公开(公告)号：US20240427123A1

公开(公告)日：2024-12-26

申请号：US18734222

申请日：2024-06-05

Applicant: RealD Spark, LLC

Inventor： Michael G. Robinson ,  Graham J. Woodgate ,  Jonathan Harrold ,  Austin Wilson

IPC: G02B13/10 ,  F21V8/00 ,  G02B27/00 ,  G02B27/28

Abstract: An anamorphic directional illumination device may provide a near-eye display apparatus or a vehicle external light device. The anamorphic near-eye display device comprises a spatial light modulator with asymmetric pixels; an input transverse anamorphic lens; and an extraction waveguide that passes input light in a first direction between a polarisation-sensitive reflector and rear guide surface to a lateral anamorphic reflector, and to reflect the light back through the extraction waveguide to output through the front guide surface. Deflection features are arranged on the front side of the polarisation-sensitive reflector to deflect the reflected light towards the pupil of a viewer, maintaining the directionality of the fan of light rays from the SLM and anamorphic imaging system. A thin, transparent and efficient anamorphic display apparatus for Augmented Reality and Virtual Reality displays and for scene illumination is provided.

公开(公告)号：US10070055B2

公开(公告)日：2018-09-04

申请号：US14668214

申请日：2015-03-25

Applicant: MASSACHUSETTS INSTITUTE OF TECHNOLOGY

Inventor： Ralph Hamilton Shepard ,  Yaron Rachlin

IPC: H04N5/775 ,  H04N5/232 ,  G01J3/12 ,  G01J3/28 ,  G02B13/10 ,  G02B27/10 ,  G02B27/12 ,  G02B27/14 ,  G03B35/10 ,  H04N13/02 ,  H04N13/00 ,  G03B37/00

Abstract: Devices and methods for multiplexed imaging are provided. In one embodiment, an imaging device can simultaneously direct light of a same spectrum from each of a plurality of image channels onto an image sensor to create a multiplexed image on the sensor. Each image channel can collect light from different portions of an extended field of view or from the same portion with different perspectives. The device can also include one or more encoders to encode light from the channels prior to detection. The devices and methods described herein can also include disambiguating a captured multiplexed image to create images for each of the plurality of image channels. Disambiguated images can cover the extended field of view at a high spatial resolution despite using only a single small format image sensor, or can produce stereo or 3D images having the full resolution of the sensor.

公开(公告)号：US07920325B2

公开(公告)日：2011-04-05

申请号：US12794910

申请日：2010-06-07

Applicant: Patrick Rene Destain

Inventor： Patrick Rene Destain

IPC: G02B23/24 ,  G02B3/02 ,  G02B13/10

CPC classification number: G02B13/16 ,  G02B26/0833

Abstract: System and method for utilizing two prisms spatially separated is provided. The two prisms spatially separated allows the two prisms typically found in a TIR optical relay system to be spatially separated. In an embodiment, one or more optical relay lenses are interposed between the two prisms. The prism positioned on the object side may be integrated into one or more of the optical relay lenses, thereby further simplifying the optical relay design. In another embodiment, the one or more optical relay lenses may have an optical axis that is offset from the optical axis of incoming light to cause a pupil shift. An aspherical lens may be included to correct for the pupil shift and create a more uniform illumination image.

Abstract translation: 提供了利用空间分离的两个棱镜的系统和方法。 空间分离的两个棱镜允许通常在TIR光中继系统中发现的两个棱镜在空间上分离。 在一个实施例中，一个或多个光学中继透镜插入在两个棱镜之间。 位于物体侧的棱镜可以集成到一个或多个光学中继透镜中，从而进一步简化光学继电器设计。 在另一个实施例中，一个或多个光学中继透镜可以具有偏离入射光的光轴的光轴以引起光瞳偏移。 可以包括非球面透镜以校正光瞳偏移并产生更均匀的照明图像。

公开(公告)号：US07646546B1

公开(公告)日：2010-01-12

申请号：US11451623

申请日：2006-06-12

Applicant: John O'Shaughnessy ,  David E. Hargis ,  Eric B. Takeuchi ,  Marc L. Shaffer

Inventor： John O'Shaughnessy ,  David E. Hargis ,  Eric B. Takeuchi ,  Marc L. Shaffer

IPC: G02B13/10 ,  G02B13/08

CPC classification number: G02B27/0081 ,  G02B19/0014 ,  G02B19/0052 ,  G02B27/0972 ,  G02B27/283 ,  H01S5/005 ,  H01S5/0092 ,  H01S5/0683

Abstract: Apparatus and methods are disclosed for transforming a laser beam to a polarized shaped beam in, for example, a frequency converted laser system. In one embodiment, an anamorphic optical system includes a first prism and a second prism that can be configured to form a Brewster telescope, the first prism and second prism each having an input surface and an exit surface, and wherein at least one surface of the input or exit surfaces are coated with a polarization selective coating. The optical system can include an adjustment system configured to change the position of one or both of the first prism and the second prism to adjust the transformation of the shape of the laser beam. In some embodiments of the optical system, a configuration of the first prism, the second prism, and the polarization selective coating produce a laser beam having a polarization ratio of about 100:1 or higher.

Abstract translation: 公开了用于将激光束变换成例如变频激光系统中的偏振成形光束的装置和方法。 在一个实施例中，变形光学系统包括第一棱镜和第二棱镜，其可以被配置成形成布鲁斯特望远镜，第一棱镜和第二棱镜各自具有输入表面和出射表面，并且其中至少一个表面 输入或出射表面涂覆有偏振选择性涂层。 光学系统可以包括被配置为改变第一棱镜和第二棱镜中的一个或两个的位置以调整激光束的形状的变换的调节系统。 在光学系统的一些实施例中，第一棱镜，第二棱镜和偏振选择性涂层的配置产生具有约100:1或更高的偏振比的激光束。

公开(公告)号：US20090231718A1

公开(公告)日：2009-09-17

申请号：US12414303

申请日：2009-03-30

Applicant: Holger Muenz ,  Alois Herkommer ,  Rafael Egger

Inventor： Holger Muenz ,  Alois Herkommer ,  Rafael Egger

IPC: G02B27/12 ,  G02B13/08 ,  G02B13/10

CPC classification number: G02B27/0927 ,  B23K26/0604 ,  B23K26/0608 ,  B23K26/066 ,  B23K26/067 ,  B23K26/0732 ,  B23K26/0738 ,  G02B27/0966

Abstract: In one aspect, the disclosure features an optical system configured to create from a beam of light an intensity distribution on a surface, whereby the optical system comprises at least a first optical element which splits the incident beam into a plurality of beams some of which at least partially overlap in a first direction on said surface and whereby the optical system further comprises at least a second optical element which displaces at least one of said beams in a second direction on said surface.

Abstract translation: 在一个方面，本公开的特征在于一种光学系统，其被配置为从光束产生表面上的强度分布，由此光学系统包括至少第一光学元件，其将入射光束分成多个光束，其中一些光束 在所述表面上的第一方向上至少部分地重叠，由此所述光学系统还包括至少第二光学元件，所述第二光学元件在所述表面上沿第二方向移位所述光束中的至少一个。

公开(公告)号：US5701203A

公开(公告)日：1997-12-23

申请号：US588722

申请日：1996-01-19

Applicant: Fumio Watanabe

Inventor： Fumio Watanabe

IPC: G02B5/04 ,  G02B13/00 ,  G02B26/06 ,  G02B27/00 ,  G02B13/10

CPC classification number: G02B27/0025 ,  G02B26/06

Abstract: In an image-forming optical system in which an astigmatism may occur, an astigmatism correcting element disposed between an image-forming lens (20) and an image-forming surface (12) in order to correct the astigmatism is constructed such that it can correct the T image surface toward both plus and minus directions with respect to the S image surface, while easily correcting the astigmatism even when there is fluctuation in the generated astigmatism. The astigmatism correcting element comprises a prism unit (22) in which a pair of wedge-like prisms (22a, 22b) having an identical apex angle are oppositely placed in reverse to each other with a predetermined air space (d) therebetween. Also, this prism unit (22) is disposed such that its optical axis (X1) can be tilted with respect to a main ray (X2) of a bundle of rays subjected to astigmatism correction. The angle of inclination of the optical axis (X1) of the prism unit (22) may be appropriately set so as to nullify the astigmatism of the bundle of rays subjected to astigmatism correction or to intentionally provide a desired astigmatism in this bundle of rays, regardless of whether the main ray (X2) in the bundle of rays subjected to astigmatism correction is on the optical axis (X0) of the image-forming optical system or not.

Abstract translation: 在可能发生像散的图像形成光学系统中，为了校正像散而设置在图像形成透镜（20）和图像形成表面（12）之间的像散校正元件被构造成使得其可以校正 T图像表面相对于S图像表面朝向正和负方向，同时即使当产生的散光波动时也容易地校正像散。 像散校正元件包括棱镜单元（22），其中具有相同顶角的一对楔形棱镜（22a，22b）在其间具有预定的空间（d）相反地相对放置。 此外，该棱镜单元（22）被配置为使得其光轴（X1）能够相对于进行散光校正的光束的主光线（X2）倾斜。 棱镜单元（22）的光轴（X1）的倾斜角度可以适当设定，以消除经受散光校正的光束的散光，或有意地在该光束中提供期望的像散， 不管经受散光校正的光束中的主射线（X2）是否在成像光学系统的光轴（X0）上。

公开(公告)号：US5343332A

公开(公告)日：1994-08-30

申请号：US45703

申请日：1993-04-14

Applicant: Masahiro Oono ,  Koichi Maruyama ,  Makoto Iki ,  Hitoshi Kimura ,  Masahiko Sasaki

Inventor： Masahiro Oono ,  Koichi Maruyama ,  Makoto Iki ,  Hitoshi Kimura ,  Masahiko Sasaki

IPC: G02B7/18 ,  G02B26/08 ,  G02B27/09 ,  G11B7/135 ,  G11B7/22 ,  G02B5/04 ,  G02B13/10

CPC classification number: G02B19/0009 ,  G02B19/0052 ,  G02B26/0883 ,  G02B27/09 ,  G02B27/0972 ,  G02B7/1805 ,  G11B7/1398 ,  G11B7/22

Abstract: An optical axis adjusting apparatus is provided and includes a laser beam source, a beam shaping prism for shaping a laser beam of elliptical flux emitted from the laser beam source into a laser beam of circular flux, and an angle adjusting device which adjusts the angular direction of the outgoing laser beam emitted from the shaping prism.

Abstract translation: 提供了一种光轴调节装置，包括激光束源，用于将从激光束源发射的椭圆形激光束的激光束成形为圆形通量的激光束的光束整形棱镜，以及调整角度方向的角度调整装置 从成形棱镜发出的输出激光束。

公开(公告)号：US5202869A

公开(公告)日：1993-04-13

申请号：US705802

申请日：1991-05-28

Applicant: Takahiro Miyake ,  Yoshio Yoshida ,  Yukio Kurata

Inventor： Takahiro Miyake ,  Yoshio Yoshida ,  Yukio Kurata

IPC: G02B13/10 ,  G02B27/09 ,  G11B7/09 ,  G11B7/13 ,  G11B7/135

CPC classification number: G02B13/10 ,  G02B19/0014 ,  G02B19/0052 ,  G02B27/09 ,  G02B27/0972 ,  G11B7/0916 ,  G11B7/094 ,  G11B7/131 ,  G11B7/1353 ,  G11B7/1359 ,  G11B7/1381 ,  G11B7/1398

Abstract: An optical head device having an optical system provided with at least a light source, a shaping prism, a diffracting element and a photodetector. The light source emits light whose cross-sectional intensity distribution has an elliptic shape. The shaping prism directs the light to a recording medium after shaping the intensity distribution thereof into a circular shape. The diffracting element has diffracting regions formed by at least one division line parallel to a reference direction. The light reflected from the recording medium forms an elliptic bright portion on the diffracting element. The photodetector is divided by a plurality of division lines, at least one of which is parallel to the reference direction. When there is no focus error, the diffracting element diffracts the reflected light so as to converge it on the division line substantially parallel to the reference direction in the photodetector. For example, when the shaping prism is adapted to shape the elliptic intensity distribution with respect to its major axis direction, the optical system is arranged so that the major axis of the bright portion coincides with the division line of the diffracting element. Thus, it is possible to obtain preferable focusing control.

Abstract translation: 一种具有至少设置有光源的光学系统，成像棱镜，衍射元件和光电检测器的光学头装置。 光源发出横截面强度分布为椭圆形的光。 成形棱镜将其强度分布成形为圆形后将光引导到记录介质。 衍射元件具有由与基准方向平行的至少一个分割线形成的衍射区域。 从记录介质反射的光在衍射元件上形成椭圆形亮部。 光电检测器由多条分割线分开，其中至少一条与基准方向平行。 当不存在聚焦误差时，衍射元件将反射光衍射，使其在基本上平行于光检测器中的基准方向的分割线上会聚。 例如，当成形棱镜适于相对于其长轴方向成形椭圆强度分布时，光学系统被布置成使得亮部的长轴与衍射元件的分割线重合。 因此，可以获得优选的聚焦控制。

公开(公告)号：US5173890A

公开(公告)日：1992-12-22

申请号：US687478

申请日：1991-04-18

Applicant: Takahiro Miyake ,  Yoshio Yoshida ,  Yukio Kurata

Inventor： Takahiro Miyake ,  Yoshio Yoshida ,  Yukio Kurata

IPC: G02B7/28 ,  G02B13/10 ,  G02B27/09 ,  G11B7/09 ,  G11B7/125 ,  G11B7/135

CPC classification number: G02B27/0972 ,  G02B13/10 ,  G02B19/0028 ,  G02B19/0052 ,  G02B19/0085 ,  G02B27/09 ,  G11B7/0916 ,  G11B7/094 ,  G11B7/1353 ,  G11B7/1359 ,  G11B7/1398

Abstract: An optical pickup device having an optical system provided with at least a light source, a shaping prism, a diffracting element and a photodetector. The light source projects light whose intensity distribution has an elliptical shape in its cross section orthogonal to the optical axis. The shaping prism directs the light to a recording medium after shaping the intensity distribution thereof into a circular shape. The diffracting element has diffraction regions formed by at least one division line substantially parallel to a reference direction. The light reflected from the recording medium forms an elliptical bright portion on the diffracting element. The photodetector is divided by a plurality of division lines, at least one of which is substantially parallel to the reference direction. The diffracting element diffracts the reflected light so as to converge it on the photodetector. Have, a hypothetical line extending from a projecting point of the light source through the center of a light-receiving face of the photodetector is also set to be parallel to the reference direction. For example, when the shaping prism is to shape the intensity distribution having the elliptical shape with respect to its minor axis direction, the optical system is arranged so that the minor axis of the bright portion is parallel to the division line of the diffracting element. Thus, it is possible to always obtain an accurate focusing control signal.

公开(公告)号：US4929067A

公开(公告)日：1990-05-29

申请号：US292720

申请日：1989-01-03

Applicant: Ingolf Sander

Inventor： Ingolf Sander

IPC: G02B13/08 ,  G02B13/10 ,  G11B7/135

CPC classification number: G02B13/08 ,  G02B13/10 ,  G11B7/1359 ,  G11B7/1398

Abstract: A method and apparatus for anamorphically shaping a beam of radiation and for deflecting such beam by 90.degree.. The apparatus consists of a prism having at least four faces, two of such faces being parallel. The prism is arranged to receive a beam at the Brewster angle .THETA..sub.B, and is adapted to deflect the beam by 90.degree. by refraction and double internal reflection. The prism faces define four internal angles of .THETA..sub.B, 90.degree.+.THETA..sub.B, 90.degree.-.THETA..sub.B and 180.degree.-.THETA..sub.B.

Abstract translation: 一种用于对辐射束进行变形成形并将这种光束偏转90°的方法和装置。 该装置由具有至少四个面的棱镜组成，其中两个面平行。 棱镜布置成以布鲁斯特角度THETA B接收光束，并且通过折射和双内反射将光束偏转90度。 棱镜面定义了THETA B，90°+ THETA B，90° - THETA B和180° - THETA B的四个内角。