Contact Problems Between Optical Lenses And
Shrink Fitter For A New Type Of Laser Microscope
With A Wide Field Of View
Author(s)
I. Nitta & A. Kanno
Abstract
We have studied contact stiffness between randomly rough surfaces. This
research led to the development of a shrink fitter consisting of a new ring-shaped
machine element to join mechanical components with different coefficients of
thermal expansion, such as a ceramic shaft and a metal cylinder. As one
application of the shrink fitter, several optical lenses were shrink-fitted in a
lens-barrel. Such a scanning lens, assembled using the shrink fitter, can focus
laser light well over a wide scanning width because the optical axes of the
several lenses in the lens-barrel compliment each other well regardless of
changes in room temperature. Thus, a laser microscope with such a scanning lens
can observe object surfaces over a relatively wide area. However, contact
pressures between the shrink fitter and the optical lenses will change the
curvature of the lenses resulting in deterioration of the scanning properties of the
scanning lens. Therefore, it is very important to calculate the contact pressures
acting on optical lenses to examine the scanning properties of the scanning lens.
In this study, we have developed a new type of laser microscope with a field of
view of 10 × 8 mm. The pixel number in the laser scanning direction of 10 mm
was 20,000 and 16,000 in the perpendicular direction of 8 mm. Thus, one field of
view of this laser microscope had 320,000,000 pixels. The observation results of
some surfaces by this laser microscope are reported.
Keywords: contact pressure, shrink fitter, laser microscope, field of view, lens.
Keywords
contact pressure, shrink fitter, laser microscope, field of view, lens.
Related Book
Other papers in this volume
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