Effect of Catadioptric Component Postposition on Lens Focal Length and Imaging Surface in a Mirror Binocular System.

Sensors (Basel)

Key Laboratory of Precision Opto-mechatronics Technology, Ministry of Education, Beihang University, Beijing 100083, China.

Published: December 2019

The binocular vision system is widely used in three-dimensional measurement, drone navigation, and many other fields. However, due to the high cost, large volume, and inconvenient operation of the two-camera system, it is difficult to meet the weight and load requirements of the UAV system. Therefore, the study of mirror binocular with single camera was carried out. Existing mirror binocular systems place the catadioptric components in front of the lens, which makes the volume of measurement system still large. In this paper, a catadioptric postposition system is designed, which places the prism behind the lens to achieve mirror binocular imaging. The influence of the post prism on the focal length and imaging surface of the optical system is analyzed. The feasibility of post-mirror binocular imaging are verified by experiments, and it is reasonable to compensate the focal length change by changing the back focal plane position. This research laid the foundation for the subsequent research on the 3D reconstruction of the novel mirror binocular system.

Download full-text PDF

Source
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6929071PMC
http://dx.doi.org/10.3390/s19235309DOI Listing

Publication Analysis

Top Keywords

mirror binocular
20
focal length
12
length imaging
8
imaging surface
8
system
8
binocular system
8
binocular imaging
8
binocular
7
mirror
5
catadioptric component
4

Similar Publications

Space-based segmented telescopes are susceptible to mirror misalignments because of temperature and mechanical perturbations in orbit. Monitoring the misalignment status of each mirror is a prerequisite to aligning the telescope promptly and maintaining image quality. In this paper, an online monitoring method based on an improved vision transformer network is proposed.

View Article and Find Full Text PDF
Article Synopsis
  • Optical aberrations in telescopes prevent them from achieving their best possible clarity, but these can be corrected using deformable mirrors guided by real-time data about the aberrations from images.
  • Current methods for detecting these aberrations depend on potentially flawed physical models, which can hinder the correction process.
  • This study proposes a new approach using model-free reinforcement learning to improve the estimation and correction of aberrations using phase diversity images, showing effective performance even under various conditions and noise levels.
View Article and Find Full Text PDF

Optical beams and starlight distorted by atmospheric turbulence can be corrected with adaptive optics systems to enable efficient coupling into single-mode fibers. Deformable mirrors, used to flatten the wavefront in astronomical telescopes, are costly, sensitive, and complex mechanical components that require careful calibration to enable high-quality imaging in astronomy, microscopy, and vision science. They are also impractical to deploy in large numbers for non-imaging applications like free-space optical communication.

View Article and Find Full Text PDF

High fidelity adaptive mirror simulations with reduced order models.

J Math Ind

September 2024

A.D.S. International, Via Pio Galli sindacalista 3, 23841 Annone di Brianza, Italy.

In the design process of large adaptive mirrors numerical simulations represent the first step to evaluate the system design compliance in terms of performance, stability and robustness. For the next generation of Extremely Large Telescopes increased system dimensions and bandwidths lead to the need of modeling not only the deformable mirror alone, but also all the system supporting structure or even the full telescope. The capability to perform the simulations with an acceptable amount of time and computational resources is highly dependent on finding appropriate methods to reduce the size of the resulting dynamic models.

View Article and Find Full Text PDF
Article Synopsis
  • Silver mirrors are commonly used in telescopes for their high sensitivity but are prone to damage from sulfurization and oxidation without protective coatings.
  • This study focused on finding dielectric materials that adhere well to silver, with various coatings applied via electron gun evaporation at low temperatures.
  • Results showed that aluminum oxide (AlO) and magnesium fluoride (MgF) had excellent adhesion to silver, and these multilayer coatings improved the reflectance of silver in the visible light spectrum.
View Article and Find Full Text PDF

Want AI Summaries of new PubMed Abstracts delivered to your In-box?

Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!