Molds & Tooling
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PSU Optical Lens Molding
Problem Phenomenon
After PSU optical lens molding, surface form accuracy and optical performance do not meet standards; internal stress birefringence exceeds the limit.
Cause Analysis
PSU optical parts have extremely high requirements; internal stress produces birefringence; surface form replication depends on mold temperature and holding pressure; uneven cooling causes distortion.; During on-site troubleshooting, verify item by item according to this mechanism, avoiding blindly adjusting the machine based solely on experience
Solution
①Low-stress high mold temperature process; ②Optical-grade mold; ③Precise holding pressure control; ④Full inspection of optical performance.; After adjustment, continuously sample to verify the effect, and resume mass production only after confirming stability
Key Takeaway
PSU optical parts are an extreme process challenge; stress birefringence is the core indicator; full inspection guarantees delivery quality.; After confirming effectiveness, solidify the parameters and practices into the work instructions to prevent recurrence
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