IMAGE SENSOR, CAMERA AND IMAGING SYSTEM WITH TWO OR MORE  FOCUS PLANES

    公开(公告)号:EP4435487A1

    公开(公告)日:2024-09-25

    申请号:EP23163222.5

    申请日:2023-03-21

    申请人: Sick IVP AB

    发明人: Murhed, Anders

    IPC分类号: G02B7/04 G02B13/00

    CPC分类号: G02B7/04 G02B13/0055

    摘要: Image sensor (331; 531; 531') for use with a lens (340; 540') arranged to focus light onto an image sensing area (333; 533) of said image sensor (331; 531). Camera (330; 530'; 730) comprising the image sensor (331; 531; 531') and said lens (340; 540'). Imaging system (305; 705; 730) for three-dimensional imaging of an object (320; 720) based on light triangulation, comprising the camera. The image sensor (331; 531) comprising an optical plate (337; 537) arranged to cover the image sensing area (333; 533) by at least two optical plate portions (334-1, 334-2; 534-1, 534-2) with different refractive properties such that light incident from said lens (340; 540') and refracted by said optical plate portions (334-1, 334-2; 534-1, 534-2) towards and onto the image sensing area (333; 533) will travel different distances to be in focus on the image sensing area depending on which of said optical plate portions (334-1, 334-2; 534-1, 534-2) the light was refracted by. As a result, the image sensing area portions covered by said at least two optical plate portions (334-1, 334-2; 534-1, 534-2) become associated with different focus planes (351-1, 351-2; 751-1, 751-2).

    IMAGE ACQUISITION DEVICE AND FOCUS METHOD FOR IMAGE ACQUISITION DEVICE

    公开(公告)号:EP2947488A4

    公开(公告)日:2016-08-24

    申请号:EP13871428

    申请日:2013-01-17

    发明人: OISHI HIDESHI

    IPC分类号: G02B7/28 G02B21/24 H04N5/232

    摘要: In the image capturing apparatus M, the optical path difference producing member 21 is disposed on the second optical path L2. Thereby, it is possible to suppress the amount of light when an optical image which is focused at the front of an optical image made incident into the first imaging device 18 (front focus) and an optical image which is focused at the rear thereof (rear focus) are respectively imaged at the second imaging device 20 and also to secure the amount of light on image pickup by the first imaging device 18. Further, in the image capturing apparatus M, a position of the first imaging region 22A and a position of the second imaging region 22B on the imaging area 20a are reversed with respect to the axis P in association with reversal of a scanning direction of the sample S. Therefore, despite the scanning direction of the sample S, it is possible to obtain a deviation direction of the focus position under the same conditions.

    OBJECTIVE OPTICAL ELEMENT AND OPTICAL PICKUP DEVICE
    8.
    发明公开
    OBJECTIVE OPTICAL ELEMENT AND OPTICAL PICKUP DEVICE 审中-公开
    OPTISCHES ELEMENTFÜREIN OBJEKTIV UND OPTISCHER LESEKOPF

    公开(公告)号:EP2367171A1

    公开(公告)日:2011-09-21

    申请号:EP09833428.7

    申请日:2009-12-15

    发明人: NAKAMURA Kentarou

    IPC分类号: G11B7/135 G02B13/00

    摘要: Provided is an objective optical element which can appropriately correct degradation from spherical aberration upon fluctuation of a light source wavelength while maintaining light use efficiency, just by changing the magnification of the objective optical element, and which can record/reproduce information to/from different optical discs. Also provided is an optical pickup device using the objective optical element. When a light flux having two different wavelengths λ 11 , λ 12 (wherein λ 11 12 and λ 12 - λ 11 = 5nm) within a range of wavelength λ 1 is introduced to the objective optical element to measure the wavefront aberration, the following third order and fifth order spherical aberrations in unit of λrms are obtained: SA3(λ 11 ), SA5(λ 11 ), SA3(λ 12 ), SA5(λ 12 ). If ΔSA3 = |SA3(λ 12 ) - SA3(λ 11 )|, ΔSA5 = |SA5(λ 12 ) - SA5(λ 11 )|, the following expression is satisfied: 0.18 > ΔSA3 > ΔSA5 >0 (1)

    摘要翻译: 提供了一种物镜光学元件,其可以通过改变物镜光学元件的倍率来适当地校正光源波长的波动时的球面像差的降低,同时保持光的使用效率,并且可以从/从不同的光学记录/再现信息 光盘。 还提供了使用物镜光学元件的光学拾取装置。 当在波长λ1范围内具有两个不同波长的光通量(11)在其光学元件中被引入到物镜光学元件中以测量波前像差时, 获得以rms为单位的三阶和五阶球面像差:SA3(»11),SA5(»11),SA3(»12),SA5(»12)。 如果“SA3 = | SA3(»12) - SA3(»11)|,”SA5 = | SA5(»12) - SA5(»11)|,则满足以下表达式:0.18>“SA3>”SA5> 0 (1)