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Automated optical inspection (AOI) is an automated visual inspection of printed circuit board (PCB) (or LCD, transistor) manufacture where a camera autonomously scans the device under test for both catastrophic failure (e.g. missing component) and quality defects (e.g. fillet size or shape or component skew). It is commonly used in the ...
Rodenstock continued to manufacture other optical devices, such as projection lenses for slide projectors (Splendar). In 1968, the company introduced the first photochromatic glasses in Europe , and from 1975 onwards, it produced the first plastic ophthalmic lenses in the world.
It spans a wide range of manufacturing procedures and optical test configurations. The manufacture of a conventional spherical lens typically begins with the generation of the optic's rough shape by grinding a glass blank. [1] This can be done, for example, with ring tools. Next, the lens surface is polished to its final form.
This is for companies who exclusively or predominantly create optical lenses for still and film photography. Subcategories This category has the following 10 subcategories, out of 10 total.
Optical glass refers to a quality of glass suitable for the manufacture of optical systems such as optical lenses, prisms or mirrors.Unlike window glass or crystal, whose formula is adapted to the desired aesthetic effect, optical glass contains additives designed to modify certain optical or mechanical properties of the glass: refractive index, dispersion, transmittance, thermal expansion and ...
In December 1947, TOPCON started selling lens meters and an Ophthalmic and Medical Instruments business. In May of 1949, they listed their stock on Tokyo and Osaka Stock Exchanges. [citation needed] 1957—released its first single-lens reflex camera, the Topcon R, [7] with semi-auto lens and an interchangeable finder.
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