Optical window protection lens and optical film film test method

2021/06/03

Optical windows based on different materials are coated with a specific waveband antireflection coating to reduce reflection, and their center wavelength is near the commonly used laser wavelength, covering a wide range of wavelengths. It is widely used in the protection of electronic sensors, optical lenses, and laser processing heads.

The standard circular window of    K9 material has excellent transmittance from visible to near infrared (350-2000nm), and is the most commonly used for preparing high-quality optical components For optical glass, when the extra advantages of UV fused silica (good transmittance and low thermal expansion coefficient in the UV band) are not required, the H-K9L laser focusing lens is generally selected. It is an optical lens without coating. We can also provide you with various coating services according to customer needs.

   The standard circular window of quartz material has high transmittance from ultraviolet to near infrared (185-2100nm). It is used in ultraviolet to Ideal for near infrared wavelength range. In addition, compared with H-K9L (N-BK7), UV fused silica has better uniformity and lower thermal expansion coefficient. It is an optical lens without coating. We can also provide you with various coating services according to customer needs.

  The adhesion of the coating film layer refers to the bonding strength between the film and the laser protective lens substrate or film layer, and its unit is the force or energy per unit area. At present, the measurement methods of coating film adhesion mainly include peeling method/scratch method and stretching method.

  1. Peeling method

   The peeling method is the most commonly used method to detect the adhesion of the film, and the peeling strength is not less than 2.94N.cm cellophane tape is adhered to the film surface, slowly pull the cellophane tape from the part to the direction of the coating surface to see if the film falls off, so as to qualitatively judge the adhesion of the film.

  2. Scratch method

   The scratch method is to put a probe with higher hardness perpendicular to the surface of the film and pass The method of applying a laser collimator load to a scratch test on the film to evaluate the adhesion of the film. When the shear force at the leading edge of the probe exceeds the adhesion of the film, the film will be broken and peeled off. While the probe is moving, gradually increase the load, and observe the critical load required to cut the film under a microscope to expose the substrate. And use this as a measure of adhesion. In addition, when the load is constant, the integrity of the film peeling marks also depends on the adhesion of the film. Therefore, the adhesion of the film can also be compared according to the integrity of the edge of the scratch.

  3. Stretching method

   The stretching method is the use of bonding or welding to bond the film to the optical lens. On the end face of the stretch rod, measure the size of the load required to stretch the film from the substrate. The adhesion of the film is equal to the ratio of the critical load of stretching to the area of u200bu200bthe stretched film. Obviously, in the case of using an adhesive, the degree of adhesion determines the upper limit of the adhesion that can be measured by this method. Welding can increase the bonding strength of the interface, but the welding process may change the adhesion between the film and the substrate due to the influence of the local heating temperature.

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  IPL (intensepulseligth, optical lens intense pulse light) The beauty filter is the key optical element of the IPL beauty equipment. It blocks ultraviolet rays and transmits useful light from 400 to 1200 nm. Through the IPL filter, the IPL instrument can play a role in hair removal, beauty, and treatment of vascular diseases.

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   Shenzhen Wangxinsheng Technology Co., Ltd. is a professional factory that develops and produces high-power laser (laser) lenses, dichroic lenses, laser mirrors, and beam splitters. It is especially good at high-power laser fiber cutting machines, The protective lens, focusing lens and collimating lens of the laser welding machine, the power range is 500W-8000W. The factory is located next to the Guanlan Golf Club, Baoan District, Shenzhen, with an experienced Ru0026D and production team. The equipment includes Taiwan Maijun polishing machine, Korean Era Seiko edging machine, Japanese new Coron coating machine, glass cutting machine, ultrasonic, American LAMBDA950 spectrophotometer (measuring range 175nm-3500nm), interferometer, eccentric meter, etc. With complete production technology and professional testing capabilities, rigorous technical processes and strict quality management system guarantee the excellence of the quality of optical lenses. http://www.wxsjp.com/

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