Light emitter and light detector modules including vertical alignment features

Abstract

This disclosure describes various modules that can provide ultra-precise and stable packaging for an optoelectronic device such as a light emitter or light detector. The modules include vertical alignment features that can be machined, as needed, during fabrication of the modules, to establish a precise distance between the optoelectronic device and an optical element or optical assembly disposed over the optoelectronic device.

Description

technical field [0001] The present disclosure relates to light emitter and light detector modules. Background technique [0002] Various consumer electronics and other devices include packaged light emitter modules designed for precision light projection applications. It is often necessary to control the spatial dimensions of such modules with high precision in order to precisely position the optical elements and light emitting elements at eg optimal distances. Therefore, to achieve optimal performance, the modules should have very small spatial (dimensional) and optical (eg focal length) tolerances. However, factors such as the use of adhesives in the packaged light emitter modules and other factors such as inherent manufacturing tolerances of associated support structures often exaggerate module tolerances to unacceptable levels. The above issues are also applicable to photodetector modules. [0003] For certain applications, the optical transmitter module needs to oper...

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Problems solved by technology

The latter change may induce a change in focal length, resulting in poor performance of the optical transmitter module

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