Fresnel lens
- In stock with stable lead times — single units or complete sets
- Size, appearance and interaction can be adapted to the museum’s theme
- For science museums, campus science rooms, community science centers and mobile science museums
- Export packing and overseas on-site installation support
Fresnel lens/threaded lens - Science Museum exhibitions exhibition items scheme
Science Behind It
Fresnel lenses, also known as threaded lenses, are mostly thin sheets made of polyolefin materials by injection molding, and are also made of glass. One side of the lens surface is smooth, and the other side is engraved with concentric circles from small to large. Its texture is designed based on the requirements of light interference and diffraction, relative sensitivity, and reception angle.
Fresnel lens, also known as a step mirror, is a lens composed of discontinuous surfaces with a "step" shape. The "staircase" is composed of a series of concentric circular ring shaped zones, also known as annular lenses. source factory of science museum exhibits - Shanghai Inertia Automation Co., Ltd. It is suggested that when observing distant objects through a Fresnel lens, the image of the object will be inverted, while observing nearby objects will produce a magnifying effect. The flat Fresnel lens contains many convex lenses in its spiral stripes, which have the function of image magnification.
Description
The main body of the exhibits is a huge Fresnel lens, which is firmly mounted on the base. Fresnel lens is also known as threaded lens. It is equivalent to a spotlight composed of two convex lenses placed opposite each other. source factory of science museum exhibits - Shanghai Inertia Automation Co., Ltd. It has the characteristics of a magnifying glass, covered with small concentric circular stripes, which bend the light passing through the lens and produce diffraction phenomena, thus forming an enlarged image.
When the audience participates in the interaction, they directly observe the scene across from them through the lens and will find that the image observed through the mirror is locally magnified, thus understanding and intuitively feeling the imaging principle of Fresnel lens and the magic of the optical world.
How to Take Part
1. Stand in front of the lens;
2. Observe the changes in the image of the opposite scene through a Fresnel lens.
video demonstration
