Hoya Y5ND2049 Fiche technique télécharger pdf (Page 2)

OUTLINE

THE PRODUCTION PROCESS OF

HOYA FILTERS

Each Hoya filter is the result of research, know-how and complete

precision facilities backed by full quality control.

Before production starts, controls are first programmed into a

computer. Then the finest materials are carefully mixed by an

automatic V-blender for absolute uniformity. After being melted with

highly sophisticated equipment, this material is then precision

molded with automatic direct pressing equipment. The pressed

blanks are next slowly and continuously cooled to remove strain,

and are then polished by high-speed, double-surface polishing

machines that assure precise surface quality and perfect flatness.

Next is the coating process which improves the filter light

transmission ability. And the transmission characteristics are

checked by Spectro-Photometer, after which an ultrasonic cleaner

removes all foreign matter from the surfaces. Only after passing all of

Hoya's quality tests are the filters assembled, finished and made

ready for shipment to customers throughout the world.

HOYA SEES AND RESPONDS TO

THE NEEDS OF TODAY

HOYA

Corporation has diversified its operations by capitalizing on

the potential of optoelectronic technologies since its establishment in

1941 as Japan's first specialty manufacturer of optical glass. Today,

Hoya is active in four fields of business: Information Technology business

makes mask blanks and photomasks for semiconductor devices and

liquid crystal panels, optical lenses, and glass memory disks for hard disk

drives. The Eye Care provides eyeglasses and operates contact lenses

retail shops, as well as makes intraocular lenses for cataract surgery. The

Life Care Business provides endoscopic system. The Imaging System

produces SLR/compact digital cameras and interchangeable lenses as

well as digital camera lens module and microlens.

INFOMATION TECHNOLOGY

EYE CARE

MEDICAL

IMAGING SYSTEM

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Hoya Y5ND2049 Fiche technique Page 2