VCSEL array, manufacturing method thereof, flat-top far-field generation method and lighting module

An array, flat-top technology, applied in the field of vertical cavity surface emitting laser (VCSEL), can solve the problem that the thickness and volume of mobile phones and other equipment are difficult to further reduce, and achieve the effect of reducing module cost and uniform flat-top far field

Active Publication Date: 2020-01-03
VERTILITE CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The above-mentioned existing module structure, due to the arrangement of optical devices such as diffusers, on the one hand has extremely strict requirements on the precision of assembly between the components, which increases the complexity of the structure and production process, and at the same time for Supporting this optical system also require...

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  • VCSEL array, manufacturing method thereof, flat-top far-field generation method and lighting module
  • VCSEL array, manufacturing method thereof, flat-top far-field generation method and lighting module
  • VCSEL array, manufacturing method thereof, flat-top far-field generation method and lighting module

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Embodiment Construction

[0065] The technical solutions in the embodiments of the present invention are clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0066] attached figure 2 , 7 - The purpose of the optical field distribution imaging and waveform schematic diagrams in 8 and 12 is to reflect the effect achieved by the solution of the present invention and the comparison with the prior art, and the specific coordinate values ​​are not the key points to be presented.

[0067] The present invention provides a lensless VCSEL array that does not require a diffuser, and the array includes:

[0068] A p...

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Abstract

The invention provides a VCSEL array, a manufacturing method thereof, a flat-top far-field generation method and a lighting module. Compared with a traditional VCSEL array, the VCSEL array of the invention can easily achieve a uniform flat-topped far field without arranging optical elements such as a diffuser, so that the cost of the array and the corresponding module is remarkably reduced while the requirements of TOF measurement and the like are well met. The elimination of the diffuser makes a corresponding sidewall column, a diffuser cover and other components omitted, so the thickness ofthe module is obviously reduced, and the module has multiple advantages which do not exist in the prior art.

Description

technical field [0001] The invention relates to the technical field of vertical cavity surface emitting lasers (VCSEL), in particular to a lensless VCSEL unit and a corresponding illumination field generation method. Background technique [0002] At present, in many smart devices such as smart phones, there is a huge market demand for flat-top infrared illumination (IR) projection modules, which play a vital role in specific applications such as TOF measurement and security camera equipment. The vertical cavity surface emitting laser (VCSEL) is the core device in the flat-top infrared illumination projection module. [0003] Existing flat-top infrared lighting projection modules generally include a combination of VCSEL arrays and optical devices such as diffusers in structure. The emission hole of a typical VCSEL array is usually rectangular or circular, and the spatial light distribution (far field) is usually Gaussian or circular. This kind of far field is non-uniform and...

Claims

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Application Information

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IPC IPC(8): H01S5/40H01S5/42G03B21/20
CPCG03B21/2013G03B21/2033H01S5/4025H01S5/423
Inventor 梁栋张成
Owner VERTILITE CO LTD
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