Hypercentric optics: A camera lens that can see behind objects

TL;DR

This video demonstrates a camera lens that can see around objects by manipulating perspective through the use of a Fournell lens and aperture control.

Transcript

today on Applied Science I'm going to show you an unusual camera lens that can actually see around objects I know it's a provocative title but you also know how much I hate clickbait ins this is just real physics so let me show you the setup so the camera lens is this huge thing here with the fernell lens in the front and we're going to be looking ... Read More

Key Insights

• 😒 The unusual camera lens uses a combination of a Fournell lens and aperture control to manipulate perspective and see around objects.
• 🧘 The position of the aperture relative to the lens and focal plane is critical in determining the perspective control.
• 🤒 Telecentric lenses have specific ranges of working distances, typically less than a meter due to optical limitations.
• 🎥 The setup showcased in the video can be replicated using a 200mm Fournell lens and a wide-angle camera lens.

Questions & Answers

Q: How does the unusual camera lens work?

The camera lens works by using a combination of a Fournell lens and aperture control. By adjusting the optics and the position of the camera, the lens can selectively allow specific rays of light to create different perspectives and images.

Q: What is the purpose of using a Fournell lens in this setup?

The Fournell lens, with its large diameter, plays a crucial role in creating the telecentric or endo centric system. It helps in down selecting the rays of light that pass through the lens, allowing for greater control over perspective and image formation.

Q: Can this unusual camera lens see around objects?

Yes, the lens has the ability to see around objects by manipulating perspective. By positioning the aperture behind the focal point of the lens, the system allows faraway objects to be imaged larger than closer objects, effectively allowing the lens to see around them.

Q: How can one replicate this unusual camera lens setup?

To replicate the setup, you will need a 200mm Fournell lens with a large diameter and a wide-angle camera lens. Position the camera lens at a telecentric point, which aligns with the light coming in from the outside. The aperture is created by positioning the camera at the end of a tube with a Fournell lens attached.

Summary & Key Takeaways

• The video showcases an unconventional camera lens that can create different perspectives and even see around objects using a Fournell lens and aperture control.

• By adjusting the optics and positioning of the camera, the lens is able to make objects appear larger when they are behind other objects.

• The lens works by selectively allowing specific rays of light through, creating different images and perspectives.