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Open Access Graphically Selecting Optical Material for Color Correction and Passive Athermalization

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This paper presents pair optical glass by using a graphical method for selecting achromatize and athermalize an imaging lens. An athermal glass map that plots thermal glass constant versus inverse Abbe number is derived through analysis of optical glasses in visible light. By introducing the equivalent Abbe number and equivalent thermal glass constant, although it is a multi-lens system, we have a simple way to visually identify possible optical materials. ZEMAX will be used to determine the change in focus through the expected temperature changes in Earth orbit. The thermal defocuses over -20°C to +60°C are reduced to be much less than the depth of focus of the system
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Document Type: Research Article

Affiliations: (Physics Department, Al-Mustansiryah University, and CollegeOf Education)

Publication date: January 1, 2016

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