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Near-infrared absorbing glass and method for manufacturing same

A near-infrared, manufacturing method technology, applied in TV, color TV, coating, etc., can solve problems such as ghosting, flare, etc., and achieve the effect of preventing ghosting or light spots

Active Publication Date: 2015-12-02
HOYA CANDEO OPTRONICS +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] However, if optical components such as such near-infrared-absorbing glass are arranged in front of the imaging element, flares (flare) will occur because light reflected on the side surface of the near-infrared-absorbing glass or the like enters the imaging surface of the imaging element. ) or ghost (ghost) etc.

Method used

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  • Near-infrared absorbing glass and method for manufacturing same
  • Near-infrared absorbing glass and method for manufacturing same
  • Near-infrared absorbing glass and method for manufacturing same

Examples

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no. 1 Embodiment

[0044] figure 1 It is a plan view of the near-infrared absorbing glass 10 according to the first embodiment of the present invention. figure 2 It is a side view of the near-infrared absorbing glass 10 according to the first embodiment of the present invention. also, image 3 It is a longitudinal sectional view of the solid-state imaging device 100 in which the opening of the package 60 of the solid-state imaging device 50 is sealed with the near-infrared-absorbing glass 10 according to the first embodiment of the present invention.

[0045] Such as Figure 1 ~ Figure 3 As shown, the near-infrared absorbing glass 10 of this embodiment is disposed between the cover glass 30 of the hermetic package 60 and the low-pass filter 20 for removing ripples of optical analog signals, and absorbs incident light entering the solid-state imaging device 100 Glass for near-infrared rays. The near-infrared absorbing glass 10 is fixed by bonding with a small gap between the cover glass 30 a...

no. 2 Embodiment

[0110] Figure 8 It is a side view of the near infrared absorption glass 10M concerning the 2nd Example of this invention.

[0111] Such as Figure 8As shown, the near-infrared-absorbing glass 10M of this embodiment is different from the near-infrared-absorbing glass 10 of the first embodiment in that a light-shielding layer 23 is provided between the cloudiness layer 21 and the antireflection film 24 .

[0112] The light-shielding layer 23 is a black ink layer with a thickness of about 10 μm formed by screen printing, and is formed on the cloudy layer 21 to block unnecessary light incident on the surface of the glass substrate 20 (the surface on the incident surface 12 side).

[0113] Figure 9 It is a flow chart showing the manufacturing method of the near infrared absorption glass 10M concerning this Example.

[0114] Such as Figure 9 As shown, the manufacturing method of the near-infrared-absorbing glass 10M of the present embodiment is to perform the printing process...

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Abstract

A board-like near-infrared absorbing glass of the present invention absorbs near infrared components of light, and is provided with, on the front and rear sides thereof, a light incoming surface from which light traveling toward a solid-state image pickup element is inputted, and a light outgoing surface from which the light is outputted toward the solid-state image pickup element, said light having passed through the near-infrared absorbing glass. The near-infrared absorbing glass is provided with: a light transmitting section which light can pass through; and a light scattering section, which is formed on the light incoming surface and / or light outgoing surface such that the outer circumference of the light transmitting section is surrounded in a frame-like manner, and which scatters a part of the light.

Description

technical field [0001] The present invention relates to a near-infrared absorption glass used for visibility correction of a solid-state imaging element and a manufacturing method thereof. Background technique [0002] Conventionally, solid-state imaging devices such as CCDs and CMOSs ​​have been used in digital cameras and the like. Since this solid-state imaging device has spectral sensitivity ranging from the near-ultraviolet region to the near-infrared region, near-infrared-absorbing glass is used to cut off the near-infrared portion of incident light and change the visibility to be close to that of humans to improve color reproduction. (eg, Patent Document 1). [0003] However, if optical components such as such near-infrared-absorbing glass are arranged in front of the imaging element, flares (flare) will occur because light reflected at the side surface of the near-infrared-absorbing glass or the like enters the imaging surface of the imaging element. ) or ghost (gh...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01L27/14C03C15/00G02B5/22H04N5/225H04N5/359
CPCC03C15/00G02B5/208G02B5/22H01L27/14618H01L27/14623H01L27/14625C03C2204/08C03C2218/34
Inventor 山崎武志石田克则
Owner HOYA CANDEO OPTRONICS
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