Is a
Patent attributes
Current Assignee
0
Patent Jurisdiction
Patent Number
Date of Patent
October 6, 2015
0Patent Application Number
136180840
Date Filed
September 14, 2012
0Patent Citations Received
Patent Primary Examiner
Patent abstract
Provided is an infrared optical system including: three lenses of a first lens, a second lens, and a third lens that are provided from an object side to an image-surface side, the first and third lenses being each configured as a spherical lens made of an inorganic material and having a positive refractive power, the second lens being configured as a meniscus lens made of a resin material and having aspherical surfaces; and an aperture stop that is provided between any two of the first to third lenses.
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