A method for performance characterization of multi configuration near eye displays as a device under test by an optical apparatus, the optical apparatus including a viewfinder digital camera, the method comprising: aligning an optical axis of the optical apparatus with an optical axis of the DUT to establish an optical measurement axis, wherein the aligning comprises: forming a reference image of a field-of-view measurement aperture illuminated by a lamp, wherein a first portion of a light illuminated by the lamp is reflected from a beamsplitter, collimated by a collimating lens and reflected back onto the beamsplitter, and a portion of the collimated light is captured as the reference image by the viewfinder digital camera, forming an actual image of the FOV measurement aperture by projecting a second portion of the light illuminated by the lamp from the beamsplitter onto the DUT and reflecting the second portion of the light by a mirror back onto said beamsplitter, projecting a portion of the reflected second portion light onto the viewfinder digital camera by the beamsplitter, and capturing the portion of the reflected second portion light by the viewfinder digital camera to form the actual image of the FOV measurement aperture, superimposing the reference image of the FOV measurement aperture and the actual image of the FOV measurement aperture to align the optical axis of the optical apparatus with the optical axis of the DUT to establish said optical measurement axis; collimating light reflected from the beamsplitter and reflecting it back towards an image sensor to form a virtual image of the DUT; defining a measurement area on the virtual image of the DUT and capturing an image of the defined measurement area; performing adjustments to move the captured image of the defined measurement area and a complete field of view of the view finder digital camera to establish alignment of the FOV measurement aperture to the virtual image of the DUT, wherein the captured image of the defined measurement area and the complete field of view of the viewfinder digital camera are both reflected from said beamsplitter; turning off the lamp to allow only the virtual image of the DUT to be seen by the viewfinder digital camera; moving the lamp and the beamsplitter from the optical measurement axis so that none of the light passing through FOV measurement aperture is blocked from reaching a spectroradiometer; projecting the virtual image of the DUT onto the FOV measurement aperture; focusing an image of an entrance pupil of the optical apparatus onto a spatial mixer; collecting the virtual image from the spatial mixer onto a spectroradiometer; and performing spectroradiometric measurements on the captured image of the defined measurement area by the spectroradiometer, using the collected virtual image from the spatial mixer. forming a reference image of a field-of-view measurement aperture illuminated by a lamp, wherein a first portion of a light illuminated by the lamp is reflected from a beamsplitter, collimated by a collimating lens and reflected back onto the beamsplitter, and a portion of the collimated light is captured as the reference image by the viewfinder digital camera, forming an actual image of the FOV measurement aperture by projecting a second portion of the light illuminated by the lamp from the beamsplitter onto the DUT and reflecting the second portion of the light by a mirror back onto said beamsplitter, projecting a portion of the reflected second portion light onto the viewfinder digital camera by the beamsplitter, and capturing the portion of the reflected second portion light by the viewfinder digital camera to form the actual image of the FOV measurement aperture, superimposing the reference image of the FOV measurement aperture and the actual image of the FOV measurement aperture to align the optical axis of the optical apparatus with the optical axis of the DUT to establish said optical measurement axis; collimating light reflected from the beamsplitter and reflecting it back towards an image sensor to form a virtual image of the DUT; defining a measurement area on the virtual image of the DUT and capturing an image of the defined measurement area; performing adjustments to move the captured image of the defined measurement area and a complete field of view of the view finder digital camera to establish alignment of the FOV measurement aperture to the virtual image of the DUT, wherein the captured image of the defined measurement area and the complete field of view of the viewfinder digital camera are both reflected from said beamsplitter; turning off the lamp to allow only the virtual image of the DUT to be seen by the viewfinder digital camera; moving the lamp and the beamsplitter from the optical measurement axis so that none of the light passing through FOV measurement aperture is blocked from reaching a spectroradiometer; projecting the virtual image of the DUT onto the FOV measurement aperture; focusing an image of an entrance pupil of the optical apparatus onto a spatial mixer; collecting the virtual image from the spatial mixer onto a spectroradiometer; and performing spectroradiometric measurements on the captured image of the defined measurement area by the spectroradiometer, using the collected virtual image from the spatial mixer.