The present embodiment pertains to a camera module comprising: a first body comprising a lens; a second body coupled to the first body and comprising a connection portion; and a sealing member and a ground member, arranged on the connection portion of the second body, wherein the connection portion comprises a first area having a first hole and a second area having a second hole of which the diameter is greater than the diameter of the first hole, the sealing member is arranged in the second area, the ground member is arranged to be spaced apart from the sealing member, and the second area is positioned between the first area and the ground member.

The present embodiment pertains to a camera module comprising: a first body comprising a lens; a second body coupled to the first body and comprising a connection portion; and a sealing member and a ground member, arranged on the connection portion of the second body, wherein the connection portion comprises a first area having a first hole and a second area having a second hole of which the diameter is greater than the diameter of the first hole, the sealing member is arranged in the second area, the ground member is arranged to be spaced apart from the sealing member, and the second area is positioned between the first area and the ground member.

A lens unit includes a lens, a lens barrel, a housing groove, and a vent hole. The lens barrel houses the lens. The housing groove is formed in the lens barrel and houses an adhesive for bonding the lens and the lens barrel. The vent hole is a hole for discharging air and is formed in the housing groove.

A lens unit includes a lens, a lens barrel, a housing groove, and a vent hole. The lens barrel houses the lens. The housing groove is formed in the lens barrel and houses an adhesive for bonding the lens and the lens barrel. The vent hole is a hole for discharging air and is formed in the housing groove.

A buoyancy adjuster includes: a buoyant portion detachably attached to a target object including a housing portion having a positive buoyancy, the buoyant portion having a neutral or negative buoyancy; and an orientation adjuster detachably attachable to the buoyant portion, the orientation adjuster configured to adjust orientation of the target object in a fluid. The orientation adjuster includes a weight portion detachably attached to a prescribed position of the buoyant portion, the weight portion having a negative buoyancy exceeding the positive buoyancy of the housing portion. A first height position of the housing portion relative to a second height position of the buoyant portion attaching the weight portion is lower than the first height position relative to the second height position of the buoyant portion without the weight portion in the fluid.

A lens unit including a lens group formed by aligning a plurality of lenses along an optical axis; and a lens barrel having a cylindrical shape and including an inner accommodation space for accommodating and holding the lens group, the lens group including a first lens located to be closest to an object side and a second lens adjacent to the first lens on an image side, the lens unit including an annular body that integrates the first lens and the second lens and that is fit to outer circumferences of the first lens and the second lens to cover a joint portion between the first lens and the second lens from an outside, and the annular body is fit to an inner circumferential surface of the lens barrel, and includes a seal portion for tightly sealing an inside of an inter-lens space.

A lens unit including a lens group formed by aligning a plurality of lenses along an optical axis; and a lens barrel having a cylindrical shape and including an inner accommodation space for accommodating and holding the lens group, the lens group including a first lens located to be closest to an object side and a second lens adjacent to the first lens on an image side, the lens unit including an annular body that integrates the first lens and the second lens and that is fit to outer circumferences of the first lens and the second lens to cover a joint portion between the first lens and the second lens from an outside, and the annular body is fit to an inner circumferential surface of the lens barrel, and includes a seal portion for tightly sealing an inside of an inter-lens space.

An optical system for a hyperspectral camera and a hyperspectral camera comprising such an optical system are disclosed. The optical system comprises fore optics (1000), an image sensor (1800), a slit (1500), relay optics (1200), a first optical element (2000) positioned before the slit (1500), where the first optical element (2000) is defocusing light in a direction parallel to the slit (1500) while keeping focus in a direction perpendicular to the slit (1500); and a second optical element (2100) positioned after the slit (1500), where the second optical element (2100) is compensating the defocus of the depicted scene introduced by the first element (2000).

An optical system for a hyperspectral camera and a hyperspectral camera comprising such an optical system are disclosed. The optical system comprises fore optics (1000), an image sensor (1800), a slit (1500), relay optics (1200), a first optical element (2000) positioned before the slit (1500), where the first optical element (2000) is defocusing light in a direction parallel to the slit (1500) while keeping focus in a direction perpendicular to the slit (1500); and a second optical element (2100) positioned after the slit (1500), where the second optical element (2100) is compensating the defocus of the depicted scene introduced by the first element (2000).

A button for use with an image capture device in an underwater environment that includes a movable plunger configured to cause actuation of the image capture device and upper and lower components collectively defining an internal cavity that is configured to receive the plunger. The upper and lower components are configured and connected such that actuation of the image capture device is prevented until a threshold pressure is applied to the upper component that is greater than external water pressure applied in the underwater environment. The upper component includes at least one opening that is configured to allow water to enter the internal cavity to modify an internal pressure within the internal cavity so as to reduce the threshold pressure required to actuate the image capture device in the underwater environment.