Facsimile and static presentation processing – Facsimile – Specific signal processing circuitry
Patent
1989-07-19
1991-09-03
Kostak, Victor R.
Facsimile and static presentation processing
Facsimile
Specific signal processing circuitry
358 98, 358107, 358 95, H04N 718
Patent
active
050459368
ABSTRACT:
A laser beam is projected through the optical system of an endoscope and scanned in raster fashion by means of a scanning head at a proximal end of the endoscope tube. The beam is projected from a distal end of the endoscope tube so as to be scanned over an object. Light reflected from the object is detected and used to form a television image. The range of the object is measurable in a ranging mode of the apparatus in which the depth of focus of the projected laser beam is reduced using a zoom lens at the distal end of the endoscope and the focus distance of the projected beam varied until an in-focus position is detected by analysis of the reflected position is detected by analysis of the reflected light. Detection of the in-focus position relies on characteristics of laser speckle, a selected portion of the object being scanned in ranging mode to detect maximum modulation in the speckle pattern which occurs when the focus distance corresponds to the range of the object. Range and object size information may then be included in a television image of the object.
REFERENCES:
patent: 4141362 (1979-02-01), Wurster
patent: 4143400 (1979-03-01), Heckman, Jr. et al.
patent: 4195311 (1980-03-01), Moran
patent: 4211229 (1980-07-01), Wurster
patent: 4625236 (1986-11-01), Fujimori et al.
patent: 4634857 (1987-01-01), Fey
patent: 4660924 (1987-04-01), Denis et al.
patent: 4847687 (1989-07-01), McDonnell et al.
Applications of Scanning Optical Microscopy, by Sheppard from "SPIE", vol. 368 Microscopy--Techniques and Capabilities (Sira) 1982.
Three-Dimensional Microscopy Using Confocal Laser Scanning Microscope, by Carlsson et al., from "Optics Letters", vol. 10, No. 2, Feb. '85.
Microscopic Tomography by Laser Scanning Microscopy and its Three-Dimensional Reconstruction, by Takamatsu and Fujita, from "Journal of Microscopy", vol. 149, Pt. 3, Mar. 1988.
Laser Scanning Microscope: Differential Phase Images, by Horikawa, Yamamoto and Dosaka, "Journal of Microscopy", vol. 148, Pt. 1, Oct. 1987.
Development of Real-Time Scanning Laser Microscope for Biological Use, by Suzuki and Horikawa, "Applied Optics", vol. 25, No. 22, Mar. 1986.
Lobb Daniel R.
West Robert N.
Keymed (Medical and Industrial Equipment Limited)
Kostak Victor R.
LandOfFree
Laser scanning imaging apparatus and method of ranging does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Laser scanning imaging apparatus and method of ranging, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Laser scanning imaging apparatus and method of ranging will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1013206