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Bessel beam alignment of a single, partially constrained lens element
ABSTRACT In many lens assemblies, mounting constraints prevent independent adjustment of tilt and decenter making perfect alignment of individual elements impossible. This work models a plano-convex lens to compare several centering methods under partial constraint, including mechanical edge runout, image runout, center of curvature centration, and transmitted Bessel beam deviation. Although based on a single […]
The Point Source Microscope, a unique autocollimator
ABSTRACT The Point Source Microscope (PSM) utilizes infinite conjugate optics internally. When the microscope objective is removed, the PSM is an autocollimator. Unlike conventional autocollimators, which use a reticle pattern for illumination, the PSM employs a single-mode fiber. The PSM camera captures a well-focused, circular return reflection when a perfect plane mirror is aligned perpendicular […]
Chapter 2 Radius measurement – the original use of an autostigmatic microscope
After finishing Chapter 1, I was going to jump right into discussing using the PSM for opticalalignment. As I started an outline for this Chapter, one of the entries was locating the center ofcurvature, and this led to radius of curvature which made me think that it would be best toexplain the origin of the […]
Recent Posts
- Bessel beam alignment of a single, partially constrained lens element
- Understanding Opto-Mechanical Alignment in Optical System Design
- Choosing Between Portable and Lab-Based Optical Metrology Systems
- Choosing Between Interferometers and PSMs for Your Optical Lab
- The Point Source Microscope, a unique autocollimator