Eastman-kodak Company

Carestream Health, Inc.

Yawcheng Lo

Robert P Bourdelais

Constantine N Anagnostopoulos

Cheryl J Kaminsky

Wen-Li A Chen

Michael D Heath

Stephen L Kosman

James Doran

Teresa M Levy

A radiation imaging system includes a radiation head with a radiation source and an adjustable angular orientation. A radiation image detection device has a photostimulable medium that records an image according to radiation emitted from the radiation source. A measurement sensor apparatus, preferably inertial, is coupled sequentially to the photostimulable medium to provide three-dimensional data for determining the angular orientation of the photostimulable medium and to the radiation source for determining its angular orientation. There is at least one indicator responsive to the orientation data from the measurement sensor apparatus for indicating an orientation adjustment of the radiation source is needed in at least one direction.

Orientation sensing apparatus for radiation imaging system

The invention relates to a validation device comprising at least one specular reflective layer, indicia on said reflective layer, a polymer protective layer overlaying said indicia, and a polymer protective layer on the side of the reflective layer opposite to said indicia wherein said indicia are formed by thermal dye transfer.

Security device with specular reflective layer

By incorporating an ITO electrode which is more transparent than polysilicon, and designing the pixel such that it has asymmetric gates with as much as possible of its light sensitive region covered by an ITO electrode, light sensitivity is increased. To solve the problem of impurity diffusion from the ITO electrode into the silicon below, the conventional Silicon Dioxide gate dielectric was replaced with an Oxide/Nitride/Oxide stack. Employing at least some polysilicon electrodes with ITO electrodes is desirable to allow entrance passages through which hydrogen passivation can be accomplished. The pixel architecture can be designed to increase sensitivity further by other design choices. The first of these choices is to incorporate a lenslet on each pixel such that as much as possible of the light falling on the pixel is made to pass through the portion of the pixel covered with ITO. The pixel light sensitivity improves not only because the light passes through the more transparent ITO electrode, but also because some of the light that would have fallen on the LOD region and would be lost, is now collected. The second method is for color CCD sensors with color filter patterns, such as the 'BAYER' color filter pattern to name just one, to have the overlap of the color filters, which does not allow light transmission, to occur over the less sensitive area of the pixel, which is the area covered with the polysilicon electrode. For proper operation a slight modification of the vertical clock timing is needed.

Image sensor having ITO electrodes with an ONO layer

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Rochester, NY, United States of America

Yawcheng Lo