Projection lens and projection display device using the same

United States of America Patent

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Feb 1, 2011
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Mar 4, 2010
app pub date
Jul 24, 2009
filing date
Aug 27, 2008

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Abstract

Disclosed are a projection lens that is faster than F1.95 and has a simple inner focus structure, a high optical performance, and a small size, and a projection display device.indicates a distance between the first lens group and the second lens group and f indicates the focal length of the entire lens system.

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Patent Owner(s)

FUJINON CORPORATION

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G02B:OPTICAL ELEMENTS, SYSTEMS, OR APPARATUS

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[Patents Count]

Inventor(s)

Inventor Name	Address	# of filed Patents	Total Citations
Amano, Masaru	Saitama, JP	82	295

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Projection lens and projection display device using the same

Number of patents in Portfolio can not be more than 2000

United States of America Patent

12508868

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PATENT NO	7880973
APP PUB NO	20100053764A1
SERIAL NO	12508868
DOCKET NO

US Family Size	Non-US Coverage
Patent Longevity	Forward Citations

DATE PUBLISHED	PUBLICATION/PATENT NO.	PUBLICATION TYPE
February 01, 2011	US,7880973,B2 US7880973B2	GRANTED PATENT AS SECOND PUBLICATION
March 04, 2010	US,20100053764,A1 US20100053764A1	FIRST PUBLISHED PATENT APPLICATION

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12508868

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