Hamamatsu-photonics K.k.

Kenzo Hayatsu

Terumasa Nagano

Koei Yamamoto

Shigeru Suzuki

Mitsutoshi Sugiya

Yuki Okuwa

Ryuta Yamada

Keisuke Nagura

An ultraviolet sensor includes a silicon photodiode array having a plurality of first pixel regions and a plurality of second pixel regions. A filter film is disposed on each of the first pixel regions so as to cover each first pixel region, except on each second pixel region. The filter film lowers transmittance in a detection target wavelength range in the ultraviolet region. Each of each first pixel region and each second pixel region includes at least one pixel having an avalanche photodiode to operate in Geiger mode, and a quenching resistor connected in series to the avalanche photodiode. Each of the quenching resistors in the plurality of first pixel regions is connected through a first signal line to a first output terminal. Each of the quenching resistors in the plurality of second pixel regions is connected through a second signal line to a second output terminal.

Ultraviolet sensor and ultraviolet detecting device

An object is to prevent occurrence of an insensitive zone to radiation in parallel arrangement of multiple units. This radiation detecting unitis provided with a PD arrayincluding a plurality of PD elementsarrayed opposite to a scintillatorand output electrode padsarrayed corresponding to the PD elements, integrated circuitsfor processing signals from the PD elements, a flexible substratefor mounting of the PD arrayand integrated circuits, and a radiation shield plateprovided opposite to the PD arraywith the flexible substratein between and formed so that ends thereofare located inside the PD array; the output electrode padshave an array pitch made shorter than that of PD elements; the flexible substrateis folded along the endsat intermediate regions Abetween mounting regions of the PD arrayand integrated circuits, whereby the integrated circuitsare arranged on the opposite side to the PD elementswith the radiation shield platein between.

Radiation detecting unit

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Hamamatsu, Japan

Kenzo Hayatsu