The Estimator is a unique tool designed to allow you to input parameters of an optic and adjust tolerances to get an estimated cost of your optic. This empowers optical engineers to find the best balance of performance versus cost by adjusting the manufacturing tolerances and evaluating the effect on cost.

The Estimator is also available through the ZEMAX OpticStudio ISO Drawing. Once you are registered, you can use the same credentials to login (see Cost Estimator in the OpticStudio System Explorer).

The Estimator is limited in scope to prototype optics within the following boundary conditions:

  • Quantity 1 to 10
  • Optimax Preferred Glasses
  • Diameters from 5 to 100 mm
  • Spheres/ Plano /Aspheres
  • Surfaces of R/1 or slower
  • Standard AR and Reflective Coatings

Estimator Login

Optimax currently provides 19 antireflection coatings for the Coating Library in OpticStudio. They can be divided into four categories, which are described below. The coating designs are encrypted, but this article will help you determine which coating to select, and how to evaluate its performance.


For a comprehensive table of parameter limits for requesting Cost Estimates (on this site as well as through OpticStudio), see the table below.

The Estimator is designed to generate cost estimates with standard delivery in mind. The full scope of capabilities at Optimax is much broader. If your project requires faster delivery or more challenging requirements, please contact a sales engineer at sales@optimaxsi.comfor more information.

1Lens Quantity1-10 pieces3 quantities can be chosen for estimating
2MaterialsOptimax Preferred Glasses (in stock)If you are using OpticStudio, use the Materials Catalog OPTIMAX.AGF
3Glass ParametersPrecision quality glass is assumed in all casesTolerances for refractive index, Abbe number, and homogeneity are not considered in the Cost Estimate
4CoatingLimited to the coatings listed in the drop down menuIf using the Estimator through OpticStudio, you may select any OPTIMAX coating in the Coating Catalog
Surface Parameters
wdt_IDSurface ParametersBoundsNotes
1Surface TypesStandard (Plano, Spherical, Conic), and Even Asphere SurfacesEven asphere coefficients up to 16th order are considered
2Radius (of Curvature)10 - 1500 mmLonger and shorter radii are possible, but out of the bounds of the Estimator
3Radius (of Curvature) tolerance0.025% or 1 FR (whichever is greater) for spheres; for aspheric surfaces, Rv ± 0.1%This tolerance is intended for surfaces with finite radii.
4Surface PowerMinimum power tolerance is 1 FR.In OpticStudio, use the ISO 3/A tolerance for Plano surfaces. Optimax assumes the test wavelength is 632.8 nm.
5Surface IrregularityMust be >= 0.1 FR for planos and spheres, >= 0.5 FR for aspheresIn OpticStudio, use ISO indication 3/B (irregularity, PV, in fringes). Optimax assumes the test wavelength is 632.8 nm.
6Surface R/numberMust be >= R/1R/number = Radius of Curv/Clear Aperture. Faster surfaces can be made, but limited to R/1 for the Estimator.
7Surface Roughness/TextureMinimum surface roughness is 5 Angstroms RMS.In ISO 10110 format, Rq >= 0.0005 microns RMS
8Scratch/DigEstimates are provided for scratch dig down to 10/5ISO Grade Number (5/A) must be >= 0.063 mm. Scratch width (5/L_A'') must be 0.001 mm or greater.
Dimensions & Tolerances
wdt_IDDimensions and TolerancesBoundsNotes
1Diameter of Part5-100 mm (spheres/planos) 10-100 mm (aspheric surfaces)
2Diameter of Part, toleranceA total is calculated for -tol and +tol and it must be >= 0.010 mm.Traditionally, the +tol is 0; either method is acceptable
3Tolerance on OpeningAn Opening occurs for concave surfaces with sag faces. Tolerances on this diameter drive fabrication requirements on the surface sag where the sphere joins the flat. A warning will appear if the sag tolerance converts to < ±0.010 mm.In OpticStudio, the Opening is called the "Diameter"
4(Center) Thickness2-100 mm (2-50 mm if either surface is an asphere)Thickness may also be limited by standard glass strip thickness as supplied by manufacturer (varies with glass type).
5(Center) Thickness toleranceA total is calculated for -tol and +tol and it must be >= 0.040 mm.The thickness tolerance defines the range where power, radius, irregularity, and cosmetics must all meet specifications.
6Aspect Ratio2 to 12 (most parts) 4 to 12 (aspheres, and small parts with slow surfaces)Aspect Ratio = Part Diameter/Center Thickness; In OpticStudio, use Diameter (flat)/Thickness
7Clear ApertureMust be In ISO 10110, CA is called Effective Aperture. In OpticStudio, the part diameter is called "Diameter (flat)," and a convex Opening is called "Diameter"
8Edge Thickness1.0 mm or greater at part diameter
9Wedge (ETD)Minimum (total) ETD is 0.005 mmIn OpticStudio, enter wedge in arcminutes as 4/S on one side only. ETD is calculated from that angle and checked against 0.005 mm
10Surface DecenterFor aspheric surfaces, the surface decenter tolerance must be at least ±0.002 mm (ERO = 0.004 mm)In OpticStudio, for an asphere, enter both 4/S (tilt) and 4/L (decenter).