Lenses axial space ray tracing measurement

Area of Science:

• Optical Engineering
• Metrology
• Geometrical Optics

Background:

• Accurate measurement of lens axial space is critical for optical system performance.
• Existing methods may lack the precision required for complex lens assemblies.

Purpose of the Study:

• To introduce a new method, lenses axial space ray tracing measurement (ASRTM), for precise lens axial space determination.
• To validate the accuracy and effectiveness of the proposed ASRTM technique.

Main Methods:

• ASRTM utilizes geometrical optics principles and an annular laser differential confocal chromatography focusing technique (ADCFT).
• It precisely focuses on spherical surface vertices and records axial movement coordinates.
• A ray tracing facet iterative algorithm determines vertex positions, refractive indices, and radii to calculate axial space.

Main Results:

• The ASRTM method successfully measures the inner axial space of assembled lenses.
• Preliminary experiments demonstrate a relative measurement error of less than 0.02%.

Conclusions:

• The proposed ASRTM method offers a highly accurate approach for measuring lens axial space.
• This technique has significant potential for applications in precision optical manufacturing and testing.