Results 191 to 200 of about 659,213 (221)

Design of a relay lens with telecentricity in a holographic recording system

Applied Optics, 2009
We reveal a doubly telecentric Fourier 4f relay for a holographic recording system. These lenses are made of Zeonex and their aspherical surfaces were formed by a diamond-turning machining. The total stroke of the system is 244.69 mm, including six lenses.
Yung-Sung, Lan, Chih-Ming, Lin
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Holographic Lens Synthesis with Optical Fibers

Topical Meeting on Holography, 1986
Conventional lenses seldom have f-numbers below the value of 1.0 for well-known reasons. However, a holographic optical elements that behaves as a lense can be constructed so that its focal length is arbitrarily small relative to its aperture.
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The holographic/diffractive bifocal contact lens

International Contact Lens Clinic, 1989
Abstract Presently, practitioners are somewhat limited in the available options for correction of presbyopia with contact lenses. Neither the form of contact lens design (segmented, aspheric, or concentric) or fitting scheme (such as monovision) have high enough success to dominate the market. To meet this growing demand, a new holographic/diffractive
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Improvement of printing efficiency in holographic stereogram printing with the combination of a field lens and holographic diffuser

Applied Optics, 2018
In this paper, we use a field lens and a holographic diffuser together to improve the printing efficiency of a holographic stereogram printing system based on the effective perspective images' segmentation and mosaicking method. The light rays' regulation function of the field lens and the modulation function of the holographic diffuser are analyzed ...
Jian, Su, Xingpeng, Yan, Yingqing, Huang, Xiaoyu, Jiang, Yibei, Chen, Teng, Zhang   +5 more
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Design and fabrication of extended eye-box holographic lens using holographic printer

Digital Holography and Three-Dimensional Imaging 2019, 2019
In this paper, we propose a method to design and manufacture a holographic lens that can extend the eye-box in a near eye display. To verify the possibility, we calculated the phase profile of a holographic lens that produces multiple focal points with 5 mm intervals on the focal plane, and recorded it using a holographic wavefront printer.
Jinsoo Jeong, Jaebum Cho, Changwon Jang, Chanhyung Yoo, Byoungho Lee   +4 more
openaire   +1 more source

Development of bifocal holographic lens using a photopolymer

Imaging and Applied Optics 2018 (3D, AO, AIO, COSI, DH, IS, LACSEA, LS&C, MATH, pcAOP), 2018
A bifocal holographic lens using a photopolymer is presented in this paper. We used monochromatic light to evaluate the holographic optical element (HOE) by measuring the diffraction efficiencies of holographic gratings. The experimental results confirm that the bifocal holographic lens can focus on two different points.
Hui-Ying Wu, Chang-Won Shin, Sang-Keun Gil, Nam Kim   +3 more
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Equivalent-Lens Theory of Holographic Imaging

Journal of the Optical Society of America, 1968
A theory of holographic imaging is formulated in terms familiar from conventional optics. The effects of the curvatures and off-axis angles of the reference and read-out waves are described by equivalent thin lenses and prisms. The formation of the true-image wavefield is found to be completely analogous to the conventional imaging of the object ...
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Lens design for holographic data storage systems

SPIE Proceedings, 2005
A pair of cascade lenses, a Fourier-transform lens and an imaging lens, is the key component in a volume holographic data-storage system (HDSS) for writing in and reading out the information in holographic recording material respectively. For a high-density holographic data-storage system, performances of these lenses are critical.
Ye Wang, Changjiang Liu, Yuhong Wan, Shiquan Tao   +3 more
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Optimization Procedure For A Holographic Lens Solar Concentrator

SPIE Proceedings, 1989
The subject matter of this report is the presentation of an optimization technique developed for the design and manufacturing of a holographic lens solar concentrator. The emphasis is placed on the realization of a homogeneous diffraction efficiency distribution across the aperture of the holographic lens. The nature of the holographic process requires
C. G. Stojanoff, R. Kubitzek, St. Tropartz   +2 more
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Holographic Lens for Pilot's Head-Up Display

1974
Abstract : The report describes work on the fabrication of the full-scale holographic lens for a wide field of view (FOV) head-up display (HUD) system. The basic system parameters are a 25 degrees FOV, a 25 in. eye relief, and a 3 in. high by 5 in. wide exit pupil.
A. Graube, D. H. Close
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