Lumetrics, Inc.

Ase Optics Inc.

Todd Blalock

Filipp V Ignatovich

Christopher T Cotton

David Maxwell Kleinman

A portable hand-held camera for imaging the fundus of an eye, the camera comprising a housing comprising an internal cavity terminating at a forward housing end, a forward lens, and a light source configured to direct light from locations distributed around the perimeter of the forward lens forwardly out of the housing end. In other embodiment, a portable hand-held camera for imaging the fundus of an eye includes optics configured to focus light reflected back from the fundus onto an image receptor, with the optics being capable of varying the field of view among differing portions of the fundus. Methods to ensure unique image identification and storage are described.

Portable fundus camera

An apparatus for measuring a layered object comprising a low coherence light source, a coherent light source, and an interferometer including a reference arm and a measurement arm. The reference arm is comprised of a first section of polarization maintaining optical fiber engaged with a first fiber stretcher. The measurement arm is comprised of a second section of polarization maintaining optical fiber engaged with a second fiber stretcher. The first and second fiber stretchers are driven so as to alternatingly vary the lengths of the first section of polarization maintaining optical fiber and the second section of polarization maintaining optical fiber, thereby causing interference signals with the low coherence light when the length of the reference arm is equal to the length of the measurement arm including the distance from the second section of polarization maintaining optical fiber to any of the surfaces of the layers of the object.

Fiber-based interferometric device for measuring axial dimensions of a human eye

An apparatus for measuring the axial length of a human eye, the apparatus comprising a low coherence light source; a beam splitter; a fast displacement module for rapidly varying the path length within a reference arm of an interferometer; a laser directing a laser beam that is co-propagating with light from the low coherence light source into the displacement module.

Apparatus for measurement of the axial length of an eye

A multiplexing spectrometer measures at least one parameter, such as temperature, pressure or stress. The system multiplexes the outputs of Bragg stack sensors deposited at the distant ends of optical fibers brought in contact or in close proximity to objects. The spectrometer detects the peaks of the optical signals returned from the Bragg stacks and converts them into corresponding values of the parameters of interest. The spectrometer includes an optical system that comprises an entrance slit, a diffraction grating as a light dispersing means. Multiplexing occurs on a two-dimensional solid state matrix photo detector detects and converts the light signals returned from the Bragg stack sensing elements into corresponding electrical signals, and a built-in look-up table to provides the values of the parameters of interest that correspond the spectral characteristics of the returned light signals.

Multiplexing spectrometer

A system and method for measuring the thickness of materials and coatings across a moving length of material such as sheet, film, or web by the use of non-contact optical interferometry is provided. Also, a system and method for evaluating the seal integrity in flexible packaging across a moving web by the use of non-contact optical interferometry is provided. Measurement of optical density and thickness, and the combination of various measurements in the production and process of manufacturing materials such as flexible packaging items that involve moving webs of material is disclosed. The present invention concerns the system and method involved in the collection and interpretation of data for these measurements and inspections.

Growing community of inventors

Penfield, NY, United States of America

Todd Blalock