Charles E Freeman

US Patent:

40243907, May 17, 1977

Filed:

Apr 9, 1976

Appl. No.:

5/675366

Inventors:

David A. Bosserman - Alexandria VA
Charles F. Freeman - Springfield VA

Assignee:

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

International Classification:

H01J 3912

US Classification:

250213VT

Abstract:

A picture element array image intensifier tube display device and system providing image analysis and processing schemes for an image in either direct or remote view. The picture element array comprises two in-line microchannel plate (MCP) electron multipliers having an array of electrically isolated parallel output electrode stripes on a first MCP that are adjacent and orthogonal to a second MCP input electrode array of electrically isolated parallel metallic stripes. The input and output electrode array stripes have differential bias voltages selectively switched thereacross in some selective scan mode wherein said bias voltages are varied according to image analysis and processing schemes in a feedback circuit.

US Patent:

49874942, Jan 22, 1991

Filed:

Dec 7, 1989

Appl. No.:

7/447481

Inventors:

Charles F. Freeman - Springfield VA

Assignee:

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

International Classification:

H04N 314
H04N 5335
H01L 2978

US Classification:

35821311

Abstract:

The invention provides a composite CCD storage chip, i. e. a chip with two D's or equivalent charge packet storage devices mounted on opposite sides of the same chip, wherein the charge packets are transferred in parallel through the small dimension of the chip using central boundary layers.

US Patent:

40243915, May 17, 1977

Filed:

Apr 9, 1976

Appl. No.:

5/675367

Inventors:

David A. Bosserman - Alexandria VA
Charles F. Freeman - Springfield VA

Assignee:

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

International Classification:

H01J 3912

US Classification:

250213VT

Abstract:

A picture element array image intensifier tube display device and system providing image analysis and processing schemes for an image in either direct or remote view. The picture element array comprises an array of electrically isolated parallel photocathode stripes that are adjacent and orthogonal to a microchannel plate input electrode array of electrically isolated parallel metallic stripes which have differential bias voltages selectively switched thereacross in some selective scan mode wherein said bias voltages are varied according to image analysis and processing schemes in a feedback circuit.

US Patent:

46066063, Aug 19, 1986

Filed:

May 1, 1984

Appl. No.:

6/605965

Inventors:

Charles F. Freeman - Springfield VA

Assignee:

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

International Classification:

G02B 2702

US Classification:

350145

Abstract:

A distortion identification method which produces an undistorted rectilin cross grid pattern for comparison with any distortion and curvature of field in a display system. An undistorted rectilinear grid, representing an infocus view of the display where an observer's eye would normally be in a display system, is positioned to be optically projected by a collimating lens and the optical element back to the display focal surface. A curved cross grid pattern of the rectilinear grid is laid on a glass substrate, which is form fitted to the display focal surface, by projection photolithography. The curved cross grid pattern indicates the shape of the focal surface required to present a high resolution display emanating therefrom which is in-focus to an observer viewing the display.

US Patent:

40203760, Apr 26, 1977

Filed:

Mar 5, 1976

Appl. No.:

5/664219

Inventors:

David A. Bosserman - Alexandria VA
Charles F. Freeman - Springfield VA

Assignee:

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

International Classification:

H01J 4300
H01J 3126
H01J 4304

US Classification:

313103CM

Abstract:

A miniature flat panel image intensifier tube display device using two inne microchannel plate (MCP) electron multipliers that have two arrays of orthogonally positioned electrically isolated parallel metallic stripes as electrodes on their interfacing surfaces and have the conventional continuous electrodes on the other two surfaces. A solid photocathode layer is in proximity focus with the solid input electrode of the first MCP, and the solid output electrode of the second MCP is in proximity focus with a display device. Array switching electronic means selectively switches bias voltages in some selected scan mode over the two arrays of MCP metallic stripes to provide a selective electron charge pattern exiting the second MCP wherein the charge pattern is converted to a visible image at the display device.

US Patent:

40266419, May 31, 1977

Filed:

Dec 30, 1975

Appl. No.:

5/645501

Inventors:

David A. Bosserman - Alexandria VA
Charles F. Freeman - Springfield VA

Assignee:

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

International Classification:

G02B 510

US Classification:

350298

Abstract:

A toric reflector display comprising a toric concave reflector with a toric onvex object surface, an auxiliary display device, and an optical transfer device which transfers information from the auxiliary display to the toric object surface. The toric reflector display provides an observer with a distant virtual image of the information. The virtual image of the information may be viewed superimposed on the real world if the toric concave reflector is semi-opaque.

US Patent:

40315525, Jun 21, 1977

Filed:

Mar 5, 1976

Appl. No.:

5/664325

Inventors:

David A. Bosserman - Alexandria VA
Charles F. Freeman - Springfield VA

Assignee:

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

International Classification:

H04N 570
H04N 566

US Classification:

358241

Abstract:

A miniature flat panel image intensifier display tube having an array of ctrically isolated parallel photocathode array stripes adjacent and orthogonal to a microchannel plate input electrode array comprising electrically isolated parallel metallic stripes. A video picture signal generator modulates a radiation source that causes a generally uniform flow of photons to impinge on the photocathode array. The photoelectrons that are emitted from the photocathode array are selectively accelerated into a charge pattern according to differential voltages scanned across both arrays by array switching electronic means wherein the charge pattern is converted to a visible image for viewing by an observer.

US Patent:

42950732, Oct 13, 1981

Filed:

Mar 28, 1978

Appl. No.:

5/890899

Inventors:

Charles F. Freeman - Springfield VA
Kurt Villhauer - Annandale VA

Assignee:

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

International Classification:

H01J 4322
H01J 4328

US Classification:

313105CM

Abstract:

The invention relates to a microchannel plate-in-wall structure wherein a m portion of a microchannel plate extends through and is permanently sealed to a hollow generally cylindrical glass walled structure which is easily processed into an image intensifier tube, the external terminals of the plate being part of the electrodes deposited thereon.