公开(公告)号：US20190196201A1

公开(公告)日：2019-06-27

申请号：US16231282

申请日：2018-12-21

Applicant: NORTH INC.

Inventor： Jörg Pierer ,  Rony Jose James ,  Stefan Mohrdiek ,  Martin Joseph Kiik ,  Syed Moez Haque ,  Douglas Raymond Dykaar

IPC: G02B27/01 ,  H01S5/022 ,  G02B6/12 ,  H01S5/40 ,  G02B6/124 ,  G02B27/42

CPC classification number: G02B27/0172 ,  G02B6/12004 ,  G02B6/124 ,  G02B27/4205 ,  G02B2006/12069 ,  G02B2006/12107 ,  G02B2006/12147 ,  G02B2006/12164 ,  G02B2027/011 ,  G02B2027/0116 ,  G02B2027/0178 ,  H01S5/02208 ,  H01S5/02248 ,  H01S5/02272 ,  H01S5/02288 ,  H01S5/02296 ,  H01S5/4012 ,  H01S5/4031 ,  H01S5/4093 ,  H01S5/423

Abstract: Systems, devices, and methods of manufacturing optical engines and laser projectors that are well-suited for use in wearable heads-up displays (WHUDs) are described. Generally, the optical engines of the present disclosure integrate a plurality of laser diodes (e.g., 3 laser diodes, 4 laser diodes) within a single, hermetically or partially hermetically sealed, encapsulated package. Photonic integrated circuits having grating or edge couplers thereon may be used to wavelength multiplex beams of light emitted by the plurality of laser diodes into a coaxially superimposed aggregate beam. A waveguide medium having one or more directly written waveguides may couple light from laser diodes to a photonic integrated circuit, and may optionally hermetically or partially hermetically seal the laser diodes, eliminating the need for a separate seal. Such optical engines may have advantages over existing designs including, for example, smaller volumes, better manufacturability, faster modulation speed, etc. WHUDs that employ such optical engines and laser projectors are also described.

公开(公告)号：US20180284442A1

公开(公告)日：2018-10-04

申请号：US15919420

申请日：2018-03-13

Applicant: Misato ABE

Inventor： Misato ABE

IPC: G02B27/01 ,  H01S5/042 ,  H04N9/31

CPC classification number: H01S5/0261 ,  G02B27/0172 ,  G02B2027/0118 ,  G02B2027/0147 ,  G02B2027/0178 ,  H01S5/042 ,  H01S5/0427 ,  H01S5/06825 ,  H01S5/06832 ,  H01S5/4093 ,  H04N9/3129 ,  H04N9/3135 ,  H04N9/3155 ,  H04N9/3161 ,  H04N9/3164 ,  H04N9/3182

Abstract: A display apparatus is provided. The display apparatus is a retinal scanning type display apparatus, and includes a low output laser whose operational current is less than that of a standard output laser; a shunting element that is connected in parallel with the low output laser; and a drive circuit that supplies a current to the low output laser and the shunting element. The drive circuit is a drive circuit for the standard output laser capable of adjusting a current value on a discrete basis in a range of an operational current that is higher than the operational current of the low output laser.

公开(公告)号：US20180281678A1

公开(公告)日：2018-10-04

申请号：US15945275

申请日：2018-04-04

Applicant: Stanley Electric Co., Ltd.

Inventor： Shinya Kogure

IPC: B60Q11/00 ,  F21S41/64 ,  F21S41/20 ,  F21S41/135 ,  F21S41/30 ,  F21S41/675

CPC classification number: B60Q11/005 ,  F21S41/135 ,  F21S41/14 ,  F21S41/16 ,  F21S41/285 ,  F21S41/30 ,  F21S41/645 ,  F21S41/675 ,  F21Y2115/30 ,  H01S5/005 ,  H01S5/06825 ,  H01S5/32341 ,  H01S5/4012 ,  H01S5/4093

Abstract: An optical source unit includes a first optical source for emitting a P-polarized light beam, a first detector for detecting whether the first optical source is normal or abnormal, a second optical source for emitting an S-polarized light beam, a second detector for detecting whether the second optical source is normal or abnormal, and a light beam combining section including a polarization beam splitter for transmitting the P-polarized light beam and reflecting the S-polarized light beam to combine the P-polarized light beam and the S-polarized light beam into an output light beam of the optical source unit.

公开(公告)号：US10020639B2

公开(公告)日：2018-07-10

申请号：US15606500

申请日：2017-05-26

Applicant: OSRAM OPTO SEMICONDUCTORS GMBH

Inventor： Alfred Lell ,  Martin Strassburg

IPC: H01S5/00 ,  H01S5/40 ,  H01S5/026 ,  H01S5/343 ,  H01S5/022 ,  H01S5/042 ,  H01S5/20 ,  H01S5/30 ,  H01S5/323

CPC classification number: H01S5/4043 ,  H01S5/0224 ,  H01S5/026 ,  H01S5/0425 ,  H01S5/2059 ,  H01S5/3013 ,  H01S5/3095 ,  H01S5/323 ,  H01S5/32341 ,  H01S5/34313 ,  H01S5/405 ,  H01S5/4087 ,  H01S5/4093 ,  H01S2301/173

Abstract: A laser diode arrangement comprising: at least one semiconductor substrate; at least two laser stacks based on the AlInGaN material system, each laser stack having an active zone, wherein at least one of the at least two laser stacks comprises a two-dimensional structure of laser diodes; and at least one intermediate layer. The laser stacks and the intermediate layer are grown monolithically on the semiconductor substrate. The intermediate layer is arranged between the laser stacks. The active zone of the first laser stack can be actuated separately from the active zone of the at least one further laser stack.

公开(公告)号：US20180107102A1

公开(公告)日：2018-04-19

申请号：US15837259

申请日：2017-12-11

Applicant: THALMIC LABS INC.

Inventor： Lloyd Frederick Holland ,  Vance R. Morrison

IPC: G03B21/20 ,  G02B27/01 ,  G02B27/14 ,  G02B27/30 ,  H01S5/40 ,  H01S5/00 ,  G02B26/10 ,  G02C11/00 ,  H01S5/02 ,  H01S5/022

CPC classification number: G03B21/2033 ,  G02B26/10 ,  G02B27/0172 ,  G02B27/106 ,  G02B27/14 ,  G02B27/146 ,  G02B27/30 ,  G02B2027/0174 ,  G02B2027/0178 ,  G02C11/10 ,  G03B21/62 ,  H01S5/005 ,  H01S5/0071 ,  H01S5/02 ,  H01S5/02212 ,  H01S5/4012 ,  H01S5/4087 ,  H01S5/4093

Abstract: Systems, devices, and methods for focusing laser projectors are described. A laser projector includes N≥1 laser diodes, each of which emits laser light having a divergence. Each laser diode is paired with a respective primary or collimation lens to at least reduce a divergence of the laser light that the laser diode produces. Downstream from the primary lens(es) in the optical path(s) of the laser light, a single dedicated secondary or convergence lens converges the laser light to a focus. By initiating the convergence of the laser light at the secondary or convergence lens as opposed to at the primary or collimation lens(es), numerous benefits that are particularly advantageous in laser projection-based wearable heads-up displays are realized.

公开(公告)号：US20180024303A1

公开(公告)日：2018-01-25

申请号：US15546415

申请日：2016-02-25

Applicant: Sumitomo Electric Industries, Ltd.

Inventor： Hiromi Nakanishi

IPC: G02B6/42 ,  H01S5/40 ,  G02B27/09 ,  H01S5/022 ,  H01S5/00

CPC classification number: G02B6/424 ,  G02B6/4206 ,  G02B6/4215 ,  G02B6/4237 ,  G02B6/4251 ,  G02B6/4271 ,  G02B6/4285 ,  G02B27/0916 ,  G02B27/0955 ,  H01S5/005 ,  H01S5/02216 ,  H01S5/02248 ,  H01S5/02284 ,  H01S5/02296 ,  H01S5/4012 ,  H01S5/4093

Abstract: An optical module includes a light-forming part; a protective member and including an output window and disposed so as to surround the light-forming part; an adapter connected to the protective member and including an optical passage through which light emitted from the light-forming part and transmitted by the output window passes; and an optical coupling component that is connected to the adapter and that light passing through the optical passage enters. The light-forming part includes semiconductor light-emitting devices and lenses configured to convert, in terms of spot size, light emitted from the semiconductor light-emitting devices. The optical coupling component includes an optical component and a support member supporting the optical component. The support member and the adapter are connected together.

公开(公告)号：US20180010763A1

公开(公告)日：2018-01-11

申请号：US15644293

申请日：2017-07-07

Applicant: Sumitomo Electric Industries, Ltd.

Inventor： Takashi Kyono ,  Hiromi Nakanishi ,  Hideyuki Ijiri ,  Kaoru Shibata

IPC: F21V3/02 ,  F21V15/01 ,  F21V17/10

CPC classification number: F21V3/02 ,  F21V15/01 ,  F21V17/101 ,  F21Y2115/30 ,  H01S5/02216 ,  H01S5/02248 ,  H01S5/02296 ,  H01S5/4012 ,  H01S5/4093

Abstract: An optical module includes a transmitting member. The transmitting member is fixed to a cap member so as to cover a through-hole. On the assumption that the height of one point on a first surface in a state in which the transmitting member is detached from the cap member is zero and the direction toward the outside of the optical module is a positive direction, the amount of warp that is a difference between the displacement at the central point and the displacement at a standard point, on the first surface, corresponding to a reference point, on the projection image, away from a center of gravity by a particular distance is different between a first geodesic line and a second geodesic line, the displacement being a height of the one point in a direction of the optical axis in a state in which the transmitting member is fixed to the cap member. The transmitting member is joined to the cap member at the first surface or the second surface.

公开(公告)号：US09791711B2

公开(公告)日：2017-10-17

申请号：US13811476

申请日：2011-07-11

Applicant: Ken Nishioka ,  Kenji Nagashima ,  Atsuya Hirano ,  Atsuhiko Chikaoka

Inventor： Ken Nishioka ,  Kenji Nagashima ,  Atsuya Hirano ,  Atsuhiko Chikaoka

IPC: G02B27/48 ,  G03B21/20 ,  G03B33/06 ,  G03B33/12 ,  H04N9/31 ,  G09G3/02 ,  H01S5/00 ,  H01S5/40

CPC classification number: G02B27/48 ,  G03B21/2033 ,  G03B33/06 ,  G03B33/12 ,  G09G3/02 ,  G09G2360/145 ,  H01S5/005 ,  H01S5/4093 ,  H04N9/3129 ,  H04N9/3167

Abstract: To prevent effectively the flickering of an image due to the switching of a polarization direction while reducing speckle noise. A polarization switching unit is provided in an optical path of laser light to a projection surface A and periodically switches a polarization direction of the laser light emitted therefrom between p and S polarization. A laser control unit controls laser light sources in synchronization with the switching by the polarization switching unit and determines a driving current corresponding to a grayscale to be displayed on the basis of driving current characteristics for P polarization when the polarization direction of the laser light is the P polarization. In addition, the laser control unit determines the driving current corresponding to the grayscale to be displayed on the basis of the driving current characteristics for P polarization when the polarization direction of the laser light is the S polarization.

公开(公告)号：US20170290131A1

公开(公告)日：2017-10-05

申请号：US15472626

申请日：2017-03-29

Applicant: Funai Electric Co., Ltd.

Inventor： Tatsuya ITO

IPC: H05B37/02 ,  B60K35/00 ,  G02B27/01 ,  G02B26/08 ,  H01S5/40 ,  H01S5/00

CPC classification number: H05B37/0227 ,  B60K35/00 ,  B60K2370/155 ,  B60K2370/27 ,  B60K2370/31 ,  B60K2370/334 ,  B60K2370/349 ,  B60K2370/77 ,  G02B5/30 ,  G02B26/0833 ,  G02B27/01 ,  G02B27/0101 ,  G02B2027/0118 ,  H01S5/005 ,  H01S5/4012 ,  H01S5/4093 ,  H04N9/3129 ,  H04N9/3155 ,  H04N9/3167

Abstract: A projection device comprises a light source, a first attenuator and a second attenuator, a first driver, a second driver, a light receiving element, and a controller. The light source emits light. The first attenuator and the second attenuator attenuate intensity of the light from the light source. The first driver drives the first attenuator. The second driver drives the second attenuator. The light receiving element receives the light distributed by the second attenuator. The controller controls the second driver to control the distribution ratio of the light distributed to the light receiving element by the second attenuator according to control of transmissivity of light at the first attenuator by the first driver.

公开(公告)号：US20170276546A1

公开(公告)日：2017-09-28

申请号：US15454223

申请日：2017-03-09

Applicant: Kohji SAKAI ,  Kazuhiro Akatsu

Inventor： Kohji SAKAI ,  Kazuhiro Akatsu

IPC: G01J3/50 ,  G01J3/10 ,  G01J3/02

CPC classification number: G01J3/50 ,  G01J3/0264 ,  G01J3/0286 ,  G01J3/10 ,  G01J3/505 ,  G01J3/506 ,  G01J2003/467 ,  H01S5/0035 ,  H01S5/0617 ,  H01S5/06804 ,  H01S5/06832 ,  H01S5/4012 ,  H01S5/4093 ,  H04N9/3129 ,  H04N9/3144 ,  H04N9/3155 ,  H04N9/3164 ,  H04N9/3182 ,  H04N9/3194 ,  H05B33/0869

Abstract: A wavelength estimation device including a light detector to receive light emitted from a light source and an estimation unit. The estimation unit estimates a wavelength of the light based on an amount of light received by the light detector.