Compare Model Drawings, CAD & Specs Diameter Material Antireflection Coating Surface Flatness Surface Quality Availability Price
$103
In Stock
12.7 mm Grade A N-BK7 Uncoated λ/20 @ 632.8 nm 10-5 scratch-dig
In Stock
$144
In Stock
12.7 mm Grade A N-BK7 430-700 nm λ/20 @ 632.8 nm 10-5 scratch-dig
In Stock
$154
In Stock
12.7 mm Grade A N-BK7 1000-1550 nm λ/20 @ 632.8 nm 10-5 scratch-dig
In Stock
$140
In Stock
25.4 mm Grade A N-BK7 Uncoated λ/20 @ 632.8 nm 10-5 scratch-dig
In Stock
$175
In Stock
25.4 mm Grade A N-BK7 430-700 nm λ/20 @ 632.8 nm 10-5 scratch-dig
In Stock
$191
In Stock
25.4 mm Grade A N-BK7 650-1000 nm λ/20 @ 632.8 nm 10-5 scratch-dig
In Stock
$191
In Stock
25.4 mm Grade A N-BK7 1000-1550 nm λ/20 @ 632.8 nm 10-5 scratch-dig
In Stock
$230
In Stock
50.8 mm Grade A N-BK7 Uncoated λ/20 @ 632.8 nm 10-5 scratch-dig
In Stock
$293
In Stock
50.8 mm Grade A N-BK7 430-700 nm λ/20 @ 632.8 nm 10-5 scratch-dig
In Stock
$323
In Stock
50.8 mm Grade A N-BK7 650-1000 nm λ/10 @ 632.8 nm 10-5 scratch-dig
In Stock
$335
In Stock
50.8 mm Grade A N-BK7 1000-1550 nm λ/20 @ 632.8 nm 10-5 scratch-dig
In Stock

Features

High Precision Manufacturing

These N-BK7 parallel windows are manufactured to the highest precision with flatness better than λ/20 for low distortion and < 30 arc second parallelism for exceptionally low beam deviation.

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.

Broadband Visible Antireflection Coatings

Our AR.14 broadband multilayer antireflection coating markedly improves the transmission efficiency of these lenses by reducing surface reflections over a 430-700 nm wavelength range. This AR coating performs effectively for multiple visible wavelengths and tunable lasers eliminating the need for several sets of optics.

Broadband Multilayer NIR Antireflection Coating

Our AR.16 coating is recommended for NIR applications in the 650-1000 nm range.

Broadband Multilayer IR Antireflection Coating

Our AR.18 coating is for IR applications in the 1000-1550 nm range.

RoHS Compliant

These windows 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.