Microscope optical system and digital microscope having the...

Details Microscope optical system and digital microscope having the... Microscope optical system and digital microscope having the...

2008-08-29

2009-10-06

Sugarman, Scott J (Department: 2873)

Optical: systems and elements

Lens

With variable magnification

C359S686000

Reexamination Certificate

active

07599122

ABSTRACT:
A microscope optical system includes, in order from an object side to an image side, a first lens group, a second lens group, a stop, a third lens group, a fourth lens group and a sensor. The first to fourth lens groups all have at least one lens element and at least one of lens elements of the first to fourth lens groups has an aspheric surface. The microscope optical system satisfies several specific conditions so as to provide microscope images of high resolution and high zoom ratio. A digital microscope having the microscope optical system adopts a CCD sensor so that a observer may observe microscope images displayed on a large display screen and store the images for subsequent edition or inspection.

REFERENCES:
patent: 7218455 (2007-05-01), Iwasawa
patent: 7342727 (2008-03-01), Iwasawa

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