Fresnel lens (spherical):
2019 (Φ46, outside Φ53)
Focal length: 22MM
Distance: 7M
Angle: 180 degrees
2019 (Φ46,outsideΦ53) Fresnel lens (spherical)
Fresnel lens (spherical):
2019 (Φ46, outside Φ53)
Focal length: 22MM
Distance: 7M
Angle: 180 degrees