Browse Prior Art Database

PIN-TUBE IMAGE AMPLIFIER

IP.com Disclosure Number: IPCOM000023272D
Original Publication Date: 1977-Apr-30
Included in the Prior Art Database: 2004-Mar-29
Document File: 2 page(s) / 275K

Publishing Venue

Xerox Disclosure Journal

Abstract

An imaging device, utilizing the parallel va,riable grating mode in liquid crystalline materials as set forth in U.S. Patent No. 3,980,396, Is proposed for use as an image amp-lifier. The image amplifier comprises a novel, capillary array pin-' tube sandwiched between a photocondu.ctive layer and a layer of liquid crystalline material suitable for the parallel variable grating mode. The transparent electrode is placed in contact with the liquid crystalline layer and an electrode (optionally transparent) is placed in contact with the photoconductive layer.

This text was extracted from a PDF file.
At least one non-text object (such as an image or picture) has been suppressed.
This is the abbreviated version, containing approximately 69% of the total text.

Page 1 of 2

XEROX DISCLOSURE JOURNAL

PIN-TUBE IMAGE AMPLIFIER Proposed Classification Joel M. Pollaók U.S. Cl. 3S0/16OLC
mt. Cl. G02b 5/23

An imaging device, utilizing the parallel va,riable grating
mode in liquid crystalline materials as set forth in U.S.
Patent No. 3,980,396, Is proposed for use as an image amp-
lifier.

The image amplifier comprises a novel, capillary array pin-'
tube sandwiched between a photocondu.ctive layer and a layer of
liquid crystalline material suitable for the parallel variable
grating mode. The transparent electrode is placed in contact
with the liquid crystalline layer and an electrode (optionally
transparent) is placed in contact with the photoconductive
layer.

The novel pin-tube comprises an opaque glass capillary array'
in which the capillaries are electrolytically filled with
metal. The metal field capillaries provide conductive paths
which are microns in diameter and fraetions of a mierQn apart.

When the photoconductor is illuminated from its exposure side,
cutrent flows through the metal field capillaries inducing the
para'lel variAble grating mode in the liquid crystalline layer.
in areas over metal field capillaries into which the photocon-
dugtor injected charge carriers. Since the :parallel variable
grating mode iS a volume grating, readout light directed into
the liquid crystalline layer (from the non-'exposure side of
the photocon4uctive layer) is reflected from polished metal
surfaces and further diftracted in passing again through the
volume gratings....