Omron Corporation

Omron Automotive Electronics Co., Ltd.

Hidenori Miyazaki

Hoshibumi Ichiyanagi

Hideyuki Yasugi

Masato Yoshida

Tadao Nishiguchi

Naoki Fujiwara

Kazuo Yamamoto

Satoru Arita

Wataru Ishio

Hiroshi Kitajima

Yoshiro Tasaka

Satoshi Hirota

Daisuke Itao

Takashi Shirai

Motomu Yokota

Naoki Otani

Keito Ando

A target detecting device projects measuring light over a predetermined range in front of a vehicle, receives reflected light from a target, and detects the target or a distance to the target, based on a light reception signal output according to the light reception state. The light projecting unit includes a light emitting element emitting measuring light and light diffusion members. The light diffusion members are provided on an upper end portion and a lower end portion of a light projecting lens constituting part of a light projecting path, and diffuses, in the vertical direction, measuring light emitted from the light emitting element and traveling through the end portions in the vertical direction of the light traveling path while transmitting the measuring light.

Target detecting device

A projection optical system includes a laser diode; a laser diode module having a plurality of the laser diodes one-line arranged; a light projecting lens to adjust spread of light emitted from the respective laser diodes; and an optical deflector to deflect light passing through the light projecting lens and irradiate a target with the deflected light. The laser diodes emit light such that the light spreads at a first angle in a first direction and spreads at a second angle being wider than the first angle in a second direction being perpendicular to the first direction. The laser diode modules are disposed such that an arrangement direction thereof coincides with the first direction and they are placed along the second direction and shifted in position relative to each other in the first direction. The light projecting lenses are disposed with corresponding to the laser diode modules.

Projection optical system and object detection device

An object detection device includes a first substrate with a laser diode thereon; a second substrate with a photodiode thereon; a holding member holding the first and second substrates; an optical deflector deflecting light projected from the LD to irradiate a target with the deflected light, and deflects light reflected off the target; and a reflecting mirror guiding the reflected light deflected by the optical deflector to the PD. The LD is mounted on a mounting surface of the first substrate to project light mainly in a direction parallel to the mounting surface. The PD is mounted on a mounting surface of the second substrate to receive light coming mainly in a direction perpendicular to the mounting surface. The holding member parallelly holds the first and second substrates such that projection planes of the first and second substrates perpendicular to the mounting surfaces overlap each other.

Object detection device

A laser radar device has a light projection part that projects light to a monitoring area outside a vehicle from a vehicle interior through a glass surface, a light receiving part that is placed a given distance away from the light projection part in a substantially horizontal direction to receive reflected light from an object outside the vehicle in the light projected by the light projection part through the glass surface, a measuring part that measures the distance to the object in the monitoring area based on timing when the light projection part projects the light and timing when the light receiving part receives the reflected light, and a light-projection shielding part that shields the light projected to an outside of the monitoring area in the light projected by the light projection part.

Laser radar device placed on glass surface of vehicle

An object detecting device has components which emit electromagnetic waves by scanning a scan range in horizontal and vertical directions, receive reflected waves, obtain signal level of the received reflected waves, calculate a correction value based on vertical position of the zone in the scan range where the level of the received waves is the highest and the center position of the scan range in the vertical direction, and correct the center position in the vertical direction of the scan range based on the calculated correction value.

Object detecting device and method with means for controlling direction of scan by electromagnetic waves

A safety distance measuring device employing an electromagnetic wave is provided. A laser diode 2 is energized to emit laser beams by a laser diode drive circuit 3 in accordance with a clock signal generated by a control circuit 29. The emitted laser beams are sequentially changed to predetermined scanning directions by a scanner 1 associated with control circuit 29. The scanned laser beams from scanner 1 are reflected by an object 19 to be received by a photodiode 5. An output of the photodiode is applied to control circuit 29 through a light receiving circuit 6 where an elapsed time from emission to receipt is computed to obtain a distance from scanner 1 to object 19. Based on data relating to scanning directions by a scanning position detector 4, a begin-and-end detecting circuit 28 can stop the radiation of electromagnetic waves around a scanning start point and a scanning end point which is danger to human bodies.

Electromagentic wave generating device and a distance measuring device

A speed measuring apparatus includes a light projecting unit having a light source for emitting light, a projection optical system for projecting the light from the light source onto a relatively moving object and a first polarizer included in a part of the projection optical system for allowing the passage of polarized light from the light source as projected light. A light receiving unit includes a second polarizer allowing the passage of polarized light in a direction at right angles to the direction of polarization of the projected light reflected from the relatively moving object and a spatial filter detector for taking out a predetermined spatial frequency of the light passed through the second polarizer and outputting an electrical signal representing the frequency. The relative speed of the relatively moving object is calculated on the basis of the signal from the spatial filter detector.

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Aichi, Japan

Hidenori Miyazaki