公开(公告)号：US08020054B2

公开(公告)日：2011-09-13

申请号：US12540990

申请日：2009-08-13

申请人： Kohji Sakai

发明人： Kohji Sakai

IPC分类号： G11C29/00 ,  G11C7/00

CPC分类号： G11C29/56 ,  G11C29/56008 ,  G11C2029/5606

摘要： A test apparatus provided in common for a plurality of memories under test, comprising an address generating section that sequentially generates addresses to be tested in the memories under test and a plurality of buffer memories that are provided to correspond respectively to the memories under test and that each store addresses to be independently supplied to the corresponding memory under test. The test apparatus (i) compares block data output by a memory under test in response to a read command to an expected value of this block data, for each generated address, (ii) sequentially stores, in the corresponding buffer memory and in response to detection of a discrepancy in the comparison, the address generated for reading the block data, and (iii) writes, in parallel to the plurality of memories under test, disable data that includes, as individual addresses, the addresses stored in the buffer memory.

摘要翻译： 一种对被测试的多个存储器共同提供的测试装置，包括地址产生部分，其顺序地产生被测试存储器中要测试的地址，以及多个缓冲存储器，被提供以分别对应于被测试的存储器，并且 每个商店地址要独立提供给相应的被测内存。 测试装置（i）对于每个生成的地址，将响应于读取命令的读取命令的输出的块数据与该块数据的期望值进行比较，（ii）顺序地将其存储在相应的缓冲存储器中，并响应于 检测比较中的差异，产生用于读取块数据的地址，以及（iii）与被测试的多个存储器并行地写入禁止包含存储在缓冲存储器中的地址作为单独地址的数据。

公开(公告)号：US07616364B2

公开(公告)日：2009-11-10

申请号：US11340646

申请日：2006-01-27

申请人： Kenichiroh Saisho ,  Kohji Sakai

发明人： Kenichiroh Saisho ,  Kohji Sakai

IPC分类号： G02B26/08

CPC分类号： B41J2/473 ,  G02B13/08 ,  G02B26/125

摘要： A scanning optical system includes converges, with a single lens, a divergent luminous flux, which is deflected in a main scanning direction by an optical deflector, on a surface of a scan target. The lens has two surfaces in a biconvex shape in both the main scanning direction and a sub-scanning direction, and at least one of the surfaces is a toric surface in which a line that connects, on a cross section in the main scanning direction, centers of curvature in a cross section in the sub-scanning direction is nonlinear, and change of the curvature of the toric surface in the cross section in the sub-scanning direction along the main scanning direction is asymmetric with an optical axis of the lens. The surfaces are anamorphic surfaces.

摘要翻译： 扫描光学系统包括具有单个透镜的在光学偏转器的主扫描方向上偏转的发散光束在扫描对象的表面上的会聚。 透镜具有在主扫描方向和副扫描方向上具有双凸形状的两个表面，并且至少一个表面是复曲面，其中在主扫描方向的横截面上连接的线， 沿副扫描方向的横截面中的曲率中心是非线性的，沿着主扫描方向的副扫描方向的截面中的复曲面的曲率的变化与透镜的光轴不对称。 表面是变形表面。

公开(公告)号：US20090002792A1

公开(公告)日：2009-01-01

申请号：US12230077

申请日：2008-08-22

申请人： Kohji Sakai ,  Yoshinori Hayashi ,  Daisuke Ichii

发明人： Kohji Sakai ,  Yoshinori Hayashi ,  Daisuke Ichii

IPC分类号： G02B26/10

CPC分类号： G02B26/125 ,  G02B26/124 ,  G02B27/0031 ,  G02B27/0037 ,  G02B27/4227 ,  G02B27/4283

摘要： An optical scanning device includes a first optical element that converts a cross-section shape of a light beam from a semiconductor laser to a desired shape; a second optical element that guides the light beam output from the first optical element to an optical deflector that deflects the light beam; and a third optical element that gathers the light beam deflected by the optical deflector onto a surface to be scanned to form a light spot thereby optically scanning the surface. At least one of the first optical element, the second optical element, and the third optical element includes a resin-made lens, at least one of the resin-made lenses has a power diffracting surface, and a surface shape of at least one of power diffracting surfaces is formed so that a power of a diffracting portion and a power of a refractive portion are cancelled out.

公开(公告)号：US07417777B2

公开(公告)日：2008-08-26

申请号：US11844643

申请日：2007-08-24

申请人： Kenichiroh Saisho ,  Yoshinori Hayashi ,  Takeshi Ueda ,  Kohji Sakai ,  Daisuke Ichii

发明人： Kenichiroh Saisho ,  Yoshinori Hayashi ,  Takeshi Ueda ,  Kohji Sakai ,  Daisuke Ichii

IPC分类号： G02B26/08

CPC分类号： G02B26/124 ,  G02B5/1876 ,  H04N1/1135 ,  H04N2201/0471 ,  H04N2201/04729 ,  H04N2201/04732 ,  H04N2201/04744

摘要： A coupling lens arranged on an optical path of an optical beam from a VCSEL, which has a refraction plane and a diffraction plane that respectively change a power according to a temperature change and suppresses a beam-waist position change in a main-scanning direction and a sub-scanning directions on the scanning surface caused by the temperature change, by a wavelength change of the optical beam caused by power changes of the refraction plane and the diffraction plane and the temperature change. A deflecting unit deflects the optical beam that passed through the coupling lens. A scanning optical system condenses a deflected optical beam on the scanning surface.

摘要翻译： 耦合透镜，布置在来自VCSEL的光束的光路上，所述光束具有根据温度变化分别改变功率的折射面和衍射面，并抑制主扫描方向上的束腰位置变化， 通过由折射平面和衍射面的功率变化引起的光束的波长变化和温度变化，由温度变化引起的扫描表面上的副扫描方向。 偏转单元使通过耦合透镜的光束偏转。 扫描光学系统将偏转的光束冷凝在扫描表面上。

公开(公告)号：US07362486B2

公开(公告)日：2008-04-22

申请号：US11223051

申请日：2005-09-12

申请人： Yoshinori Hayashi ,  Takeshi Ueda ,  Kohji Sakai

发明人： Yoshinori Hayashi ,  Takeshi Ueda ,  Kohji Sakai

IPC分类号： G02B26/08 ,  G02B3/08

CPC分类号： G02B19/0057 ,  G02B7/008 ,  G02B19/0014 ,  G02B26/124 ,  G02B26/125 ,  G02B27/0031 ,  G02B27/4211 ,  G02B27/4227 ,  G02B27/4283

摘要： A first optical system guides a light beam from a light source to an optical deflector, and a second optical system converges the light beam deflected by the optical deflector on a surface to be scanned. The first optical system includes at least one resin lens having a diffractive surface. The second optical system includes at least one resin optical element. A beam diameter depth in a main scanning direction, Wm, that can have a maximum intensity of 1/e2, satisfies conditions Δm1+Δm2+Δm3−Δd1×(f2/f1)2 0 and Δm2

摘要翻译： 第一光学系统将来自光源的光束引导到光学偏转器，并且第二光学系统将由光学偏转器偏转的光束会聚在待扫描的表面上。 第一光学系统包括至少一个具有衍射表面的树脂透镜。 第二光学系统包括至少一个树脂光学元件。 主扫描方向的光束直径深度Wm可以具有最大强度为1 / e <2>的条件满足条件<？in-line-formula description =“In-line Formulas”end = “lead”？> Deltam1 + Deltam2 + Deltam3-Deltad1​​x（f2 / f1） <？in-line-formula description =”In-line Formulas“end =”lead“？> Deltad1​​> 0和Deltam2 <0。 （2）<？in-line-formula description =“In-line Formulas”end =“tail”？>

公开(公告)号：US20080068689A1

公开(公告)日：2008-03-20

申请号：US11850401

申请日：2007-09-05

申请人： Kenichiro SAISHO ,  Yoshinori Hayashi ,  Kohji Sakai

发明人： Kenichiro SAISHO ,  Yoshinori Hayashi ,  Kohji Sakai

IPC分类号： G02B26/10 ,  G02B5/18

CPC分类号： G02B26/125 ,  G02B5/1895 ,  G02B27/0043 ,  G02B27/4227 ,  G02B27/4283

摘要： A diffractive-optical element that is transparent includes a diffraction surface that is formed by a step. A width of the step is set substantially equal to a common multiple of λi/{n(λi)−1} for two or more wavelengths, where λi (i=1, 2, . . . ) is a wavelength and n(λi) is a refractive index with respect to the wavelength λi.

摘要翻译： 透明的衍射光学元件包括通过台阶形成的衍射面。 步长的宽度被设置为基本上等于两个或更多个波长的λ的共同倍数，其中λ_。

公开(公告)号：USRE40109E1

公开(公告)日：2008-02-26

申请号：US10436243

申请日：2003-05-13

申请人： Kohji Sakai ,  Magane Aoki

发明人： Kohji Sakai ,  Magane Aoki

IPC分类号： G02B26/08 ,  B41J27/00

CPC分类号： G02B26/123

摘要： A multi-beam optical scanner, in which a lateral magnification β in a composite system of an optical system between the light source for a multi-beam and the scanned surface satisfies the condition: 2

摘要翻译： 一种多光束光学扫描器，其中在用于多光束的光源和扫描的表面之间的光学系统的复合系统中的横向放大率β满足条件：2 <β≤8.5，以及多个光 扫描表面上的斑点执行彼此相邻的扫描线的光学扫描。

公开(公告)号：US20070211326A1

公开(公告)日：2007-09-13

申请号：US11714116

申请日：2007-03-06

申请人： Kenichiroh Saisho ,  Kohji Sakai

发明人： Kenichiroh Saisho ,  Kohji Sakai

IPC分类号： G02B26/08

CPC分类号： G02B26/125

摘要： A scanning optical system condensing a beam deflected by an optical deflector so as to form a beam spot on a surface to be scanned, comprises two lenses. A lens on the side of optical deflector has a negative refracting power in sub-scanning direction. A lens on the side of surface to be scanned has a positive refracting power in the sub-scanning direction. At least one lens surface of the lens surfaces of the two lenses is such that a shape in a sub-scanning section thereof is a non-arc shape.

摘要翻译： 一种扫描光学系统，其将由光学偏转器偏转的光束聚光以在待扫描的表面上形成束斑，包括两个透镜。 光偏转器一侧的透镜在副扫描方向上具有负的折射光焦度。 待扫描表面一侧的透镜在副扫描方向上具有正折射力。 两个透镜的透镜表面的至少一个透镜表面使得其副扫描部分中的形状为非弧形。

公开(公告)号：US07034973B2

公开(公告)日：2006-04-25

申请号：US10391580

申请日：2003-03-20

申请人： Kohji Sakai

发明人： Kohji Sakai

IPC分类号： G02B26/08

CPC分类号： G02B26/125

摘要： A scanning optical system condensing a light flux deflected by an optical deflector so as to form an optical spot on a surface to be scanned, includes a unitary lens, wherein: a lens configuration in a main scanning cross section is both surfaces with a convex configuration; a lens configuration in a sub-scanning cross section is both surfaces with a convex configuration; both surfaces of the lens are anamorphic surfaces; and a lateral magnification β2 in a sub-scanning direction of a central image height of said optical system satisfies the following condition (1): 0.5≦|β2|≦3.0.   (1)

摘要翻译： 一种将由光学偏转器偏转的光束聚光以在待扫描的表面上形成光点的扫描光学系统包括单一透镜，其中：主扫描横截面中的透镜构造是具有凸形构造的两个表面 ; 副扫描横截面中的透镜构造是具有凸形构造的两个表面; 透镜的两个表面都是变形表面; 并且在所述光学系统的中心图像高度的副扫描方向上的横向放大倍数β2满足以下条件（1）：<？in-line-formula description =“在线公式 “end =”lead“？> 0.5 <= | beta 2 <= 3.0。 （1）<？in-line-formula description =“In-line Formulas”end =“tail”？>

公开(公告)号：US6166842A

公开(公告)日：2000-12-26

申请号：US233884

申请日：1999-01-20

申请人： Magane Aoki ,  Kohji Sakai

发明人： Magane Aoki ,  Kohji Sakai

IPC分类号： G02B26/12 ,  G02B26/08

CPC分类号： G02B26/125 ,  Y10S359/90

摘要： A scanning and image forming lens system in an optical scanning apparatus optical scans a surface to be scanned by deflecting a luminous flux emitted from a light source in a direction corresponding to a main scanning direction via an optical deflector at equiangular velocity. The scanning image forming lens system transmits the luminous flux deflected by the optical deflector so as to condense the luminous flux into an optical beam spot on the surface to be scanned and to scan the surface to be scanned with the optical beam spot. The scanning image forming lens system includes one or more image forming optical elements including at least one lens. At least one lens surface of the at least one lens of the scanning image forming lens system has a non-arc shape in a sub scanning cross section. The non-arc shape changes according to a position in a direction that is substantially perpendicular to the sub scanning cross section such that a positional deviation of the optical beam waist of the deflected luminous flux from the surface to be scanned at each position in the direction perpendicular to the sub scanning cross section, which is caused by a paraxial curvature of field of the scanning image forming lens system in a sub scanning direction, is corrected.