Any optical lens, whether new or old, we can use the term "lens description" to distinguish between the number of the lens, the types of glass, mirror surface radius, the thickness of the lens, the distance between the lens, and the diameter of the lens, and so on. When light from an object passes through a glass surface, the beam of light is refracted. The amount of light refracted depends on the refractive index of the glass, as we have learned in physics textbooks in middle school. If the lens designer knows exactly where the light is in the lens, and the Angle of the incident, he can accurately track the light through the light theory system. Angles and distances can be worked out by the sine and the cosine of the trig functions. Therefore, through simple plane geometry, the path of light passing can be traced.
The design and use of optical lenses must be closely combined
The evaluation of optical lens is directly related to three aspects of the use, design and manufacture, and the relationship between them is very close. The designers of optical lenses must practice deeply, overcome communication barriers with users, and be able to think in their own way. This process, in effect, turns the user's "design requirements" into "design indicators" an then into "design results". When the designer is fully aware of the requirements of users' design, then the feasible method of design can be determined. And according to the aberration design rules, we can determine the various aberration balance schemes, and then optimize the design, and finally meet the design result that meets the requirements of use.
However, how to evaluate the optimization design to meet the requirements? In fact, there is a question of how "design results" reflect "design requirements". The principle of imaging quality evaluation in optical design stage is based on the theory of long - term optical design and processing practice. However, according to these evaluation principles, the evaluation of the lens cannot replace the actual image quality of future products. The final image quality evaluation needs to be tested by various instruments after production and manufacturing. Generally speaking, according to the design of the requirements, it always indicates the use effect after the product is processed. There is an organic connection between the two, there is a relative consistency, there is a relationship between "becoming" and "embodiment". The "best" and "imaging quality optimization" in actual design is not necessarily the "most suitable" system for actual engineering. From the point of view of engineering design, a successful design system is often not designed with the most pointed technical means and materials. It is able to complete the design requirements, the cost is the guiding principle. The design results show that the quality evaluation of the image is very important. It requires the design staff to explore the relevant boundary disciplines and train the system engineering thinking.
All in all, the optical lens
is composed of a series of lens units. Its design is a highly creative work, and designers must learn about various optical aberration characteristics based on experience and keen insight. It is understood that the design of modern optical lenses can be used to challenge the limits of film particles. In theory, the lens can concentrate the light effectively, and can make the perfect optical lens. But idealized perfect lenses have not actually been designed so far, because in actual production, limited to materials and conditions, the optical lenses produced are not completely ideal, and there will be deviations.