NLS-Glossary

Laser sensor is a kind of sensor which uses laser technology to measure. It is generally composed of laser, optical parts and photoelectric devices. It can convert the measured physical parameters, into optical signals, and then use photoelectric converter to convert the optical signals into electrical signals. Through the filtering, amplification and rectification of corresponding circuits, the output signals can be obtained, so as to calculate the measured quantity. Laser technology has the characteristics of strong direction, high brightness and good monochromaticity. It is widely used in industrial and agricultural production, national defense and military, medical and health, scientific research and other aspects, such as distance measurement, precision detection, positioning, as well as length benchmark and optical frequency benchmark.

est le rayon local de l'axe de la fibre lorsque la fibre est pliée, c'est-à-dire que l'axe de la fibre suit une courbure. En règle générale, l'atténuation augmente de façon exponentielle avec la diminution du rayon de courbure. Le rayon de courbure minimum est le rayon de courbure le plus court auquel une fibre peut être pliée sans que la contrainte induite dans la fibre dépasse la contrainte autorisée.

Also known as a wand. A scanning device which is used as a hand held bar code reader. Requires direct contact with the printed bar code field.                                                  

Linear barcodes are known under names like Code 39, Code 128, UPC, EAN, 2of5...
Linear barcodes encode the information in one way (=one dimension), so they are also called onedimensional barcodes (1D). The information is stored in the relationship of the widths of the bars (spaces) to each other. In most of these symbologies the height of the bars is not relevant, except for some height-modulated Postal Codes (e.g. Australia Post 4-State or USPS Intelligent Mail® Barcode / IM® Barcode).

It can be divided into chelate laser, inorganic liquid laser and organic dye laser, the most important of which is organic dye laser. Its main feature is that the wavelength is continuously adjustable.

A Department of Defense program intended manage inventory by placing Code 39 bar code symbols on all items sold to the Federal Government.