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Seiko Optical Products Co., Ltd. — Wholesale marketing of lenses and frames for glasses along with other optical-related products; Seiko Instruments Inc. — Development, manufacturing and sales of watches, precision components and machine tools, electronic components, printers, measurement and analysis instruments
Seiko, SII and Epson logos. Three companies share "Seiko" in their official names but have different corporate visual identities.. Seiko Group (セイコー・グループ, Seikō Gurūpu) was a Japanese corporate group consisting of three core companies Seiko Holdings Corp. (Seiko; f/k/a K. Hattori & Co., Hattori Seiko), Seiko Instruments Inc. (SII; f/k/a Daini Seikosha, Seiko Instruments ...
process of changing optical power to maintain focus as distance changes Ad: Advised: Add: Addition AIT: After-image transfer ALT: Alternating ALT ET/SOT: Alternating esotropia: ALT XT/XOT: Alternating exotropia ARC: Anomalous retinal correspondence A/V: Arteriole–venue ratio BIO: Binocular indirect ophthalmoscopy BSV: Binocular single vision ...
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.
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The Astron was unveiled in Tokyo on December 25, 1969, after ten years of research and development at Suwa Seikosha (currently named Seiko Epson), a manufacturing company of Seiko Group. Within one week 100 gold watches had been sold, at a retail price of 450,000 yen ( US$1,250 (equivalent to $10,386 in 2023)) each (at the time, equivalent to ...