Mitsubishi Electric Corporation

Masatoshi Kodama

Masaki Ono

Keisuke Nakamura

Hiroyuki Kawano

Tomokazu Ogomi

Akiko Fujiuchi

Toru Aramaki

Kosaku Yamagata

Tadashi Minobe

Tatsuya Kunieda

Naoyuki Tokida

Mikio Uesugi

Takahiro Ishihara

An image reading apparatus () includes image sensors (A,B). The image sensor (A) includes light guides (A,A) guiding light to a reading target (M), a lens body (A) forming an image of reflected light derived from the light guided by the light guides (A,A) and reflected from the reading target (M), light receiving elements (A) converting the image of reflected light formed by the lens body (A) into electrical signals, and a controller (A) controlling exposure times of the light receiving elements (A). The image sensor (B) includes a lens body (B) forming an image of transmitted light derived from the light guided by the light guide (A) and transmitted through the reading target (M), light receiving elements (B) converting the image of transmitted light formed by the lens body (B) into electrical signals, and a controller (B) controlling exposure times of the light receiving elements (B).

Image reading device controlling exposure time by multiple opening and closing operations of electronic shutters

A light receiving unit includes photoelectric conversion elements () in which first pixels () are arrayed linearly along a long side of a parallelogram-shaped semiconductor substrate () and second pixels () are arrayed linearly at a location separated away from the first pixels () by a predetermined interpolation pixel distance. An output data processor that generates image data based on outputs of the photoelectric conversion elements () performs time correction of the image data by coupling image data based on outputs of the second pixels () with image data based on outputs of the first pixels () that have a time shift equal to a scanning time corresponding to the interpolation pixel distance.

Light receiving unit

A solid-state imaging device includes blue photoelectric conversion elements, green photoelectric conversion elements, red photoelectric conversion elements, infrared photoelectric conversion elements, and an infrared cut filter (IRCF) is layered on the blue photoelectric conversion elements, the green photoelectric conversion elements, and the red photoelectric conversion elements with a uniform film thickness. Color filters that respectively transmit the blue light, the green light, and the red light are layered on the IRCF so as to correspond with the blue photoelectric conversion elements, the green photoelectric conversion elements, and the red photoelectric conversion elements. A visible-light shielding filter is layered on the infrared photoelectric conversion elements. An ultraviolet cut filter layered between the photoelectric conversion elements other than the infrared photoelectric conversion elements and the IRCF, and between the infrared photoelectric conversion elements and the visible-light shielding filter with a uniform film thickness.

Solid-state imaging device and image sensor for suppressing or preventing leaking of light into adjoining pixels

An image capturing device () includes: a microlens array () including a plurality of micro condenser lenses () arranged at a focal position of an imaging optical system for forming a plurality of erect equal-magnification images; and an imaging unit () including light-sensitive pixels () provided at positions corresponding to the micro condenser lenses. Micro condenser lenses () have refractive powers to condense, among light rays incident from the imaging optical system, light rays incident at an incident angle within a predetermined limited angle range, onto positions different from positions on which light rays incident at an incident angle outside the limited angle range are incident. Effective light-sensitive regions of the light-sensitive pixels () receive only light rays incident at an incident angle within the limited angle range among light rays entered micro condenser lenses ().

Image capturing device

Growing community of inventors

Tokyo, Japan

Masatoshi Kodama