Results 211 to 220 of about 4,697 (265)

Holographically sensing of volatile organic compounds using cellulose acetate-based photopolymer film. [PDF]

Sci Rep
Sharma K, Mohanta GC, Kumar R.
europepmc   +1 more source

Multi-parameter enhanced optical encryption with biphasic chiral photonic crystals. [PDF]

Light Sci Appl
Ouyang C, Chen Q, Zhang D, Xie Z, Luo D, Lu YQ, Hu W.   +6 more
europepmc   +1 more source

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Holographic optical elements

Journal of Optical Technology (A Translation of Opticheskii Zhurnal), 2007
This paper discusses the distinctive features of holographic optical elements. The principles and techniques for obtaining them are explained. The main parameters of various types of such elements are given, along with examples of using them in optical technology and instrumentation.
A V Lukin
exaly   +2 more sources

Design for polarizing holographic optical elements

Applied Optics, 1995
We present results of the application of a three-dimensional rigorous-vector coupled-wave theory to the design of polarizing holographic optical elements. Two different cases have been selected giving rise to two types of element, one of which is completely original. Experimental realizations were performed.
S, Habraken, Y, Renotte, S, Roose, E, Stijns, Y, Lion   +4 more
openaire   +3 more sources

Testing of holographic optical elements for holographic gun-sight

Optics and Lasers in Engineering, 2008
Conventional methods of measuring the various parameters of holographic optical elements are tedious for mass production. A novel approach is described for the holographic elements used in the holographic sight, in which the parameters are defined and measured as per their intended final application.
Asha Sharma, Arun K Gupta
exaly   +2 more sources

Achromatic triplet using holographic optical elements

Applied Optics, 1977
An achromatic optical system can be made using three holographic optical elements. A very simple design scheme is presented, and the properties of the system are discussed.
exaly   +3 more sources

Binocular holographic display based on the holographic optical element

Journal of the Optical Society of America A, 2022
Due to the limited pixel pitch of the spatial light modulator (SLM), the field of view (FOV) is insufficient to meet binocular observation needs. Here, an optimized controlling light method of a binocular holographic three-dimensional (3D) display system based on the holographic optical element (HOE) is proposed.
Xiujuan Qin, Xinzhu Sang, Hui Li, Chongxiu Yu, Rui Xiao, Chongli Zhong, Zhi Sun, Yu Dong, Binbin Yan   +8 more
openaire   +3 more sources

Bandwidth of holographic optical elements

Optics Letters, 1982
The diffraction efficiency, bandpass, and spurious beam rejection are studied for the holographic cascade lens that consists of a diffraction grating in contact with an off-axis zone plate. An analysis is presented for the bandpass of the volume diffraction grating, including the effects of grain polarizability.
T, Stone, N, George
openaire   +2 more sources

Stratified volume holographic optical elements

Optics Letters, 1986
Volume holographic optical elements are of considerable interest for applications in optical information processing and computing systems and in optical interconnect technology. Typical volume holographic optical elements are fabricated from bulk photosensitive materials, such that the holographic recording process occurs throughout the entire volume ...
R V, Johnson, A R, Tanguay
openaire   +2 more sources

Entropy-based study of imaging quality in holographic optical elements

Optics Letters, 1994
A method for obtaining the best image plane for holographic optical elements by the use of the concept of entropy is described. This method is applied to in-line holographic lenses with different values of spherical aberration.
L Carretero, A Beléndez, A Fimia
exaly   +2 more sources