Optical: systems and elements – Diffraction – From grating
Reexamination Certificate
2007-11-20
2007-11-20
Amari, Alessandro (Department: 2872)
Optical: systems and elements
Diffraction
From grating
C359S900000
Reexamination Certificate
active
11785039
ABSTRACT:
A hybrid achromatic optical lens having a high numerical aperture whose chromatic aberration is removed and a method for manufacturing the same are provided. The hybrid achromatic optical lens includes a first optical member of a low index of refraction and a second optical member of a high index of refraction. The second optical member is formed on a depressed portion of the first optical member and has a diffractive surface, which is a contact surface of the second optical member with the first optical member and has a plurality of pitches formed on a refractive surface. The method for manufacturing the hybrid achromatic optical lens includes forming a profile of a diffractive surface having a plurality of pitches on a molding die whose one surface is the same as a profile of a refractive surface, forming a depression having the diffractive surface on a first optical member having a low index of refraction using the molding die, and coating a material having a high index of refraction on the depression, grinding a surface of material, and forming a second optical member having a high index of refraction.
REFERENCES:
patent: 5129718 (1992-07-01), Futhey et al.
patent: 5349471 (1994-09-01), Morris et al.
patent: 5436764 (1995-07-01), Umetani et al.
patent: 5715091 (1998-02-01), Meyers
patent: 5847877 (1998-12-01), Imamura et al.
patent: 5978159 (1999-11-01), Kamo
patent: 6366405 (2002-04-01), Abe
patent: 6851803 (2005-02-01), Wooley et al.
patent: 2006/0144093 (2006-07-01), Hosoe
patent: 9-127321 (1997-05-01), None
patent: 11-271514 (1999-10-01), None
patent: 2001-042212 (2001-01-01), None
patent: 2001-249271 (2001-09-01), None
patent: 2001-296414 (2001-10-01), None
patent: 86/06846 (1986-11-01), None
patent: 02/069014 (2002-09-01), None
Official Action issued by the Japanese Patent Office in corresponding Patent Application No. 2003-433745, Mar. 20, 2007.
Cho Eun-hyoung
Lee Myung-bok
Sohn Jin-seung
Amari Alessandro
Buchanan & Ingersoll & Rooney PC
LandOfFree
Hybrid achromatic optical lens and method for manufacturing... does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Hybrid achromatic optical lens and method for manufacturing..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Hybrid achromatic optical lens and method for manufacturing... will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-3842019