Jonathan A Martin

US Patent:

6490913, Dec 10, 2002

Filed:

May 18, 2000

Appl. No.:

09/573277

Inventors:

Jonathan W. Martin - Montgomery Village MD
Edward Embree - Frederick MD
Mark R. VanLandingham - Gaithersburg MD

Assignee:

The United States of America as represented by the Secretary of Commerce - Washington DC

International Classification:

G01B 1130

US Classification:

73105, 738656

Abstract:

The present invention provides a novel humidity chamber suitable for use with an atomic force microscope (AFM). The humidity chamber of the present invention employs an intricate geometrical design which can accommodate a scanned-stylus AFM with an optical lever. This geometrical design allows the invention to enclose one or more of the AFM scanner, tip assembly, optical lever detection system, sample and an optical microscope objective lens, without degrading the ability to operate the AFM or the related systems. The invention is comprised of two major pieces: a chamber within which the AFM scanning head assembly is placed, and an integrated sample platform and spring-loaded base-plate that allows samples to be loaded and unloaded without removal of the chamber from the AFM scanning head assembly. The sample platform, which extends up from the base-plate and is inserted into the chamber, can include a magnet that is securely attached to the base. Once the sample platform is positioned inside the chamber, a locking pin can be inserted between the chamber and the bottom portion of the sample platform to secure the sample platform and base-plate.

US Patent:

6626052, Sep 30, 2003

Filed:

Aug 2, 1999

Appl. No.:

09/180079

Inventors:

Jonathan Martin - Gaithersburg MD
Joannie Chin - Frederick MD

Assignee:

The United States of America as represented by the Secretary of the Commerce - Washington DC

International Classification:

G01N 1700

US Classification:

738656, 356236, 250228

Abstract:

A method and apparatus for irradiating a specimen with a beam of radiation are provided. The method comprises the steps of providing an integrating sphere, a radiation source radiatively communicating with the sphere, and a specimen, the integrating sphere radiatively communicating with the specimen through an aperture in the sphere. The apparatus comprises a radiation source, an integrating sphere in radiative communication with the radiation source, and a specimen holder in radiative communication with the integrating sphere. The disclosed apparatus and method allow the irradiance of a beam of radiation impinging on the specimen to be maintained at a uniform level across the width of the beam to allow quantitative specimen evaluation.

US Patent:

20180341123, Nov 29, 2018

Filed:

Aug 1, 2018

Appl. No.:

16/052329

Inventors:

- Baltimore MD, US
Jonathan Michael Martin - Baltimore MD, US
Adam Harris Kaufer - Baltimore MD, US

International Classification:

G02C 11/08
G02C 1/04
G02C 5/10

Abstract:

Eyeglass frames include a face member and two temple members connected to the face member. The face member includes a rim with a brow configured to retain at least one lens. A nose member is connected to the face member and supports the rim separated from a face of a wearer by a gap. A vent passage is provided in the brow and extends from a front portion of the brow to a rear portion of the brow. A vent adjustment member provided on the brow directly above the at least one lens. The vent adjustment member is configured to move between a first position wherein the vent passage is substantially closed and a second position wherein the vent passage is open. The vent adjustment member is substantially flush with a medial portion and a lateral portion of the brow when the vent adjustment member is in the first position and offset from the medial portion and lateral portions of the brow when the vent adjustment member is in the second position.

US Patent:

20160231597, Aug 11, 2016

Filed:

Apr 14, 2016

Appl. No.:

15/099194

Inventors:

- Baltimore MD, US
Jonathan Michael Martin - Baltimore MD, US
Adam Harris Kaufer - Baltimore MD, US

International Classification:

G02C 11/02
G02C 5/00
G02C 5/16

Abstract:

Eyeglass frames include a face member with a rim and at least one temple frame member connected to the face member. The temple frame member includes an upper perimeter portion and a lower perimeter portion with a slot formed between the upper and lower perimeter portions. A temple overlay is coupled the temple frame member. The temple overlay includes an upper lip and a lower lip. The upper lip is configured to wrap around the upper perimeter portion of the temple frame member and the lower lip is configured to wrap around the lower perimeter portion of the temple frame member. The temple overlay further includes a panel extending between the upper lip and the lower lip such that the panel is exposed in the slot of the temple frame member when the temple overlay is coupled to the temple frame member. The panel may be comprised of a textile.