"Features
- The R2L2S1P is Ideal to Determine the Resolution of an Optical System
- 2” × 2” Glass Substrate
- Frequencies from 1 to 18 cycles/mm
- Chrome-Plated on Glass Substrates
- Positive Resolution Test Target
Thorlabs’ R2L2S1P is a positive 2" x 2" NBS 1963A resolution test target. This target has sets of 5 horizontal and 5 vertical lines. Each set of lines is labeled with a number, which refers to the number of cycles per mm. With a maximum frequency of 18 cycles/mm, the smallest cycles are only
0.0556 mm. The R2L2S1P is made in our semiconductor device production facility in Jessup, Maryland. We use contact photolithography with a mask aligner to define the pattern on the glass substrate. Once the pattern is defined, we then chemically etch the substrates and clean them in a class 100 cleanroom. The finished device is then checked with a critical dimension (CD) tool that is calibrated to NIST-traceable standards.
Specifications
- 2” × 2” Glass Substrate
- Flatness: <50 µm
- Design: Chrome-on-Glass
- Substrate: Soda Lime Glass
- Chrome Thickness: 0.120 µm
- Substrate Thickness: 0.06” (1.5 mm)
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