Compare Model Drawings, CAD & Specs Wavelength Range Size Material Coating Type Coating Code Availability Price
$83
In Stock
12.7 mm N-BK7 Uncoated
In Stock
$165
In Stock
430-700 nm 12.7 mm N-BK7 Visible Multilayer AR.14
In Stock
$199
In Stock
650-1000 nm 12.7 mm N-BK7 NIR Multilayer AR.16
In Stock
$199
In Stock
1000-1550 nm 12.7 mm N-BK7 IR Multilayer AR.18
In Stock
$232
In Stock
1064 nm 12.7 mm N-BK7 V-Coat Multilayer AR.33
In Stock
$130
In Stock
25.4 mm N-BK7 Uncoated
In Stock
$230
In Stock
430-700 nm 25.4 mm N-BK7 Visible Multilayer AR.14
In Stock
$257
In Stock
650-1000 nm 25.4 mm N-BK7 NIR Multilayer AR.16
In Stock
$257
In Stock
1000-1550 nm 25.4 mm N-BK7 IR Multilayer AR.18
In Stock
$307
In Stock
1064 nm 25.4 mm N-BK7 V-Coat Multilayer AR.33
In Stock

Features

Total Internal Reflection

By means of total internal reflection (TIR), a right-angle prism may be used as a 90° reflector or as a 180° retroreflector. Except for reflection losses from the entry and exit faces, TIR exhibits 100% reflectivity over a very broad wavelength range. The reflecting surface should be coated with protected aluminum if the incidence angle exceeds that acceptable for TIR or if the environment does not allow the reflecting surface to be kept clean, as TIR requires. The hypotenuse can also be used as a first surface reflector. In this case, the overcoat of black paint should be removed with acetone.

N-BK7 for VIS and NIR Applications

N-BK7 is an excellent lens material for most visible and near infrared applications. It is the most common borosilicate crown optical glass, and it provides great performance at a good value. Its high homogeneity, low bubble and inclusion content, and straightforward manufacturability make it a good choice for transmissive optics.

High Quality Precision Prism Surfaces

Our precision prisms are polished to tight tolerances minimizing wavefront distortion. Tight surface quality tolerances minimize scatter and unwanted diffraction effects. These right angle prisms have a 20-10 scratch-dig surface quality, and a λ/4 surface flatness.

Broadband Multilayer IR Antireflection Coatings

We offer two multilayer AR coatings options for IR and NIR applications. Our AR.16 coating is recommended for NIR applications in the 650-1000 nm range. Our AR.18 coating is for IR applications in the 1000-1550 nm range.

1064 nm Laser Line Antireflection V-Coating

Our AR.33 laser line V-coating offers the lowest reflectance at 1064 nm for maximum transmission while maintaining high durability and high damage resistance. Valuable laser energy is efficiently transmitted through the plano-convex lens rather than lost to surface reflection and scattering. The trade off to its superior performance is the minimal laser line wavelength range.

RoHS Compliant

These prisms have been tested for dangerous substances like Pb, Cd, Hg, Hex-Cr, PBB, and PBDE and have been found to be in compliance with RoHS allowable levels.