Projection optical system and projection-type display apparatus

Number of patents in Portfolio can not be more than 2000

United States of America Patent

PATENT NO 9442358
APP PUB NO 20150077723A1
SERIAL NO

14488838

Stats

ATTORNEY / AGENT: (SPONSORED)

Importance

Loading Importance Indicators... loading....

Abstract

See full text

In a projection optical system that projects an image displayed on an image display device arranged on a reduction-side conjugate plane onto a magnification-side conjugate plane, as a magnified image, the projection optical system includes a refractive optical system and a reflective optical system having negative refractive power in this order from a reduction side. Further, the following conditional formula (1) is satisfied:

description='In-line Formulae' end='lead'−0.0015≦(1/tan(ωmax)−0.16)×(θL/θM−0.27)   (1).description='In-line Formulae' end='tail'

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

First Claim

See full text

Family

Loading Family data... loading....

Patent Owner(s)

  • FUJIFILM CORPORATION

International Classification(s)

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Amano, Masaru Saitama-ken, JP 82 294
Baba, Tomoyuki Saitama-ken, JP 41 556
Kamiya, Takeshi Saitama-ken, JP 123 749
Kawana, Masanao Saitama-ken, JP 30 69

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 Mar 13, 2024
11.5 Year Payment $7400.00 $3700.00 $1850.00 Mar 13, 2028
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