David K Bean

US Patent:

7701991, Apr 20, 2010

Filed:

Sep 22, 2005

Appl. No.:

11/233494

Inventors:

David M. Bean - Middleton MA, US
Yi Qian - Acton MA, US
Daniel E. Pulver - North Reading MA, US

Assignee:

SemiNex Corporation - Peabody MA

International Classification:

H01S 3/04
H01S 3/14
H01L 31/00

US Classification:

372 4301, 372 39, 372 34, 257 14

Abstract:

A semiconductor laser diode using the aluminum gallium, arsenide, gallium indium arsenide phosphide, indium phosphide, (AlGaInAs/GaInAsP/InP) material system and related combinations is disclosed. Both the design of the active layer and the design of the optical cavity are optimized to minimize the temperature rise of the active region and to minimize the effects of elevated active layer temperature on the laser efficiency. The result is a high output power semiconductor laser for the wavelengths between 1. 30 and 1. 61 micrometers for the pumping of erbium doped waveguide devices or for direct use in military, medical, or commercial applications.

US Patent:

D649636, Nov 29, 2011

Filed:

Jan 21, 2011

Appl. No.:

29/383736

Inventors:

David M. Bean - Middleton MA, US
Christopher R. Rafferty - Cambridge MA, US
John J. Callahan - Wilmington MA, US

Assignee:

SemiNex Corporation - Peabody MA

International Classification:

2402

US Classification:

D24133

US Patent:

20110040358, Feb 17, 2011

Filed:

Mar 3, 2009

Appl. No.:

12/920947

Inventors:

David M. Bean - Middleton MA, US
Donald C. Freeman - Burlington MA, US

Assignee:

SEMINEX CORPORATION - Peabody MA

International Classification:

A61N 5/06

US Classification:

607 89

Abstract:

Semiconductor lasers, in which the laser diode output is used directly for medical treatment, can be compact, lightweight and efficient. Lasers operating in the relatively “eye-safe” window of about 1350-1600 nm can be used to treat wounds and diseases of the skin and other organs, for example to cut, ablate or coagulate bodily tissues and fluids. Because the wavelength is eye-safe, the treatment can be through-space, and does not require the use of a fiber optic containment system. The device need not directly contact tissue. Such devices can be battery operated, are portable and self-contained, and thus are suitable for uses that are not confined to medical facilities, including use in emergency situations and in military operations.

US Patent:

20110122905, May 26, 2011

Filed:

Nov 23, 2009

Appl. No.:

12/623886

Inventors:

David M. Bean - Middleton MA, US
John J. Callahan - Wilmington MA, US

Assignee:

SEMINEX CORPORATION - Middleton MA

International Classification:

H01S 3/04
H01S 3/00
B23P 11/00

US Classification:

372 36, 372 3803, 29428

Abstract:

A system for self-aligning assembly and packaging of semiconductor lasers allows reduction of time, cost and testing expenses for high power density systems. A laser package mounting system, such as a modified TO-can (transistor outline can), has modifications that increase heat transfer from the active laser to a heat exchanger or other heat sink. A prefabricated heat exchanger assembly mounts both a laser package and one or more lenses. Direct mounting of a fan assembly to the package further minimizes assembly steps. Components may be physically and optically aligned during assembly by clocking and other indexing means, so that the entire system is self-aligned and focused by the assembly process without requiring post-assembly adjustment. This system can lower costs and thereby enable the use of high powered semiconductor lasers in low cost, high volume production, such as consumer items.

US Patent:

20140074191, Mar 13, 2014

Filed:

Sep 10, 2013

Appl. No.:

14/022436

Inventors:

David Bean - Middleton MA, US
Drake Stimson - Terrace Park OH, US

Assignee:

Dermal Photonics Corporation - Middleton MA

International Classification:

A61N 5/06
G06Q 20/22

US Classification:

607 88, 705 39

Abstract:

Provided are dermatological medical devices and methods comprising a distal end for positioning at a region proximal a target therapeutic region of tissue, an output port at the distal end, an energy source that generates optical energy, which is output from the output port to the target therapeutic region of tissue, and a microcontroller that processes replenishment data that controls an operation parameter of the device. The device is activated for performing a treatment operation in response to a receipt and processing of the replenishment data.

US Patent:

20150058204, Feb 26, 2015

Filed:

Sep 2, 2014

Appl. No.:

14/474369

Inventors:

- Middleton MA, US
David Bean - Middleton MA, US
Drake Stimson - Terrace Park OH, US

International Classification:

A61N 1/28
G06Q 20/14

US Classification:

705 39

Abstract:

Provided are dermatological medical devices and methods comprising a distal end for positioning at a region proximal a target therapeutic region of tissue, an output port at the distal end, an energy source that generates optical energy, which is output from the output port to the target therapeutic region of tissue, and a microcontroller that processes replenishment data that controls an operation parameter of the device. The device is activated for performing a treatment operation in response to a receipt and processing of the replenishment data.