Optical glass and optical element

Number of patents in Portfolio can not be more than 2000

United States of America Patent

PATENT NO 9988296
APP PUB NO 20180065880A1
SERIAL NO

15468474

Stats

ATTORNEY / AGENT: (SPONSORED)

Importance

Loading Importance Indicators... loading....

Abstract

See full text

The present invention provides a high refractivity and high dispersion optical glass and optical element with small relative partial dispersion (Pg,F), high transmittance and good chemical stability. For optical glass, with anion as O2−, wherein a cation thereof contains the following components by weight percentage: 12-25% of Si4+; 58-75% of Nb5++W6++Zr4+; 8-25% of Li++Na++K+; 10% of Ba2+ or less. Based on the reasonable component design, the refractive index of the optical glass is 1.81-1.89, the Abbe number is 20-29, Pg,F is 0.5956-0.6199, and the corresponding wave length λ70 is below 450 nm when the transmittance reaches up to 70%. Therefore, the optical glass provided by the present invention is applicable to high-quality optical elements.

Loading the Abstract Image... loading....

First Claim

See full text

Family

Loading Family data... loading....

Patent Owner(s)

Patent OwnerAddress
CDGM GLASS CO LTD610100 CHENGDU LONGQUANYI DISTRICT SICHUAN PROVINCE NO 359 SECTION 3 OF CHENGLONG AVENUE CHENGDU CITY SICHUAN PROVINCE 610100

International Classification(s)

  • [Classification Symbol]
  • [Patents Count]

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Yuan, Wei Chengdu, CN 197 1762

Cited Art Landscape

Load Citation

Patent Citation Ranking

Forward Cite Landscape

Load Citation

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 5, 2025
11.5 Year Payment $7400.00 $3700.00 $1850.00 Dec 5, 2029
Fee Large entity fee small entity fee micro entity fee
Surcharge - 7.5 year - Late payment within 6 months $160.00 $80.00 $40.00
Surcharge - 11.5 year - Late payment within 6 months $160.00 $80.00 $40.00
Surcharge after expiration - Late payment is unavoidable $700.00 $350.00 $175.00
Surcharge after expiration - Late payment is unintentional $1,640.00 $820.00 $410.00