Electron-optical bench

Thermal Motion of the Stis Optical Bench

Various tests have been done of the STIS using internal wavecals to measure thermal motion of the spectral format on the detectors. In most cases, the spectral format moves less than the speci cation not to exceed 0.2 pixels per hour. Primary causes of the motion are 1) changes to the thermal design dictated by the warmer Aft Shroud environment and 2) on-orbit power cycling of MAMA electronics ...

Optical and Electron Microscopy

Improving optical bench radius measurements using stage error motion data.

We describe the application of a vector-based radius approach to optical bench radius measurements in the presence of imperfect stage motions. In this approach, the radius is defined using a vector equation and homogeneous transformation matrix formulism. This is in contrast to the typical technique, where the displacement between the confocal and cat's eye null positions alone is used to deter...

Optical diagnostic and biophotonic methods from bench to bedside.

The sixth Inter-Institute Workshop on Optical Imaging from Bench to Bedside was held at the National Institutes of Health (NIH) in Bethesda, Maryland, in October 2009. The broad impact of biophotonics on biomedical research was exemplified by the generous support that was provided by several diverse institutes and centers within NIH. These included the National Heart, Lung, and Blood Institute ...

Microactuated Micro-xyz Stages for Free-space Micro-optical Bench

A novel microactuated micro-XYZ stage with large travel distance and fine positioning capability has been demonstrated using the surface-micromachming technology. The micro-XYZ stage consists of three inplane translation stages driven by integrated scratch drive actuators. Two vertically stacked 45" micromirrors in orthogonal directions are employed to achieve vertical beam adjustment without u...