Does the brightness of a laser module degrade during long-term operation?
Problem Description
Although laser modules are highly stable, in long-term continuous operation environments (such as exhibitions or measurement equipment), brightness reduction or color shift may still occur.
Main Causes
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Temperature Rise: Excessive operating temperature reduces laser chip efficiency.
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Lens Contamination: Dust or oil decreases transmittance, causing optical loss.
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Overcurrent Driving: Prolonged high-current operation accelerates aging.
Improvements and Prevention
To maintain brightness stability, the following measures are recommended:
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Use housings or heat sinks with excellent thermal conductivity.
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Monitor module temperature during continuous use and keep it below 45°C.
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Clean optical lenses and windows regularly to prevent contamination.
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Use a constant-current driver to avoid overcurrent stress.
Summary：
Maintaining proper heat dissipation and stable driving conditions can significantly slow brightness degradation and extend module lifespan.
