The plastic lens for which the above-mentioned copolymer is used is widely used for convex and concave lenses for spectacles and other optical apparatus. The high refractive index of >=1.62nD is particularly obtd. and therefore the thickness at the edge part of the lens is decreased and when...
Note that the refractive index of optical plastic materials is very close to the refractive index of glass. Table 5.4. Principal Optical Properties of Polymeric Materials PropertiesPMMAPSNASSANPCADC Refractive Index nd (589 nm) 1.491 1.590 1.533 - 1.567 1.567 - 1.571 1.586 1.504 nc (656.3 nm)...
What is the index of refraction of ice? What is the index of refraction of plastic? What is refractive amblyopia? What is refractive error? What is ocular refraction? What is refraction of light? What is refractive lens exchange? What is angle of refraction?
The aim is to present the current state-of-the-art in the field, besides analyzing the various aspects of developing optical plastics. The review presents various possible approaches to achieve the desired properties e.g. high refractive index of the optical plastic materials. 展开 ...
An image-reading device comprises a lens unit array comprising an array of distributed refractive index plastic cylindrical lens elements and plastic plate... YCCL Mishina - EP 被引量: 9发表: 1993年 Microlithographic illumination method and a projection lens for carrying out the method A microlit...
During the last 100 years, developments of two types of unique materials such as rubber and plastics have helped mankind to extend its activities [1-6]. Major growth period of the plastic industry has mainly been from 1930. By 1900, the only plastic materials available were shellac, gutta-...
A graded-refractive-index optical plastic material composed of an amorphous fluoropolymer and at least one material which differs from the polymer in refractive index by at least 0.001, wherein the material is so distributed as to have a concentration gradient in a specific direction, and a method...
which can be shown to be equal to the ratio of the phase speed in the first medium to that in the second. In the case of electromagnetic radiation, esp light, it is usual to give values of theabsolute refractive indexof a medium, that is for radiation entering the medium from free spa...
*Elman J.F., Greener J., Herzinger C.M., and Johs B. "Characterization of Biaxially-Stretched Plastic Films by Generalized Ellipsometry" Thin Solid Films 1998, 313/314, 814-818. For a typical sample of PET therefractive indexandextinction coefficientat632.8 nmare 1.6357 and 0. Below are ...
A graded-refractive-index optical plastic material comprising an amorphous fluorine-containing polymer (A) having substantially no C--H bond, and at least one fluorine-containing polycyclic compound (B) having a refractive index higher by at least 0.005 than the fluorine- containing polymer (A), ...