公开(公告)号：US20170307165A1

公开(公告)日：2017-10-26

申请号：US15506033

申请日：2015-08-12

申请人： Hella KGaA Hueck & Co.

发明人： Michael Schöne

IPC分类号： F21S8/10 ,  G02B27/42 ,  G02B13/14

CPC分类号： F21S41/275 ,  F21S41/143 ,  F21S41/663 ,  G02B13/14 ,  G02B27/4272 ,  G02B27/4277 ,  G02B27/4283 ,  G02B27/4294

摘要： A lighting apparatus for vehicles with a number of semiconductor-based light sources and a projection device for generating the specified light distribution with a cut-off line. The projection device features a correction device with at least two lenses. The surface of at least one of the lenses is designed as a diffractive lens surface for achromatization in a visible wavelength range. The two lenses are made from different lens materials. The surfaces of at least two lenses are designed as refractive lens surfaces that have their optical power calculated based on a temperature range and/or expansion coefficient of the lens material of at least two lenses such that adding the optical power of the lenses yields a predefined total optical power of the correction device.

公开(公告)号：US08724187B2

公开(公告)日：2014-05-13

申请号：US13772371

申请日：2013-02-21

申请人： KYOCERA Document Solutions Inc.

发明人： Hideji Mizutani ,  Issei Nakano

IPC分类号： H04N1/04

CPC分类号： G02B27/30 ,  G02B27/4283 ,  H04N1/04

摘要： In a collimator lens, in a case where divergent light emitted from a position P1 at a distance S1 from a second face enters the second face and imaging is performed at a position P2 at a distance S2 from a first face, in a temperature range of 0° C. to 60° C. and in a range of the emission wavelength of the light source which changes within the temperature range, and when a minimum value of a wavefront aberration of an image, which is generated at the position P2 by the divergent light emitted from the position P1 in a range of 0

摘要翻译： 在准直透镜中，在距离第二面的距离S1的位置P1发射的发散光进入第二面的情况下，在距离第一面的距离S2的位置P2进行成像，在 在温度范围内变化的光源的发射波长的范围内，并且当在位置P2处产生的图像的波前像差的最小值为0°至60°C时， 在0

公开(公告)号：US08233370B2

公开(公告)日：2012-07-31

申请号：US12797750

申请日：2010-06-10

申请人： Toshifumi Yasui

发明人： Toshifumi Yasui

IPC分类号： G11B7/00

CPC分类号： G02B27/0037 ,  G02B5/1895 ,  G02B27/4238 ,  G02B27/4283 ,  G02B27/4288 ,  G11B7/1353 ,  G11B7/1374 ,  G11B7/13922 ,  G11B2007/0006

摘要： Provided is an objective lens used in an optical pickup that performs recording and/or reproducing of information signals on three different types of optical discs using different wavelengths. The objective lens is configured to collect light beams with the at least three wavelengths λ1, λ2, and λ3, which satisfy a relationship of λ1

摘要翻译： 提供了一种用于光学拾取器中的物镜，其在使用不同波长的三种不同类型的光盘上执行信息信号的记录和/或再现。 物镜被配置为在与各个波长对应的兼容光盘的信号记录表面上收集满足λ1<λ2<λ3的关系的至少三个波长λ1，λ2和λ3的光束。 物镜包括：具有形成在入射侧表面上的预定衍射结构的衍射部分。 衍射部分具有设置在最内周部分以衍射光束的第一区域，设置在第一区域外部以便衍射光束的第二区域，以及设置在第二区域的第三区域 第二区。

公开(公告)号：US20110228368A1

公开(公告)日：2011-09-22

申请号：US13152989

申请日：2011-06-03

申请人： Kohji SAKAI ,  Yoshinori HAYASHI ,  Takeshi UEDA ,  Daisuke ICHII ,  Kenichiroh SAISHO

发明人： Kohji SAKAI ,  Yoshinori HAYASHI ,  Takeshi UEDA ,  Daisuke ICHII ,  Kenichiroh SAISHO

IPC分类号： G02B26/10

CPC分类号： G02B27/42 ,  G02B26/124 ,  G02B27/4227 ,  G02B27/4283

摘要： An optical scanning device includes a first optical system for guiding light beams emitted from a plurality of light emitting units to an optical deflector, and a second optical system for focusing the light beams to optically scan a surface to be scanned. At least one of the first optical system and the second optical system includes a resin lens having a diffractive surface. The diffractive surface includes a diffractive portion and a refractive portion. A power of the diffractive portion and a power of the refractive portion cancel each other.

摘要翻译： 光学扫描装置包括用于将从多个发光单元发射的光束引导到光学偏转器的第一光学系统和用于聚焦光束以光学扫描要扫描的表面的第二光学系统。 第一光学系统和第二光学系统中的至少一个包括具有衍射面的树脂透镜。 衍射面包括衍射部分和折射部分。 衍射部分的功率和折射部分的功率彼此抵消。

公开(公告)号：US07973990B2

公开(公告)日：2011-07-05

申请号：US11740070

申请日：2007-04-25

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

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

IPC分类号： G02B26/08

CPC分类号： G02B27/42 ,  G02B26/124 ,  G02B27/4227 ,  G02B27/4283

摘要： An optical scanning device includes a first optical system for guiding light beams emitted from a plurality of light emitting units to an optical deflector, and a second optical system for focusing the light beams to optically scan a surface to be scanned. At least one of the first optical system and the second optical system includes a resin lens having a diffractive surface. The diffractive surface includes a diffractive portion and a refractive portion. A power of the diffractive portion and a power of the refractive portion cancel each other.

公开(公告)号：US20100252942A1

公开(公告)日：2010-10-07

申请号：US12814223

申请日：2010-06-11

申请人： Reona Ushigome

发明人： Reona Ushigome

IPC分类号： B29D11/00

CPC分类号： G02B27/42 ,  G02B27/4211 ,  G02B27/4216 ,  G02B27/4272 ,  G02B27/4283

摘要： A diffractive optical element includes stacked first and second diffraction gratings made of different materials. The materials of the first and second diffraction gratings are glass. The first and second diffraction gratings have grating surfaces contacted to each other. The materials satisfy a predetermined condition when Tg2 and At2 are a transformation point temperature and a yield point temperature of the material of the first diffraction grating, and Tg3 and At3 are a transformation point temperature and a yield point temperature of the material of the second diffraction grating.

摘要翻译： 衍射光学元件包括由不同材料制成的堆叠的第一和第二衍射光栅。 第一和第二衍射光栅的材料是玻璃。 第一和第二衍射光栅具有彼此接触的光栅表面。 当Tg2和At2是第一衍射光栅的材料的相变点温度和屈服点温度时，材料满足预定条件，Tg3和At3是第二衍射材料的相变点温度和屈服点温度 光栅。

公开(公告)号：US07672212B2

公开(公告)日：2010-03-02

申请号：US11712960

申请日：2007-03-02

申请人： Kentarou Nakamura ,  Kohei Ota ,  Nobuyoshi Mori ,  Eiji Nomura

发明人： Kentarou Nakamura ,  Kohei Ota ,  Nobuyoshi Mori ,  Eiji Nomura

IPC分类号： G11B7/00

CPC分类号： G11B7/1374 ,  G02B3/08 ,  G02B27/42 ,  G02B27/4238 ,  G02B27/4283 ,  G11B7/123 ,  G11B7/1275 ,  G11B7/1353 ,  G11B7/13922 ,  G11B2007/0006

摘要： An optical pickup apparatus according to the present invention includes: a first light source for emitting a first light flux; a second light source for emitting a second light flux; a third light source for emitting a third light flux; and an objective optical element. The objective optical element has an optical surface including at least two areas provided with optical path difference providing structures. The objective optical element converges the first to third light fluxes each passing through the predetermined areas on the objective optical element onto respective information recording surfaces of the first to third optical disks. The first optical path difference providing structure is a ring-shaped structure which includes a plurality of ring-shaped zones including respective steps having at least two kinds of amounts selected from the predetermined expressions.

摘要翻译： 根据本发明的光拾取装置包括：用于发射第一光通量的第一光源; 用于发射第二光通量的第二光源; 用于发射第三光通量的第三光源; 和物镜光学元件。 物镜光学元件具有包括设置有光程差提供结构的至少两个区域的光学表面。 物镜光学元件将通过物镜光学元件上的预定区域的第一至第三光束会聚到第一至第三光盘的相应信息记录表面上。 第一光程差提供结构是环形结构，其包括多个环形区域，包括从预定表达式中选择的至少两种量的各个步骤。

公开(公告)号：US07656770B2

公开(公告)日：2010-02-02

申请号：US11713042

申请日：2007-03-02

申请人： Kentarou Nakamura ,  Kohei Ota ,  Nobuyoshi Mori ,  Eiji Nomura

发明人： Kentarou Nakamura ,  Kohei Ota ,  Nobuyoshi Mori ,  Eiji Nomura

IPC分类号： G11B7/00

CPC分类号： G11B7/1374 ,  G02B3/08 ,  G02B27/42 ,  G02B27/4238 ,  G02B27/4283 ,  G11B7/123 ,  G11B7/1275 ,  G11B7/1353 ,  G11B7/13922 ,  G11B2007/0006

摘要： An optical pickup apparatus according to the present invention includes: a first light source for emitting a first light flux; a second light source for emitting a second light flux; a third light source for emitting a third light flux; and an objective optical element. The objective optical element has an optical surface including at least two areas provided with optical path difference providing structures. The objective optical element converges the first to third light fluxes each passing through the predetermined areas on the objective optical element onto respective information recording surfaces of the first to third optical disks. One of the optical path difference providing structures includes a first basic structure and a second basic structure which are predetermined optical path difference providing structures and overlap with each other.

摘要翻译： 根据本发明的光拾取装置包括：用于发射第一光通量的第一光源; 用于发射第二光通量的第二光源; 用于发射第三光通量的第三光源; 和物镜光学元件。 物镜光学元件具有包括设置有光程差提供结构的至少两个区域的光学表面。 物镜光学元件将通过物镜光学元件上的预定区域的第一至第三光束会聚到第一至第三光盘的相应信息记录表面上。 光路差分提供结构之一包括第一基本结构和第二基本结构，它们是预定的光程差提供结构并彼此重叠。

公开(公告)号：US07609428B2

公开(公告)日：2009-10-27

申请号：US11755120

申请日：2007-05-30

申请人： Takashi Shiraishi

发明人： Takashi Shiraishi

IPC分类号： G02B26/08

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

摘要： There is provided a technique in which in an optical beam scanning device, optical characteristics can be suitably corrected according to a change in environmental temperature. The optical beam scanning device is configured to shape a divergent light from a light source into a light flux having a specified sectional shape by a pre-deflection optical system and to guide the light flux, which is shaped by the pre-deflection optical system 7 and is deflected and scanned in a main scanning direction by a rotation deflector, to a photosensitive surface of each of plural photosensitive bodies by a post-deflection optical system A, the pre-deflection optical system 7 includes a first optical element which is an optical element having a negative power and in which a main light beam of the light flux guided in the pre-deflection optical system 7 passes along an optical axis of the optical element, and the post-deflection optical system A includes at least one second optical element which is an optical element including a diffraction grating formed on at least one of a light flux incident surface and a light flux outgoing surface and in which main light beams of light fluxes to be guided to the respective plural photosensitive bodies are incident on incident positions different from each other in a sub-scanning direction orthogonal to the main scanning direction.

摘要翻译： 提供一种技术，其中在光束扫描装置中，可以根据环境温度的变化适当地校正光学特性。 光束扫描装置被配置为通过预偏转光学系统将来自光源的发散光成形为具有指定截面形状的光束，并且引导由偏转前光学系统7成形的光束 并且通过偏转偏转器在主扫描方向上被偏转和扫描，通过偏转后光学系统A到达多个感光体中的每一个的感光表面，预偏转光学系统7包括第一光学元件，其为光学 具有负功率的元件，其中在偏转前光学系统7中引导的光束的主光束沿着光学元件的光轴通过，并且偏转后光学系统A包括至少一个第二光学元件 其是包括形成在光束入射表面和光束出射表面中的至少一个上的衍射光栅的光学元件，其中主光束 被引导到各个感光体的通量在与主扫描方向正交的副扫描方向上彼此不同的入射位置入射。

公开(公告)号：US20090059333A1

公开(公告)日：2009-03-05

申请号：US12219529

申请日：2008-07-23

申请人： Kohji Sakai

发明人： Kohji Sakai

IPC分类号： G02B26/10

CPC分类号： G02B26/124 ,  G02B7/008 ,  G02B27/0037 ,  G02B27/4227 ,  G02B27/4283

摘要： An optical scanning apparatus includes a semiconductor laser and a first optical element that are fixed on a single continuous member. A second optical element, which is a diffraction optical element, has a diffracting surface in which an elliptical groove is formed and which includes a diffracting portion power such that a change in the beam waist position in a main scan direction and a sub-scan direction due to temperature variation in the optical scanning apparatus becomes substantially zero. The member on which the semiconductor laser and the first optical element are fixed has a linear coefficient of expansion such that the ellipticity of the elliptical groove increases.

摘要翻译： 光学扫描装置包括固定在单个连续构件上的半导体激光器和第一光学元件。 作为衍射光学元件的第二光学元件具有衍射面，其中形成有椭圆形槽，并且包括衍射部分的力，使得在主扫描方向和副扫描方向上的光束腰部位置的变化 由于光学扫描装置的温度变化大致为零。 半导体激光器和第一光学元件固定的部件具有线性膨胀系数，使得椭圆形槽的椭圆度增加。