Adaptive Aperture Defocused Digital Speckle Photography

Details Adaptive Aperture Defocused Digital Speckle Photography Adaptive Aperture Defocused Digital Speckle Photography

2005-06-28

arxiv.org/abs/physics/0506200v1

Physics

Optics

Submitted to Optics & Laser Technology

Scientific paper

Speckle photography can be used to monitor deformations of solid surfaces. The measuring characteristics, such as range or lateral resolution depend heavily on the optical recording and illumination set-up. This paper shows how, by the addition of two suitably perforated masks, the optical aperture of the system may vary from point to point, accordingly adapting the range and resolution to local requirements. Furthermore, by illuminating narrow areas, speckle size can be chosen independently from the optical aperture, thus lifting an important constraint on its choice. The new technique in described within the framework of digital defocused speckle photography under normal collimated illumination. Mutually limiting relations between range of measurement and spatial frequency resolution turn up both locally and when the whole surface under study is considered. They are deduced and discussed in detail.

Affiliated with

Also associated with

No associations

Rating

Adaptive Aperture Defocused Digital Speckle Photography does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with Adaptive Aperture Defocused Digital Speckle Photography, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Adaptive Aperture Defocused Digital Speckle Photography will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-434652