Large-field-of-view lens system for capsule endoscope and capsule endoscope having large-field-of-view lens system

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专利权人:

发明人:

Ting-Yu Cheng

申请号：

US13671350

公开号：

US08749897B2

申请日:

2012.11.07

申请国别(地区):

US

年份:

2014

代理人:

摘要：

A lens system and a for a capsule endoscope includes a first lens having a concave aspheric surface having a radius R2 and a second lens having a convex aspheric surface having a radius R3 facing the first lens. A third lens has a convex aspheric surface having radius R6. The lens system satisfies the following conditions: (1) R2/Gap>1 and ABS(R3/R2)>1.28 (2) 1

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