Generating reference on the back focal plane (BFP) of objective lens has been an excellent solution for numerical aperture (NA) measurement. Although the effectiveness of the concept of BFP reference has been verified theoretically and experimentally, there has been no practical apertometer based on this concept. The main challenge is how to realize the assembly of the system. In this work, we present the instrument assembly of the apertometer based on BFP reference, which mainly has three requirements. After that, we specifically investigate the influence of the location of the coverslip on BFP image and NA value by using ZEMAX. This work promotes the instrumentation of BFP-typed apertometer significantly.
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.