TECHNICAL INFO.
About vacuum deposition processing (optical thin film)
Vacuum vapor deposition is the process of thin-filming the surface of a substrate in a vacuum.
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Centering process 1: Optical axis and radius of curvature of lens surface
This section describes the process of forming a lens with no shoulder flesh and eccentricity with respect to the optical axis and grinding the outer diameter of the lens so that the optical axis coincides with the central axis of the lens system when assembled as a lens system.
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Centering process 2: Radius of curvature of optical axis and lens surface
Centering flow by Bell clamp
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Centering process 3: Centering / chamfering
The outer circumference is ground to fit the shape and dimensions, and the final chamfer is used to determine the effective diameter, height, and depth, and the centering process is completed.
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