Engineering applications of HOEs manufactured with enhanced performance DCG films.

Holographic solar energy systems: The role of optical elements

“…The most immediate application in the frame of solar energy management of volume phase reflection holograms (holographic mirrors) is the shading in buildings. Stojanoff [21] designed asymmetric reflection holograms so that they can block sunlight at certain times of day (the hologram is optimized for a certain sun angle). The spectral properties, the central wavelength that is transmitted and the bandwidth, are designed according to the geographical location and the orientation of the windows.…”

“…In this study, Stojanoff proposed the utilization of symmetrical reflection holograms arranged as venetian blinds that are mounted on the exterior surface of the building. In the same work, Stojanoff [21] also proposed holographic mirrors on curved substrate to concentrate diffracted light in chemical reactors. This investigation is specifically developed in [31].…”

A review of selected technological applications of DCG holograms

“…This task may be accomplished in two ways: a) Blue shift-material is removed to shrink the hologram; 7,17 b) red shift-material is added to swell the hologram. 17,18 The realization of HOEs operating in the UV requires the preparation of a mixture of gelatin and water soluble polymer (wsp) as a coating solution for the fabrication of the photosensitive layer. During the experiments the two polymers were mixed in several ratios, while keeping the total mass constant.…”

“…The red shift and the new bandwidths are definite functions of the concentration and of the time, as this is observed inFigure 12. For moderate concentrations and times, the bandwidths and the red shifts obtained for nearly equal time -concentration curves are symmetrical 17. The red shift and the bandwidths as function of the bath dwelling time were obtained at Holotec 18 , while the dependence of the red shift and of the corresponding bandwidths on the bath concentration that are shown on the right, were obtained by Markova and Sharlandjiev at CLOSPI 19.…”

Nanocoatings for architectural glass

“…This can be achieved using holographic thin fi lms and fl uorescent materials [96][97][98] as well as mirrors and prismatic surfaces that concentrate and redirect light. 99,100 New technologies also include light-emitting diodes (LEDs) embedded in glass laminates.…”