Dispersion coefficient of filter parameters
The light we see in our daily lives is actually composite light, for example, using a prism to let sunlight pass through the prism, the light will be decomposed into seven colors by the prism, and this phenomenon is called dispersion. This dispersion phenomenon is of great value to the jewelry and diamond jewelry industry, but it is a major problem for optical lenses. If it is a glasses lens, it will straighten the lens and cause blurred vision even when worn.
To handle this problem scientifically, the first step is to identify the parameter of the problem, which is the dispersion coefficient, also known as the Atterberg number. The smaller this value, the more blurry the lens will be. At present, the dispersion coefficient of lenses is generally between 30 and 60. The higher the refractive index, the lower the dispersion coefficient. For resin lenses, the refractive index has a significant impact on the dispersion coefficient. For a cr-39 lens with a refractive index of 1.50, the dispersion coefficient is 58. Most domestic companies choose the M6 product developed by Mitsui Optical Company in the late 1970s, with a maximum dispersion coefficient of only 37. As the largest optical commodity company in the world, based on its top data development capability and optical planning, Hoya has made epoch-making innovation on glasses lenses, upgraded VCD to DVD, and planned EYAS patent data with a refractive index of 1.6, so that the Abbe number reaches 42, ensuring the visual resolution of the wearer and the anti-aging property of such materials. Function, durability, and heat resistance are impossible to achieve among similar products.
It is believed that everyone will remember that eight years ago, few people knew that resin lens was used in the glasses industry. But in the following years, as Hoya, Yifu Road and other international resin lens production groups were established in Chinese Mainland, this kind of lens product has the outstanding advantages of lightweight, impact resistance, wide range of application, and soon replaced the original glass lens positioning. Resin lenses not only meet the wearer's needs for simplicity, safety, aesthetics, and comfort, but also enhance the wearer's original purpose from a high-tech perspective; — Visual resolution.
But it is worth reminding all consumers that some illegal enterprises are only focusing on the reality that the eyewear industry is not familiar to more people, producing and distributing low-quality, rough, and non professional standard lenses to obtain unjust wealth. After all, this not only harms consumers, but also disrupts shopping centers.
However, it is not only the dispersion coefficient that determines the quality of the lens, but more importantly, the dispersion coefficient is beyond doubt. Therefore, when consumers choose optometry at an optometry store, they must specifically inquire with the staff about the refractive index and Abbe number of the lenses, so that they know and can use reasonable fees to meet the needs of correcting vision. Generally speaking, professional eyewear stores will give consumers a very satisfactory answer in these aspects, while some small shops can hardly explain the reasons for wearing glasses, except for blindly asking you to steal money.
To handle this problem scientifically, the first step is to identify the parameter of the problem, which is the dispersion coefficient, also known as the Atterberg number. The smaller this value, the more blurry the lens will be. At present, the dispersion coefficient of lenses is generally between 30 and 60. The higher the refractive index, the lower the dispersion coefficient. For resin lenses, the refractive index has a significant impact on the dispersion coefficient. For a cr-39 lens with a refractive index of 1.50, the dispersion coefficient is 58. Most domestic companies choose the M6 product developed by Mitsui Optical Company in the late 1970s, with a maximum dispersion coefficient of only 37. As the largest optical commodity company in the world, based on its top data development capability and optical planning, Hoya has made epoch-making innovation on glasses lenses, upgraded VCD to DVD, and planned EYAS patent data with a refractive index of 1.6, so that the Abbe number reaches 42, ensuring the visual resolution of the wearer and the anti-aging property of such materials. Function, durability, and heat resistance are impossible to achieve among similar products.
It is believed that everyone will remember that eight years ago, few people knew that resin lens was used in the glasses industry. But in the following years, as Hoya, Yifu Road and other international resin lens production groups were established in Chinese Mainland, this kind of lens product has the outstanding advantages of lightweight, impact resistance, wide range of application, and soon replaced the original glass lens positioning. Resin lenses not only meet the wearer's needs for simplicity, safety, aesthetics, and comfort, but also enhance the wearer's original purpose from a high-tech perspective; — Visual resolution.
But it is worth reminding all consumers that some illegal enterprises are only focusing on the reality that the eyewear industry is not familiar to more people, producing and distributing low-quality, rough, and non professional standard lenses to obtain unjust wealth. After all, this not only harms consumers, but also disrupts shopping centers.
However, it is not only the dispersion coefficient that determines the quality of the lens, but more importantly, the dispersion coefficient is beyond doubt. Therefore, when consumers choose optometry at an optometry store, they must specifically inquire with the staff about the refractive index and Abbe number of the lenses, so that they know and can use reasonable fees to meet the needs of correcting vision. Generally speaking, professional eyewear stores will give consumers a very satisfactory answer in these aspects, while some small shops can hardly explain the reasons for wearing glasses, except for blindly asking you to steal money.