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Design of a compact wide-angle lens based on a folded optical path
Applied Optics
|March 17, 2026
Summary
This study introduces a compact, miniaturized wide-angle lens using a folded optical path. The design ensures high imaging quality across a wide temperature range, ideal for demanding applications.
Area of Science:
- Optics and Photonics
- Optical Engineering
- Lens Design
Background:
- Wide-angle lenses require high imaging quality and broad operating temperatures.
- Miniaturization is crucial for compact optical systems.
- Existing designs often face limitations in size, temperature stability, or field of view.
Purpose of the Study:
- To design a miniaturized wide-angle lens with a wide field of view.
- To achieve high imaging performance across a broad temperature range.
- To ensure a compact optical structure through a folded optical path.
Main Methods:
- Utilized a folded optical path for lens system design.
- Employed a five-lens configuration for optimization.
- Conducted simulations for optical performance, thermal stability, and tolerance analysis.
Main Results:
- Achieved an overall optical length of less than 8 mm.
- Obtained a field of view of 170°.
- Modulation transfer function exceeded 0.3 at Nyquist frequency across the full field.
- Maximum distortion remained below 25%.
- Stable performance was confirmed from -60°C to 85°C.
Conclusions:
- The proposed miniaturized wide-angle lens design meets requirements for size, imaging quality, and temperature range.
- Folded optical path effectively enables miniaturization.
- Design demonstrates robustness and practicality for real-world applications.
