Circular Fisheye Lens Suitable for Astrophotography
What is a fisheye lens used for?A fisheye camera lens is used for a wide range of activities in different fields: Astronomers use a fisheye camera lens to project the night sky onto a dome in an obser...
Optical Correction of Infrared Lenses
There are two meanings of the term "镜头" in the field of film and television: one refers to the optical component of movie cameras and projectors used to generate images, which is composed ...
Features and Application Areas of Infrared Lens
Understanding infrared lensesIn surveillance environments where infrared light supplementation is not required, regular lenses can be used; in surveillance environments where infrared light supplement...
What Are the Characteristics of Infrared Lenses?
ED glass correction of infrared lensesIn order to achieve clear focus for both infrared light and visible light, it is necessary to ensure that their focal planes are on the same plane. The optical co...
What Are the Functions and Uses of Laser Beam Expanders?
Understanding Laser Beam ExpandersA beam expander, also known as a collimator, is a commonly used Galilean telescope system that usually consists of a negative lens and a positive lens, both of which ...
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