Convex Spherical Mirrors
Convex Spherical Mirrors
At Star-Optics, we manufacture high-precision convex spherical mirrors designed for optical systems that require wide angular coverage and stable imaging performance. A convex spherical mirror features an outward-curving reflective surface that causes incident light rays to diverge after reflection. This diverging behavior increases the effective field of view and makes the optical convex mirror particularly useful in applications where spatial awareness is more important than image magnification.
The curvature of the mirror surface, defined by its radius of curvature, directly determines the focal length and the divergence angle of reflected rays. When collimated light enters the system along the optical axis, the reflected rays spread outward, forming a virtual image that is upright and reduced in size. This predictable imaging behavior is the reason convex spherical mirrors are widely used in observation, monitoring, and auxiliary imaging systems.
Convex Mirror Geometry
Convex mirrors are curved outward like the outside of a sphere. The reflective surface faces out. The object and viewer are both outside the mirror, and the center of the curve is behind the mirror surface. The image appears between the focal point and the mirror, and stays right-side up no matter where the object is.
For smaller mirrors, image distortion from the curved shape is low, so spherical convex mirrors work well without extra corrective parts. Mirrors with shorter focal lengths give a wider viewing angle, which is useful in safety mirrors, alignment systems, and wide-view applications.
Custom Convex Spherical Mirror Solutions
Besides standard sizes, we make custom convex mirrors based on your needs. Options include diameter, curve radius, material, coating, and tolerances. Our team works with you to match what you need with what can be made, especially for small or space-limited designs.
We make both convex and concave mirrors for single prototypes or large orders.
Contact us to discuss your application or request a quote.
