ReBeam dome lens 175° for 0.76" 3LCD

This Fulldome Lens has been developed for compatible projectors featuring 0.76" 3LCD technology. The telecentric fixed-focus optical design features a 3.5 mm focal length, an F2.2 aperture and manual focus, enabling Fulldome projection with a maximum vertical projection angle of 175°. Designed for professional dome applications, the lens provides uniform image projection across complete dome environments. The focus range extends from 600 mm to infinity.

Fulldome projection for professional applications

The lens has been developed for projection onto complete dome structures. When used with compatible projectors featuring 0.76" 3LCD technology, it achieves a maximum vertical projection angle of 175°. The lens is suitable for planetariums, science centres, museums and other immersive visualisation environments featuring dome-shaped projection surfaces.

Optical design and image performance

The lens features a focal length of 3.5 mm and an aperture of F2.2. The image circle is specified at 10.8 mm and optimized for 0.8" panels. MTF performance is rated at 66% in the center and 60% at the edge at 67 lp/mm, supporting consistent detail reproduction across the image. Lateral chromatic aberration is specified at less than 4 µm (R-G) and less than 2 µm (B-G). F-theta distortion is specified at a maximum of -1%.

Compatibility

This version has been developed for compatible projectors using 0.76" 3LCD technology. Due to the projector's panel size, the lens achieves a maximum vertical projection angle of 175°. Compatibility should be verified with the intended projector model before installation.

Robust construction

The lens features a metal-and-glass construction with maximum dimensions of 122 x 285 mm. Its durable mechanical design has been developed for continuous operation in professional Fulldome projection systems.

Installation considerations

The dome lens is designed for specialized projection on curved surfaces. Due to the extreme projection angle, precise alignment and projector-specific calibration and warping are required to achieve correct image geometry.