A spinning LED blade, not a hologram, is what HYPERVSN sells

What you see

A HYPERVSN unit shows a small three-dimensional-looking image — a rotating product, logo, or short animation — that appears to float above the device, visible without glasses or a headset. According to the company's own homepage, the product is "a four-ray rotor display that shows 3D content which appears to float in midair," and the site brands the visible result a "3D Holographic Experience." The image is small, sized to the spinning assembly rather than filling a room, and meant for passersby in a retail, event, or lobby setting rather than a single seated viewer.

How it works

HYPERVSN's own technology page states the unit is "a four-ray LED-based display" whose blades "rotate faster than the eye can see, leaving only the stunning 3D holographic content floating in midair." That describes a persistence-of-vision display: LEDs on rotating arms switch on and off at points around a circle, and the eye merges the rapid sequence of lit points into an apparent continuous image, the same principle used in spinning-LED clocks and fans that spell out text. The page also lists an "ultra-fine pixel pitch" and lets several units combine into a larger image. Nothing cited describes recording or reconstructing a light wavefront, the defining mechanism of an interference hologram.

Viewing conditions and limits

Because the image comes from physically rotating LEDs, it exists only within the swept volume of the blades, and its size is fixed by that assembly's size. The cited pages call the display visible "in midair" without stating a maximum viewing angle, an ambient-light tolerance, or how many people can see it at once; those are gaps in the company's own material, not claims this entry can confirm or deny. What is confirmed is that no glasses, headset, or app are needed, and that HYPERVSN markets the unit for retail windows and trade-show booths.

What it is not

A HYPERVSN display is not a hologram in the optical-interference sense used elsewhere in this archive — the sense in which a laser records the interference pattern between an object beam and a reference beam onto film, so the developed plate later reconstructs a full light wavefront with continuous parallax. HYPERVSN's own description names a mechanically rotating LED array exploiting persistence of vision, closer to a spinning-fan display than to holography; the resemblance is visual, an apparent floating image, rather than physical. The company's use of "holographic" names the perceived effect, not the recording method a physicist would require before calling something a hologram.

• Does the display require a physically rotating blade assembly, and how large is the image compared with the housing?
• What is the widest angle from which the image stays visible before it disappears or distorts?
• Can the same image be seen by two people standing on opposite sides of the unit at once?

None of this makes a HYPERVSN unit a lesser display for its intended retail and event use; it means the "hologram" in its marketing names a floating-image effect produced by a spinning LED fan, not a recorded light field.