Abstract: The present invention provides a lens unit having a cover member which does not cause deviation in precision and capable of being manufactured efficiently at low cost. In a lens unit 10A, side surfaces of a cover member 14a continuing from a front end surface 29 to a rear end surface located at a lens side are formed in a regular quadrangular prism, at least two of corners of the regular quadrangular prism are in contact with an inner peripheral surface 27 of a housing space 17 of a holder 11a for housing the cover member 14a, a gap 34 is formed between each of the side surfaces of the cover member 14a and the inner peripheral surface 27 of the holder 11a, and an effective area of a light beam is located inside a light receiving area having a regular quadrangular shape surrounded by an outer peripheral edge of the front end surface 29 of the cover member 14a.

Abstract: A lens unit includes: a lens including a lens part formed at the center of the lens, and a flange part that extends radially outward from the periphery of the lens part and includes a rear end surface on its rear side; a transparent spacer that is disposed behind the lens in the optical axis direction and used for focusing the lens part, the spacer including a front end surface that opposes to the rear of the lens, a spaced-apart part that opposes to the lens part and is spaced apart rearward in the optical axis direction from the lens part, and a bonded peripheral part that extends radially outward from the periphery of the spaced-apart part; and an adhesive that is disposed between the rear end surface of the flange part and the bonded peripheral part and bonds the lens and the spacer.

Abstract: An imaging module includes: an object lens; an image-sensing device; a holder that holds the object lens and the image-sensing device, the holder having a butt-contact portion with which the object lens is able to be brought into contact from an object side; and an aperture stop arranged closer to the object than the butt-contact portion, wherein an area that is to be light-shielded by an outer-periphery of the aperture stop is larger than an internal diameter of the butt-contact portion.

Abstract: The present invention provides a lens unit having a cover member which does not cause deviation in precision and capable of being manufactured efficiently at low cost. In a lens unit 10A, side surfaces of a cover member 14a continuing from a front end surface 29 to a rear end surface located at a lens side are formed in a regular quadrangular prism, at least two of corners of the regular quadrangular prism are in contact with an inner peripheral surface 27 of a housing space 17 of a holder 11a for housing the cover member 14a, a gap 34 is formed between each of the side surfaces of the cover member 14a and the inner peripheral surface 27 of the holder 11a, and an effective area of a light beam is located inside a light receiving area having a regular quadrangular shape surrounded by an outer peripheral edge of the front end surface 29 of the cover member 14a.

Abstract: An imaging module includes: an object lens; an image-sensing device; a holder that holds the object lens and the image-sensing device, the holder having a butt-contact portion with which the object lens is able to be brought into contact from an object side; and an aperture stop arranged closer to the object than the butt-contact portion, wherein an area that is to be light-shielded by an outer-periphery of the aperture stop is larger than an internal diameter of the butt-contact portion.

Abstract: [Problem] To propose a hybrid lens unit comprising a hybrid lens and a guide component which can be manufactured with a low cost and a method thereof. [Means for Solving the Problems] A method of manufacturing a hybrid lens unit includes the following steps of; (a) preparing a guide component having a through hole, and a plane parallel glass plate formed of optical glass; (b) fixing the plane parallel glass plate to at least one of surface of the guide component so that the plane parallel glass plate is accommodated in the guide component; and then (c) forming a resin lens on at least one of surfaces of the plane parallel glass plate by applying and curing energy-curable resin.

Abstract: To propose a hybrid lens, which does not depend on a shape and thickness of glass, which has an excellent dimensional precision, and which can be manufactured with a low cost and a method thereof. A method of manufacturing a hybrid lens includes the following steps of (a) preparing a guide component having a through hole, and a plane parallel glass plate formed of optical glass; (b) fixing the plane parallel glass plate to at least one of surface of the guide component so that the plane parallel glass plate is accommodated in the guide component; and then (c) forming a resin lens on at least one of surfaces of the plane parallel glass plate by applying and curing energy-curable resin.