In this research, studies were conducted on the possibility of providing thermal compensation of the information display device circuit based on a holographic waveguide when the wavelength of the radiation source ch as a result of changes in ambient temperature. A variant of implementing the waveguide structure in terms of the geometry of the diffraction gratings arrangement is proposed, its main parameters (grating period, thickness, refractive index) and the dependencies between them affecting the quality of the reproduced image are determined.
1 August 2016 in Journal of Physics: Conference Series
A combination of diffractive optical elements for monochrome information virtual indicators is described. To reduce the spectral "blurring" of image in monochrome indicators with OLED-display or LCD-display with LED backlight the possibility of using the volume reflection hologram as a spectral filter is investigated. The theoretical and experimental results show that the volume reflection hologram can be used as part of a monochrome virtual indicator containing OLED-, LCOS- or LCD-display with LED-backlight and relief-phase gratings for output of radiation from substrate to reduce the spectral "blurring" of image.
16 December 2016 in Indian Journal of Science and Technology
Objectives: This paper presents several variants of stable optical schemes of sight with Holographic Optical Element to solve a problem of changing direction of diffracted by it. Methods/Statistical Analysis: Optical scheme of holographic sight is presented where the transmission hologram together with mirror is working like the reflection one. Transmission hologram with mirror can be used to stabilize beam position for much bigger wavelength shift, than it is possible with reflection hologram. Findings: Results of calculations show that using of optical systems with a mutually inclined HOE and ADG allows reducing size of scheme with acceptable shift of image. Also it should be noted that the beneficial properties of reflection holograms can be realized using transmission holograms. Application/Improvements: Our results can be useful in devices with Holographic Optical Elements such as display systems and especially for development of holographic sight.