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    Handheld ID-reading system with integrated illumination assembly
    5.
    发明授权
    Handheld ID-reading system with integrated illumination assembly 有权

    公开(公告)号：US11003875B2

    公开(公告)日：2021-05-11

    申请号：US16177791

    申请日：2018-11-01

    Applicant: Cognex Corporation

    Inventor： Jose Fernandez Dorado ,  Laurens Nunnink ,  Saul Sanz Rodriguez ,  Kai Fluegge ,  Yasin Salih Ciftci

    IPC: G06K7/10 ,  H04N5/225 ,  F21K9/60 ,  G02F1/1335

    Abstract: This provides an ID reader, typically configured for handheld operation, which integrates three types of illumination into a compact package that generates robust performance and resistance to harsh environmental conditions, such as dust and moisture. These illumination types include, direct (diffuse) light, low-angle light and polarized light. The ID reader includes a sealed reader module assembly having the illuminators in combination with an imager assembly (optics and image sensor) at its relative center. Additionally, also an on-axis aimer and a variable focus system with liquid lens have been integrated in this module and is placed on axis using a mirror assembly that includes a dichroic filter. As the optimal distance to read a code with low-angle light is typically shorter than the optimal distance to use the polarized illumination a variable (e.g. liquid) lens can adjust the focus of the reader to the optimal distance for the selected illumination.

    CODE READER WITH EXTENDED READING RANGE
    6.
    发明申请
    CODE READER WITH EXTENDED READING RANGE 审中-公开

    公开(公告)号：US20190018993A1

    公开(公告)日：2019-01-17

    申请号：US15455406

    申请日：2017-03-10

    Applicant: Cognex Corporation

    Inventor： Pepe Fernandez-Dorado ,  Saul Sanz Rodriguez ,  Laurens Nunnink ,  Richard Reuter

    IPC: G06K7/10 ,  G06K19/06 ,  G06K7/14

    Abstract: An image based code reader comprises an image sensor. The image sensor is configured to acquire an image of a code. Additionally, the image based code reader includes a lens configured to project an image scene including the code onto the image sensor, the lens comprising a variable optical power that controls a focus distance of the image based code reader. The image based code reader further includes a processor operatively coupled to the image sensor and the lens. The processor is configured to acquire the image of the code using only pixels located within a region of interest of the sensor, and a size of the region of interest is selected based on the focus distance of the reader.

    On-axis aimer for vision system and multi-range illuminator for same
    9.
    发明授权
    On-axis aimer for vision system and multi-range illuminator for same 有权

    公开(公告)号：US11630962B1

    公开(公告)日：2023-04-18

    申请号：US17361176

    申请日：2021-06-28

    Applicant: Cognex Corporation

    Inventor： Laurens Nunnink ,  Saul Sanz Rodriguez

    IPC: G06K7/015 ,  F21V13/04 ,  F21V5/04 ,  G06K7/10 ,  G03B3/00

    Abstract: This invention provides an aimer assembly for a vision system that is coaxial (on-axis) with the camera optical axis, thus providing an aligned aim point at a wide range of working distances. The aimer includes a projecting light element located aside the camera optical axis. The beam and received light from the imaged (illuminated) scene are selectively reflected or transmitted through a dichoric mirror assembly in a manner that permits the beam to be aligned with the optical axis and projected to the scene while only light from the scene is received by the sensor. The aimer beam and illuminator employ differing light wavelengths. In a further embodiment, an internal illuminator includes a plurality of light sources below the camera optical axis. Some of the light sources are covered by a prismatic structure for close distance, and other light sources are collimated, projecting over a longer distance.

    Handheld ID-reading system with integrated illumination assembly
    10.
    发明授权
    Handheld ID-reading system with integrated illumination assembly 有权

    公开(公告)号：US11574137B2

    公开(公告)日：2023-02-07

    申请号：US17316490

    申请日：2021-05-10

    Applicant: Cognex Corporation

    Inventor： Jose Fernandez Dorado ,  Laurens Nunnink ,  Saul Sanz Rodriguez ,  Kai Fluegge ,  Yasin Salih Ciftci

    IPC: G06K7/10 ,  H04N5/225 ,  F21K9/60 ,  G02F1/1335

    Abstract: This provides an ID reader, typically configured for handheld operation, which integrates three types of illumination into a compact package that generates robust performance and resistance to harsh environmental conditions, such as dust and moisture. These illumination types include, direct (diffuse) light, low-angle light and polarized light. The ID reader includes a sealed reader module assembly having the illuminators in combination with an imager assembly (optics and image sensor) at its relative center. Additionally, also an on-axis aimer and a variable focus system with liquid lens have been integrated in this module and is placed on axis using a mirror assembly that includes a dichroic filter. As the optimal distance to read a code with low-angle light is typically shorter than the optimal distance to use the polarized illumination a variable (e.g. liquid) lens can adjust the focus of the reader to the optimal distance for the selected illumination.

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