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2020519 — The principle when the light rays fall on the smooth surface, the angle of reflection is equal to the angle of incidence, also the incident ray, ...

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Köhler illumination is used when the source is not uniform, such as a coiled tungsten filament. Köhler illumination is characterized by imaging the source through the film onto the projection lens. The film is placed adjacent to the condenser, where the illumination is quite uniform, provided the source has a relative uniform angular distribution of intensity.

Criticalillumination

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The paraxial layout below shows Köhler illumination used in a projection system. The source is imaged by a condenser onto the projection lens. The projection objective images the film onto the screen. The purple dotted lines show the marginal and chief rays from the source. The black dotted lines show the marginal and chief rays from the film.

Fluorescent light glasses do not protect eyes from ultraviolet light, which causes dizziness.

科勒照明

TECHPOLYMER can be added to a transparent resin such as acryl and polycarbonate or used as a coating on a transparent surface film such as PET resin.

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All types of eyewear, including prescription and non-prescription glasses, contact lenses and lens implants, should absorb UV-A and UV-B rays. For UV protection ...

We've put together 4 easy steps to help you work with unflattering light and create images that will impress your couple.

It's quick and easy: Just fit the glass pieces together, apply glue with the needle and watch as it is quickly drawn into the glue joint. Then turn on the ...

A Shevchenko · 2017 · 70 — We study such polarization dynamics and, for the first time to our knowledge, measure the characteristic time, called the polarization time.

TECHPOLYMER is a brand name for organic polymer microparticles. Its light-diffusing properties are leveraged in a range of displays and light covers.