SUMMARY
The discussion centers on constructing a telephoto lens system for imaging a cantilever with dimensions of 450x50 microns. Two lens combinations are analyzed: Combination 1 with focal lengths f1=320mm and f2=40mm yielding a total focal length of 35.5mm and magnification (M) of 8, and Combination 2 with f1=800mm and f2=100mm resulting in a total focal length of 88.89mm, also with M=8. The importance of total focal length in relation to magnification is questioned, alongside the need for clarity on setup specifics, such as object distance and working distance calculations.
PREREQUISITES
- Understanding of lens combinations and their effects on focal length and magnification.
- Familiarity with the lensmaker's equation for calculating working distance.
- Knowledge of optical systems, particularly differences between telescopes and microscopes.
- Experience with CCD sensors and their placement in optical setups.
NEXT STEPS
- Research the lensmaker's equation and its application in calculating working distance.
- Explore the principles of optical magnification and how it relates to focal lengths in lens systems.
- Study the differences between telescope and microscope configurations for optimal imaging.
- Investigate methods for minimizing distortion in optical systems, particularly with large objective lenses.
USEFUL FOR
Optical engineers, hobbyist lens makers, and researchers involved in microscopy or imaging applications who seek to understand the intricacies of lens combinations and their impact on image quality and magnification.
