A molding method applied to reflective mirrors in testing equipment

Abstract

The invention provides a forming method of a reflector applied in detection equipment. The method comprises the steps of dividing an incident ray into a plurality of basic rays with smaller divergence angles, matching a reflection curved surface with each basic ray to focus the light rays to a target focus, allowing an incidence angle to be alpha when focusing the light ray reflected by the xth reflection curved surface to the target focus, adjusting the area of the reflection curved surface matched with an xth light ray according to a requirement of the target focus in the intensity of the light ray with the incidence angle of alpha and allowing the intensity of the light ray at the target focus to be adjusted with the change of the incidence angle. According to the method, effective focusing of the incident rays can be achieved only by the single reflector without a complicated optical system; the intensity of the light ray at the target focus is adjusted with the incidence angle at the same time; the quantity of optical devices is effectively reduced; and the method allows the optical system to be simple in structure, low in cost and small in debugging difficulty.

Description

technical field [0001] The invention relates to the technical field of optical system design methods, in particular to a method for forming reflectors used in detection equipment. Background technique [0002] In the field of machine vision, in order to realize three-dimensional feature detection, it is required that the optical system equipped with the detection equipment can converge light to a target focus. At present, the optical system of the detection equipment generally uses LED chips as the light source. On the one hand, the LED chip is a surface light source, and the light emitted by it has a large divergence angle. On the other hand, the space in the detection equipment is limited and the structure is compact. The distance between devices is limited, and the detection equipment has high requirements for the accuracy of the optical system, so it is difficult to approximate the light emitted by the light source as parallel light. Therefore, it is generally difficult ...

AI Technical Summary

Problems solved by technology

At present, the optical system of the detection equipment generally uses LED chips as the light source. On the one hand, the LED chip is a surface light source, and the light emitted by it has a large divergence angle. On the other hand, the space in the detection equipment is limited and the structure is compact. The distance between devices is limited, and the detection equipment has high requirements for the accuracy of the optical system, so it is difficult to approximate the light emitted by the light source as parallel light. Therefore, it is generally difficult for the optical system of the detection equipment to simply use a concave mirror to The incident light is focused to the focal point of the target, and a complex optical system is generally required to achieve precise focusing of the incident light

[0003] In addition, in the field of machine vision, the requirements for the intensity of light incident on the focus of the target are related to the angle of incidence, that is, at the focus of the target, the intensity of light required for the light system with different angles of incidence is also different. This requirement makes the optical system more complex

[0004] However, as we all know, optical components are relatively expensive devices with high precision requirements. When the optical system is more complex, not only the cost will be greatly increased, but also the system is difficult to debug during use, which affects the use efficiency of the equipment.

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