Patent
Diffractive optical element
Hiroyuki Ishii
- 18 Jan 2000
105
TL;DR: A diffractive optical element has a plurality of step-like patterns each having surface levels of a number less than eight, the steplike patterns being disposed in combination to provide a function of a steplike structure of eight or more levels.
read more
Abstract: A diffractive optical element has a plurality of step-like patterns each having surface levels of a number less than eight, the step-like patterns being disposed in combination to provide a function of a step-like structure of eight or more levels.
read more
Chat with Paper
AI Agents for this Paper
Find similar papers on Google Scholar, PubMed and Arxiv
Write a critical review of this paper
Analyze citations of this paper to find unaddressed research gaps
Citations
Patent
Diffractive optical element and method for manufacturing the same, and imaging apparatus using the diffractive optical element
Tsuguhiro Korenaga,Masaaki Suzuki +1 more
- 24 Aug 2006
TL;DR: In this paper, an easily formable diffractive optical element, an imaging apparatus, and a method for manufacturing the Diffractive Optical Elements (DOME) were provided. But the authors did not specify a manufacturing method for the DOME.
76
Patent
Lens optical system
Shigeto Ohmori,Yuichiro Ori +1 more
- 30 Nov 1999
TL;DR: In this paper, a lens optical system is provided with a cemented lens element formed by cementing two constituent lens elements made of different optical materials together, with a diffractive optical surface formed at the cementing interface between the two component lens elements.
70
Patent
Composite material and optical component using the same
Yuka Okada,Tsuguhiro Korenaga,Masaaki Suzuki,Norihisa Takahara +3 more
- 04 Sep 2006
TL;DR: In this article, a composite material consisting of a resin and inorganic particles has been proposed, which has a good balance between high refractive index and low wavelength dispersibility and has excellent moldability.
61
Patent
Optical element, optical functional device, polarization conversion device, image display apparatus, and image display system
Hikaru Hoshi
- 24 Dec 2002
TL;DR: In this paper, the phase difference of a desired phase difference can be obtained at least at two wavelengths in a used wavelength region, in which periodic directions of a plurality of structures are perpendicular to each other, and in which the difference in refractive index between individual structures for a predetermined polarization component is set to a predetermined value or less.
58
Patent
Diffraction element and optical head device
Hiromasa Asahi Glass Koriyama Elec. Material Sato,Ryota Asahi Glass Koriyama Elec. Material Murakami +1 more
- 23 Apr 2004
TL;DR: In this paper, a diffraction element and an optical head device are used for signal detection in the optical path between a light source and an objective lens, where one of the projection-recess members is made of a material having a light absorption end in a wavelength band shorter than the wavelength used and the refractive index of the material of the one member is lower than that of the other member in the whole band of the wavelengths used.
56
References
Patent
Diffractive optical elements as combiners
W. Hudson Welch
- 07 Jun 1995
TL;DR: In this article, a combiner for combining light traveling on two optical paths to permit coincident viewing of the light includes a light-transmissive substrate having first and second surfaces, the first surface having a first diffractive structure that is a computer-generated hologram formed thereon configured to correct aberrations in light travelling on the first optical path which may be incident on the second surface and a partially reflective coating on the 1D structure.
51
Patent
Dual diffraction grating beam splitter
Mool C. Gupta
- 01 Jun 1992
TL;DR: A dual diffraction grating as discussed by the authors comprises first and second light diffracting surfaces of identical pitch and depth, wherein the diffraction grooves of the first and the second diffraction surfaces are angularly oriented with respect to one another.
27
Patent
Achromatic optical system including diffractive optical element, and method of forming same
Michael R. Feldman,Bob Te Kolste,W. Hudson Welch,Hedong Yang +3 more
- 06 Jun 1995
TL;DR: In this article, a method of forming an achromatic diffractive optical element is also provided, which includes the steps of determining a first data set comprising a plurality of discrete phase values and discrete transition values and selecting from the first data sets phase value and transition values to form a second data set for defining first and second holograms.
26
Patent
Birefringent grating polarizing beam splitter
Yansong Chen,Shangquiq Liu,Alex Ignatiev,Naijuan Wu +3 more
- 30 Aug 1996
TL;DR: In this paper, a birefringence polarizing beam-splitter with a series of periodic blazed grooves or grooves with echelon profile having a number of steps is provided on the surface of an optically bire-fringent material.
22
Patent
Optical head having a grating with a doubly periodic structure
Mool C. Gupta,Song-Tsuen Peng +1 more
- 26 Jun 1991
TL;DR: In this paper, an optical head is disclosed in which a beam from a diode laser is directed onto an optical disc, and a beam reflected from the optical disc is passed through an optical device which forms a plurality of discrete beams of different orders.
20
Related Papers (5)
Fumiyoshi Imamura,Tetsuya Ishii,文美 今村,哲也 石井 +3 more
- 07 Sep 1995
Carmina Londono,Peter P. Clark +1 more
- 01 Jan 1991