JPH0721006Y2 - Solid-state image sensor mounting mechanism in camera - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial field of application] The present invention relates to a camera using a solid-state imaging device such as a CCD.

[Prior Art] Today, in a camera using a solid-state image sensor such as a monitor camera, as shown in FIG.
Image sensor package using the hanging glass 22 on the front of 23
The image pickup device sealed by 21 is attached to the image pickup substrate 25, and as shown in FIG. 9, a screw 29 is attached to a mounting boss 17 provided on the rear surface of the front plate 13 of the camera front portion 11 for fixing the lens mount 14, and the image pickup is performed. An image sensor is mounted in the camera so that the substrate 25 is fixed.

The camera front part 11 is fixed to the camera body part by a frame body 15 extending rearward from the periphery of the front plate 13, and is screwed into the front plate 13 by a flange back adjustment screw 18. The lens is screwed to the fixed lens mount 14.

By the way, in such a camera, in order to obtain a good image, the optical axis of the lens attached to the lens mount 14 and the image pickup surface 23 of the image pickup element fixed to the image pickup substrate 25 are used.
It is necessary to fix the image pickup board 25 in the camera at a position that matches the center of the
17 is a stupid hole, and by loosening the screw 29, the imaging board 25
The fixed position of can be adjusted.

[Problems to be Solved by the Invention] As described above, when the image pickup board is attached to the camera front part, the attachment hole provided in the image pickup board is made large, thereby making it possible to adjust the image pickup board attachment position. It requires skill to loosen the screw for adjusting, adjust the position of the image pickup substrate and tighten the screw, and it is difficult to improve the production efficiency.

Also, after the camera is assembled, if the center of the imaging surface and the optical axis of the lens are found to be misaligned during the final inspection, the camera front part must be removed and readjustment must be performed. Had a difficult drawback.

[Means for Solving the Problems] According to the present invention, one slide fixing portion is provided inside the upper, lower, left, and right frame bodies in the camera front portion, and a holding spring is provided at least inside the upper, lower, left, or right frame bodies. The peripheral edge of the image pickup board is held by the slide fixing part and the presser spring, and the position adjustment is made by penetrating the frame vertically and horizontally in the frame of the camera front part and projecting the tip into the slide fixing part. A screw is provided, and a pressing member having a tip protruding from the slide fixing portion is provided in the slide fixing portion. The tip of the pressing member is brought into contact with the upper, lower, left, and right side surfaces of the image pickup device package, and the tip of each of the position adjusting screws and the respective An elastic body is interposed between the pressing member and the rear end.

[Operation] In the solid-state image sensor mounting mechanism according to the present invention, since the peripheral edge of the image pickup substrate is held by the slide fixing portion and the holding spring provided inside the frame, if the pressing force of the holding spring is weakened, the image pickup is performed. The image pickup substrate can be moved vertically and horizontally while maintaining the element perpendicular to the optical axis of the lens.

Further, the tip of a pressing member provided in the slide fixing portion is brought into contact with the upper, lower, left and right side surfaces of the image pickup device package fixed to the image pickup board, and a position adjusting screw is provided at the rear end of the pressing member via an elastic body to adjust the position. Since the screw penetrates the frame, the position adjusting screw can be rotated from the outside of the frame to move the pressing member via the elastic body and change the position of the image sensor.

[Embodiment] The first embodiment of the solid-state image sensor mounting mechanism according to the present invention is as follows.
As shown in FIGS. 3 and 4, a main body portion 33 having a storage hole 36 in which a pressing member is slidably incorporated, and a holding spring which is lateral to the main body portion 33 and is substantially parallel to the side surface of the main body portion 33. Four positioning members 31 formed with are used.

The positioning member 31 has a box-shaped main body 33 vertically from a flat plate-shaped base 32, has a rectangular storage hole 36 that opens upward in the main body 33, and An adjusting screw hole formed on the bottom by penetrating the base 32 and forming a female screw
39, which has a flat plate-like protrusion substantially parallel to one side surface of the main body 33.
The base portion 32 has a base portion 32, and the holding groove portion 43 is provided between the projecting portion 46 and the main body portion 33, and the projecting portion 46 is used as a pressing spring, and the side surface of the main body portion 33 facing the projecting portion 46. Is used as the sliding fixing portion 41.

Further, as shown in FIG. 5, the accommodating hole 36 formed in the main body portion 33 has a rectangular parallelepiped shape, and a pressing member 51 having an elastic body insertion hole 53 therein is inserted therein. Aligned with the storage hole 36 of the positioning member 31, the size is such that it can slide smoothly in the axial direction of the storage hole 36.
55 is provided.

Therefore, the pressing member 51 is inserted into the storage hole 36 of the positioning member 31, and the positioning member 31 is held vertically and horizontally as if the peripheral edge of the imaging substrate 25 is inserted into the holding groove portion 43 of the positioning member 31. , And the four positioning members 31 are attached to the upper, lower, left, and right peripheral portions, one at a time, and the imaging substrate 25 is inserted into the camera front section 11.
The base portion 32 of the positioning member 31 is moved to the camera front portion 11 by the 49.
It is fixed to the frame body 15 of.

In addition, a concave portion 19 corresponding to the shape of the base portion 32 of the positioning member 31 is formed on the inner surface of the frame body 15 of the camera front portion 11, and the base portion 32 of the positioning member 31 is inserted and fixed in the concave portion 19. At this time, the holding groove portion 43 of each positioning member 31 is parallel to the front plate 13 of the camera front portion 11, and thus the sliding fixing portion.
The image pickup substrate 25 held between 41 and the projecting portion 46 which is a presser spring.
The mounting position of the positioning member 31 is determined so that the lens is parallel to the front plate 13 of the camera front section 11.

Further, the frame body 15 of the camera front portion 11 is provided with a through hole 16 coaxial with the adjustment screw hole 39 formed in the positioning member 31 inserted and fixed in the recess 19 on the inner surface of the frame body 15. A spring material, which is an elastic body 57, is inserted from the hole 16 into the elastic body insertion hole 53 of the pressing member 51, and further, the position adjusting screw 58 is inserted and the position adjusting screw 58
Is screwed into the adjusting screw hole 39 of the positioning member 31.

In this way, as shown in FIGS. 1 and 2, the pressing member 51 is brought into contact with the upper, lower, left and right side surfaces of the image pickup device package 21, and the pressing member 51 can be slid in the axial direction by the housing hole 36. However, shaking is prevented, and an elastic body 57 is interposed between the position adjusting screw 58 provided at the rear end of the pressing member 51 and the pressing member 51 so that the position adjusting screw 58 penetrates the frame body 15. Like,
Further, the image pickup substrate 25 is sandwiched by the slide fixing portion 41 and the projecting portion 46 which is a pressing spring at the upper, lower, left and right peripheral edges thereof, so that the frame body is
The structure attached to 15.

Therefore, the image pickup substrate 25, to which the image pickup device package 21 having the image pickup surface 23 formed by the image pickup device is fixed, is sandwiched on all four sides by the slide fixing portions 41 and the pressing springs. It is possible to move the elastic body 57 up and down and left and right without changing the direction so as to deform and compress the elastic body 57.
Since the position adjusting screw 58 that supports the rear end of the frame 57 is provided so as to penetrate the frame body 15, the position adjusting screw 58 is rotated from the outside of the frame body 15 to screw the position adjusting screw 58 into the frame body 15. When inserted, the image pickup surface 23 can be translated in a direction perpendicular to the optical axis of the lens so that the elastic body 57 is compressed and deformed.

In this way, by appropriately setting the pressing force of the protruding portion 46 serving as a pressing spring and the strength of the elastic body 57 interposed between the position adjusting screw 58 and the pressing member 51, the outside of the camera front portion 11 can be obtained. The image pickup surface 23 formed on the image pickup element package 21 can be moved in parallel in the vertical and horizontal directions only by rotating the position adjusting screw 58, and it is extremely easy to align the center of the image pickup surface 23 with the optical axis position of the lens. Becomes

Further, in the above-described embodiment, the projecting portion 46 serving as the presser spring and the storage hole 36 are provided.
The positioning member 31 that is integrated with the main body 33 having the slide fixing portion 41 is used, but as another embodiment, the sixth embodiment
As shown in the figure, a cylindrical body 35 is formed by forming an inward projecting portion 37 at the tip of the storage hole 36 and preventing the pressing member 51 having the outward projecting portion 54 from coming off. The pressing member 51 is inserted from the rear, and the screw holes 38 provided on the left and right sides of the cylindrical body 35 are used to attach the pressing member 51 to the inner surfaces of the frame body 15 in the upper, lower, left, and right directions.
A female screw is formed on the inner surface of the through hole 16 provided in the frame body 15.
After inserting the elastic body 57 into the elastic body insertion hole 53 of the pressing member 51 which is inserted into the cylindrical body 35 attached to the upper, lower, left and right inner surfaces of 15, the position adjusting screw 58 is screwed into the through hole 16 of the frame body 15. Well,
As shown in FIG. 7, after inserting the image pickup device package 21 between the upper, lower, left and right pressing members 51, the L-shaped holding member 45 is framed so that the holding spring is brought into contact with the rear surface of the peripheral edge of the image pickup substrate 25. It may be screwed to the inner surface of the body 15.

Further, the holding member 45 is provided inside the frame 15 inside the imaging substrate 25.
In the case where the width of the presser spring is wide, it is not limited to the case of arranging in four positions on the left, right, top and bottom, and it is arranged only at two positions inside the frame body 15 as one position at each of the upper and lower sides or one position at each of the left and right sides. There is a case where the imaging substrate 25 is slidably attached to the frame body 15 by holding the upper and lower sides or the right and left sides of the frame. Further, the holding member 45
After loosely tightening the mounting screw 47, the image pickup substrate 25 is slidably held, and after adjusting the position of the image pickup substrate 25, that is, the position of the image pickup surface 23, firmly tighten the attaching screw 47 so that the image pickup substrate 25 does not move. It is also possible to hold it.

Further, in the above-described embodiment, as shown in FIG. 2, concave grooves 28 are formed in the upper, lower, left and right side surfaces of the image pickup device package 21, and the projection 55 provided at the tip of the pressing member 51 is provided with the projection 55.
Although the temporary positioning between the pressing member 51 and the image pickup device package 21 is facilitated by inserting the pressing member 51 into the groove 28, the tip end of the pressing member 51 is simply a smooth surface and is simply an image pickup device package.
It is also possible to configure to press the side surface of 21.

[Advantages of the Invention] In the solid-state image pickup device mounting mechanism according to the present invention, the image pickup surface is orthogonal to the optical axis of the lens by holding two or four points on the peripheral edge of the image pickup board by the sliding fixing portion and the pressing spring. Mounted inside the camera front part so that it can move in parallel with each other, a pressing member via elastic body is brought into contact with the upper, lower, left and right side surfaces of the image pickup device package, and is applied to the pressing member via each elastic body by a position adjusting screw penetrating the frame body. Since the structure is such that the pressing force can be adjusted, the image pickup surface of the image pickup device package mounted inside the frame body can be moved from the outside of the frame body, and the adjustment of aligning the center of the image pickup surface with the optical axis of the lens can be easily performed. it can.

[Brief description of drawings]

1 and 2 are a vertical sectional side view and a partial sectional front view showing a mounting mechanism of a solid-state image pickup device package according to the present invention, and FIGS. 3 and 4 are the positioning used in the first embodiment. The members are also partially sectional side views and top views, FIG. 5 is a perspective view of the pressing member, FIG. 6 is a vertical sectional front view showing the tubular body and the pressing member used in the second embodiment, and FIG. FIG. 8 is a partial cross-sectional side view showing a second embodiment, FIG. 8 is a front view of a conventional solid-state imaging device, and FIG. 9 is a view showing a conventional mounting mechanism. 11 …… Camera front part, 13 …… Front plate, 15 …… Frame body,
16 ... Through hole, 21 ... Imaging element package, 23 ... Imaging surface, 25 ... Imaging substrate, 31 ... Positioning member, 33 ... Positioning member main body, 35 ... Cylindrical body, 36 ... Storage hole , 39 …… Adjustment screw hole, 41 …… Slide fixing part, 45 …… Clamping member, 46 ……
Projection part, 51 ... Pressing member, 53 ... Elastic body insertion hole, 57 ...
Elastic body, 58 ... Position adjustment screw.

Claims (1)

[Scope of utility model registration request] 1. A camera front part having a frame body extending rearward from a peripheral edge of a front plate for fixing a lens mount, having a slide fixing part inside the upper, lower, left and right frame bodies, and at least an image pickup substrate. A pressing spring that presses the upper, lower, left, and right peripheral portions against the sliding fixing portion to hold the image pickup substrate between the sliding fixing portion is provided inside the frame body, and the four upper, lower, left, and right sides of the frame body are provided. Has position adjusting screws each of which penetrates the frame body in the direction to project the tip into the slide fixing portion, and the tip of each position adjusting screw can slide in the slide fixing portion via each elastic body. A solid-state image sensor mounting mechanism for a camera, characterized in that each of the pressing members is provided with a pressing member, and each tip of the pressing member projects from the sliding fixing portion and abuts on the upper, lower, left, and right side surfaces of the image sensor package. .