A dual dispersion stitching method is proposed to extend the measuring range of chromatic confocal sensor without reducing the axial resolution. A novel chromatic confocal sensor with dual dispersion is presented and introduced. An X-shaped fiber coupler is employed to divide the light from light source into two beams. These two beams are used to generate two sets of staggered dispersion which extend the measuring range of chromatic confocal sensor. A dual-dispersive objective is designed with Zemax software for verifying the proposed method. The result indicates that the length of total dispersion is extended to 209.6 μm, which is 1.75 times the length of single dispersion. The coefficient of determination between the axial dispersion and wavelength is close to 1.0000.
Access to the requested content is limited to institutions that have purchased or subscribe to SPIE eBooks.
You are receiving this notice because your organization may not have SPIE eBooks access.*
*Shibboleth/Open Athens users─please
sign in
to access your institution's subscriptions.
To obtain this item, you may purchase the complete book in print or electronic format on
SPIE.org.
INSTITUTIONAL Select your institution to access the SPIE Digital Library.
PERSONAL Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.