ISO 10110 SCRATCH DIG HOW TO
ISO 10110 SCRATCH DIG ISO

We do have over 16,000 substrate holders available and can work with nearly all sizes. If the coating has to be rimless, small defects caused by the clamp holder and overspray can occur on the sides of the substrates.If not described otherwise we use holders with rims (normally covering about 2% of the diameter, minimum 0.5 mm) which will remain uncoated.LASEROPTIK has decades of experiences in coating on all kind of substrates and a large data base, but we gratefully accept any additional information about the characteristics of your substrates.įor choosing the correct substrate size it might be useful to think about the possible aperture and about the holders used for the coating process: maximum temperature we can use while coating.crystals) we additionally need to know the following properties:

ISO 10110 SCRATCH DIG ISO

A comparison between MIL and DIN ISO is very difficult and reveals that the DIN ISO 10110 provides finer levels for decisions.įor the standard surface quality of our substrates we can give you the following values:įor special customer-owned substrates (e.g. For more information please see the complete text of DIN ISO 10110.Īnother way to specify substrates is to use the MIL-norms. The above explanations of DIN ISO 10110 are simplified.

compare with the additional information given for 3/A (B/C).

where A is the maximum permissible sagitta deviation (single pass), B is the maximum permissible irregularity (single pass) and C is the permissible rotationally invariant irregularity (single pass), e.g.

Wavefront deformation tolerance (DIN ISO 10110-14)

More information regarding the LIDT click here.

Laser irradiation damage threshold (DIN ISO 10110-17)

please see DIN ISO 14997 for more detailed information.

a possible complete nomenclature would be 5/3 x 0.025 C3 x 0.025 L1 x 0.001 E 0.2.

other codes represent additional errors: C stands for coating imperfections, L for scratches with any length and E for chips.

where N is the number of allowed surface imperfections with maximum size A, e.g.

Surface imperfection tolerances (DIN ISO 10110-7)

where σ denotes the maximum permissible wedge angle by spherical surfaces, e.g.

Please note that the achievable flatness strongly depends on the diameter-thickness-ratio of the substrate.ģ/0.1 (0.1) 3/0.2 (0.2) 3/0.5 (0.5) 3/1 (1) 3/2 (2)

please see DIN ISO 14999 for more detailed information.Ĭommonly the surface form tolerance is stated as flatness and can be roughly converted into values of the measuring wavelength λ, as shown in the following table.

where A is the maximum permissible power deviation (≈ peak to valley (PV) of the best-fit-sphere), B is the maximum permissible PV of the resulting surface after subtracting the best-fit-sphere (= irregularity) and C is the maximum permissible PV of the best fit asphericity of the irregularity (= rotationally invariant irregularity).

Surface form tolerances (DIN ISO 10110-5)

where A denotes the inhomogeneity class and B denotes the striae class, e.g.

Material imperfections: Inhomogeneity and striae (DIN ISO 10110-4)

where N is the number of bubbles and inclusions with a maximum allowable size A, e.g.

Material imperfections: Bubbles and inclusions (DIN ISO 10110-3)

where A is the maximum allowable stress birefringence in nanometers per centimeter of optical path length, e.g.

Material imperfections: Stress birefringence (DIN ISO 10110-2)

ISO 10110 SCRATCH DIG HOW TO

Here you can find a description of how to specify substrates according to DIN ISO 10110:

Nevertheless some applications require more precise specifications. It is common to accept tolerances for substrate size but also for variations of surface form and surface imperfections. You can of course use super polished optics for a standard mirror, but that might be a waste of money.

For example low loss mirrors need to have substrate surfaces with a low micro-roughness.

Please note: the quality of the substrate has to be chosen with the specifications of the coating in mind. If we do not get any other information we will choose standard quality properties and standard tolerances.

for curved surfaces: radii of curvature.

LASEROPTIK has a wide selection of sizes and materials in stock but can also provide nearly every custom optic manufactured to your individual needs.įor a quotation we need to know at least the following information:

Iso 10110 scratch dig