Forum Discussion
What is the angular resolution of the DK2?
I've seen people say anywhere from just under 8 to 9 pixels/degree, and that it is a mostly uniform angular resolution across the FOV. Where does this number come from? If I try to calculate it t...
"Fredz" wrote:
No, 10X is just a speculation considering the size of the screen and the expected FOV. Oculus VR has never advertised the magnification of the lenses.
If you take the 8-9 pixels/degree that you get doing it that way, their lens can't be magnifying it more than ~2x if the angular resolution is about constant across the field of view. Without a lens at all the AR should be ~13.54 pixels/degree at 2" away with a 51 degree FOV. That makes sense as adding the lense increases the FOV by ~1.75 and the angular size of each pixel by ~1.5-1.7. It probably isn't exactly constant across FOV, but relatively close.
"Fredz" wrote:
It doesn't work like that. To calculate the FOV correctly you need to know the surface profile of the lenses - not only the magnification - and you need to use ray-tracing with the correct equations for aspheric surfaces taking into account the refractive index of the lens.
I'm mostly interested in knowing if the angular resolution actually is constant across FOV.