Imaging device

• US 10,116,845 B2
• Filed: 04/20/2016
• Issued: 10/30/2018
• Est. Priority Date: 11/06/2013
• Status: Active Grant

• Current Assignee: Ricoh Company Limited
• Original Assignee: Ricoh Company Limited
• Inventors: Hiramatsu, Takahiro
• Primary Examiner(s): Wang, Xi
• Application Number:
  US15/133,346
• Publication Number:
  US 20160234412A1
• Time in Patent Office: 923 Days
• Field of Search: 348 1408, 348373-376, 361600, 36167901
• CPC Class Codes: G02B 7/02 for lenses supports for magnifying lenses G02B25/002
• CPC Class Codes: G03B 11/04 Hoods or caps for eliminating unwanted light from lenses, viewfinders or focusing aids
• CPC Class Codes: G03B 11/045 Lens hoods or shields
• CPC Class Codes: G03B 17/02 Bodies
• CPC Class Codes: H04N 23/51 Housings
• CPC Class Codes: H04N 23/54 Mounting of pick-up tubes, electronic image sensors, deviation or focusing coils
• CPC Class Codes: H04N 23/55 Optical parts specially adapted for electronic image sensors; Mounting thereof
• CPC Class Codes: H04N 7/142 Constructional details of the terminal equipment, e.g. arrangements of the camera and the display
• CPC Class Codes: H04N 7/15 Conference systems

Abstract

An imaging device includes an imaging unit having an imaging part, and a holder to hold the imaging part at one end; a housing including a recess part in a first surface to house the imaging unit; and a hinge device having a hinge member housed in the recess part pivotally coupled to the housing around an axle extending in parallel with the first surface. The imaging unit pivots around the axle via the hinge device between a housing position and a projecting position of the imaging unit. The imaging part includes a rectangular imaging element, a lens introducing external light into the imaging element, and a lens hood at an outer periphery of the lens. The lens hood projects from the lens surface by a distance allowing the imaging part to introduce necessary light from the lens into the imaging element and block unnecessary light.

Claims

1. An imaging device comprising:

an imaging unit having an imager configured to image a subject, and a holder configured to hold the imager at one end thereof;

a housing including a recess formed in a first surface thereof, and configured to house the imaging unit, the housing being a housing for a video conferencing device; and

a hinge having a hinge member housed in the recess pivotally coupled to the housing around an axle extending approximately in parallel with the first surface inside the recess of the housing, wherein

the imaging unit pivots around the axle via the hinge between a housing position at which the imaging unit is housed inside the recess of the housing and a projecting position at which the imaging unit is projected from the recess of the housing,

wherein;

the imager includes an imaging element having a rectangular shape with a 16;

9 aspect ratio, a lens configured to introduce external light into the imaging element, and a lens hood mounted at an outer periphery of the lens, the imaging element disposed inside of the housing,

the lens hood projects from a surface of the lens by a distance to allow the imager to introduce light for imaging a subject from the lens into the imaging element and to block unnecessary light introduced from the lens into the imaging element,

a shape of the lens hood is substantially rectangular, and has an aspect ratio substantially the same as the aspect ratio of the imaging element, and

the substantially rectangular shape of the lens hood has substantially the same shape as the rectangular shape of the imaging element in both a horizontal and a vertical dimension.

2. The imaging device according to claim 1, wherein:

when R represents the distance by which the lens hood projects from the surface of the lens, R is 1.0 mm≤

R≤

2.0 mm.

3. The imaging device according to claim 1, wherein:

the lens hood further includes a gradient part, and

the gradient part is inclined from a periphery of a subject side end face of the lens hood to a periphery of an opening of the lens hood toward an imaging element side.

4. The imaging device according to claim 1, wherein:

a subject side end face of the lens hood includes a middle part and end parts that sandwich the middle part, and

at least the middle part projects toward a subject side with respect to the end parts that sandwich the middle part.

5. The imaging device according to claim 1, wherein:

the lens hood includes a resilient material.

6. The imaging device according to claim 1, wherein:

the recess includes a region facing the imager at a housing position at which the imaging unit is housed, and

at least the region facing the imager includes a resilient material.

7. The imaging device according to claim 1, wherein the lens hood comprises:

a substantially rectangular section at an inner portion of the lens hood which surrounds a lens opening of the lens hood.

8. The imaging device according to claim 7, wherein:

the substantially rectangular section at the inner portion of the lens hood includes a gradient part.

9. The imaging device according to claim 8, wherein:

the gradient part includes steps which are at an outer region.

10. The imaging device according to claim 8, wherein:

the gradient part includes an outer region that is more outward from the lens than an inner region.

11. The imaging device according to claim 7, wherein the substantially rectangular region includes protrusions to mount the lens hood to the imager.

12. The imaging device according to claim 1, wherein:

the lens hood includes an opening to expose the surface of the lens when the lens is fit into the lens hood,

the lens hood includes at least three protrusions disposed at an outer periphery of the opening, the protrusions protruding towards a center of the lens.

13. The imaging device according to claim 12, wherein the at least three protrusions are disposed at equal intervals at the outer periphery of the opening.