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Hello,
I have a small project in which I try to use a Time of Flight camera to detect movement in the Field of View.
Now the current Field of View is really narrow (about 25° diagonal FoV), which is we I will have to simulate a bigger one.
My professor did try to explain to me what changes, but to be honest I could not follow his explanation, since I'm a real beginner when it comes to optics. Now that I did some research on the theme I have a lot of questions regarding the theme, but could not find any suitable explanation yet, so here I am :)
So what I do understand is that a Time of Flight camera emits light with a transmitter and has an receiver, which measures the time of flight of the transmitted photons to get distance measurements.
Now to things I am not sure about.
If I would like to have a bigger FoV. Do I need to use a lens on both the receiver and the transmitter or only the receiver?
What properties change when I use a different lens in my system(luminous flux, power consumption)?
Is there a way to calculate how these properties would change?
and my final question is to the brief introduction that my professor gave me, where I made a picture of a formula which I did not really understand(I appended it as a picture). I know that the formulas are about two different lenses, with different FoV. But what exactly is calculated there? If it is the observed surface area of the different FoVs, shouldn't it be ## \varphi \propto (d * tan(\frac{\alpha}{2})*2)^2 ##, when d is the distance to the object and ## \alpha ## is the Field of View
I know those are a lot of questions. But I hope someone can try to help me understand the theme a bit more.
Thanks in advance
I have a small project in which I try to use a Time of Flight camera to detect movement in the Field of View.
Now the current Field of View is really narrow (about 25° diagonal FoV), which is we I will have to simulate a bigger one.
My professor did try to explain to me what changes, but to be honest I could not follow his explanation, since I'm a real beginner when it comes to optics. Now that I did some research on the theme I have a lot of questions regarding the theme, but could not find any suitable explanation yet, so here I am :)
So what I do understand is that a Time of Flight camera emits light with a transmitter and has an receiver, which measures the time of flight of the transmitted photons to get distance measurements.
Now to things I am not sure about.
If I would like to have a bigger FoV. Do I need to use a lens on both the receiver and the transmitter or only the receiver?
What properties change when I use a different lens in my system(luminous flux, power consumption)?
Is there a way to calculate how these properties would change?
and my final question is to the brief introduction that my professor gave me, where I made a picture of a formula which I did not really understand(I appended it as a picture). I know that the formulas are about two different lenses, with different FoV. But what exactly is calculated there? If it is the observed surface area of the different FoVs, shouldn't it be ## \varphi \propto (d * tan(\frac{\alpha}{2})*2)^2 ##, when d is the distance to the object and ## \alpha ## is the Field of View
I know those are a lot of questions. But I hope someone can try to help me understand the theme a bit more.
Thanks in advance
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