Electrostatic lens structure
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Jun 27, 2017
Issued Date -
N/A
app pub date -
Jun 12, 2014
filing date -
Oct 1, 2008
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
An electrostatic lens comprising a first conductive plate with a first aperture, a second conductive plate with a second aperture, the second aperture being substantially aligned with the first aperture, a voltage supply for supplying a first voltage to the first conductive plate and a second voltage to the second conductive plate, the first voltage being lower than the second voltage, and an insulating structure for separating the first conductive plate from the second conductive plate. The insulating structure comprises a first portion in contact with the first conductive plate and a second portion in contact with the second conductive plate, the first portion having an overhanging portion and the second portion having an indented portion at an edge of the insulating structure, so that a gap is formed between the overhanging portion and the second conductive plate.
First Claim
Other Claims data not available
Family
International Classification(s)
- 2014 Application Filing Year
- H01J Class
- 2291 Applications Filed
- 1924 Patents Issued To-Date
- 83.99 % Issued To-Date
Cited Art Landscape
Patent Citation Ranking
- 0 Citation Count
- H01J Class
- 0 % this patent is cited more than
- 8 Age
Maintenance Fees
| Fee | Large entity fee | small entity fee | micro entity fee | due date |
|---|---|---|---|---|
| 7.5 Year Payment | $3600.00 | $1800.00 | $900.00 | Dec 27, 2024 |
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