Albert M Dedonato

US Patent:

6768264, Jul 27, 2004

Filed:

Sep 5, 2003

Appl. No.:

10/656988

Inventors:

Paul L. Beech - W. Newbury MA 01985
Albert M. DeDonato - Peabody MA 01960

International Classification:

H01J 6130

US Classification:

313634, 313623, 313636, 313110, 313113, 313246, 313284, 313285

Abstract:

A short arc lamp is optimized for improved thermal performance characteristics. The short arc lamp includes a ceramic body having a concave reflective surface formed in an upper end thereof, a base adapted to receive the base end of the ceramic body in abutting relation, and a window frame assembly positioned in abutting concentric relation with the upper end of the ceramic body. In particular, the ceramic body is formed from beryllia (beryllium oxide) which has superior thermal transfer characteristics. The lamp is further provided with a specialized coating which help keep infra-red (IR) light energy from escaping from the lamp. In one instance, the coating is an IR reflective coating placed on the window of the lamp to reflect IR light energy back into the lamp where it can be conducted outwardly through the beryllium oxide body and base. In another instance, the reflector surface of the beryllium oxide body is provided with a dichroic coating which reflects visible light, while allowing IR energy to pass through. Accordingly, the IR energy passes through to the ceramic body and is transferred outwardly through the base.

US Patent:

20030098638, May 29, 2003

Filed:

Nov 27, 2001

Appl. No.:

09/995426

Inventors:

Paul Beech - W. Newbury MA, US
Albert DeDonato - Peabody MA, US

International Classification:

H01K001/26
H01K001/30
H01J005/16
H01J061/40

US Classification:

313/113000

Abstract:

An improved housing assembly for a short arc lamp includes a ceramic body having a concave reflective surface formed in an upper end thereof, a base adapted to receive the base end of the ceramic body in abutting relation, and a window frame assembly positioned in abutting concentric relation with the upper end of the ceramic body. The base is integrally formed with a shoulder ring adapted to receive and seal the base end of the ceramic body. The window frame is integrally formed to include an annular flange having a substantially U-shaped cross-section and three circumferentially spaced cathode support arms extending radially inwardly therefrom. The cathode support arms further include an integrally formed cathode mount at the terminal ends thereof. The integral formation of the cathode support arms with the window frame and integral formation of the base shoulder ring with the base both cooperate to significantly simplify assembly and manufacturing by eliminating at least 2-3 brazing steps in the assembly process.

US Patent:

20030098652, May 29, 2003

Filed:

Nov 27, 2001

Appl. No.:

09/995453

Inventors:

Paul Beech - W. Newbury MA, US
Albert DeDonato - Peabody MA, US

International Classification:

H01J061/35
H01J017/16

US Classification:

313/634000

Abstract:

A short arc lamp is optimized for improved thermal performance characteristics. The short arc lamp includes a ceramic body having a concave reflective surface formed in an upper end thereof, a base adapted to receive the base end of the ceramic body in abutting relation, and a window frame assembly positioned in abutting concentric relation with the upper end of the ceramic body. In particular, the ceramic body is formed from beryllia (beryllium oxide) which has superior thermal transfer characteristics. The lamp is further provided with a specialized coating which help keep infra-red (IR) light energy from escaping from the lamp. In one instance, the coating is an IR reflective coating placed on the window of the lamp to reflect IR light energy back into the lamp where it can be conducted outwardly through the beryllium oxide body and base. In another instance, the reflector surface of the beryllium oxide body is provided with a dichroic coating which reflects visible light, while allowing IR energy to pass through. Accordingly, the IR energy passes through to the ceramic body and is transferred outwardly through the base.