A coating device comprising a sample carrier, a source, shadow mask and coating driver. The source comprises a plurality of targets such as a first target and second target. The source is arranged to coat at least one sample housed in the sample carrier. The shadow mask is disposed in a line-of-sight between the sample carrier and source. The shadow mask is arranged such that the first target provides a first coating contribution. The shadow mask is further arranged such that the second target provides a second coating contribution. The second coating contribution is different to the first coating contribution. At least one of the first and second coating contributions is non-uniform in a first dimension of the sample. The coating driver is arranged to independently control the first coating contribution and second coating contribution such that a thickness gradient of the coating in the first direction is variable.

A holographic media display device with an exterior, including multiple light-emitting displays that each configured to output images, at least one semi-transparent reflector, each reflector configured to receive images from at least one of the displays, to create a hologram display proximate the reflector, control electronics configured to store image media and transmit the image media to the light-emitting displays, and exterior user controls.