Manufacturing Process of Optical Lenses
Below is a list of steps used to produce lenses
Order Preparation
Order is sent to manufacture
Lens is calculated individually
Data for production is saved
Two lenses from inventory are pulled
conveyor belts used to transport to next step
Blocking
Ensure lens are in correct position
Mounted securely for machine tools
Protective lacquer is applied
“welded” by a metal allow to form, polish, and engrave
Forming
Design is applied
usually automated with a CNC machine
direct polishing
Roughness is removed
shape and optical power finalized
De-Blocking and Cleaning
Blocking materiel is melted
Clearing occurs with brush washing
Cleaning agents and high purity watery is used
Lens cleaned with air
Tinting
Plastic tins can be any color
dyes are similar to textiles
glasses are dipped
Glass tints limits colors
dyes are metal oxides
applied in layers
Coating
Hard protective layer
about two microns thick
makes lenses scratch resistant
Antireflective coatis applied
can be 9 layers makes lenses smooth
Resistant to dirt and water
Quality Assurance
Inspected before delivery
visual inspection for dust, damage, and right reflection color
Machines used to check refractive power, axis, cylinder, thickness, design, diameter
Lens aligned by electron focimeter
Despatch
Printing of delivery note,
Automated packaging,
Insertion of warranty card
Dispatched to a location
Glazing
Insertion of lenses into frames
Must be done by professional
Precision is required
Amateur can ruin lenses, impair visual quality, and cause aberrations
 Packaged Chillers Non-expandable (integrated pump tank) 1.5Ton – 20Ton Single / Dual Circuits Single / Dual Pumps |
 SAE Series Modular Chillers Expandable (pump & tank on separate skid) 1.5Ton – 200Ton Single / Dual Circuits |
 SAR Series Split Chillers Expandable (Outdoor Condensing Unit) (pump, tank, evaporator on indoor skid) 1.5Ton – 200Ton Single / Dual Circuits |