Bubble Control
Definition
Eliminating or reducing bubbles during production.
Historical Background
1970s: vacuum and ultrasonic defoaming technologies introduced.
Example
Bubbles in screen protector adhesive create rainbow patterns.
Formula
Bubble Rate (%) = Bubble Area / Total Area x 100%
Core Concepts
Optical defect root cause: scatter light, increase haze, reduce transparency.
Extended Applications
Ordinary: <5%; optical: <1%; display: <0.5%; lens: <0.1%; aerospace: <0.01%.