Znselenses price

Our zinc selenide lenses for laser cutting and laser marking are made from high-quality material with the lowest absorption values. In combination with an anti-reflective coating, PLEIGER optics enable a high-power CO2 laser to be focussed with excellent precision. For the highest laser powers above 4 kW, we offer a low-absorption AR/AR coating that minimises thermal lensing.

Most magnifying glasses are double-convex lenses and are used to make objects appear larger. This is accomplished by placing the lens close to the object to be viewed. In this way the light rays are bent toward the center of the lens. When these bent rays reach the eye they make the object appear much larger than it actually is. However, if the object is far enough away from the lens, the image will flip, appearing smaller and upside down. The distance at which this flip occurs is twice the focal length (the distance from the optical center of a lens to the point where the light rays converge) of the lens. The focal length of any lens is determined by the amount of curve on the lens’ face. The magnified image is called a virtual image while the smaller, inverted image is called the real image.

ThorlabsZnSe Lens

PLEIGER optics made of silicon, germanium, ZnSe and ZnS are used in thermography, IR spectroscopy, night vision devices and target tracking. Our product range includes windows, spherical and aspherical ZnSe lenses as well as windows for broadband applications from NIR to FIR.

ZnSewindow

Many people have used a magnifying glass and sunlight to ignite a piece of paper. When the lens is held at exactly two focal lengths from the paper, all of the light will be concentrated into a tiny point, generating enough heat to start a fire.

The magnifying glass is one of the most ancient optical devices known to science. Thousands of years ago Egyptians used chips of crystal or obsidian (a type of shiny stone) to better view small objects. In Rome Emperor Nero (a.d. 37-68) was known to have peered through gemstones at actors on a distant stage. The first magnifier constructed for scientific purposes is believed to have been designed by the English philosopher Roger Bacon (circa 1220-1292) sometime during the thirteenth century.

We manufacture laser optics to the latest standards for all applications. Whether in series production or in custom manufacturing of specific optics components – the highest quality standards and constant innovation guarantee you flawless optics that make the difference in your areas of application.

ZnSe Lens20mm

We manufacture our ZnSe lenses according to individual customer specifications. Typical products are meniscus lenses, plano-convex lenses and Brewster windows. On request, we can supply lenses including an AR/AR coating for a specific laser wavelength or for a broadband application.

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The magnifying glass was the forerunner of the compound microscope (in which a series of lenses are used to focus, magnify, and refocus an image), one of the basic tools used in medicine.