Convex Spherical Mirrors

Avantier is a reputable manufacturer of convex spherical mirrors, known for producing high-quality optical components suitable for diverse applications. These convex mirrors feature a curved reflecting surface that bulges outward, away from the incident light. The radius of curvature determines the degree of surface bending, influencing the focal length and the behavior of reflected rays. When parallel rays, aligned with the principal axis, strike the convex mirror, they are reflected outward, effectively expanding the field of view in imaging systems. The images formed by these mirrors are virtual, upright, and smaller than the object, making them ideal for various imaging applications where a wider field of view is desired, such as security mirrors or rearview mirrors in vehicles.

Geometry

Convex mirrors possess a spherical geometry, with both the incident light and the viewer positioned outside the sphere. The center of curvature is located at the center of this extended sphere, while the optical axis runs between the real image and the center of curvature. The image produced by a convex mirror is virtual, appearing between the focal point and the mirror itself. This image is consistently reduced in size and remains upright. Small spherical mirrors exhibit minimal spherical aberration, allowing them to approximate the performance of ideal parabolic mirrors. Additionally, mirrors with shorter focal lengths provide a wider field of view.

Coating and Substrate:

They are made from high-quality materials, including BK7 Grade A optical glass, Corning Fused Silica 7980, JGS1, and JGS2.
BK7 offers high refractive index homogeneity and uniform transmission in the visible spectrum.
Corning Fused Silica 7980 has low thermal expansion and good ultraviolet transmittance.
JGS1 is high-quality ultraviolet-grade fused silica with low thermal expansion and excellent UV transmission.
Mirrors are coated with metallic coatings, such as enhanced aluminum for visible spectrum applications and protected gold for NIR, MWIR, and LWIR spectra.

Factory Standards

Avantier employs state-of-the-art metrology equipment to ensure quality.

Surface Flatness	λ/4
Diameter Tolerance	+0, -0.1mm
Clear Aperture	90% of the diameter
Surface Quality	40-20

Custom Convex Spherical Mirrors

Avantier offers customization options and can collaborate with customers to meet specific manufacturing limits or custom specifications. We manufacture both concave and convex mirrors and have design specialists available for consultation.

Avantier provides a range of custom convex spherical mirrors with various material options, coatings, and customization capabilities, making them a suitable choice for a variety of optical applications. Contact Avantier today to schedule a consultation or request for quote for your next project.