Telegraphy – Systems – Simplex-reversing periodic
Patent
1974-06-14
1976-10-26
Martin, John C.
Telegraphy
Systems
Simplex-reversing periodic
178 71, 178DIG28, 355 67, H04N 308, H04N 110, G03B 2754
Patent
active
039885372
ABSTRACT:
A scanning system is disclosed for translucent or X-ray film which circumvents the need for a wide angle, large entrance pupil lens as used in the conventional oscillating mirror scanning system. The scanning system is divided into two distinct and separate systems including a scanning optical system having an oscillating mirror which includes in its assembly a single element meniscus lens serving as an objective or first lens in the system. Coupled to the oscillating mirror assembly is a slotted aperture plate located at the image focal point which establishes the "X" dimension of the scanned element area upon the film. The aperture plate is moved in parallel along the scanning optical axis to follow the focal point as the distance from the objective lens to the scanned element area varies during the sweep of a scanned line. An illuminating optical system for establishing the "Y" dimension of the scanned element area upon the film includes a light source and first and second cylindrical lenses having an illuminating aperture plate disposed therebetween. Through the illuminating optical system diffraction and stray light are substantially eliminated, while little or no spectral radiation passes from the scanned image to the detector cell in the scanning optical system.
REFERENCES:
patent: 2226508 (1940-12-01), Clothier
patent: 2976362 (1961-03-01), Stamps
patent: 3519331 (1970-07-01), Cutrona et al.
Carpenter M. Michael
Martin John C.
LandOfFree
Illuminating and transmitting system does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Illuminating and transmitting system, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Illuminating and transmitting system will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-186077