Optical: systems and elements – Compound lens system – Right angle inspector
Patent
1990-04-24
1992-09-22
Arnold, Bruce Y.
Optical: systems and elements
Compound lens system
Right angle inspector
359740, 358 98, 128 6, G02B 2300, H04N 718, A61B 106
Patent
active
051502542
ABSTRACT:
An endoscope with a shape recognition mechanism capable of facilitating measurements with improved accuracy. In a front-viewing type, the endoscope includes a beam projection unit, to be inserted into the forceps channel, for projecting a patterned light beam to be utilized in a shape recognition on an object to be imaged by the imaging device, by which the patterned light beam is projected at a predetermined angle with respect to the object to be imaged. In a side-viewing type, the endoscope includes a beam projector part, fixed in a vicinity of the forceps outlet, for projecting a patterned light beam to be utilized in a shape recognition on an object to be imaged by the imaging device, by which the patterned light beam is projected at a predetermined angle with respect to the object to be imaged, and a beam guide part, to be inserted into the forceps channel up to a position directly underneath the beam projector parts, for guiding the source light beam to the beam projector part.
REFERENCES:
patent: 3901220 (1975-08-01), Koyasu et al.
patent: 4398811 (1983-08-01), Nishioka et al.
patent: 4834070 (1989-05-01), Saitou
patent: 4895433 (1990-01-01), Takahashi et al.
patent: 4896986 (1990-01-01), Tekayama
Arnold Bruce Y.
Kabushiki Kaisha Toshiba
Nguyen Thong
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