Patent
Objective lens system for microscopes
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TLDR
An objective lens system for microscopes composed of only two lens components each of which is a radial type graded refractive index lens component, and having a numerical aperture of at least 0.2 and favorably corrected aberrations is presented in this paper.Abstract:
An objective lens system for microscopes composed of only two lens components each of which is a radial type graded refractive index lens component, and having a numerical aperture of at least 0.2 and favorably corrected aberrations.read more
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Vari-focal lens system
TL;DR: A vari-focal lens system as mentioned in this paper is a system consisting of a first lens unit having a negative refractive power, a second one having a positive one, a third one having an aspherical surface and an aperture stop arranged on the image side of the third one.
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