SINE Sinusoidal Single Frequency Gratings

Our SINE Sinusoidal Single Frequency transmittance patterns have proved to be very useful for specialized MTF Measurement as well as for such applications as moiré contouring. They are made on film base material with a thickness of 7 mils (0.175 mm). This material is polyester and tends to be somewhat birefringent. The harmonic modulation values are generally 2% or less. Minimum densities are approximately 0.2 and the average density is 0.30 O.D. (optical density) or 50% transmission.

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