N-BK7 Corner Cube Retroreflectors

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.

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