Why Are Bi-Convex Lenses Suitable for 1:1 Imaging?

When an optical system must reproduce an object at 1:1 magnification, even a small imbalance between the object distance, image distance, lens curvature, or lens alignment can produce noticeable dimensional error, coma, defocus, and edge distortion. This is not merely a laboratory inconvenience: in machine vision, metrology, semiconductor inspection, and document imaging, an incorrect lens choice

2026-09-15

Which Way Should a Plano-Concave Lens Face in an Optical System?

Brief summary: Sunday Optics, an optical spherical lens manufacturer, explains that a plano-concave lens is normally installed with its concave surface facing the incoming collimated beam when the goal is to produce a clean, controlled diverging beam. This orientation often reduces spherical aberration compared with placing the plane surface first, but it is not a universal rule. The correct

2026-09-11

What Is a Bi-Convex Lens Used For?

A Spherical Lens bends light through one or two curved surfaces. A bi-convex lens, also called a double-convex lens, has two outward-facing surfaces and is often used to focus or collect light. Engineers may search for a custom bi-convex spherical lens supplier when a standard lens does not match their focal length, coating, or diameter needs. In this guide, we explain what a bi-convex lens is

2026-09-10