Image scanning lens and image scanning device that uses same

Details Image scanning lens and image scanning device that uses same Image scanning lens and image scanning device that uses same

2005-05-17

2005-05-17

Dang, Hung Xuan (Department: 2873)

Optical: systems and elements

Lens

Multiple component lenses

C359S771000

Reexamination Certificate

active

06894848

ABSTRACT:
An image scanning lens includes four lens components, each of which may be a lens element. From the object side of the image scanning lens, the first lens component has positive refractive power and a meniscus shape with the convex surface on the object side, the second lens component has a biconcave shape, the third lens component has a biconvex shape, and the fourth lens component has negative refractive power and a concave surface on the object side and may be a meniscus lens or a biconcave lens component. The image scanning lens satisfies certain conditions related to the focal lengths of the first, second, and fourth lens components of the image scanning lens and to the relative partial dispersions of the lens elements. An image scanning device, such as an image scanner, with an image pickup device, such as a CCD, uses the image scanning lens.

REFERENCES:
patent: 5589989 (1996-12-01), Estelle et al.
patent: H11-190820 (1999-07-01), None
patent: 2000-249913 (2000-09-01), None
patent: 2002-31753 (2002-01-01), None

Affiliated with

Also associated with

Rating

Image scanning lens and image scanning device that uses same does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Image scanning lens and image scanning device that uses same, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Image scanning lens and image scanning device that uses same will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-3410178