63.5mm Silver and VIS 0° Coated, Corner Cube Prism

Product Details Incident Light is Reflected Back to the Source Down to 3 Arcsecond Beam Deviation Useful for Surveying and Alignment Also Available Mounted TECHSPEC N-BK7 Corner Cube Retroreflectors are designed to reflect any ray or beam entering the prism face, regardless of the orientation of the prism, back onto itself. A mirror will do that only at the normal incidence. As a result, corner cube retroreflectors are useful where precision alignment is impossible or time-consuming. TECHSPEC N-BK7 Corner Cube Retroreflectors are available with the dihedral surfaces either uncoated or coated with silver. The silver coating provides a larger acceptance angle while the uncoated option, which relies on total internal reflection, provides optimum reflectivity. This coating is covered by a protective black overpaint. Please note, this protective coat increases the diameter of the corner cube retroreflector by 30-60 µm. The input face is available uncoated or coated with an antireflection coating optimized for either visible wavelengths or near infrared wavelengths, including 1064nm and 1550nm. N-BK7 Corner Cube Retroreflectors provide high-reflectance cube performance with total internal reflection. Ideal for laser alignment, metrology, and interferometry applications requiring consistent optical return paths. Compact, durable, and designed for maximum angular accuracy without the need for precise alignment. FAQ(s) What is the benefit of N-BK7 glass in this cube reflector? N-BK7 offers excellent transmission in the visible to near-infrared range and high durability, making it suitable for a wide range of environments. Do these retroreflectors require alignment? No—corner cubes automatically return beams parallel to the input, eliminating the need for precise alignment. Can these be used in laser-based applications? Yes, they are commonly used in laser interferometry, alignment systems, and metrology due to their consistent beam return path. Are AR coatings available? Yes, Edmund Optics offers both uncoated and broadband AR-coated options to enhance performance across various wavelengths. Specifications General Type: Retroreflector Note: Black Overpaint is 30-60μm Thick Physical & Mechanical Properties Diameter (mm): 63.50 +0.0/-0.1 Height (mm): 48.26 Bevel: Protective as needed Clear Aperture (%): 95 Height Tolerance (mm): ±0.25 Optical Properties Beam Deviation (arcsec): 3 Coating: S1 Silver with protective overcoat (black overpaint) & S2 VIS 0° Substrate: Many glass manufacturers offer the same material characteristics under different trade names. Learn More N-BK7 Surface Quality: 60-40 Image Orientation: Left-Handed Coating Specification: Reflective Surfaces: R abs > 97% FROM 400 – 2500nm @ 0° AOI R avg > 98% FROM 400 – 2500nm @ 0° AOI Entrance:R avg ≤0.4% @ 425 – 675nm Ray Deviation (°): 180 Wavelength Range (nm): 425 – 675 Damage Threshold, By Design: Damage threshold for optical components varies by substrate material and coating. Click here to learn more about this specification. Entrance: 0.5 J/cm 2 @ 532nm & 1064nm, 10ns Reflective Surfaces: 5 J/cm2 @532nm, 10ns Power (fringes) @ 632.8nm: 0.25 Irregularity (fringes) @ 632.8nm: 0.25 Regulatory Compliance RoHS 2015: Compliant × Reach 219: Compliant × Certificate of Conformance: View ×