Optical, opto-electronic and photoelectric sensors for sensing light and light reflected by objects; [ light barriers, light scanners, safety light grids and light grids for measuring object dimensions; ] optical, opto-electronic, and photoelectric sensors for use in recognizing the [ shape, ] position, [ contour, volume, distance, ] texture or surface characteristics of articles for [ the purpose of automatic inspection, for inspection of plain or web-like materials and checking the characteristics of such materials, for fault recognition, ] for automatic identification, quality control, positioning, handling and control of articles, and for the purpose of automation in the fields of manufacture, quality control, storage, flow of goods [, sales, transport, laboratory, plants, traffic, installations and public buildings; electronic and optical sensors for the purpose of measuring a position or length or distance; electronic position encoders; optical sensors for distance measurements; optical, opto-electronic and photoelectric sensors for sensing light and light reflected by objects for the purpose of safety guarding and monitoring of rooms, spaces, points of danger or danger zones; safety light curtains; scanners working on an electronic basis and in the field of infrared, visible or ultraviolet radiation; scanners which operate with a scanning beam for the scanning of specific surfaces and spatial regions ]

Installation, maintenance and repair of electric, optic and opto-electronic appliances