News

Generally speaking, a lens with a focal length of 18-35 mm can be regarded as a wide-angle lens​. The basic characteristics of wide-angle lens are large lens angle and wide field of vision. The range of scenery observed from a certain viewpoint is far greater than that seen by the human eye at the same viewpoint. It can emphasize the perspective effect of the picture, be good at rendering the foreground, and express the sense of distance and proximity of the scene, which is conducive to enhancing the attractiveness of the picture. Read More

The zoom lens is a lens that can continuously change the focal length. Relative to fixed focal length, it is a lens that can continuously change the focal length. In addition to the fixed lens group, there are also movable lens groups. The zoom lens consists of three parts: wide, standard, and long. One lens can not only replace three kinds of lenses but also continuously change the scene of the picture by continuously changing the focal length to form the effect of pushing and pulling the lens. The focal length of the zoom lens is generally between 28 and 200 mm. Read More

Both are variable-focus lenses with variable focal length and adjustable sharpness. But there are a few fundamental differences:A, structurally, the continuous zoom lens has two sets of adjustable lenses, which are used to adjust the focal length and sharpness. Dual field lenses have only one set of Read More

1. Zinc selenide (ZnSe)CVD zinc selenide (ZnSe) is a chemically inert material with high purity, strong environmental adaptability, and easy processing. It has low light transmission loss and good light transmission performance. It is the material of choice for high power CO2 laser optical component Read More

MWIR Lenses: How Strong IR Light?Infrared light is a longer-wavelength, lower-energy electromagnetic radiation that lies between visible light and microwaves on the spectrum. Infrared light is widely used in many fields, such as thermal imaging, infrared night vision, medical diagnosis and industria Read More

A long-wave infrared thermal imager is an imaging instrument that uses the principle of thermal radiation to detect the temperature distribution of an object and generate a corresponding infrared image. It has a wide range of applications in many fields, such as industry, military, medical and so on Read More