DIOPTIC DTS Diffractive Transmission Sphere

For the inspection of large convex spheres, a transmission sphere with the right F-number is occasionally not available. In this case, DIOPTIC can calculate a suitable DTS for you, produce it and deliver it. In doing so, they can achieve a wavefront measuring accuracy of <10 nm rms or <lambda/10 PV.

Ultra precision for optical high-end measurements. Benefits of DIOPTIC diffractive transmission spheres versus common refractive lenses

• Focal width or f number can be selected specific to each client
• Larger available measuring diameter for convex surfaces, as a specifically adjusted object wave is created directly behind the diffractive optics
• For the inspection of concave surfaces, there is lower disturbance due to shortened measuring distances when using the diverging order of diffraction
• Additional auxiliary holograms to facilitate the alignment and measurement of the radii, with a relative precision of up to 50 ppm<