I Can an Aspheric Lens Narrow the FOV for Motion Detection Systems?

  • I
  • Thread starter Thread starter Tone L
  • Start date Start date
  • Tags Tags
    Optics Sensors
AI Thread Summary
An aspheric lens can potentially narrow the field of view (FOV) for motion detection systems, but specific dimensions and design considerations are crucial. Users are exploring alternatives like blocking pieces to achieve a narrower FOV, suggesting practical solutions beyond just lens selection. The discussion emphasizes the need for more details, such as dimensions and sketches, to provide tailored advice. The challenge lies in finding a suitable lens that meets the desired specifications of around 20 degrees FOV. Overall, the conversation centers on optimizing lens choice and design for effective motion detection.
Tone L
Messages
72
Reaction score
7
TL;DR Summary
Curious if fresnel lenses are needed for motion detection.
I want to build a motion detection system, however I want to narrow field of view. I cannot find a Fresnel lens with a narrower FOV than 30 degrees. Was looking for something around 20 degrees.

Can I use an aspheric lens to achieve this, does anyone know?
 
Science news on Phys.org
You just want to narrow your FOV with a pre-lens? What dimensions? Can you not just use some blocking pieces to narrow the FOV? More details and a sketch would be helpful. Thanks.
 

Thread 'Pentaprism with magnification, which surface is curved?'

I would like to use a pentaprism with some amount of magnification. The pentaprism will be used to reflect a real image at 90 degrees angle but I also want the reflected image to appear larger. The distance between the prism and the real image is about 70cm. The pentaprism has two reflecting sides (surfaces) with mirrored coating and two refracting sides. I understand that one of the four sides needs to be curved (spherical curvature) to achieve the magnification effect. But which of the...
View full post »

Similar threads

I Digital Micromirror Device based optical setup
Replies
7
Views
1K
I How to couple light from a very small source into spectrometer?
Replies
10
Views
1K
I How Can I Build an Effective DIY Helmet-Mounted HUD?
Replies
19
Views
4K
Simulate other lenses with Time of Flight (ToF) camera
Replies
22
Views
4K
How determine aspheric lens beam angle?
Replies
5
Views
4K
I Help Needed for Lens Selection for Fiber optics
Replies
1
Views
2K
Ideal optical collimation system
Replies
2
Views
3K
How can I create an adjustable liquid lens system for windows?
Replies
18
Views
3K
Can better sensors extract unlimited info from old lens?
Replies
13
Views
4K
Optical design of surgical loupes
Replies
5
Views
7K

Hot Threads

Recent Insights

Back
Top