Detection method and optical device applying the same

Abstract

The invention discloses a detection method and an optical device using the same. The optical device comprises a structure light generation unit and a sensing determination unit; the structure light generation unit is used for providing structure light projecting to a tested surface, and, when the structure light is projected to the tested surface, a tested pattern and a tested light point are presented on the tested surface; the sensing determination unit is used for sensing the tested pattern and the tested light point which are presented on the tested surface, determining whether the tested surface is flat according to a sensed deformation degree of the tested pattern and obtaining a distance between the tested surface and the optical device according to the area of the sensed tested light point. The detection method is used for detecting whether the tested surface is flat and a distance of the tested surface. As a result, the detection method and optical device can use the structure light to perform distance and flatness measurement on the tested surface in order to reduce the complexity of the measurement.

Description

technical field [0001] The present invention relates to an optical device, in particular to an optical device providing a detection function. Background technique [0002] In recent years, with the evolution of the electronics industry and the vigorous development of industrial technology, the design and development of various electronic devices are gradually moving towards portable and easy-to-carry directions, so that users can use them in mobile commerce, entertainment or leisure anytime, anywhere. use. For example, various image capture devices are widely used in various fields, such as smart phones, wearable electronic devices, aerial photography devices and other electronic devices, which have the advantages of small size and easy portability. It can be taken out at any time when there is a need for use, and the image can be captured and stored, or further uploaded to the Internet through the mobile network, which not only has important commercial value, but also adds...

AI Technical Summary

Problems solved by technology

However, a single laser range finder can only obtain the distance information of a single point (a point on the surface to be landed), and if in order to improve the landing quality, multiple laser range finders must be installed on the aerial photography device to achieve Obtain the distance between multiple points on the surface to be landed and the aerial camera device, and then judge the flatness of the surface to be landed, but this obviously increases the cost of the aerial camera device, and also increases the complexity of control calculations

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