The high index of refraction which has the chemical resistance it is low density glassPURPOSE: To obtain a high refractive index and low density glass having chemical resistance by containing substantially no AlO and specifying a composition.ジャン エミル ブドー...
[translate] aShoot 射击[translate] acladding layer has an index of refraction different from that of said core. 正在翻译,请等待...[translate]
The endoscope which relates to this invention aforementioned rod lens has positive distribution, features that thing and the optical glass lens where index of refraction consists of the uneven material in radial are the flat convex lens. 展开 ...
This test method is capable of readability to four figures to the right of the decimal point. 1. Scope 1.1 This test method covers a procedure for measuring the index of refraction of transparent organic plastic materials. 1.2 A refractometer method is presented. This ...
1. A holographic recording medium characterized in that a plurality of hologram sensitive material layers, each of the sensitive material layers has indices of refraction varying from other layers in the thickness direction, wherein the plurality of hologram sensitive material layers are laminated togeth...
This current density significantly surpasses the current density of most documented MEGs by more than a factor of ten. Molecular engineering, on top of that, significantly improves the mechanical characteristics of hydrogels, resulting in a 506% stretchability, ranking among the highest in reported ...
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This invention is directed to the production of glasses essentially free of Nb2O5, and having refractive index close to 1.7, an Abbe number of about 35 and a density close to 3.2. The glasses consist essentially in weight percent on the oxide basis, of -SiO2 38-45 -TiO2 15-<20 -ZrO2...
A glass having a refractive index \\- 1.880, an Abbe number of <= 30.4 and a density \\} 4.1; contains, by oxide wt., 6-9% silicon, 15-19% boron, 12-20.5% niobium, 8-10% zirconium, 7-11% titanium, 23-32% lanthanum, 0-5% yttrium, 0-5% tungsten, 8-13% calcium, 0-2% ...
The ophthalmic lens is distinguished by having at least one system of surfaces at given level (n(x,y,z)=const.) with a constant refractive index, which are spaced the same distance at all points in the direction of their surface normals (parallel surfaces), and which, respectively their ...