Yufeng C Wang

US Patent:

7652023, Jan 26, 2010

Filed:

Nov 16, 2006

Appl. No.:

11/560388

Inventors:

Yufeng Wang - North Brunswick NJ, US
Wu Yang - Princeton Junction NJ, US

Assignee:

Bristol-Myers Squibb Company - Princeton NJ

International Classification:

A61K 31/506
A61K 31/4745
A61K 31/4439
C07D 403/02

US Classification:

514275, 514337, 514338, 514340, 514370, 514336, 544331, 5462684, 5462727, 5462681, 5462697, 548190, 548202

Abstract:

Compounds of formula Ia and Ib.

US Patent:

20220381585, Dec 1, 2022

Filed:

May 21, 2021

Appl. No.:

17/327612

Inventors:

- Beijing, CN
Yufeng WANG - Mountain View CA, US

Assignee:

BEIJING VOYAGER TECHNOLOGY CO., LTD. - Beijing

International Classification:

G01D 5/14
G01R 33/07

Abstract:

Embodiments of the disclosure provide magnetic sensing systems and methods for a galvanometer scanner configured to rotate within a predetermined angular range. An exemplary magnetic sensing system includes a disc permanent magnet configured to provide a magnetic field. The magnetic sensing system further includes a Hall sensor configured to generate a voltage proportional to the strength of the magnetic field as the Hall sensor and the disc permanent magnet move relatively to each other when the galvanometer scanner rotates. One of the disc permanent magnet and the Hall sensor locates on and rotates with the galvanometer scanner and the other locates off the galvanometer scanner. The magnetic sensing system also includes at least one controller configured to determine a rotation angle of the galvanometer scanner based on the generated voltage by the Hall Sensor.

US Patent:

20220342076, Oct 27, 2022

Filed:

Apr 22, 2021

Appl. No.:

17/238071

Inventors:

- Beijing, CN
Yufeng WANG - Mountain View CA, US

Assignee:

BEIJING VOYAGER TECHNOLOGY CO., LTD. - Beijing

International Classification:

G01S 17/931
G01S 7/481
G01S 7/484
G02B 26/12

Abstract:

Embodiments of the disclosure provide magnetic sensing systems and methods for a polygon scanner. An exemplary magnetic sensing system includes a disc permanent magnet configured to provide a magnetic field. The magnetic sensing system further includes a Hall sensor configured to generate a voltage proportional to the strength of the magnetic field as the Hall sensor and the disc permanent magnet move relatively to each other when the polygon mirror rotates. One of the disc permanent magnet and the Hall sensor locates on and rotates with the polygon mirror and the other locates off the polygon mirror. The magnetic sensing system also includes at least one controller configured to determine a rotation angle of the polygon mirror based on the generated voltage by the Hall Sensor.

US Patent:

20220324704, Oct 13, 2022

Filed:

Apr 8, 2021

Appl. No.:

17/226071

Inventors:

- Beijing, CN
Yufeng Wang - Mountain View CA, US
Qin Zhou - Mountain View CA, US
Gary Li - Mountain View CA, US

Assignee:

BEIJING VOYAGER TECHNOLOGY CO., LTD. - Beijing

International Classification:

B81C 99/00
G01S 7/481
G02B 26/08

Abstract:

Embodiments of the disclosure provide a method for designing an optical scanning mirror. The method may include receiving an initial set of design parameters for the scanning mirror assembly. The method may also include simulating first scanning mirror oscillation based on the initial set of design parameters to compute an initial non-linear spring constant associated with at least one spring of the scanning mirror assembly. The method may further include adjusting the set of design parameters for the scanning mirror assembly based on a comparison between the initial non-linear spring constant and a target non-linear spring constant. The method may also include outputting the at least one structural alteration to be implemented on the at least one spring. In certain aspects, the initial set of design parameters and the adjusted set of design parameters may be associated with a same mirror oscillation frequency and linear spring constant.

US Patent:

20220326511, Oct 13, 2022

Filed:

Apr 9, 2021

Appl. No.:

17/226667

Inventors:

- Beijing, CN
Yufeng Wang - Mountain View CA, US
Qin Zhou - Mountain View CA, US
Gary Li - Mountain View CA, US

Assignee:

BEIJING VOYAGER TECHNOLOGY CO., LTD. - Beijing

International Classification:

G02B 26/10
G01S 17/08
G01S 7/481

Abstract:

Embodiments of the disclosure provide a scanning mirror assembly for an optical sensing system. The scanning mirror assembly may include a scanning mirror configured to rotate around an axis of rotation. The scanning mirror assembly may further include a plurality of torsion springs coupled to at least one side of the scanning mirror along the axis of rotation. In certain aspects, the plurality of torsion springs may collectively have a non-linear spring constant and a linear spring constant. In certain other aspects, a ratio of the non-linear spring constant over the linear spring constant may meet a predetermined threshold.

US Patent:

20220282965, Sep 8, 2022

Filed:

Mar 4, 2021

Appl. No.:

17/192697

Inventors:

- Beijing, CN
Yufeng Wang - Mountain View CA, US

Assignee:

BEIJING VOYAGER TECHNOLOGY CO., LTD. - Beijing

International Classification:

G01B 7/30
G01S 7/481
G01S 17/08
G02B 26/10
G02B 26/08

Abstract:

Embodiments of the disclosure provide magnetic sensing systems and methods for a scanning mirror. An exemplary magnetic sensing system includes a permanent magnet configured to provide a magnetic field. The magnetic sensing system further includes a wire coil configured to rotate relative to the permanent magnet when the scanning mirror rotates, causing an induced voltage in the wire coil. One of the permanent magnet and the wire coil locates on and rotates with the scanning mirror and the other locates off the scanning mirror. The magnetic sensing system also includes at least one controller configured to determine a rotation angle of the scanning mirror based on the induced voltage in the wire coil.

US Patent:

20220284139, Sep 8, 2022

Filed:

Mar 4, 2021

Appl. No.:

17/192724

Inventors:

- Beijing, CN
Yufeng Wang - Mountain View CA, US
Gary Li - Mountain View CA, US

Assignee:

BEIJING VOYAGER TECHNOLOGY CO., LTD. - Beijing

International Classification:

G06F 30/10

Abstract:

Embodiments of the disclosure provide a method for designing an optical scanning mirror. The method may include receiving, by a communication interface, a set of design parameters of the scanning mirror. The method may also include simulating scanning mirror oscillation, by at least one processor, based on the set of design parameters using a computer model. In certain aspects, the computer model may include a lookup table that correlates electrostatic force applied to a sample scanning mirror and angular displacement in the sample scanning mirror caused by the electrostatic force. The method may further include generating, by the at least one processor, mirror oscillation data as an output of the computer model for designing the scanning mirror. The mirror oscillation data may include a correlation of drive frequency, angular displacement, and time.

US Patent:

20220252867, Aug 11, 2022

Filed:

Feb 9, 2021

Appl. No.:

17/172047

Inventors:

- Beijing, CN
Yufeng Wang - Mountain View CA, US
Gary Li - Mountain View CA, US

Assignee:

BEIJING VOYAGER TECHNOLOGY CO., LTD. - Beijing

International Classification:

G02B 26/10
G02B 26/08
G01S 7/481

Abstract:

Embodiments of the disclosure provide a scanner for steering optical beams. In certain configurations, the scanner may include a scanning mirror independently rotatable around a first axis and a second axis. In certain other configurations, the scanner may also include a first driver configured to drive the scanning mirror to rotate around the first axis. In still other configurations, the scanner may further include a second driver configured to drive the scanning mirror to simultaneously rotate around the second axis. In certain aspects, the first driver and the second driver may be different types of drivers.