公开(公告)号：US07518794B2

公开(公告)日：2009-04-14

申请号：US12018043

申请日：2008-01-22

申请人： Naoko Hikichi ,  Kenichi Nakama

发明人： Naoko Hikichi ,  Kenichi Nakama

IPC分类号： G02B5/18

CPC分类号： G02B5/1866

摘要： A transmission diffraction optical element is presented in which ridges having a roughly rectangular cross-section shape are disposed parallel to each other at a regular pitch at the surface of a substrate. Striped thin-film layers are formed on these ridges and a thin-film layer is inserted between the substrate and the ridges. The thin-film layers are arranged at a regular pitch identical to the regular pitch of the ridges and the thin-film layer does not have a periodic pattern oriented in the same direction as the periodic pattern of the ridges.

摘要翻译： 呈现透射衍射光学元件，其中具有大致矩形横截面形状的脊以基板表面的规则间距彼此平行地设置。 在这些脊上形成带状的薄膜层，并且在衬底和脊之间插入薄膜层。 薄膜层以与脊的规则间距相同的规则间距布置，并且薄膜层不具有沿与脊的周期性图案相同的方向定向的周期性图案。

公开(公告)号：US07420735B2

公开(公告)日：2008-09-02

申请号：US11188030

申请日：2005-07-22

申请人： Naoko Hikichi ,  Kenichi Nakama

发明人： Naoko Hikichi ,  Kenichi Nakama

IPC分类号： G02B5/18

CPC分类号： G02B5/1866

摘要： A transmission diffraction optical element is presented in which ridges having a roughly rectangular cross-section shape are disposed parallel to each other at a regular pitch at the surface of a substrate. Striped thin-film layers are formed on these ridges and a thin-film layer is inserted between the substrate and the ridges. The thin-film layers are arranged at a regular pitch identical to the regular pitch of the ridges and the thin-film layer does not have a periodic pattern oriented in the same direction as the periodic pattern of the ridges.

摘要翻译： 呈现透射衍射光学元件，其中具有大致矩形横截面形状的脊以基板表面的规则间距彼此平行地设置。 在这些脊上形成带状的薄膜层，并且在衬底和脊之间插入薄膜层。 薄膜层以与脊的规则间距相同的规则间距布置，并且薄膜层不具有沿与脊的周期性图案相同的方向定向的周期性图案。

公开(公告)号：US20050200957A1

公开(公告)日：2005-09-15

申请号：US11078650

申请日：2005-03-11

申请人： Naoko Hikichi ,  Kenichi Nakama

发明人： Naoko Hikichi ,  Kenichi Nakama

IPC分类号： G02B5/18 ,  G01J3/28

CPC分类号： G02B5/1871

摘要： A transmission grating that provides low polarization dependent loss over a wide wave range and provides high diffraction efficiency even with a small groove pitch and high resolving power and dispersion. In a transmission grating 10, multiple parallel ridges 22 that are transparent for the wave range to be used are disposed on one side of a substrate 20 that is transparent for the wave range to be used. Parallel grooves 24 are formed at a fixed pitch a between these ridges. Light is applied from the surface of the transmission grating on which the grooves are formed and diffracted light is extracted from the substrate surface on which grooves are not formed. The groove pitch a is set to a range of 0.51 λc-1.48 λc, where λc is the central wavelength.

摘要翻译： 一种透射光栅，其在宽波段范围内提供低偏振相关损耗，即使具有较小的沟槽间距和高分辨能力和色散，也能提供高衍射效率。 在透射光栅10中，对于要使用的波长范围透明的多个平行脊22设置在对于使用的波长范围是透明的基板20的一侧。 在这些脊之间以固定的间距a形成平行的凹槽24。 从其上形成有沟槽的透射光栅的表面施加光，并且从未形成槽的衬底表面提取衍射光。 槽间距a设定为0.51 lambdac-1.48 lambdac的范围，其中lambdac是中心波长。

公开(公告)号：US20080106791A1

公开(公告)日：2008-05-08

申请号：US11943869

申请日：2007-11-21

申请人： Naoko Hikichi ,  Kenichi Nakama

发明人： Naoko Hikichi ,  Kenichi Nakama

IPC分类号： G02B5/18

CPC分类号： G02B5/1871

摘要： A transmission grating that provides low polarization dependent loss over a wide wave range and provides high diffraction efficiency even with a small groove pitch and high resolving power and dispersion. In a transmission grating 10, multiple parallel ridges 22 that are transparent for the wave range to be used are disposed on one side of a substrate 20 that is transparent for the wave range to be used. Parallel grooves 24 are formed at a fixed pitch a between these ridges. Light is applied from the surface of the transmission grating on which the grooves are formed and diffracted light is extracted from the substrate surface on which grooves are not formed. The groove pitch a is set to a range of 0.51 λc-1.48 λc, where λc is the central wavelength.

摘要翻译： 一种透射光栅，其在宽波段范围内提供低偏振相关损耗，即使具有较小的沟槽间距和高分辨能力和色散，也能提供高衍射效率。 在透射光栅10中，对于要使用的波长范围透明的多个平行脊22设置在对于使用的波长范围是透明的基板20的一侧。 在这些脊之间以固定的间距a形成平行的凹槽24。 从其上形成有沟槽的透射光栅的表面施加光，并且从未形成槽的衬底表面提取衍射光。 槽间距a设定为0.51 lambdac-1.48 lambdac的范围，其中lambdac是中心波长。

公开(公告)号：US07340131B2

公开(公告)日：2008-03-04

申请号：US11552247

申请日：2006-10-24

申请人： Kenichi Nakama ,  Naoko Hikichi

发明人： Kenichi Nakama ,  Naoko Hikichi

IPC分类号： G02B6/32

CPC分类号： G02B6/32 ,  G02B6/04 ,  G02B6/2937 ,  G02B6/29389 ,  G02B6/4215

摘要： It is a collimator adapted to convert divergent light beams outputted from an optical fiber bundle to parallel light beams through a collimator lens. A large diameter optical fiber is disposed between an optical fiber bundle, which is a bundle of a large number of multimode optical fibers and serves as one optical transmission path, and a collimator lens. A cross-section of the core of the large diameter optical fiber is larger than a range in which the cores of the optical fibers of the optical fiber bundle are present. Also, a group of divergent light beams outputted from the optical fibers of the optical fiber bundle is converted by the large diameter optical fiber to one light beam.

摘要翻译： 它是一种适于将从光纤束输出的发散光束通过准直透镜转换为平行光束的准直器。 大直径光纤配置在作为一个光传输路径的大量多模光纤的束的光纤束和准直透镜之间。 大直径光纤的芯的截面大于存在光纤束的光纤的芯的范围。 此外，从光纤束的光纤输出的一组发散光束被大直径光纤转换成一个光束。

公开(公告)号：US07319559B2

公开(公告)日：2008-01-15

申请号：US11038535

申请日：2005-01-21

申请人： Kenichi Nakama ,  Naoko Hikichi

发明人： Kenichi Nakama ,  Naoko Hikichi

IPC分类号： G02B5/18 ,  G02B1/10

CPC分类号： G02B5/1823

摘要： The present invention targets a spectral optical element that outputs a light inputted at a predetermined incident angle to a predetermined direction depending on its wavelength. A spectral optical element according to the present invention includes a transmission diffraction optical element, and an optical phase control element that is fixed and arranged to be opposed to a diffracted light output surface of the transmission diffraction optical element so that the diffracted light is inputted therein. Then, this optical phase control element is constructed so that an optical length with respect to a light passing through the optical phase control element is changed in accordance with change of a diffraction angle of the diffracted light depending on the wavelength.

摘要翻译： 本发明的目标是一种光谱元件，其根据其波长将预定入射角输入的光输出到预定方向。 根据本发明的光谱光学元件包括透射衍射光学元件和光学相位控制元件，其被固定和布置成与透射衍射光学元件的衍射光输出表面相对，使得衍射光被输入到其中 。 然后，该光学相位控制元件被构造成使得相对于通过光学相位控制元件的光的光学长度根据根据波长的衍射光的衍射角的变化而改变。

公开(公告)号：US20060153023A1

公开(公告)日：2006-07-13

申请号：US11318588

申请日：2005-12-28

申请人： Naoko Hikichi ,  Kenichi Nakama ,  Yasunori Arima

发明人： Naoko Hikichi ,  Kenichi Nakama ,  Yasunori Arima

IPC分类号： G11B7/00

CPC分类号： G02B5/1871 ,  G02B27/1086

摘要： An optical module according to the invention can achieve an optical system using a transmission-type diffraction grating for bending the optical path of incident light with a specific wavelength by about 90°. A substrate of the transmission-type diffraction grating is mounted at an angle in a range of ±5° with respect to the design incident angle α of the incident light. The optical system can be applied to a light multiplexing/demultiplexing module.

摘要翻译： 根据本发明的光学模块可以实现使用透射型衍射光栅的光学系统，用于将特定波长的入射光的光路弯曲约90°。 透射型衍射光栅的基板相对于入射光的设计入射角α以±5°的范围的角度安装。 光学系统可以应用于光复用/解复用模块。

公开(公告)号：US20060018020A1

公开(公告)日：2006-01-26

申请号：US11188030

申请日：2005-07-22

申请人： Naoko Hikichi ,  Kenichi Nakama

发明人： Naoko Hikichi ,  Kenichi Nakama

IPC分类号： G02B5/18

CPC分类号： G02B5/1866

摘要： A transmission diffraction optical element is presented in which ridges having a roughly rectangular cross-section shape are disposed parallel to each other at a regular pitch at the surface of a substrate. Striped thin-film layers are formed on these ridges and a thin-film layer is inserted between the substrate and the ridges. The thin-film layers are arranged at a regular pitch identical to the regular pitch of the ridges and the thin-film layer does not have a periodic pattern oriented in the same direction as the periodic pattern of the ridges.

公开(公告)号：US20060127640A1

公开(公告)日：2006-06-15

申请号：US11350830

申请日：2006-02-10

申请人： Fumitoshi Kobayashi ,  Katsuhide Shimmo ,  Naoko Hikichi

发明人： Fumitoshi Kobayashi ,  Katsuhide Shimmo ,  Naoko Hikichi

IPC分类号： B32B3/10

CPC分类号： G02B6/3644 ,  C03C15/00 ,  C03C19/00 ,  C03C23/0025 ,  G02B6/3652 ,  G02B6/3692 ,  G02B6/4204 ,  G02B6/4249 ,  Y10T428/24273

摘要： As a feature of a glass substrate having at least one fine hole according to the invention, a side wall surface of the fine hole is connected to each surface of the glass substrate by a curved surface as a boundary portion between the two. As another feature of the glass substrate, a layer denatured by machining is removed from the inner wall surface of the fine hole and the boundary portion between the wall surface and each surface of the glass substrate. The fine hole is produced by: forming a fine hole in a glass substrate by machining or laser machining; and then applying liquid-phase chemical etching to surfaces of the glass substrate and the fine hole. On this occasion, it is desirable that the etching liquid used for the liquid-phase chemical etching is either of an aqueous solution of hydrofluoric acid and an aqueous mixture solution of hydrofluoric acid and ammonium fluoride.