What matters should be paid attention to when processing optical glass prisms?

In the process of optical glass prism processing, the following matters need to be paid attention to:

I. Material Selection and Inspection

Select high-quality optical glass materials to ensure good optical uniformity, transparency and refractive index stability. When purchasing materials, ask reliable suppliers for detailed material specifications and test reports.

Strict inspection of raw materials to check whether there are defects such as bubbles, impurities and scratches. Optical microscope, interferometer and other equipment can be used for testing, and materials that do not meet the requirements should be returned in time.

Second, the processing environment control

The processing workshop should be kept clean and dry, with stable temperature and humidity. Temperature changes will affect the dimensional stability of glass, and too high humidity may cause the glass surface to get wet and affect its optical properties. Generally speaking, the temperature should be controlled at 20 2℃ and the relative humidity should be controlled at 40%-60%.

Take effective dustproof measures to prevent dust particles from adhering to the glass surface. Air purification equipment, dust-free workshop, etc. can be used, and operators should wear dust-free clothes and gloves.

Iii. Key points of processing technology

Cutting: adopt high-precision cutting equipment to ensure accurate cutting size and neat edges. Pay attention to cooling during cutting to avoid stress caused by overheating of glass.

Grinding: Use appropriate grinding materials and tools to gradually reduce the roughness of the glass surface. Pay attention to uniform pressure during grinding to avoid local over-grinding or under-grinding. At the same time, we should always check the quality of the grinding surface to ensure the smoothness and smoothness of the design requirements.

Polishing: Polishing is the key to determine the optical performance of prism. Select high-quality polishing powder and polishing pad, and control polishing pressure and speed to obtain a surface with high gloss and low roughness. During polishing, attention should be paid to prevent scratches and pits, and polishing quality can be ensured by changing polishing materials regularly and adjusting polishing parameters.

Coating: If the prism needs to be coated, appropriate coating materials and processes should be selected to ensure the firmness, uniformity and optical performance of the film. During the coating process, the parameters such as temperature, humidity and vacuum degree of the coating environment should be strictly controlled.

Fourth, quality inspection and control

In the process of machining, quality inspection should be carried out many times, including size measurement, surface quality inspection and optical performance test. Measuring tools, microscopes, interferometers, spectrophotometers and other equipment can be used for detection.

Strict tolerance control should be carried out for key dimensions and optical performance indexes. If nonconforming products are found, they should be analyzed and handled in time to find out the reasons and take corrective measures to prevent similar problems from happening again.

Establish a perfect quality record and traceability system, record the parameters and quality data of each processing link, so that problems can be traced and analyzed.

V. Safe operation

Some dangerous equipment and tools will be used in the process of optical glass processing, such as cutting equipment, grinding machine, polishing machine and so on. Operators should receive professional training, be familiar with the operation methods and safety precautions of the equipment, and strictly abide by the operation procedures.

Wear necessary personal protective equipment, such as goggles, gloves, masks, etc., to prevent glass fragments, dust, etc. from causing harm to human body.

Maintain the equipment regularly to ensure the safety performance of the equipment. In case of equipment failure or abnormal situation, the operation should be stopped immediately and the equipment should be repaired in time.