Apr. 05, 2026
What is an Aspheric lens? How to define aspherical lens? The ordinary lenses we usually see have two spherical surfaces — just like a piece cut from a perfect sphere, with the same degree of curvature from the center to the edge. An aspherical surface, however, means: the surface is not a perfect sphere, and its degree of curvature gradually ch
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Mar. 17, 2026
Applications of Cylindrical Lenses
Astigmatism is an optical aberration that can cause images to appear distorted or blurred. It occurs when light rays entering the eye or an optical system are not focused equally in all directions, resulting in different focal points in different planes.
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Mar. 10, 2026
Cylindrical Lens: A Complete Guide
Cylindrical lenses are less common than spherical lenses, yet they play a crucial role in many photonics and optical applications. This guide provides a comprehensive overview to help you understand their structure and function.
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