#work

Optical Perspectives Group is excited to participate in #SPIEOpticsPhotonics convention in San Diego next week! Stop by booth #735 and say hi!

Bob Parks, will also be presenting two papers during the convention.

August 21st in the Convention Center Room 15A at 10:30am 

Using near stigmatic image symmetries to uniquely align aspheric mirrors to a focus and axis

The Point Source Microscope (PSM) is used to find five aberrations related to the symmetries of the autostigmatic image viewed when aligning aspheric mirrors to a point along an axis. These five aberrations exactly match in number the five degrees of mechanical freedom required to align the mirror to an axis and thus provide an exact solution to a unique focus and alignment to an axis. We show how the PSM is used to capture and analyze a set of images as the PSM is moved through focus using the symmetry properties of the image.

 August 24th in the Convention Center at 10:20am Room 15A

Evaluating SMR positioning with an autostigmatic microscope

In previous work we have shown that one can locate the vertex of a Spherically Mounted Retroreflector (SMR) to an accuracy of 1 μm using an autostigmatic microscope. Building upon this previous work, we show that the separation between two SMRs, statically mounted, can be determined. It is shown experimentally that the distance between two SMRs can be determines with an accuracy of approximately 1 μm with good repeatability. This holds true for different azimuthal orientations of the SMRs. We also show that this measurement with the SMRs is identical to the same measurement with statically mount spherical balls.

For more details about Bob Parks or the Point Source Microscope

https://spie.org/ExhibitorDetail?expoid=2087&exhibitorid=53831