Dedicated to optical precision components Ωand Solution of high↕-tech core solutions

Home page

Do you really understand what a viso→r is? Don't believe it, take a look

發布時(shí)間(jiān)：

2023-02-15 14:35

　　The shading ring plays a role "in shading, such as the s‌hading ring of the mobile phone> lens and the lens shading ring of the ca¥mera lens. It is a piece of Mylar sheet☆ that is stamped and formed♣ with SOMA shading matΩerial and embedded in the lens. Because it has↓ a shading effect, everyo$ne calls it It is the light-shielding ring and light-shielding gasket.

　　The purpose of the shading ring:

　　Lens Hood (Lens Hood) is a com♣mon photographic accessory installed Ωin front of the camera lens. There are many materials such as metal, ±hard plastic, and soft rubber. As the name implies, the function of the hood is to block excess l ight. The camera lens is composed of multiple lens∞es. When the sun shines into the le™ns, the light will be continuously reflected between the lens≤ and the lens, resulting in ghost images or the feeling of grayαish photos, so the hood can help i™mprove the image quality .

　　The blue line is the light path when it is normall±y phased. The gray line is the surrounding interfeΩrence light. The light is reflected by the bottom of the rear ☆edge of the lens (red line). At thisσ time, the light reflects forwa‌rd again with the front edge of the lens, and finally↓ returns to the sensor to produce a halo phenomenon.

　　When the light enters the lens b÷ody, it is conical, but the shielding of the lens body will block≠ the unwanted light on the four sides and make the imag§e become a rectangle, so the phot≤o we see will be a rectangle instead of a circle. From this we can imagine that the light that enters the lens ★body and is helpful for imagi☆ng should be a rectangular quadrangular pyramid instead of a cone, so the ₹hood is effective to bloΩck the excess light, and the photos taken with the hood i↔nstalled generally have richer colors. And deeper sa↔turation.