Cutting Edge Solutions for Dome and Video Globe Presentations and Non-Flat Digital Signage
Navitar has leapfrogged the current 180 degree and 360 degree projection optics technologies with the creation of the new HemiStar fisheye lenses used for dome presentation, it allows for single projector/lens presentation solutions for multiple applications. This fish eye projection lens provides maximum projection flexibility for the installer and maximum image “snap”, contrast and brightness for the end user. HemiStar lenses may be used off axis and will still maintain focus even though there is a varying projection distance to the screen.
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HemiStar lens features:
• 6.75 mm focal length
• F# 3.05
• Compatible with a LCD or single chip DLP projector
• 95% center to edge relative illumination
• Focus range 15” to infinity
• Resolution with 1.3” XGA Projector will be 768 x 768
• Resolution with 0.95” SXGA+ will be 1050 x 1050
• 1:1 throw ratio with 1.3” format projector
• 180 degree field of view (FOV)
• On-axis or off-axis projection
Currently in Development & Prototype Stage at Navitar:
New HemiStar 180° Projection lens for use with 0.65” single chip DLP projectors and resolution of 1920x1200 WUXGA such
as the InFocus IN5534L with 7000 lumens.
New HemiStar 180° Projection lens for use with 0.67” single chip DLP projectors with a resolution of 1280x800 WXGA such
as the Panasonic PT-DW6300ULS with 6000 lumens.
Custom Lenses
Navitar offers custom optical projection solutions for use in dome and curved-screen
applications including dome presentation, immersive displays, simulation applications,
and planetariums. Our design team of optical, mechanical and electrical engineers
have years of experience and are ready to design and seamlessly integrate a custom
projection lens into your system.
Contact Navitar at 800-828-6778 for additional information and pricing on our new
HemiStar series of lenses, or for a consultation on a custom lens. |
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Navitar’s new HemiStar lens line is solving optical challenges that have existed for decades
in the projection and display industry.
For years, AV professionals have had to use multiple projector systems in order to project very wide and large images onto a nonflat surface such as a 180 degree planetarium ceiling or a 360 degree spherical display. Previously, the only achievable solultion
to hold the focus on a curved surface was to stitch together multiple images on the screen. This task was not only costly and time
consuming, but often gave imperfect results.
The ideal solution consumers sought, was to fi nd a single fisheye lens which could project a bright
and sharp image, using just one projector. Navitar recognized this need in the projection market and
designed the HemiStar series of lenses.
Meeting the Need for Sharp & Clear Immersive Dome Systems
People began to look for an immersive dome display solution as a way to visually place themselves in a 3D moving image. There was a lack of available 180 degree dome projection lens choices and these early single projector/lens models were not very bright or sharp. Typical dome size was approximately 1.5-2 meters wide and the user sat at the center point of the curved screen. The Navitar HemiStar lens is the brightest and sharpest alternative for small dome systems, offering a near diffraction limited projection lens for curved surfaces. This solution is ideal for flight simulators and virtual combat simulators.
More Efficient Planetarium Presentation Systems
The oldest functioning planetarium in the world was designed in 1774 by Dutch astronomer, Eise Eisinga who built an orrery in his house in The Netherlands. In early planetarium systems, numerous slide projectors were used to fill a large planetarium dome surface. Later slide projectors were replaced by video projectors, which enabled the number of required projectors to reduce. Today, next generation planetarium dome screen presentation systems utilize bright and sharp JVC 4k and Sony 4K projectors with custom Navitar lenses for large installations. For smaller, single projector installations used in inflatable planetariums, the HemiStar lens is a perfect choice.
Overcoming Early Video Globe and 360° Projection Limitations
Years ago, finding a workable globe projection solution for large sphere presentations, interactive touch spheres and 360 degree inflatable ball signage was near impossible. Due solely to the limitation of the projection optics, early digital video globes were extremely expensive and often not evenly in focus from top to bottom. The HemiStar lens provides a solution to this problem, offering the ability to project 360 degrees into a globe. Navitar customers are utilizing the HemiStar for globe projection for a variety of projects including special effects for theater and staging, eye-catching tradeshow exhibits, digital signage and interactive spherical displays.
Digital Signage Applications for Projection Non-Flat Surfaces
The next trend in digital signage and special effect displays is to create eye-catching, memorable images by projecting onto non-flat surfaces. To create an attention-grabbing effect, designers of digital signage are developing displays on curvy and wavy surfaces, rather than standard flat surfaces. The HemiStar is a cost-effective solution for this type of application. The HemiStar allows you to present bright and sharp images almost anywhere, including non-flat surfaces of all shapes and sizes, such a wavy surfaced wall or a life size tunnel that you can walk right through. Non-flat projection is commonly used for special displays in retail showrooms, at tradeshows, casinos, sporting arenas and science center exhibits.
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