Precision λ/10 N-BK7 Optical Flats – Verified, Uncoated – $15

[DrPete]

FS: Precision λ/10 N-BK7 Optical Flats – Verified, Uncoated – $15
Perfect for Alignment, Interferometry, or Laser Lab Use
Location: California, USA
Shipping: U.S. only (unless otherwise arranged)

Selling a batch of new N-BK7 optical flats, verified to λ/10 flatness using HeNe fringe testing. These are optically polished one side, uncoated, and lab-quality. Excellent for laser bench setups, wavefront checking, or building your own interferometer.
🔍 Specs:

Material: Schott N-BK7

Size: 0.63" × 0.90" × 0.2" thick

Flatness: λ/10 at 633nm (interferometrically verified)

Surface: Single-sided polished, uncoated, back surface ground flat.

Condition: New, no coating, no scratches, no chips

⚡ Ideal Uses:

Beam collimation or alignment

DIY Twyman-Green or Fizeau interferometers

Reflective wavefront testing

Mirror flatness inspection

General optical metrology

💵 Pricing:

1 for $15

2 for $25

5 for $50

10 for $80
(Free shipping in U.S. on 2+ pieces)

Over 100 units available — these came from a Precision Optical Manufacture in the United States and have been individually verified.

Thanks for looking,
Pete