Optical lens
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Nov 28, 2017
Grant Date -
Jun 1, 2017
app pub date -
Jun 1, 2016
filing date -
Nov 27, 2015
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
An optical lens including a first lens group located between a magnified side and a minified side and a second lens group between the first lens group and the minified side is provided. The first lens group has a negative power and includes a first lens. The first lens is a plastic aspheric and meniscus lens. Besides, the first lens has a negative power and a convex surface facing the magnified side. The second lens group has a positive power and includes a second lens, a third lens having a negative power, and a fourth lens. Every two of the second, third, and fourth lenses have an air interval between these lenses. The Abbe number of each of at least three of the lenses is greater than 20. A material of at least one of the lenses is glass. At least one of the lenses is a spherical lens.
First Claim
Other Claims data not available
Family
International Classification(s)
- 2016 Application Filing Year
- G02B Class
- 10130 Applications Filed
- 7990 Patents Issued To-Date
- 78.88 % Issued To-Date
Cited Art Landscape
Patent Citation Ranking
- 0 Citation Count
- G02B 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 | May 28, 2025 |
| 11.5 Year Payment | $7400.00 | $3700.00 | $1850.00 | May 28, 2029 |
