Compact objective optical system and examination apparatus

Details Compact objective optical system and examination apparatus Compact objective optical system and examination apparatus

2007-02-13

2007-02-13

Lester, Evelyn A. (Department: 2873)

Optical: systems and elements

Lens

Microscope objective

C359S764000, C600S101000, C600S160000, C600S162000, C600S167000, C600S176000

Reexamination Certificate

active

11353030

ABSTRACT:
By reducing the outer diameter, increasing the overall length, and correcting chromatic aberration well, the invention realizes an objective optical system and examination apparatus that are suitable for in-vivo examination with a sufficiently increased length and widened observation range. The invention provides a compact objective optical system and an examination apparatus comprising, in order from an object side: a first lens group having positive power; a second lens group including a compound lens; a third lens group formed of a biconvex lens; a fourth lens group having positive power and including a compound lens; and a fifth lens group having positive power. Joining surfaces of the compound lens included in the second lens group and the compound lens included in the fourth lens group have negative power.

REFERENCES:
patent: 6674582 (2004-01-01), Kawasaki
patent: 2004/0051957 (2004-03-01), Liang
patent: 2004-313772 (2004-11-01), None

Affiliated with

Also associated with

Rating

Compact objective optical system and examination apparatus does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Compact objective optical system and examination apparatus, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Compact objective optical system and examination apparatus will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-3884131