Illuminator for a viewing unit of an optical inspection machine for the quality control of parts
AssigneeDoss Visual Solution S.R.L.
InventorHemiliano BERSELLI
Life of this patent
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Abstract
An illuminator for a viewing unit of an optical inspection machine for the quality control of parts, in particular gaskets, comprises a diffusion chamber, a diffuse illumination source, a low-angle illumination source, a direct illumination source placed in the diffusion chamber, and an annular reflective element placed in the diffusion chamber. The annular reflective element is integral to the direct illumination source so that together they form a chamber closure assembly delimiting the upper end of the diffusion chamber. The chamber closure assembly can move axially by translational movement in the diffusion chamber both toward and away from the diffuse illumination source.
Claims11
An illuminator for a viewing unit of an optical inspection machine for the quality control of parts, in particular gaskets, comprising:
- a substantially cylindrical diffusion chamber delimited laterally by a side wall and on a bottom by a lower plate in which a central opening is made,
- a diffuse illumination source in the shape of a circular crown, supported by the lower plate and designed to generate a light beam inside the diffusion chamber directed substantially in parallel to the side wall,
- a low-angle illumination source that extends beneath the lower plate, around the central opening, which is designed to generate a light beam pointing downward and converging toward the main axis of the diffusion chamber so as to illuminate side surfaces of a part to be inspected placed beneath the illuminator;
- a direct illumination source inside the diffusion chamber capable of generating a downward-directed light beam;
- an annular reflective element placed in the diffusion chamber and defining an annular portion of concave surface facing the diffuse light source so as to reflect and diffuse the rays coming from the diffuse illumination source into the diffusion chamber,
- wherein said annular reflective element is integral to the direct illumination source so that they together form a chamber closure assembly that delimits the top of the diffusion chamber, and wherein said chamber closure assembly can move axially with translational movement in the diffusion chamber both toward and away from the diffuse illumination source.
Dependencies are inferred from the claim text.