Patents awarded to Professor Daniel Ferenc, CEO and founder of PhotonLab, Inc.


Large-Area Detector Apparatus for Photosensor, Radiation Detector, and Medical PET Scanner Applications

Abstract- A large area position – sensitive single – photon detector and radiation detector is described. Photon detectors are coupled to a large area panel configured with an equipotential feedthrough chamber that operates in combination with a photocathode of a hemispherical window to provide electrostatic focusing for the photoelectrons. The panels can be assembled into an enveloping structure, such as a PET scanner, which is globally and / or locally curved, such as into a sphere, ovoid, elongated cylinder, or similar structure providing significant sensitive surface surrounding an object, such as a patient being scanned in a medical positron emission tomography (PET) scanner. Increased sensitivity is provided in response to registering radiation by surrounding the patient, so that reduced patient radiation dosing levels are required.

Vacuum Photosensor Device With Electron Lensing

Abstract- A scalable vacuum photosensor configured to simplify mass production with a housing having an evacuated first side at an ultrahigh vacuum and a second side which does not require high vacuum. The first side of the device is sealed to a base plate, having a central electron readout element, using an oxide-free sealing technique, with the deposited Sealing areas serving as high Voltage throughputs from the first to second sides. A conductive photocathode layer on the transparent first side converts photons to photoelectrons and concentrates focusing photoelectrons upon the readout, preferably having a scintillator which generates secondary light measured by an optical detector in the second side of the housing.

Highly Sensitive Imaging Camera For Space Applications Including Detection of Ultra-High Energy Cosmic Rays

Abstract- An imaging camera includes a housing that defines a proximal end and a distal end. A Fresnel lens is installed in the proximal end of the housing. Moreover, a reflection mode photocathode is installed in the distal end of the housing opposite the Fresnel Lens. An electron sensor is disposed in the center of the Fresnel lens. A conductive layer is disposed on the interior of the housing. Further, the Fresnel lens establishes plural concentric optically passive surfaces that are parallel to the central axis defined by the imaging camera. A conductive layer is disposed on each optically passive surface, and an electron lens is established by the conductive layer on the interior of the housing and the conductive layers on the Fresnel lens.

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