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How the Eye Works

An adjustable lens projects a real image onto a retina screen.

How the Eye Works — Life Science & Health exhibit for science museums
Studio rendering
CategoryLife Science & Health
TopicHuman body
Standard size1900 x 1900 x 1100 mm
SupplySingle unit or batch · OEM to your drawing
Lead timeStandard 4–8 weeks after deposit (confirmed per contract)
Warranty1 year, structure and control
DocumentsSpecification sheet · control diagram · spare-part list

A standard catalogue model: the dimensions, control package and finish are fixed, which is what keeps the price and the lead time predictable. Size, colour and interface language can be adapted without a new design cycle.

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Standard models from this range are also listed in our online store, priced in USD — see the price yourself ↗

01 / Overview

Demonstrate the imaging principle of the human eye.

02 / How visitors use it

The unit is designed for unsupervised public use: controls are recessed or shielded, moving parts are enclosed, and the interface is operable by a child of about six with no instruction. Where a screen is used, the language can be switched without changing the hardware, and the content can be replaced on site.

03 / The science behind it

A person forms an inverted and reduced real image on the retina, while vision is upright, which is a characteristic of human vision. Please note that it is not the same size as Zhengli. Visual imaging is the reflection of light from an object through the lens and refracted onto the retina. Then it is transmitted to the brain by the visual nerve perception, so that people can see objects.

04 / Built for a public floor

Every unit leaves the factory after a running test: mechanisms cycled, electronics burned in, edges dressed, fixings torqued and marked. Wear parts — bearings, sliders, lamps, belts, touch panels — are modular and listed on the spare-part sheet, so a venue technician can replace them without returning the exhibit. Crating is plywood with foam blocking; the loading plan and packing list travel with the shipment.

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