containing the Abbe numbers and focal lengths of the two lens components. Figure 1:Abbe diagram with a couple of optical glasses from Schott. Glasses with a relatively low Abbe number of less than 50 (i.e., with relatively strong dispersion) are calledflint glasses, whereas glasses with a ...
Abbe_number
1)Abbe number阿贝数 1.The results indicated a set of high refractive index glasses could be obtained by introduction of BaO and TiO_2,and the density,refractive index,Abbe number and transmission of the glass with various BaO/TiO_2 ratio based on the content of SiO_2 in 15%,12%,10%(...
Highly chromatic corrected optical systems rely on a precise Abbe number of optical glasses. The just introduced narrowest tolerance for the Abbe number requires improved knowledge about its uncertainty. For a set of optical glasses the uncertainty is analyzed on the basis of a high number of ...
The glass has a refractive index (nd) of more than 1.81, an Abbe number (Vd) of above 46 but less than 48; the upper limit of internal transmittance (λƮ80) of the glass is below 350 nm; and the liquidus temperature is below 1150°C. 该玻璃具有折射率(nd)为1.81以上,阿贝数(Vd...
published in NATURE of November 21, we would state that of the many different types of Zeiss Abbe refractometer, including a late pre-war instrument, that have passed through our hands for repair, all have been fitted with an illuminating prism of low refractive index glass (Nabout 1.515). ...
The optical properties are defined by two primary parameters, the refractive index and Abbe number. The refractive index is a measure of the bending power of a light beam when passing from one medium into another. The Abbe or v-number named after German
Knowing that Abbe was a mathematicien and the master at making inventory of glass Abbe number (his invention), it is not difficult to see why other lens designer had so much difficulty to have the mathematical vision about how to do a lens that keep so little dispersion between G' a...
The sparsity parameter can be expressed as β = S/N, where S is the number of nonzero values and N is the total number of basis functions41,42. However, it is important to note that the information does not have to be sparse in real space: any mathematical basis that is ...
An optical glass has optical constants represented by a refractive index (nd) of 1.46 to 1.58 and an Abbe's number (νd) of 65 to 74, has excellent hot preform shapeability, low softenability and excellent climate resistance, and comprises, by mol %, 45