Rangefinder for obtaining information from a...

Television – Camera – system and detail – Optics

Reexamination Certificate

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Details

C348S347000, C348S364000, C348S367000, C348S369000, C348S370000, C396S096000

Reexamination Certificate

active

06876392

ABSTRACT:
A rangefinder according to the present invention includes light source section, camera section, distance-measuring sensor, exposure controller and shutter. The light source section projects light onto an object for 3D imaging purposes. The camera section receives the light that was emitted from the light source section and then reflected from the object. The distance-measuring sensor estimates an approximate distance to the object. Based on the approximate distance, the exposure controller controls the optical output power of the light source section and/or the open/closed states of the shutter. The rangefinder can control the intensity of the projected light even if the object is on the move. As a result, the rangefinder can obtain highly precise information about the 3D location of the object.

REFERENCES:
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patent: 4593987 (1986-06-01), Takahashi et al.
patent: 4657382 (1987-04-01), Busujima et al.
patent: 5081530 (1992-01-01), Medina
patent: 5313261 (1994-05-01), Leatham et al.
patent: 5315363 (1994-05-01), Nettleton et al.
patent: 5512997 (1996-04-01), Ogawa
patent: 2 264 602 (1993-09-01), None
patent: 10-048336 (1998-02-01), None
patent: WO 9701111 (1997-01-01), None
Andrew Gruss et al., “A VLSI Smart Sensor for Fast Range Imaging”, proceedings of the 1992 IEEE/RSJ International Conference on Intelligent Robots and Systems, Jul. 7, 1992.
Kazuyuki Hattori et al., “Handy Rangefinder for Active Robot Vision”, proceedings of the 1995 IEEE International Conference on Robotics and Automation, 1995.
Eupean Search Report, Dated Aug. 14, 2001.
European Search Report, Dated Apr. 24, 2002 Application No. 99125557.1.

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