Invention Grant
- Patent Title: Stereomicroscope including an objective with positive and negative meniscus lenses and with optical axes intersecting beyond the object
- Patent Title (中): 立体显微镜包括具有正和负弯液面透镜以及与轴相交的光轴的物镜
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Application No.: US698185Application Date: 1991-05-06
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Publication No.: US5074650APublication Date: 1991-12-24
- Inventor: Masaaki Yamagishi , Fukuo Komaba
- Applicant: Masaaki Yamagishi , Fukuo Komaba
- Applicant Address: JPX Tokyo
- Assignee: Olympus Optical Co., Ltd.
- Current Assignee: Olympus Optical Co., Ltd.
- Current Assignee Address: JPX Tokyo
- Priority: JPX63-295190 19881122
- Main IPC: G02B21/02
- IPC: G02B21/02 ; G02B21/22
Abstract:
A stereomicroscope includes an objective lens used in common and a pair of observing optical systems on the left and right sides, arranged behind the objective lens so that optical axes of the observing optical systems are symmetrically arranged at a predetermined angle with respect to an optical axis of the objective lens. In the stereomicroscope, the objective lens may be arranged so that a focal length of the objective lens has a positive value and an object is located closer to the objective lens than an object focal point of the object lens, and thereby an image which is high in resolution and favorable in flatness is brought about.
Public/Granted literature
- US6016308A Method and system for increasing network information carried in a data packet via packet tagging Public/Granted day:2000-01-18
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