Question I would like to use custom materials for my lens design. What data do I need from the glass manufacturer in order to model it like the usual glass in the "GLASS" column of the surface data spreadsheet? Synopsis How to add custom or specialized materials (glasses) to a design Solution There...
Question I created two CCL programs ("aprog" and "bprog") and placed them in separate CCL files of the same names ("aprog.ccl" and "bprog.ccl" respectively). I verified that both programs work correctly by themselves. Then I changed "aprog" to call "bprog" from within the code and I got an error...
Question Why doesn't CCL have structs? Synopsis CCL and structs Solution CCL is intended for applications programming. The data storage flexibility afforded by structs is not important to most CCL applications. CCL does allow either local or global scope, as well as real, integer, and character...
Question I am attempting to control the derivative increment of some variables during optimization. But whenever I set the derivative increment in the Variables Data Editor, I find that OSLO overrides it during optimization. How can I force OSLO to use my intended values? Synopsis Calculation of...
Question I have created a lens system that includes a Diffractive Surface described by Zernike coefficients. I note that term #32 of the Asymmetric Zernike Phase terms appears too large. Is this term calculated correctly? Synopsis Incorrect calculation of Zernike Phase term #32 Solution The...
Question I have a multi-configuration lens in OSLO and I want to save one of the configurations as a separate single-configuration OSLO file. How can I do that? Synopsis Reducing the number of configurations in a lens file Workaround You can reduce the number of configurations (zoom positions) in...
Question How do I add new lenses to my Private Lens Database? Synopsis Updating the Private Lens Database Solution In addition to the traditional " Open Lens" dialog box, it is possible to easily browse through the Public Lens Library shipped with OSLO, and even though your personal lens files...
Question I have a system with a mirror at 45 deg tilt. I invoked the tilt and bend option on the tilted mirror in order to set the remaining surfaces at the correct 90 deg orientation. However, now I want to see the effect of tilting (or decentering ) the mirror alone with respect to the other...
Question What's the difference between SCL and CCL? Synopsis SCL versus CCL Solution SCL is a subset of CCL than uses predefined variables and is compiled "on-the-fly", so it is slower and less comprehensive than CCL. However, for simple tasks that require only a few lines of code, SCL may be...
Question When I click on the autofocus button, I get a different value each time I press it. Why does it do this? Isn't there a best focus position? Synopsis Autofocus consistency Solution "When you click on the autofocus button, a mini-optimization takes place. A first derivative of the spot size...
