Comparison of various OHMDs technologies




Combiner technology Size Eye box FOV Other Example
Flat combiner 45 degrees Thick Medium Medium Traditional design Vuzix, Google Glass
Curved combiner Thick Large Large Classical bug-eye design Many products (see through and occlusion)
Phase conjugate material Thick Medium Medium Very bulky OdaLab
Buried Fresnel combiner Thin Large Medium Parasitic diffraction effects The Technology Partnership (TTP)
Cascaded prism/mirror combiner Variable Medium to Large Medium Louver effects Lumus, Optinvent
Free form TIR combiner Medium Large Medium Bulky glass combiner Canon, Verizon & Kopin (see through and occlusion)
Diffractive combiner with EPE Very thin Very large Medium Haze effects, parasitic effects, difficult to replicate Nokia / Vuzix
Holographic waveguide combiner Very thin Medium to Large in H Medium Requires volume holographic materials Sony
Holographic light guide combiner Medium Small in V Medium Requires volume holographic materials Konica Minolta
Combo diffuser/contact lens Thin (glasses) Very large Very large Requires contact lens + glasses Innovega & EPFL
Tapered opaque light guide Medium Small Small Image can be relocated Olympus

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