公开(公告)号：US20140354367A1

公开(公告)日：2014-12-04

申请号：US14357804

申请日：2012-11-29

申请人： RICOH COMPANY, LTD.

发明人： Ryoichiro Suzuki ,  Shunichi Sato

IPC分类号： H01S5/187 ,  H03L7/26 ,  H01S5/34 ,  H01S5/40 ,  H01S5/343 ,  H03B17/00 ,  H01S5/42

CPC分类号： H01S5/187 ,  B82Y20/00 ,  G04F5/145 ,  H01S5/026 ,  H01S5/0421 ,  H01S5/18311 ,  H01S5/18341 ,  H01S5/18344 ,  H01S5/18358 ,  H01S5/18369 ,  H01S5/2086 ,  H01S5/3407 ,  H01S5/34313 ,  H01S5/34373 ,  H01S5/4087 ,  H01S5/42 ,  H01S5/423 ,  H01S2301/166 ,  H01S2301/176 ,  H03B17/00 ,  H03L7/26

摘要： Disclosed is a surface-emitting laser element including a semiconductor substrate and plural surface-emitting lasers configured to emit light mutually different wavelengths, each surface-emitting laser including a lower Bragg reflector provided on the semiconductor substrate, a resonator provided on the lower Bragg reflector, an upper Bragg reflector provided on the resonator, and a wavelength adjustment layer provided in the upper Bragg reflector or lower Bragg reflector, the wavelength adjustment layers included in the surface-emitting lasers having mutually different thicknesses, at least one of the wavelength adjustment layers including adjustment layers made of two kinds of materials, and numbers of the adjustment layers included in the wavelength adjustment layers being mutually different.

摘要翻译： 公开了一种表面发射激光器元件，包括半导体衬底和多个表​​面发射激光器，其被配置为发射相互不同波长的光，每个表面发射激光器包括设置在半导体衬底上的下布拉格反射器，设置在下布拉格反射器 设置在谐振器上的上布拉格反射器和设置在上布拉格反射器或下布拉格反射器中的波长调节层，包括在具有相互不同厚度的表面发射激光器中的波长调节层，至少一个波长调节层 包括由两种材料制成的调节层，并且包括在波长调节层中的调节层的数量彼此不同。

公开(公告)号：US11527666B2

公开(公告)日：2022-12-13

申请号：US15309067

申请日：2015-07-08

申请人： RICOH COMPANY, LTD.

发明人： Shunichi Sato

IPC分类号： H01L31/0687 ,  H01L31/0693 ,  H01L31/0304 ,  H01L31/18 ,  H01L27/30 ,  H01L31/0725 ,  H01L21/02

摘要： A compound-semiconductor photovoltaic cell includes a first photoelectric conversion cell made of a first compound-semiconductor material which lattice matches with GaAs or Ge; a first tunnel junction layer arranged on a deep side farther than the first photoelectric conversion cell in a light incident direction, and including a first p-type (Alx1Ga1-x1)y1In1-y1As (0≤x1

公开(公告)号：US10686089B2

公开(公告)日：2020-06-16

申请号：US14945664

申请日：2015-11-19

申请人： RICOH COMPANY, LTD.

发明人： Shunichi Sato

IPC分类号： H01L31/054 ,  H01L31/02 ,  H01L31/0304 ,  H01L31/075 ,  H01L31/0687 ,  H01L31/0312

摘要： A concentrator photovoltaic cell includes a light condenser element configured to condense light, a first photoelectric conversion cell configured to perform a photoelectric conversion, a second photoelectric conversion cell configured to perform a photoelectric conversion, a first output circuit configured to output a first output current which is output by the first photoelectric conversion cell, and a second output circuit configured to output a second output current which is output by the second photoelectric conversion cell.

公开(公告)号：US11245249B2

公开(公告)日：2022-02-08

申请号：US16287541

申请日：2019-02-27

申请人： Ricoh Company, Ltd.

发明人： Takeshi Kawashima ,  Shunichi Sato ,  Morimasa Kaminishi ,  Hirokazu Iwata

IPC分类号： H01S5/183 ,  H01S5/22 ,  H01S5/024 ,  H01S5/343 ,  H01S5/42 ,  H01S5/042 ,  G03B21/20 ,  F21S41/176 ,  F21S41/16 ,  G02B26/08 ,  G02B26/10

摘要： A reflector includes a low refractive index layer and a high refractive index layer. The low refractive index layer has a first average refractive index and has a laminated structure in which an AlN layer and a GaN layer are alternately laminated. The high refractive index layer has a second average refractive index higher than the first average refractive index and includes an InGaN layer.