Ricoh Company, Ltd.

Fujifilm Business Innovation Corp.

Kento Nakamura

Kazuhiro Fujita

Tadashi Nakamura

Yuki Hayashi

Hiromichi Atsuumi

Naoki Miyatake

Hiroyuki Satoh

Daisuke Ichii

Makoto Hirakawa

Takehide Ohno

Yuuki Satoh

Issei Abe

Yosuke Kasuya

Masato Kusanagi

Makoto Inamoto

Keita Katagiri

Jun Kishiwada

Hiroyuki Tanabe

Shimpei Ogino

Nobutaka Hara

A light emitting device includes: a member having a first surface facing in one direction and a second surface facing an opposite side to the first surface; a light emitter that is disposed at the first surface, generates heat due to light emission, and has a lower stiffness than the member; and a heater that is disposed at the second surface of the member, and heats the member from the second surface.

Light emitting device, optical measurement apparatus, and image forming apparatus

A display system includes an optical element through which light diverges and an imaging optical system configured to form an image by projecting diverging light diverging through the optical element. In the display system, the image formed by the imaging optical system is visually recognized by a viewer, and a condition in an equation tan 0&#x2265;(T&#xd7;B)/(S&#xd7;O) is satisfied, where &#x3b8; denotes a divergence angle of the optical element, T denotes distance between the image forming optical system and the formed image, B denotes a range of an eye box that is an area through which the formed image can visually be recognized, S denotes distance between the formed image and a viewpoint of the viewer of the formed image, and O denotes distance between the optical element and the image forming optical system. In the above equation, each distance indicates length of an optical path that passes through a center of an image formed by the light when an object is observed from a reference eyepoint.

Optical element, display system, and mobile object

An imaging device includes an imaging element, and an image capturing optical system configured to generate an image of an object on the imaging element. The image capturing optical system has a gradient decreasing region in which a change of a gradient of an image magnification rate with respect to an angle of view of the image generated on the imaging element decreases as a concerned position deviates farther away from an optical axis of the image capturing optical system, and a gradient increasing region in which the change of the gradient of the image magnification rate with respect to the angle of view of the image generated on the imaging element increases as the concerned position deviates farther away from the optical axis of the image capturing optical system.

Imaging device, image capturing optical system, and movable apparatus

A display systemA includes a light deflectorthat scans the light beams that are emitted from a light-source devicein the main scanning direction and the sub-scanning direction orthogonal to the main scanning direction to form an intermediate imageon a screen, the screenthat disperses the light, a front windshieldthat reflects the diverging light diverging from the screen, and a free-form surface mirrorthat projects the diverging light diverging from the screentowards the screento form a virtual image. The screenis arranged so as to satisfy the condition in the following equation: S*O*(M+O)/(T*E*M)&#x2264;1.95 where S denotes distance between a location of eyepoint of the viewer of the virtual image and the virtual image, E denotes distance between the location of eyepoint of the viewer of the virtual image and an image forming optical system that uses the diverging light to form the virtual image, M denotes distance between the light deflector and the intermediate image, and O denotes distance between the intermediate image and the image forming optical system, and T denotes distance between the virtual image and the image forming optical system, where each distance indicates length of an optical path that passes through a center of an image formed by the light when an object is observed from a reference eyepoint.

Display device, display system, and mobile object

A display apparatus includes a screen configured to form an intermediate image by being irradiated with light, a front windshield configured to display a virtual image by being irradiated with light forming the intermediated image, a reflection member configured to reflect light going out from the screen to the front windshield, and a rotation shaft configured to rotate the reflection member. The rotation shaft is tilted with respect to a pitch axis. The reflection member has notches formed thereon.

Display apparatus and equipment

A display device includes a screen to form an intermediate image with light; a concave mirror, and a first mirror disposed between the screen and the concave mirror. The first mirror includes a first reflective area to reflect the light emitted from the screen to the concave mirror; a second reflective area to reflect the light emitted from the concave mirror to an area where a virtual image is formed; and a common reflective area in which the first reflective area and the second reflective area at least partly overlap on each other.

Display device and including a screen concave mirror and flat mirror

A display device includes an intermediate-image formation unit configured to form an intermediate image on a screen, a projection unit configured to project the intermediate image toward a transmission/reflection member to display a virtual image, a reception unit configured to receive virtual image information about the virtual image, and a correction unit configured to rotate the intermediate image within the screen to correct a defect of the virtual image in accordance with the virtual image information.

Display device and apparatus

An image display device includes a light source to emit light, an image forming element to form an image with the light emitted from the light source, a micro-lens array to be irradiated with the light forming the image, the micro-lens array including a plurality of lens columns arranged in a second direction, each lens column including micro-lenses being arranged in a first direction, the first direction and the second direction being perpendicular with each other, and a projection optical system to project light passing through the micro-lens array toward a transmitting and reflecting member.

Growing community of inventors

Kanagawa, Japan

Kento Nakamura