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All Products / Optics / Prisms / Retroreflection Prisms / N-BK7 Corner Cube Retroreflectors
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TECHSPEC® components are designed, specified, or manufactured by Edmund Optics. TECHSPEC® components are designed, specified, or manufactured by Edmund Optics. Learn More

7.16mm Silver and NIR II Coated, Corner Cube Prism

N-BK7 Corner Cube Retroreflectors with Black Overpaint

N-BK7 Corner Cube Retroreflectors with Black Overpaint

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Stock #12-488 3-4 days
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Quantity Selector - Use the plus and minus buttons to adjust the quantity. +
£104.55 £174.25
Qty 1-5
£104.55 £174.25
Qty 6+
£83.64 £139.40
Volume Pricing
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Prices shown are exclusive of VAT/local taxes
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Beam Deviation (arcsec):
10
Coating:
S1 Silver with protective overcoat (black overpaint) & S2 NIR II
Diameter (mm):
7.16 +0.0/-0.1
Substrate: Many glass manufacturers offer the same material characteristics under different trade names. Learn More
N-BK7
Height (mm):
6.10
Surface Quality:
60-40
Type:
Retroreflector
Bevel:
Protective bevel as needed
Clear Aperture (%):
85
Height Tolerance (mm):
±0.5
Image Orientation:
Left-Handed
Note:
Black Overpaint is 30-60µm Thick
Coating Specification:
Reflective Surfaces: Rabs > 97% FROM 400 - 2500nm @ 0° AOI
Ravg > 98% FROM 400 - 2500nm @ 0° AOI
Entrance: Rabs ≤1.5% @ 750 - 800nm, Rabs ≤1.0% @ 800 - 1550nm,Ravg ≤0.7% @ 750 - 1550nm
Ray Deviation (°):
180
Wavelength Range (nm):
750 - 1550
Damage Threshold, By Design: Damage threshold for optical components varies by substrate material and coating. Click here to learn more about this specification.
Entrance: 8 J/cm2 @ 1064nm, 10ns
Reflective Surfaces: 0.5 J/cm2 @1064nm, 10ns
Power (fringes) @ 632.8nm:
0.25
Irregularity (fringes) @ 632.8nm:
0.25

Regulatory Compliance

RoHS 2015:
Compliant
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Reach 219:
Compliant
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Certificate of Conformance:
View
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Product Family Description

  • 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.

Laser Optics

Technical Information

 
A (mm) B (mm) Stock No. Uncoated Stock No. Silver Coated Stock No. Silver and VIS 0° Coated Stock No. Silver and NIR II Coated
7.16 6.1 #65-250 #43-305 #48-605 #12-488
12.7 10.16 #43-296 #45-202 #48-606 #12-489
25.4 19.05 #43-297 #45-187 #48-607 #12-490
38.1 29.21 #43-298 #45-189 #48-608 N/A
50.8 38.1 #43-299 #45-191 #48-609 N/A
63.5 48.26 #43-300 #48-593 #48-616 N/A
76.2 57.15 #43-301 #48-594 #48-617 N/A