ENDOSCOPE

摘要

An endoscope includes a single lens that has a square exterior shape in a direction perpendicular to an optical axis, an image sensor that has an square exterior shape which is same as the exterior shape of the single lens, in the direction perpendicular to the optical axis, a sensor cover that has an exterior shape which is same as the exterior shape of the single lens, in the direction perpendicular to the optical axis; and a bonding resin portion that fixes the sensor cover to the single lens, The single lens is a lens which is formed in a prismatic shape. The single lens has first surface on an imaging subject side that has a plane, and has second surface on an imaging side that has a convex surface.

主权项

1. An endoscope, comprising:
a single lens that has a square exterior shape in a direction perpendicular to an optical axis; an image sensor that has an square exterior shape which is same as the exterior shape of the single lens, in the direction perpendicular to the optical axis; a sensor cover that covers an imaging area of the image sensor, and has an exterior shape which is same as the exterior shape of the single lens, in the direction perpendicular to the optical axis; and a bonding resin portion that fixes the sensor cover to the single lens, the optical axis of the single lens coinciding with a center of the imaging area, wherein the image sensor has one side whose length is 0.5 mm or smaller; wherein the single lens is a lens which is formed in a prismatic shape, and whose first surface on an imaging subject side has a plane and whose second surface on an imaging side has a convex surface; wherein a central portion of the single lens has a convex curved surface which protrudes in a substantially spherical shape configuring a lens surface of the convex surface on the imaging side; and wherein a peripheral edge portion of the single lens has a planar end surface, and has a bonding plane with the sensor cover over an entire area of the planar end surface.