Courtesy of Shanghai Optics Inc
66757c7b3a6a8e1f740d8a79 Screenshot 20240621 At 9

Case Study: Enhancing Indirect Ophthalmoscopes with Double Convex Lenses

Courtesy of Shanghai Optics Inc
66757c7b3a6a8e1f740d8a79 Screenshot 20240621 At 9

Indirect ophthalmoscopes are essential tools for eye examinations, combining a light source and an imaging system. These instruments use visible or infrared light to illuminate the eye’s fundus, capturing detailed images of its structure. By magnifying these images, doctors can better diagnose and monitor eye conditions.

Unlike direct ophthalmoscopes, indirect versions use a front lens held in front of the patient’s eye. The light reflected from the eye’s fundus passes through this front lens, forming an enlarged, inverted real image that is then processed by the imaging system.

The Role of Aspherical Lenses

The use of spherical lenses in these devices often leads to suboptimal imaging. Therefore, aspherical lenses are preferred due to their ability to correct aberrations more effectively. High-order aspherical lenses, in particular, have multiple adjustable parameters to finely tune the lens curvature, significantly enhancing image sharpness and reducing distortion.

To read the entire case study, visit Shanghai Optics' website.

Sponsored Recommendations

Optical Power Meters for Diverse Applications

April 30, 2024
Bench-top single channel to multichannel power meters, Santec has the power measurement platforms to meet your requirements.

Request a quote: Micro 3D Printed Part or microArch micro-precision 3D printers

April 11, 2024
See the results for yourself! We'll print a benchmark part so that you can assess our quality. Just send us your file and we'll get to work.

Request a Micro 3D Printed Benchmark Part: Send us your file.

April 11, 2024
See the results for yourself! We'll print a benchmark part so that you can assess our quality. Just send us your file and we'll get to work.

Request a free Micro 3D Printed sample part

April 11, 2024
The best way to understand the part quality we can achieve is by seeing it first-hand. Request a free 3D printed high-precision sample part.