Knowledge

Disposal of fluorescent lamps

An intact fluorescent tube or energy-saving lamp poses no health risk whatsoever. However, the situation is different if a tube breaks. All energy-saving lamps or fluorescent tubes contain small amounts...

Disposal of fluorescent lamps

An intact fluorescent tube or energy-saving lamp poses no health risk whatsoever. However, the situation is different if a tube breaks. All energy-saving lamps or fluorescent tubes contain small amounts...

Die Lupe als Brennglas

The magnifying glass as a burning glass

The magnifying glass as a burning glass - a safety risk (burning glass effect). The converging lens of a magnifying glass can focus incident sunlight and thus also its energy...

The magnifying glass as a burning glass

The magnifying glass as a burning glass - a safety risk (burning glass effect). The converging lens of a magnifying glass can focus incident sunlight and thus also its energy...

Dioptrien und Vergrößerung

Diopters and magnification

Magnification of lenses The magnification of lenses is often specified in diopters or with the magnification factor. The higher a positive diopter number, the more the lens magnifies. A simple...

Diopters and magnification

Magnification of lenses The magnification of lenses is often specified in diopters or with the magnification factor. The higher a positive diopter number, the more the lens magnifies. A simple...

Welche Vergrößerung benötige ich?

What magnification do I need?

Which lens is right for me? The choice of lens is basically based on the intended use. A 3 dpt lens is very versatile. At this magnification, you get a...

What magnification do I need?

Which lens is right for me? The choice of lens is basically based on the intended use. A 3 dpt lens is very versatile. At this magnification, you get a...

What is the CRI color rendering index?

Color Rendering Index CRI The color rendering index CRI stands for Color Rendering Index and indicates how well an artificial light source can reproduce the natural color of an object....

What is the CRI color rendering index?

Color Rendering Index CRI The color rendering index CRI stands for Color Rendering Index and indicates how well an artificial light source can reproduce the natural color of an object....

Wie reinige ich die Linse?

How do I clean the lens?

Use a soft, lint-free cloth (e.g. cotton or linen cloth) to clean your lens. Wipe only lightly over the lens surface to avoid scratches.For heavier soiling, you can dampen the...

How do I clean the lens?

Use a soft, lint-free cloth (e.g. cotton or linen cloth) to clean your lens. Wipe only lightly over the lens surface to avoid scratches.For heavier soiling, you can dampen the...