JPH0224303Y2 - - Google Patents

Description

[Detailed Description of the Invention] Industrial Application Field The present invention relates to a video camera using an image pickup element in an image receiving section.

2. Prior Art FIG. 2 is a longitudinal sectional view of the main parts of a conventional video camera of this type according to the present invention. Reference numeral 2 denotes a lens barrel housing lenses 1 and 1'; a cylindrical portion 11 of the chassis 3 disposed within the opening 20 of the camera body 10;
It is fixed to the camera body 10 by screws 6, 6' which are inserted into the cylindrical part 11 and tightened from the outer peripheral surface of the cylindrical part 11 toward the center. Reference numeral 5 designates a board on which electronic components are mounted, and an image pickup element 4 constituting an image receiving section of a video camera is attached to this board 5. The substrate 5 is fixed to the flange surface 9 of the cylindrical portion 11 perpendicular to the axial direction of the cylindrical portion 11 using screws 7, 7' and spacers 8, 8'. As a result, the image sensor 4 has a light-receiving surface B of the lenses 1 and 1' built into the lens barrel 2.
is placed on the optical path formed by the

Problems that the invention aims to solve In the conventional configuration shown in Figure 2, the board on which the image sensor is mounted and the lens barrel are each mounted on a chassis independently. If the mounting angle with respect to the camera body changes, the image formation condition of the light-receiving surface of the image sensor deteriorates, and there is a possibility that a high-quality image may not be obtained.

Means to solve the problem In this invention, a flange is provided at the tip of the lens barrel,
An optical image is formed on the light-receiving surface of the image sensor by attaching the image sensor mounting board to the end surface of the tip of the lens barrel, away from anything that transmits external vibrations such as a chassis, or in other words, without using the chassis. The tip of the lens barrel is inserted into a predetermined opening in the camera body, and the flange is fixed to the chassis inside the camera body.

Function The lens barrel is separated from anything that transmits vibrations from the outside, such as a chassis.In other words, the mounting board of the image sensor is mounted without using the chassis, and the image formed by the optical action of the lens barrel is formed on the light-receiving surface of the image sensor. Since the optical axis of the lens does not shift relative to the image sensor even if the angle at which the lens barrel is attached to the camera body changes, the image formation state on the light-receiving surface of the image sensor is not affected. do not have.

EXAMPLE The present invention will be explained below with reference to the drawing of FIG.

The same reference numerals in FIG. 1 and FIG. 2 indicate the same thing.

In the figure, 12 is a lens barrel, and lenses 1 and 1'
It has a built-in flange 14 made of hard rubber at its tip. The axial side of the flange 14 is embedded within a predetermined outer peripheral surface of the tip of the lens barrel 12.

On the end face of the lens barrel 12 on the opening 15 side, a board 5 on which electronic components and the image sensor 4 are mounted is attached with screws 17,
17', and in particular, the light receiving surface B of the image sensor 4 is arranged within the opening 15 of the lens barrel 12. This lens barrel 12 has a predetermined opening 2 in the camera body 10.
0, the flange 14 is fixed to the chassis 13 inside the camera body 10 using screws 16, 16'. In reality, after the lens barrel 12 is fixed to the chassis 13, the vertically divided members are assembled to form the camera body 10 that covers the outside of the chassis 13, and the tip of the lens barrel 12 is connected to the opening of the camera body 10. 20 is inserted.

In this case, the light-receiving surface B of the image sensor 4 is fixed at a position where an image can be well formed by the optical action of the lenses 1 and 1' inside the lens barrel, and the lens barrel may change due to vibrations, aging, etc. Even if the mounting angle with respect to the camera body changes, the imaging state of the light receiving surface of the image sensor is not affected. Further, since the lens barrel 12 is attached to the chassis 13 by a hard rubber flange, vibrations applied to the camera body and the lens barrel are absorbed by the hard rubber, and the effects of vibrations are alleviated.

[Brief explanation of the drawing]

FIG. 1 is a vertical cross-sectional view showing one embodiment of the present invention, and FIG. 2 is a vertical cross-sectional view showing a conventional example according to the present invention. 1, 1'...Lens, 4...Image sensor, 5...
Board, 10...camera body, 12...lens barrel,
13... Chassis, 14... Flange, 15,2
0...opening.

Claims (1)

[Scope of utility model registration request] A flange is provided at the tip of the lens barrel, the tip is inserted into a predetermined opening of the camera body, the flange is fixed to a chassis inside the camera body, and a mounting board for the image sensor is mounted on the end surface of the tip of the lens barrel. A video camera, characterized in that the video camera is mounted away from the camera so that an optical image of the lens barrel is formed on a light receiving surface of the image sensor.