Fresnel lens (spherical):
8604 (Ф35, outside Ф50)
Focal length: 18MM
Distance: 6M
Angle: 360 degrees
8604（Ф35，outsideФ50） Fresnel lens (spherical)
Fresnel lens (spherical):
8604 (Ф35, outside Ф50)
Focal length: 18MM
Distance: 6M
Angle: 360 degrees