公开(公告)号：US11933969B2

公开(公告)日：2024-03-19

申请号：US17333125

申请日：2021-05-28

申请人： MEGA1 COMPANY LTD.

发明人： Makoto Masuda ,  Han-Chiang Wu ,  Shan-Ling Yeh ,  Tzu-Chieh Lien

IPC分类号： G02B26/08 ,  G02B26/10 ,  G02B27/09 ,  G02B27/10

CPC分类号： G02B26/101 ,  G02B26/0833 ,  G02B27/0955 ,  G02B27/108

摘要： An optical engine module including at least two laser sources, collimators, a light combining lens group, an aperture, a beam shaping lens group, a MEMS scanning module, and a beam expansion lens group is provided. The at least two laser sources respectively generate at least two laser beams with different wavelengths. The collimators respectively collimate the at least two laser beams to generate at least two collimated beams. The light combining lens group combines the at least two collimated beams into a combined beam. The aperture filters stray beams of the combined beam. The beam shaping lens group shapes the combined beam to generate a shaped beam with a perfect circle. The MEMS scanning module reflects the shaped beam and scans in horizontal and vertical directions to form a scanning beam. The beam expansion lens group expands the scanning beam into an expanded beam having a predetermined area.

公开(公告)号：US11640067B2

公开(公告)日：2023-05-02

申请号：US17547426

申请日：2021-12-10

申请人： MEGA1 COMPANY LTD.

发明人： Makoto Masuda ,  Han-Chiang Wu

IPC分类号： G02B27/10 ,  F21V17/10 ,  F21V5/00 ,  G03B21/20 ,  G02B19/00 ,  G02B27/09 ,  F21Y113/10 ,  F21Y115/30

摘要： A laser projecting device and a light-combining lens are provided. The light-combining lens is a one-piece structure, and has a difference of refractive indexes less than 0.2. The light-combining lens includes collimation surfaces, reflection surfaces, and a light emergent surface. Each collimation surface defines a collimation path inside the light-combining lens. The reflection surfaces respectively located at the collimation paths are parallel to each other and arranged along an arrangement direction. The light emergent surface is located at the arrangement direction. Each reflection surface and the corresponding collimation path have an acute angle therebetween to define a reflection path. The reflection paths are overlapped in the light-combining lens to define a light-combining path. The light combining path passes through at least one of the reflection surfaces that allows light to pass therethrough along the light-combining path, and passes through the light-combining lens from the light emergent surface.

公开(公告)号：US11460703B2

公开(公告)日：2022-10-04

申请号：US17004242

申请日：2020-08-27

申请人： MEGA1 COMPANY LTD.

发明人： Makoto Masuda ,  Han-Chiang Wu

IPC分类号： G02B27/01 ,  G02B26/08

摘要： A laser optical projection module and a wearable device are provided. The laser optical projection module includes a laser beam scanning device, a first optical lens assembly on a side of the laser beam scanning device, and a microlens array. The laser beam scanning device has a laser light source and a micro-electro-mechanical micromirror. A laser beam emitted from the laser light source is reflected and projected by the swinging micro-electro-mechanical micromirror. Light spots of the laser beam emitted from the laser beam scanning device are reduced by the first optical lens assembly, and a pitch between the light spots is decreased. The microlens array having microlenses is configured on a side of the first optical lens assembly and on a projecting direction of the laser beam. A uniform imaging image formed by uniform and parallel imaging lights is obtained after the laser beam passes through the microlenses.

公开(公告)号：US11237401B2

公开(公告)日：2022-02-01

申请号：US17004283

申请日：2020-08-27

申请人： MEGA1 COMPANY LTD.

发明人： Makoto Masuda ,  Han-Chiang Wu

IPC分类号： F21V17/10 ,  F21V5/00 ,  G02B27/10 ,  G03B21/20 ,  G02B19/00 ,  G02B27/09 ,  F21Y113/10 ,  F21Y115/30

摘要： A laser projecting device and a light-combining lens are provided. The light-combining lens is a one-piece structure, and has a difference of refractive indexes less than 0.2. The light-combining lens includes collimation surfaces, reflection surfaces, and a light emergent surface. Each collimation surface defines a collimation path inside the light-combining lens. The reflection surfaces respectively located at the collimation paths are parallel to each other and arranged along an arrangement direction. The light emergent surface is located at the arrangement direction. Each reflection surface and the corresponding collimation path have an acute angle therebetween to define a reflection path. The reflection paths are overlapped in the light-combining lens to define a light-combining path. The light combining path passes through at least one of the reflection surfaces that allows light to pass therethrough along the light-combining path, and passes through the light-combining lens from the light emergent surface.