Elliptical and dual parabolic laser driven sealed beam lamps

• US 9,741,553 B2
• Filed: 11/11/2015
• Issued: 08/22/2017
• Est. Priority Date: 05/15/2014
• 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): Patel, Ashok
• Application Number:
  US14/938,353
• Publication Number:
  US 20160086788A1
• Time in Patent Office: 650 Days
• Field of Search: None
• CPC Class Codes: H01J 61/025 Associated optical elements
• CPC Class Codes: H01J 61/16 having helium, argon, neon, krypton, or xenon as the principle constituent
• CPC Class Codes: H01J 61/24 Means for obtaining or maintaining the desired pressure within the vessel
• CPC Class Codes: H01J 61/30 Vessels; Containers
• CPC Class Codes: H01J 61/33 Special shape of cross-section, e.g. for producing cool spot
• CPC Class Codes: H01J 61/35 provided with coatings on the walls thereof; Selection of materials for the coatings using coloured coatings H01J61/40; using luminescent coatings H01J61/42
• 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 65/042 by an external electromagnetic field

Abstract

The invention is directed to a sealed high intensity illumination device configured to receive a laser beam from a laser light source. A sealed chamber is configured to contain an ionizable medium. The chamber includes a reflective chamber interior surface having a first parabolic contour and parabolic focal region, a second parabolic contour and parabolic focal region, and an interface surface. An ingress surface is disposed within the interface surface configured to admit the laser beam into the chamber, and an egress surface disposed within the interface surface configured to emit high intensity light from the chamber. The first parabolic contour is configured to reflect light from the first parabolic focal region to the second parabolic contour, and the second parabolic contour is configured to reflect light from the first parabolic contour to the second parabolic focal region.

Claims

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

a sealed chamber configured to contain an ionizable medium, the chamber further comprising;

a reflective chamber interior surface further comprising;

a substantially elliptical contour having a first elliptical focal region disposed within the chamber and a second elliptical focal region disposed outside the chamber; and

an interface surface configured to admit the laser beam into the chamber and to emit high intensity light from the chamber;

a folding mirror comprising a first surface and a second surface; and

a first lens disposed between the folding mirror and the first elliptical focal region configured to focus the laser beam toward the first elliptical focal region; and

wherein the second elliptical focal region is disposed between the first lens and the folding mirror, the elliptical contour is configured to reflect light from the first elliptical focal region through the second elliptical focus region to the folding mirror, and the folding mirror first surface is oriented toward the chamber and is configured to transmit a first wavelength emitted from the chamber and to reflect a second wavelength.

2. The sealed high intensity illumination device of claim 1, wherein the first wavelength corresponds to a wavelength of the high intensity light and the second wavelength corresponds to a wavelength of the laser beam.

3. The sealed high intensity illumination device of claim 1, wherein the second wavelength corresponds to a wavelength of the high intensity light and the first wavelength corresponds to a wavelength of the laser beam.

4. The sealed high intensity illumination device of claim 1, where the first lens is integral to the interface surface.

5. The sealed high intensity illumination device of claim 1, where the first lens is disposed between the interface surface and the folding mirror.

6. The sealed high intensity illumination device of claim 1, where the first lens is disposed between the interface surface and the first elliptical focal region.

7. The sealed high intensity illumination device of claim 1, wherein the sealed chamber body is selected from the group consisting of quartz, sapphire, oxygen free copper, aluminum, silver, and reflecting metal.

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

9. The sealed high intensity illumination device of claim 7, wherein the sealed chamber body is copper free.

10. The sealed high intensity illumination device of claim 1, wherein the first lens is further configured to collimate the high intensity light emitted from the chamber.

11. The sealed high intensity illumination device of claim 1, further comprising a second lens configured to receive the high intensity light emitted from the chamber after passing through the folding mirror, wherein the second lens is further configured to collimate and/or expand the high intensity light.

12. The sealed high intensity illumination device of claim 1, further comprising a second lens configured to receive the high intensity light emitted from the chamber after being reflected by the folding mirror, wherein the second lens is further configured to collimate and/or expand the high intensity light.