Panasonic Intellectual Property Management Co., Ltd.

Panasonic Holdings Corporation

Panasonic Corporation

Takahiro Sono

Ryo Taniguchi

Sukoya Tawaratsumida

Takayuki Nishikawa

Tomohiro Kamitsu

Teruki Hatatani

Suguru Fukui

Lens for infrared radiation sensor

Infrared radiation sensor

Lens for infrared sensor

A meniscus lens has a dome shape and has a first surface facing a lens array and a second surface facing an infrared sensing element. The meniscus lens has a central portion and a peripheral portion. The central portion includes a top point that is an intersection between the optical axis of the meniscus lens and the first surface. The peripheral portion includes an end of the first surface of the meniscus lens. With respect to the central portion of the meniscus lens, an aplanatic point of the first surface is located at the focus of the lens array. With respect to the peripheral portion of the meniscus lens, an aplanatic point of the second surface is located at the focus of the lens array.

Infrared sensing device

The pyroelectric infrared detection element has a pyroelectric element including opposite first and second electrodes and an infrared absorption part. The first and second electrodes are formed on first and second thickness-direction surfaces of a pyroelectric substrate respectively. The detection element includes an output terminal unit including first and second output terminals on the substrate, and first and second wiring parts connecting the first and second output terminals to the first and second electrodes respectively. The first wiring part includes a connecting line being a conductive layer on the first surface to connect the first output terminal to the first electrode, and a canceling line for canceling charges generated at the connecting line in response to a change in temperature of the substrate. The canceling line is a conductive layer on the second surface to be insulated from the second electrode and to be connected to the connecting line.

Pyroelectric infrared detection element and infrared sensor using the same

Growing community of inventors

Shiga, Japan

Takahiro Sono