Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
79 words
A thermal photodetector comprising: a thermal photodetector element; a support stand for supporting the thermal photodetector element; a mount for supporting the support stand in a thermally connecting state, the mount having a temperature controlled to a predetermined value; and the support stand being made of photosensitive glass and has a size determined such that the quantity of heat conduction in a heat conduction passage from the thermal photodetector element to the mount is equal to a predetermined quantity.
Claim 2
Dependent Claim
79 words
A thermal photodetector comprising: a thermal photodetector element; a support stand for supporting the thermal photodetector element; a mount for supporting the support stand in a thermally connecting state, the mount having a temperature controlled to a predetermined value; and the support stand being made of photosensitive glass and has a size determined such that the quantity of heat conduction in a heat conduction passage from the thermal photodetector element to the mount is equal to a predetermined quantity.
Claim 3
Dependent Claim
16 words
A thermal photodetector according to claim 1, wherein the thermal photodetector element is a pyroelectric element.
Claim 4
Dependent Claim
23 words
A thermal photodetector according to claim 2, wherein the pyroelectric element is an element using a pyroelectric crystal of a TGS (triglycine-sulphate) system.
Claim 5
Dependent Claim
15 words
A thermal photodetector according to claim 1, wherein the thermal photodetector element is a thermopile.
Claim 6
Dependent Claim
15 words
A thermal photodetector according to claim 1, wherein the thermal photodetector element is a thermistor.
Claim 7
Dependent Claim
21 words
A thermal photodetector according to claim 1, wherein the mount is a heat sink thermally connected to heating and cooling means.
Claim 8
Dependent Claim
22 words
A thermal photodetector according to claim 1, wherein the mount is a hybrid IC board on which a Peltier element is mounted.
Claim 9
Independent Claim
154 words
A method of manufacturing a thermal photodetector comprising the steps of: exposing, to light, a photosensitive glass plate having a thickness corresponding to the height of a support stand of a thermal photodetector to be manufactured, said light exposure being made with the use of a mask having a light shield portion of which shape is corresponding to the shape in transverse section of said support stand; sticking, with adhesives, said photosensitive glass plate to a pyroelectric crystal plate provided on one surface thereof with an electrode for taking out a signal, said surface of said pyroelectric crystal plate on which said electrode is mounted facing said photosensitive glass plate; polishing the surface of said pyroelectric crystal plate opposite to the sticked surface thereof, thereby to reduce the thickness of said pyroelectric crystal plate; and removing, by etching, the light-sensed portion of said photosensitive glass plate which has been formed by said light exposure.
Claim 10
Independent Claim
154 words
A method of manufacturing a thermal photodetector comprising the steps of: exposing, to light, a photosensitive glass plate having a thickness corresponding to the height of a support stand of a thermal photodetector to be manufactured, said light exposure being made with the use of a mask having a light shield portion of which shape is corresponding to the shape in transverse section of said support stand; sticking, with adhesives, said photosensitive glass plate to a pyroelectric crystal plate provided on one surface thereof with an electrode for taking out a signal, said surface of said pyroelectric crystal plate on which said electrode is mounted facing said photosensitive glass plate; polishing the surface of said pyroelectric crystal plate opposite to the sticked surface thereof, thereby to reduce the thickness of said pyroelectric crystal plate; and removing, by etching, the light-sensed portion of said photosensitive glass plate which has been formed by said light exposure.