Endoscope
AssigneePanasonic Corporation
InventorsNaoyuki HARAGUCHI, Takafumi SANADA, Nobuhiro TSUCHIHASHI
Life of this patent
Estimating the term…
Abstract
An endoscope includes at least one lens having a circular exterior shape in a direction perpendicular to an optical axis, an image sensor that has a square exterior shape in the direction perpendicular to the optical axis, and has one side whose length is same as length of a diameter of the lens, a sensor cover that has a square exterior shape in the direction perpendicular to the optical axis, and has one side whose length is same as one side length of the image sensor, a bonding resin portion that fixes the sensor cover to the lens, the optical axis of the lens coinciding with a center of the imaging area.
Claims8
An endoscope comprising:
- a lens unit that accommodates a front group lens and a rear group lens, an aperture stop being disposed between the front group lens and the rear group lens;
- an image sensor that has an imaging area covered with a sensor cover;
- and
- a bonding resin portion that fixes the lens unit to the sensor cover, each optical axis of the front group lens and the rear group lens coinciding with a center of the imaging area,
- wherein an outer circumferential surface of the rear group lens is formed by a rough surface portion that suppresses totally reflection of light propagating through the rear group lens on the outer circumferential surface.
An endoscope comprising;
- a lens unit that accommodates a front group lens and a rear group lens having an circular exterior shape in a direction perpendicular to an optical axis of each of the front group lens and the rear group lens, an aperture stop being disposed between the front group lens and the rear group lens;
- an image sensor that has a square exterior shape in the direction perpendicular to the optical axis, and has one side whose length being same as a diameter of each of the front group lens and the rear group lens;
- a sensor cover that covers an imaging area of the image sensor, has a square exterior shape in the direction perpendicular to the optical axis, and has one side whose length being same as the length of the one side of the image sensor;
- and
- a bonding resin portion that fixes the lens unit to the sensor cover, each optical axis of the front group lens and the rear group lens coinciding with a center of the imaging area,
- wherein an outer circumferential surface of the rear group lens is formed by a rough surface portion that suppresses totally reflection of light propagating through the rear group lens on the outer circumferential surface.
Dependencies are inferred from the claim text.