abutting the chamber egress window,

wherein the insert is configured to receive the laser beam within the insert inner diameter.

2. The device of claim 1, wherein a cross section shape of the insert is circular comprising an insert outer diameter, and an insert inner diameter, and the insert outer diameter is smaller than the chamber inner diameter.

3. The device of claim 1, wherein the insulating material comprises quartz.

4. The device of claim 1, wherein the insert is configured to allow the ionizable medium to flow between the insert interior portion and the insert exterior portion.

5. The device of claim 1, further comprising:

a first electrode extending into the insert interior portion through a first insert side aperture; and

a second electrode extending into the insert interior portion through a first insert side aperture substantially opposite the first electrode.

6. The device of claim 1, further comprising a passive non-electrode igniting agent incorporated into the insulating insert.

7. The device of claim 1, wherein the ingress window and egress window are each formed from a material selected from a group consisting of quartz glass and sapphire.

8. The device of claim 1, wherein the sealed chamber body comprises nickel-cobalt ferrous alloy.

9. The device of claim 1, wherein the sealed chamber body comprises sapphire and/or quartz.

10. The device of claim 1, wherein ionizable medium is selected from the group consisting of Xenon gas, Argon gas, and Krypton gas.

11. The device of claim 1, wherein the egress window comprises a coating of a reflective material configured to reflect a specific range of wavelengths.

12. The device of claim 1, wherein the egress window comprises a coating of a material configured to pass a specific range of wavelengths.

13. The device of claim 1, further comprising a wall extending portion protruding into the chamber from the chamber cylindrical wall, wherein the insert is disposed within the wall extending portion.

14. The device of 13, wherein the wall extending portion comprises a circular cross section shape comprising a center axis which is offset from a center axis of the chamber cylindrical wall.

15. The device of 13, wherein the wall extending portion comprises a non-circular cross section shape.