Zobrazeno 1 - 10
of 24
pro vyhledávání: '"Hiroyuki Kowa"'
Publikováno v:
Optical Metrology and Inspection for Industrial Applications V.
A method for extracting properties of individual components of a retader-linear diattenuator- retarder system is proposed. Since the evaluation performs in noncontact and nondestructive way, this method is applicable to inspect as-produced devices an
Autor:
Taisuke Miura, Toshitaka Wakayama, Misaki Shoji, Takeshi Higashiguchi, Kazuyuki Sakaue, Hirokazu Ishida, Hiroyuki Kowa
Publikováno v:
Applied Optics. 59:10846
We demonstrated detection of birefringence singularity on the space-variant retarder with an inhomogeneous birefringence distribution by supercontinuum vector beam. The birefringence measurement by supercontinuum vector beam analysis provides kinemat
Autor:
Taisuke Miura, Toshitaka Wakayama, Takeshi Higashiguchi, Hiroyuki Kowa, Hirokazu Ishida, Misaki Shoji, Kazuyuki Sakaue
Publikováno v:
Applied Optics. 59:7131
We demonstrated a single-shot, multispectral birefringence mapping by use of a supercontinuum (SC) vector beam. The vector beam, which was generated by a pair of axially symmetric wave plates, leads to angular-variant polarization modulation to divid
Publikováno v:
Journal of the Japan Society for Precision Engineering. 73:253-258
Publikováno v:
Proceedings of SPIE; 9/4/2018, Vol. 10819, p1-7, 7p
Autor:
Norihiro Umeda, Masayoshi Kanasaki, Kanae Muraki, Yoshiro Tajitsu, Mitsuo Tsukiji, Kenji Imoto, Katsunori Morii, Hiroyuki Kowa, Komei Tahara
Publikováno v:
Macromolecular Symposia. 242:235-240
We produced a new system for measuring the small photoelastic constant of a polymer thin film with a small birefringence. Using our mesurement system, we evaluated the photoelastic constant of a polymer film in real time by quantitative analysis. Pho
Autor:
Yoshiro Tajitsu, Kanae Muraki, Hiroyuki Kowa, Mitsuo Tsukiji, Norihiro Umeda, Katsunori Morii, Masahiro Honda
Publikováno v:
Japanese Journal of Applied Physics. 45:7531-7534
In order to study the light modulation properties due to the electrooptical effect, we prepared piezoelectric poly(L-lactic acid) (PLLA) films by drawing and annealing, and ferroelectric polyurea-5 (PU5) by vapor deposition. In all PLLA films fabrica
Publikováno v:
Journal of the Japan Society for Precision Engineering. 61:1695-1699
位相シフト法を導入した格子パターン投影法に正弦格子を適用するとともに0次のしまの決定を行う方式によって, 実際にレンズ素材の形状計測を行った.正弦格子を利用することによって
Publikováno v:
SPIE Proceedings.
We propose and demonstrate a novel visual encryption device composed of higher-order birefringent elements. When an optical material with higher-order birefringence is placed between a pair of polarizers and illuminated by white light, it appears onl
Publikováno v:
SPIE Proceedings.
An image detection system for vacuum ultra-violet region used a F2 laser (157nm) as a light source is proposed. A fluorescent glass (LUMILASS-G9) is employed to convert UV light into visible light. Characteristics of fluorescent glass are studied. So