Definition of mask

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Photonics Spectra BioPhotonics Vision Spectra Virtual Events & Summits Educational Institutions Add/Update Your Listing Exhibitor Listing Portal Become an Exhibitor Buyers' Guide Print Edition Marketplace Help

PI Physik Instrumente - Microscope Stages LB ROS 11/24

Photonics Dictionary

mask: 1. A framelike structure that serves to restrict the viewing area of the screen when placed before a television picture tube.
2. In photolithography, a photomask (or mask) is typically a patterned transparent plate or an opaque plate with patterned holes or transparencies that uses a laser light source to transfer and print the pattern by an etching process onto a substrate that is typically a silicon wafer used in integrated circuitry.

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