The terms Far PD and Distance PD are commonly used interchangeably and are identical.What do Far PD/Distance PD & Near PD mean?When we talk about PD (Pupillary Distance), we need to distinguish between:Far PD/Distance PD: it is used for single vision eyeglasses and refers to the ...
The lens height of 4.2 cm ensures that the glasses sit comfortably on the face, offering a snug fit for a variety of face shapes and sizes. **Versatile and High-Quality Lenses** These myopia diopter or near and far multifocal reading glasses are designed for the modern woman who values ...
request the PD. if you are not write in order. we put 65mm for myopia and 62mm for progressive. we can do customized for this model. but you need contact store order from other link.thanks Up means see far or distance. down means see close or near for reading. ...
Most VONIRT materials are inorganic materials, such as silicon, metal oxides, perovskite nanocrystals, photonic crystals and chalcogenide glasses [10–15]. However, these inorganic materi- als are brittle and fabricated at high temperatures or using toxic raw materials, leading to severe high energy...
Precise measurements of the high-frequency shear modulus of two bulk Zr- and Pd-based glasses in the initial and strongly preannealed states in a wide temperature range are performed. Isothermal structural relaxation of preannealed samples leads to either decrease or increase of the shear modulus....
glasses. His disappearance is considered suspicious. Anyone with information regarding Guy Carmels disappearance is encouraged to contact the Maine State Police. Contact: Maine State Police, Major Crimes Unit-North, 198 Maine Ave, Bangor, ME 04401. Telephone (207) 973-3750 or toll free (in ...
In order to obtain IR luminescence of new wavelengths or bandwidths, glasses doped with different rare earth ions (REIs), especially Dy3+, Er3+, and Tm3+, have been intensively investigated in the past decades. For instance, the 1.3 μm emission of Dy3+ ion has been well ...
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2.2. Synthesis of Nanophosphors A synthesis strategy is a critical factor to suppress luminescence quenching regardless of other factors such as the host matrix or dopant ratios. The sol-gel method is a productive, facile, and low-cost method for the preparation of large-scale multi-component ...
A near infrared ray absorbing compound having an improved solubility and light resistance can be obtained by amidating and/or imidating the amino groups on substituents of a phthalocyanine. According to its preparation process, the desired near infrared ray absorbing compound can be easily prepared by...