Description
- This Fresnel Lens can be used on Plane Magnifier,solar energy concentrator, 3D VR Glasses.How to choose the correct focal length of the Fresnel lens used on the lamp
- 1.The distance from the lamp bead to the lens position is called the object distance.
- 2. The object distance is not equal to the focal length of the selected lens
- 3. The focal length is appropriate, the light output angle is the smallest, and the light output angle will increase if the focal length is larger or smaller
- 4. According to experience, generally choose the lens whose focal length is equal to or greater than the object distance for testing.
Optical Fresnel Lens Long Shot Flashlight Condenser Parallel Spot Straight Light 3D VR Glasses Magnifier,Solar Concentrator
Round PMMA Plastic Fresnel Condensing Lens
Diameter:20mm
Focal Length: 10mm 15mm 50mm
Thickness: 2mm
Thread Distance 0.3mm
Material: Optical PMMA
Transmittance: 92%
Magnification:3x