Optical mirror is an optical element which has reflective function. Accordingly shape, it can divide into three parts, that is flat mirror, spherical mirror, aspheric mirror. Accordingly, degree of reflection, it can divide into two parts, that is total reflection mirror and half reflecting mirror.
On the back of the optical glass make a metallic silver or aluminum or gold film by vacuum coating to reflect the incident light. First surface mirror the reflected image has no distortion, no glint, and it’s also called front surface mirror, it’s widely used for optical high-fidelity scanning reflection imaging, beam bending, interferometry, imaging and illumination.
Commonly use polishing glasses or metal as substrate made a reflected coating on it, including metal film and dielectric coating, metal coating material including gold, silver, aluminum, aluminum mirror has very high reflection rate from UV to IR, film fastness and stable, silver mirror have high reflectance ratio from VIS and IR, AOI changed slightly and low polarization effect, gold mirror has very high reflectance rate, strength and stability in IR area, better than silver coating. Metal film is soft and easily to scratch and damage, so it’s often plated with a protective film outside the metal film, if need high reflection ratio choose dielectric coating film, it can improve the reflectivity and reduce the absorption loss.
AOI and wavelength will affect the reflectance ratio, commonly AOI is 0° or 45°
CCRQ supply flat surface mirror, spherical concave mirror, cylindrical mirror, elliptical mirror, right angle prism mirror, Hot mirror, cold mirror, Flat mirror etc, many of stock size for choosing, select a coating appropriate to your application or contact us with your need wavelength and wavelength range, more choosing as following, more details please contact us directly.
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Specifications
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Substrate:H-K9L, Fused Silica, Float Glass,Borosilicate glass,Aluminum etc.
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Dimension:5-300mm upon request
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Shape: flat,round, square, wedged, cylindrical,spherical,prism,other shapes accept customized
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Dimension tolerance:+/-0.02mm, +/-0.1mm(standard)
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Surface accuracy:lambda/4
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Parallelism: 3'
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Chamfer:0.3*45degree
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AOI:0-45°upon customer demand
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CA>90%
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Coating type:metal coating, dielectric coating
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