If you put an additional glass polarisation filter in front of the optics, the polarised light is selectively blocked or passed. The principle of polarisation and filter effect is described in detail in the chapter "polarisation filters". There you can also find further examples.

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The document provides information about bright field and dark field microscopy. It begins with an overview of different types of light microscopes including bright field, dark field, phase contrast and fluorescent. It then describes the principles, components and working of bright field microscopy, including sample illumination, contrast mechanisms, magnification and applications. Next, it discusses dark field microscopy, explaining how it works by blocking the light source and illuminating samples with scattered light so they appear bright against a dark background. It compares key differences between bright field and dark field microscopy and lists some common applications and advantages of dark field microscopy.Read less

Metallic sheen on metal surfaces can be suppressed by using a polarised source of light and a polarisation filter. The metal parts appear very dark in the camera image. Especially non-plane objects like cylindrical, curved metal surfaces or crinkled foils (aluminium blister, etc.), can usually hardly or very difficultly be illuminated in a homogenous way.

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To light, or illuminate, from the rear or from the side away from the camera or the viewer. Webster's New World. To illuminate something from behind.

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Learn more on DePuy Synthes Loaner Sets. Provided non-sterile, and are required to be fully cleaned, inspected and steam sterilized prior to surgical use.

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This International Standard provides requirements to perform reproducible photometric and colorimetric measurements on road illumination devices.

Depending on the position of the test objects in the inspection area, these reflections would "move" strongly on the surface. A taught object can then look very different to the inspection software: this leads to misinspections. These difficulties are avoided by using the mentioned illumination and filter technologies.

By means of a polarisation film in front of any industrial illumination, light can be polarised. There are flexible foils with a thickness of 0.25 mm to 1 mm available to the user. Thicker filters of 2 mm and more are typically delivered as hard plastic plates.

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Fraunhofer IMS develops and uses processes and newest bonding technologies on chip and wafer level for the production of backside illuminated optical sensors.

LED bulbs can work in projector headlights, provided they are compatible in terms of size, heat management, and light pattern.

Browse the top-ranked list of best on-camera lights below along with associated reviews and opinions.

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