How to Choose the Best Glasses for Your Optical Design

This article explains:
  • The limitations of traditional glass choice methods like Conrady d-D and the use of model glasses
  • How to use the Glass Substitution method for direct glass optimization
  • How to further restrict glass choice to include factors like glass availability, cost, climate resistance etc.

 

Authored By: Nam-Hyong Kim

Published On: 10月 5, 2006


Using Gaussian Quadrature to Model a Broad Wavelength Spectrum

This article describes the use of Gaussian Quadrature sampling for determining the optimal set of wavelengths to use in optimizing an optical system for performance over a broad input spectrum.                                                                                                           

Authored By: Sanjay Gangadhara

Published On: 9月 26, 2016


How to Optimize at Intermediate Surfaces

This article demonstrates how to optimize at any intermediate surface or surfaces, using the default merit function tool and the IMSF operand.
 

Authored By: Nam-Hyong Kim

Published On: 7月 17, 2006


How to Optimize for As-Built Performance

This article explains how to use the TOLR operand to perform an optimization that fully accounts for all manufacturing defects. The technique is robust and stable, and takes full advantage of Zemax' ability to run large calculations over multiple processors.
 
 

Authored By: Mark Nicholson

Published On: 9月 14, 2006


How to Use the Stock Lens Matching Tool

The Stock Lens Matching tool will swap out the lenses in a design for the nearest equivalents in the selected vendors’ catalogs, and offers the potential to make great cost savings in the finished design by eliminating the need for custom manufacture. The tool will give great results, assuming that the design can work well with stock lenses. This may sound obvious, but most stock lenses are plano-curved or equi-curved, and so exist mainly at very specific shape factors. For this reason, you should use the tool with designs with modest field angles and narrow wavelength ranges, where these shape factors are appropriate.

Authored By: Mark Nicholson

Published On: 12月 23, 2015


How to Optimize on MTF

This article explains the operation of the MTF operands, and the choice of sampling schemes and algorithms available, and gives guidance on the best way to optimize for best MTF.
 

Authored By: Mark Nicholson

Published On: 5月 7, 2007


How to Optimize Non-Sequential Optical Systems

This article gives a recommended approach to the optimization of non-sequential optical systems. The recommended methods are to use Pixel Interpolation, aggregate detector data (moment of illumination data) and the orthogonal descent optimizer. As an example, a free-form mirror is optimized to maximize the brightness of an LED from 23 Cd to >250 Cd in just a few minutes of optimization.

Authored By: Akash Arora

Published On: 7月 29, 2016


What is a Ray?

This article explains:
  • What a ray is
  • Rays and wavefronts
  • Coordinates, cosines, and propagation
  • Refraction, reflection, and diffraction
  • Amplitude. phase and optical path                         

 

Authored By: Ken Moore

Published On: 12月 2, 2015


Understanding Paraxial Ray-Tracing

This article explains:
  • What paraxial rays are
  • What parabasal rays are
  • Differences between them that can cause confusion

The article is accompanied by a ZIP archive containing the samples used and a macro. This can be downloaded from the final page of the article.

 

Authored By: Mark Nicholson

Published On: 7月 21, 2005


What is an "Effective F-Number"?

This article explains:
  • The meaning of F-Number for optical systems with non-circular stops
  • The theoretical basis for the defined effective F-Number in Zemax                               

Authored By: Ronian Siew

Published On: 12月 29, 2015


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