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Patent Searching and Data


Title:
LIGHT-SHIELDING PLATE, CAMERA UNIT, AND ELECTRONIC DEVICE
Document Type and Number:
WIPO Patent Application WO/2021/015131
Kind Code:
A1
Abstract:
The present invention comprises an obverse surface positioned on a side at which light impinges, a reverse surface that is on the side opposite from the obverse surface, and a hole passing through between the obverse surface and the reverse surface. The hole comprises a first hole portion and a second hole portion that is connected to the first hole portion at a central opening. The first hole portion extends from a reverse-surface opening in the reverse surface to the central opening, and has a shape that tapers from the reverse surface toward the obverse surface. The second hole portion extends from an obverse-surface opening in the obverse surface to the central opening, and has a shape that tapers from the obverse surface toward the reverse surface. The size of the obverse-surface opening is greater than that of the reverse-surface opening. When an edge of the central opening is imaged along the radial direction of the central opening in a state in which a focal point overlaps the edge of the central opening under imaging conditions such that the depth of field is 0.4 µm, the maximum width of a light-shielding plate overlapped by the focal point in the thickness direction of the light-shielding plate is 7.0 µm or less.

Inventors:
NISHITSUJI KIYOAKI (JP)
SHIMAMURA SHINICHI (JP)
Application Number:
PCT/JP2020/027893
Publication Date:
January 28, 2021
Filing Date:
July 17, 2020
Export Citation:
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Assignee:
TOPPAN PRINTING CO LTD (JP)
International Classes:
C23F1/00; G02B5/00; G02B7/02; G03B9/02
Foreign References:
JP2006072151A2006-03-16
JP2002229095A2002-08-14
JP2008257134A2008-10-23
Attorney, Agent or Firm:
ONDA Makoto et al. (JP)
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