Photocathode plate and electron tube

Details Photocathode plate and electron tube Photocathode plate and electron tube

2007-02-13

2007-02-13

Patel, Ashok (Department: 2879)

Electric lamp and discharge devices

Photosensitive

Photocathode

C313S544000

Reexamination Certificate

active

10969319

ABSTRACT:
Provided are a photocathode plate capable of stably achieving a high sensitive property, and an electron tube using such a photocathode plate.In a photomultiplier tube1, an insulating layer63is formed between a semiconductor electron emission layer51in a photocathode plate23A, and a first electrode65electrically connected to an electron releasing portion59. This insulating layer63permits the photocathode plate23A to be cleaned by heat cleaning at a high temperature, in a stage before formation of an active layer61on an exposed region of the semiconductor electron emission layer51in the electron releasing portion59. This makes it feasible to effectively clean the exposed region of the semiconductor electron emission layer51in the electron releasing portion59and to stabilize the physical properties of the exposed region. In consequence, a higher sensitive property can be stably achieved in the photocathode plate23A and in the photomultiplier tube1using the photocathode plate23A.

REFERENCES:
patent: 5047821 (1991-09-01), Costello et al.
patent: 5912500 (1999-06-01), Costello et al.
patent: 6376985 (2002-04-01), Lee et al.
patent: 6563264 (2003-05-01), Niigaki et al.
patent: 2001/0001226 (2001-05-01), Nihashi
patent: 2003/0048075 (2003-03-01), Lim et al.
patent: 08-255580 (1996-10-01), None
patent: 2000021295 (2000-01-01), None

Affiliated with

Also associated with

Rating

Photocathode plate and electron tube does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Photocathode plate and electron tube, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Photocathode plate and electron tube will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-3821469