Ranger finder device and camera

Details Ranger finder device and camera Ranger finder device and camera

2005-05-24

2005-05-24

Gregory, Bernarr E. (Department: 3662)

Optics: measuring and testing

Range or remote distance finding

Triangulation ranging to a point with two or more projected...

C356S003120, C356S015000, C356S602000, C356S603000

Reexamination Certificate

active

06897946

ABSTRACT:
A range finder device, for measuring, when a plurality of projected lights having radiation patterns whose light intensity differs three-dimensional space-wise are irradiated onto an object from a light source on a time-sharing basis to image-pick up reflected light of the projected light from the object with a camera, a distance using the light intensity of an image picked up, characterized in that, with respect to each of a plurality of surfaces including the center of the light source and the center of a lens, there is obtained, in advance, relation between an angle of each projected light from the light source and light intensity ratio in each surface, characterized in that, at the time of actual distance measurement, light intensity of each pixel of the camera is measured, and on the basis of the light intensity thus measured, and relation between the angle and the light intensity ratio on a predetermined surface corresponding to a coordinate position of the pixel measured, there is obtained the angle corresponding to the light intensity of the predetermined pixel thus measured, and characterized in that, on the basis of these light intensity measured, the angles obtained and further two-dimensional coordinate position information on the predetermined pixel on the image, a distance to the object is calculated.

REFERENCES:
patent: 2172098 (1939-09-01), Eppenstein
patent: 4325640 (1982-04-01), Dreyfus et al.
patent: 4538062 (1985-08-01), Shishido
patent: 4594001 (1986-06-01), DiMatteo et al.
patent: 4802759 (1989-02-01), Matsumoto et al.
patent: 4908648 (1990-03-01), Sawabe et al.
patent: 5082362 (1992-01-01), Schneiter
patent: 5085502 (1992-02-01), Womack et al.
patent: 5485002 (1996-01-01), Kusaka
patent: 5838428 (1998-11-01), Pipitone et al.
patent: 5912739 (1999-06-01), Fowler et al.
patent: 5930383 (1999-07-01), Netzer
patent: 6040910 (2000-03-01), Wu et al.
patent: 1102087 (2001-05-01), None
patent: 58-121008 (1983-07-01), None
patent: 59-218411 (1984-12-01), None
patent: 61-84515 (1986-04-01), None
patent: 2-1514 (1990-01-01), None
patent: 3-164709 (1991-07-01), None
patent: 4-136737 (1992-12-01), None
patent: 5-45124 (1993-02-01), None
patent: 05-502720 (1993-05-01), None
patent: 08-286100 (1996-11-01), None
patent: 10-48336 (1998-02-01), None
patent: 10-68871 (1998-03-01), None
patent: 11-194018 (1999-07-01), None
patent: WO 9108439 (1991-06-01), None
Japanese Official Action dated Jun. 3, 2003.
Japanese search report for PCT/JP99/02715 dated Aug. 3, 1999.
English translation of Form PCT/ISA/210.
Official Action from JPO, with dispatch date Apr. 2, 2002.
Carrihill and Hummel, “Experiments with the Intensity Ratio Depth Sensor”, no. 32, pp. 337-358.

Affiliated with

Also associated with

Rating

Ranger finder device and camera does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Ranger finder device and camera, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Ranger finder device and camera will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-3384405