A professional who cements optical elements together to form units which have specific optical properties. Responsibilities include:

• Cleans elements, using solvent, tissue, brush, and compressed air device.
• Holds elements together to verify fit.
• Applies cement to element surfaces, using glass rod.
• Presses and rotates elements together to remove air pockets and distribute cement evenly over joined surfaces.
• Centers and clamps elements together.
• Places elements in curing oven for specified period.