Temperature control application solution for optical lens aging test production line

《Application Background》

In the field of optics, Goertek possesses a complete industrial chain capability from precision injection molding to coating, assembly, and testing. Its optical components are widely used in smartphones, wearable devices, and 3D sensing systems, making it a benchmark enterprise in China's optical component manufacturing industry.
In the aging test of optical lenses, the accuracy and stability of temperature control directly determine the reliability of product performance evaluation. Traditional heating methods are slow to respond, have large fluctuations, and uneven temperature differences, making it difficult to meet the aging verification requirements of high-end optical components, camera modules, and other products.

Aging production line temperature control solution system architecture

The solution uses the BlueGuard TTD7008 TEC precision temperature controller as its core to build a high-precision temperature control system for optical lens aging testing. The entire line adopts a distributed network architecture, with a PC centrally managing 320 test positions, achieving automatic heating, temperature control, and cooling from room temperature to 80℃. The system achieves a temperature control accuracy of ±0.1℃, supports multi-channel parallel processing, curve recording, and anomaly monitoring, ensuring consistent and traceable test data, and providing a stable and efficient temperature control solution for optical lens performance verification and reliability assessment.

The entire line adopts a distributed network architecture:

• PC Host Computer → Controls and monitors temperature data across the entire line
• 5 Industrial Switches → Connect to 8 TTD7008 Temperature Controllers respectively
• Each temperature controller controls 8 independent test positions
• One aging test device has a total of 64 temperature control points (4 drawers × 16 temperature control points/layer)
• The entire line has a total of 320 independent test positions.

TEC Thermostat TTD7008

The TTD7008 TEC precision temperature controller launched by Blue Guardian Temperature Control achieves precise regulation from -55℃ to 200℃ throughout the entire process through high-precision temperature acquisition and bidirectional cooling/heating control, ensuring consistent temperature, controllable curves, and traceable results at each test station.

技术参数

Application value of the solution

01. Precise Temperature Control for Consistent Testing

The TTD7008 employs a high-precision temperature acquisition chip and intelligent PID control algorithm, achieving a temperature control accuracy of ±0.1℃ and maintaining stable output even when multiple channels are running simultaneously. Each test station has an independently adjustable temperature with a temperature difference of less than 0.1℃, ensuring uniform heating of optical lenses during aging and making test results repeatable and comparable.

02. Multi-Channel Parallel Operation for Improved Production Line Efficiency

Each temperature controller has 8 independent temperature control channels, enabling simultaneous operation of 320 aging test stations. Combined with a centralized monitoring system, it supports group control and batch startup, significantly shortening the testing cycle, improving overall line testing efficiency, and meeting the needs of parallel aging of large batches of optical components.

03. Smooth Heating and Cooling for Extended Component Lifespan

Utilizing TEC bidirectional temperature control technology, it achieves precise heating and cooling control, with smooth temperature changes and no overshoot, avoiding lens deformation or coating stress damage caused by temperature fluctuations. A stable thermal cycling environment effectively improves testing reliability and ensures accurate lifespan assessment of optical components.

04 Industrial-grade protection, worry-free stable operation. The entire unit adopts an industrial-grade design, featuring multiple protection mechanisms including over-temperature, short circuit, and wire breakage, enabling long-term stable operation under continuous 24-hour aging conditions. Strong anti-interference capabilities ensure that the temperature control system maintains high reliability and safety even in complex testing environments.