What Is a Beam Expander?
1. Brief introduction of beam expanderA light or laser beam expander is a scientific instrument that can expand the input beam of parallel light or laser into a larger output beam. In terms of usage, ...
Pentagonal Prism/Half Pentagonal Prism Estimate
The pentaprism deviates the lights beam by 90° through reflection of two surfaces while maintaining image parity. The deviation of the beam will not change the slight rotation of the prism, so it is ...
Production Process of Cylindrical Lens
The production process of cylindrical lens mainly includes rough grinding, fine grinding, polishing, centering and edging.1. Rough grinding of cylindrical lensGenerally, the rough grinding of a small ...
What is the Collimation Function of Beam Expander
1. The collimation function of the beam expanderThe beam expander also has a collimating function, but the beam expander is aimed at the beam (beam with a certain divergence angle). Many lasers on the...
What is a Corner Cube Retroreflector
1. What are corner cube retroreflectorsWhat are corner cube retroreflectors? Today, let’s take a brief understanding. The corner cube retroreflector is generally called Paul prism or Pro prism. It is...
How to Judge the Quality of Optical Lenses?
Ⅰ. There is no good or bad optical lensesTheoretically speaking, the optical lenses can only be suitable or not. Generally, the more expensive the optical lenses, the better the image quality. The op...
The Benefits of Zoom Lenses and the Precautions when Using Them
1. The benefits of zoom lensThe biggest advantage of a zoom lens is: convenience. You don't have to bring a lot of lenses on business trips, making it easier. The zoom lens is relative to the fixe...
Why Use an Anamorphic Lens? How to Use It?
If you like to shoot videos, you must have heard of anamorphic lenses, and even considered buying anamorphic lenses. What exactly is an anamorphic lens? Is the video shot with it really similar to the...
Where Do Fisheye Lenses Work Best?
Because of the creation of unusual images, fisheye lenses are often unfairly regarded as special effects lenses. However, due to the curvilinear way of the fisheye on the periphery, using it in the ri...
Difference Between Fixed Focal Length Lens and Zoom Lens
The zoom lens is a camera lens that can change the focal length within a specific range to obtain different field angles, images of different sizes and different scene ranges. The most prominent featu...
How to Use Cylindrical Lens?
Ⅰ. Introduction of the cylindrical lensIn most cases, the cylindrical lens is made of cylindrical glass, where the cylindrical surface of the cylindrical lens is a precision-treated (curved) optical ...
Comparing Cylindrical Lenses with Ordinary Spherical Lenses
Ⅰ. What is a cylindrical lens?Cylindrical lens is generally used to focus incident light on the line or change the image's aspect ratio. It can form a linear image, and the direction of the beam ...
What Are the Characteristics of Fisheye Camera Lens?
Ⅰ. What is a fisheye camera lens?A fisheye camera lens is a special type of ultra-wide-angle lens. It is small and super wide, showing a distorted spherical world view, most obvious in the curved out...
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