Fisheye lens for planetarium - EMERALD™ Planetariums Dome OPTICS

Discover your place in the universe with superior optics and more

from the world’s #1 planetarium maker

SEE THE UNIVERSE IN HD

Emerald™ planetariums optical systems designed to produce aberration-free images with pinpoint stars all the way to the edge of the field of view.

Included with our central & cove mounted projection systems, within the FIXED & LITE series.

Emerald™ optics virtually eliminates off-axis star coma, provide an exceptional-quality system at a fraction of the price of competitors.

A DIFFERENCE YOU CAN SEE

Compare the two images of a star field below.
The first was taken with Emerald™ Dome Lenses optics, the second with a competing optical design.
Superior edge performance not only creates rounder, more pleasing stars, but actually improves the resolution and audience experience. With Emerald™ MgF2 optical coatings, our optics gives you maximum light throughput across the widest visual spectrum.

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Fig. 1: Emerald™ Dome Lenses optics produces a consistent, sharp focus across the entire FOV

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Fig. 2: The competing design, when focused on the axis, shows sharp stars in the center of the image, but dramatically out-of-focus stars (rings or lines) at the edges.

*Both images were taken with the same projector specifications under the same conditions

When focused on-axis, both images appear to be sharp in the center. But in the 2nd image - as you examine the stars closer and closer to the edge, the stars become larger and less focused. Finally, at the very corners, the stars are so defocused that they appear smeared instead of pinpoints.

Now look at the 1st image - as you move from the center outward, the stars retain their focus from edge to edge, appearing as crisp, solid points of light.

IMPROVED PERFORMANCE FOR BRIGHTER, MORE DETAILED IMAGES

Superior edge performance not only creates rounder, more pleasing stars, but actually improves the resolution and limiting magnitude compared to projection units of equal initial properties/specs.

Emerald™'s high definition optics let you resolve smaller spot sizes all the way to the outer edge, revealing finer detail and greater contrast. Our high-performance lens system employs sophisticated optical design to deliver true-to-life images.

This innovative optical lens eliminates most image distortions, achieving optimal image clarity suitable for demanding applications.

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Emerald™'s lenses are made from the highest-grade all-glass substrates, with metal barrel and CNC framework. The lens system comes with greater light penetration that guarantees long-lasting intensity, breathtaking clarity, sharpness, and color performance across the entire dome.

Dome Optics for the Best Color Performance and Picture Quality

Our low dispersion lenses minimize chromatic aberration via a customized optical parameter and ultra-low reflective coating that prevent shape distortion while safeguarding perfect projection quality. The result is superbly delicate image quality that guarantees the best viewing experience.