Fresnel lens (spherical):
001 (Ф45, outside Ф53)
Focal length: 22MM
Distance: 7M
Angle: 360 degrees
001（Ф45,outsideФ53） Fresnel lens (spherical)
Fresnel lens (spherical):
001 (Ф45, outside Ф53)
Focal length: 22MM
Distance: 7M
Angle: 360 degrees