Feng S Zhao

US Patent:

20220302679, Sep 22, 2022

Filed:

Apr 16, 2020

Appl. No.:

17/603909

Inventors:

- Singapore, SG
Qing Wang - Plainsboro NJ, US
Feng Zhao - Lancaster NY, US

International Classification:

H01S 5/183
H01S 5/026

Abstract:

A vertical cavity surface emitting laser (VCSEL) device comprises an interior light generating region, an exterior light emitting surface, and a spatial modulation region monolithically integrated with the interior light generating region so that the spatial modulation region is located between the interior light generating region and the exterior light emitting surface. The spatial modulation region is configured to shape the light generated by the interior light generating region before the generated light is emitted from the exterior light emitting surface. The VCSEL device may be configured to emit a beam of light along a predetermined direction, to emit a beam of light having a predetermined beam divergence, and/or to emit a beam of light having a predetermined shape or structure transverse to a direction of propagation so that the beam of light forms a predetermined spot or pattern of light when projected onto a surface. A plurality of VCSEL devices and a method for use in manufacturing a VCSEL device are also disclosed.

US Patent:

20190353556, Nov 21, 2019

Filed:

May 22, 2017

Appl. No.:

16/300997

Inventors:

- Depew NY, US
Feng ZHAO - Lancaster NY, US

International Classification:

G01M 11/02

Abstract:

A mapping lensmeter is characterized by a macro-imaging system configured to detect a macro-image of the lens. The macro-image of the lens may be superimposed with a map of the lens indicating local refractive power at various zones of the lens to form a composite image of the lens. The composite image may include a pupil marking made on the lens.