Description
- This Fresnel Lens can be used on Plane Magnifier,Solar energy concentrator,flashlight lamp, Stage Lamp.
- Diameter: 42mm; Focal Length: 24/28/35/40/50/60/70/80mm for choosing; Thickness: 2mm; Magnification:3x; Light transmittance: 92%.
- Professional and practical design with beautiful appearance, easy to carry and use.
- Usually used in laboratories, schools, teachers, sample observation, eyepiece protection, etc.