Electric lamp and discharge devices – Photosensitive – Secondary emitter type
Patent
1993-11-29
1996-10-15
O'Shea, Sandra L.
Electric lamp and discharge devices
Photosensitive
Secondary emitter type
313105CM, H01J 4304
Patent
active
055657290
ABSTRACT:
A process for fabricating microchannel plates produces large area microchannel plates that have channel exit openings as small as 0.5 micron, MTF.about.1, pitch-limited resolution (a factor of 10 potential improvement in resolution) and at a cost of $0.40/sq. centimeter, and with funneling controlled as to configuration and exit opening size and shape. Microchannels may be rectangular in cross section, or rectangular, or trapezoidal, or other configuration, including straight sided, chevron or balloon sided. Microchannels of differing configurations may be interspersed, for reasons of alignment or to control pixel characteristics. Material choice may include glass, ceramic, metal, alloy and plastics, plus dopants. This materials flexibility, and the improved geometrical uniformity lead to higher signal-to-noise ratio and lower outgassing, and to a significant improvement in performance. Microchannels are formed in `green` glass/ceramic ribbons using high-precision, low-cost and versatile planar process steps, eliminating the need for the fiber-drawing and chemical-etching. The ribbon of green glass/ceramic powder in a binder and solvent slurry is configured in complementary partial microchannel forming grooves and partially dried to a safe handling condition, then carefully stacked upon a takeup device with precise alignment. The stack is cut into segments for final solidification by heat fusing and curing and sliced, then smoothed and equipped with appropriate ion barrier and electrode layers for use as microchannel plates.
REFERENCES:
patent: 3564323 (1971-02-01), Maeda
patent: 3612946 (1971-10-01), Toyoda
patent: 3979621 (1976-09-01), Yates
patent: 4071474 (1978-01-01), Kishimoto
patent: 4385092 (1983-05-01), Singer, Jr.
patent: 4764139 (1988-08-01), Murata et al.
patent: 4912314 (1990-03-01), Sink
Faris Sadeg M.
Jain Kanti
O'Shea Sandra L.
Patel Ashok
Perkowski, Esq. Thomas J.
Reveo Inc.
LandOfFree
Microchannel plate technology does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Microchannel plate technology, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Microchannel plate technology will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1248722