Photosensor

Claim 2

In a thin-film photosensor comprising an electrode of a transparent conductive film and an opaque metallic thin film of high conductivity both of which are deposited on one surface of a thin layer of photoconductor between the photoconductor and the source of incident light, and a counter electrode deposited on the other surface thereof, the improvement comprising said transparent conductive film other than a window for incidence of a light signal being covered with the opaque thin metallic film to limit the light applied to the photoconductor to attain high resolution and to allow low resistance coupling to lead wires.

Claim 3

In a thin-film photosensor comprising an electrode of a transparent conductive film and an opaque metallic film of high conductivity both of which are deposited on one surface of a thin layer of photoconductor between the photoconductor and the source of incident light, and a counter electrode deposited on the other surface thereof, wherein the improvement comprises that said transparent conductive film is provided on a transparent substrate, that the opaque metallic film is provided on said transparent conductive film except its position corresponding to a window for incidence of a light signal to limit the light applied to the photoconductor to attain high resolution, and to allow low resistance coupling to lead wires, that said thin layer of photoconductor is provided over said electrode and said window for incidence of a light signal in said transparent conductive film, and that said counter electrode is deposited on at least a part of said thin layer of photoconductor.

Claim 4

In a thin-film photosensor comprising an electrode of a transparent conductive film and an opaque metallic film of high conductivity both of which are deposited on one surface of a thin layer of photoconductor between the photoconductor and the source of incident light, and a counter electrode deposited on the other surface thereof, wherein the improvement comprises that said transparent conductive film is provided on a transparent substrate, that the opaque metallic film is provided on said transparent conductive film except its position corresponding to a window for incidence of a light signal to limit the light applied to the photoconductor to attain high resolution, and to allow low resistance coupling to lead wires, that said thin layer of photoconductor is provided over said electrode and said window for incidence of a light signal in said transparent conductive film, and that said counter electrode is deposited on at least a part of said thin layer of photoconductor.

Claim 5

A photosensor according to claim 1, wherein said metallic thin film is a thin film of a metal selected from the group consisting of chromium, titanium, silver, aluminum, gold, beryllium, bismuth, cadmium, cobalt, copper, iron, indium, manganese, molybdenum, niobium, nickel, lead, palladium, platinum, rhodium, tin, tantalum, vanadium, tungsten, zinc and zirconium.

Claim 6

A photosensor according to claim 1, wherein said metallic thin film is a chromium thin film.

Claim 7

A photosensor according to claim 1, wherein said metallic thin film is a titanium thin film.

Claim 8

A photosensor according to claim 1, wherein said counter electrode is a metallic thin film.

Claim 9

A photosensor according to claim 6, wherein said metallic thin film is an aluminum thin film.

Claim 10

A photosensor according to claim 1, wherein said thin layer of photoconductor is a film of at least one selected from the group consisting of a CdSe film, and Se-As-Te amorphous film, a CdS film, a Te film, an Se film, an As 2 Se film, a CdTe film, an Sb 2 S 3 film, a PbO film, a PbS film, an Si amorphous film, a Ge amorphous film, a GaAs film, a ZnTe film, and a film of any mixture thereof.

Claim 11

A photosensor array comprising: a transparent substrate: a plurality of stripe-shaped electrodes provided on said transparent substrate, each comprising a transparent conductive film and an opaque metallic thin film provided in contact with said transparent conductive film except at a position corresponding to a window for incidence of a light signal; a thin layer of photoconductor contiguous with and overlapping at least the opaque metallic thin film of said electrodes and said windows; and a counter electrode provided on the side of said photoconductor opposite to said transparent electrodes.

Claim 12

A photosensor array comprising: a transparent substrate: a plurality of stripe-shaped electrodes provided on said transparent substrate, each comprising a transparent conductive film and an opaque metallic thin film provided in contact with said transparent conductive film except at a position corresponding to a window for incidence of a light signal; a thin layer of photoconductor contiguous with and overlapping at least the opaque metallic thin film of said electrodes and said windows; and a counter electrode provided on the side of said photoconductor opposite to said transparent electrodes.

Claim 13

A photosensor array comprising: a transparent substrate; a stripe-shaped electrode provided on said transparent substrate comprising a transparent conductive film and an opaque metallic thin film provided in contact with said transparent conductive film except at a position corresponding to a window for incidence of a light signal; a thin layer of photoconductor contiguous with and overlapping at least the opaque metallic thin film of said electrode and said window; and a plurality of stripe-shaped counter electrodes provided on the side of said photoconductor opposite to said transparent electrodes.

Claim 14

A photosensor array comprising: a transparent substrate; a stripe-shaped electrode provided on said transparent substrate comprising a transparent conductive film and an opaque metallic thin film provided in contact with said transparent conductive film except at a position corresponding to a window for incidence of a light signal; a thin layer of photoconductor contiguous with and overlapping at least the opaque metallic thin film of said electrode and said window; and a plurality of stripe-shaped counter electrodes provided on the side of said photoconductor opposite to said transparent electrodes.

Claim 15

A photosensor array comprising: a transparent substrate; a plurality of stripe-shaped electrodes provided on said transparent substrate, each comprising a transparent conductive film and an opaque metallic thin film provided in contact with said transparent conductive film except at a position corresponding to a window for incidence of a light signal; a thin layer of photoconductor contiguous with and overlapping both at least portions of each of the conductive films and opaque metallic thin films of said electrodes and said windows; and a counter electrode provided on the side of said photoconductor opposite to said transparent electrodes.

Claim 16

A photosensor array comprising: a transparent substrate; a plurality of stripe-shaped electrodes provided on said transparent substrate, each comprising a transparent conductive film and an opaque metallic thin film provided in contact with said transparent conductive film except at a position corresponding to a window for incidence of a light signal; a thin layer of photoconductor contiguous with and overlapping both at least portions of each of the conductive films and opaque metallic thin films of said electrodes and said windows; and a counter electrode provided on the side of said photoconductor opposite to said transparent electrodes.

Claim 17

A photosensor according to claim 2, wherein said thin layer of photoconductor is further provided on a part of said opaque thin film.

Claim 18

A photosensor according to claim 6, wherein said metallic thin film is a gold thin film.

Claim 19

A photosensor array comprising: a transparent substrate; a stripe-shaped electrode provided on said transparent substrate comprising a transparent conductive film and an opaque metallic thin film provided in contact with said transparent conductive film except at a position corresponding to a window for incidence of a light signal; a thin layer of photoconductor contiguous with and overlapping both at least a portion of each of the conductive film and opaque metallic film of said electrode and said window; and a plurality of stripe-shaped counter electrodes provided on the side of said photoconductor opposite to said transparent electrodes.

Claim 20

A photosensor array comprising: a transparent substrate; a stripe-shaped electrode provided on said transparent substrate comprising a transparent conductive film and an opaque metallic thin film provided in contact with said transparent conductive film except at a position corresponding to a window for incidence of a light signal; a thin layer of photoconductor contiguous with and overlapping both at least a portion of each of the conductive film and opaque metallic film of said electrode and said window; and a plurality of stripe-shaped counter electrodes provided on the side of said photoconductor opposite to said transparent electrodes.