May 28, 2019

Get better ray validation through an optomechanical system with new critical rays tool

Get better ray validation through an optomechanical system with new critical rays tool

Make more informed design decisions 

When a sequential OpticStudio design is loaded into LensMechanix, a critical set of rays is created. The design is then converted to non-sequential mode and a Source File is added. The same set of critical rays are traced through the newly converted system. This is advantageous because, since the same set of rays are traced, a true comparison can be made to ensure that the performance of the optical system has not been degraded during the conversion process. As an additional benefit, LensMechanix users can understand how critical rays are impacted when mechanical components are added, leading them to make more informed design decisions.


Identify vignetting

Tracing marginal and chief rays helps optomechanical designers identify vignetting, the clipping of rays. The tool allows engineers to set pass/fail criteria to validate if the critical rays from the sequential optical system pass through the optomechanical system, thus ensuring system performance.

Having access to the critical rays enables users to confirm that beam boundaries defined in the optical design are preserved and are not impacted by the mechanical system. The critical rays show their spatial extent through the system. A visual depiction of the critical rays, such as the chief and marginal rays as they intersect each optical surface, provide mechanical designers with information to design baffles that can reduce stray light. 

The critical rays tool lists critical rays in the system along with the start position, end-target position, and end-actual position. The pass/fail criteria is determined by the position and angle tolerance. If the end-actual position differs from the end-target position by more than the tolerance setting, then the ray is considered to have failed.

The critical rays tool will be greatly beneficial to designers in defense and aerospace industries, and those designing applications with virtual images such as HUD and AR/VR. Users requiring accurate modelling of beam boundaries for laser designs or those minimizing stray-light with mechanical components, such as baffles, will also see great value in the critical rays tool.


If you’ve already participated in a free trial of LensMechanix, contact for a trial of this latest release. 


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