JPH0520076Y2 - - Google Patents

Description

[Detailed explanation of the invention] [Industrial application field] This invention is a CCD (Charge Coupled Device)
The present invention relates to a mounting device for a solid-state image sensor in a color video camera using a solid-state image sensor such as the above.

[Summary of the idea]

The solid-state image sensor mounting device of this invention includes a first metal fitting fixed to the light exit surface of the spectroscopic prism, and a second metal fitting facing the first metal fitting to which the solid-state image sensor is fixed. In the mounting device provided, a packing member is sandwiched between the joint surfaces of the first and second metal fittings, and this packing member prevents the incidence of scattered light and has a dustproof effect. It is something.

[Conventional technology]

Solid-state imaging devices such as CCDs are lightweight and compact, so when configuring a color video camera using such solid-state imaging devices, a spectroscopic prism that separates the image of the subject incident from the imaging lens into three colors is used. It becomes possible to directly attach a solid-state image sensor to the camera.

Fig. 4 is a perspective view showing a mounting device for a solid-state image sensor (Japanese Patent Application No. 59-257068) proposed earlier by the present applicant.
A spectroscopic prism for separating light into three directions along a line is shown.

This spectroscopic prism 1 is composed of, for example, three prisms, and these prisms are fixed at a predetermined position by a support base 2.

The light separated in the G direction is received by a solid-state image pickup device 3G placed on the light exit surface of the spectroscopic prism for photographing a green image.

4G and 5G indicate first and second metal fittings for attaching the solid-state image sensor 3G to the light exit surface of the spectroscopic prism 1.

As clearly shown in the exploded perspective view of the metal fittings shown on the light exit surface in the R direction, the first and second metal fittings 4G and 5G have a solid state on one surface of the first metal fitting 4R. A dowel 6R for positioning an image sensor (not shown) and a screw hole 7R for mounting are formed, and a leg 8R for joining with the leg 9R of the second metal fitting 5R is provided at the periphery. 8R... is provided.

10R and 11R indicate opening windows for allowing the solid-state imaging device screwed to the first metal fitting 4R to receive the light output from the light exit surface of the spectroscopic prism 1, and 12R indicates the first and second windows. A seal for filling the gap between metal fittings 4R and 5R is shown.

Note that although the solid-state image sensor and the mounting metal fittings in the B direction are omitted, the above-described mounting metal and the solid-state image sensor are also attached to this portion.

According to the mounting structure of such a solid-state image sensor,
As shown in FIG. 5, the first metal fittings 4G, 4R, 4
Solid-state image sensor 3G, 3 attached to B
A jig 13R movably supporting R and 3B,
13G and 13B, and when a standard test image is incident on the spectroscopic prism 1, each solid-state image sensor 3
jigs 13R, 13G, 1 so that the chroma image signals obtained from R, 3G, 3R match.
3B to adjust the registration, and at this adjusted position, determine the joining position of the first metal fittings 4G, 4R, 4B and the second metal fittings 5G, 5R, 5B,
Legs of each metal fittings 8R, 9R, 8G, 9G, 8B, 9
B is welded by soldering etc. to each solid-state image sensor 3.
R, 3G, and 3B can be fixed to the light exit surface of the spectroscopic prism 1 at a position where the registration is the best.

[Problem that the invention attempts to solve]

However, the first and second metal fittings 4 (R, G,
When B) and 5 (R, G, B) are joined in this way, a slight gap is created between the mutual joint surfaces, so it is necessary to apply a seal 12 to fill this space, which reduces production. In addition to deteriorating the performance, the seals 12 (R, G, B) cannot be reused, resulting in an increase in cost.

[Means for solving problems]

This invention was made in order to solve this problem, and by attaching a packing member made of an elastic material between the first and second metal fittings, it is possible to attach the packing member to the spectroscopic prism. This has added dustproof and anti-scattering effects.

[Effect]

A packing member having a flange surface that covers at least the end face of the opening window of the second metal fitting is attached to the gap surface where the first and second metal fittings are joined. It is possible to prevent the generation of scattered light in which the emitted light is reflected by the end face of the aperture window and enters the solid-state image sensor.

〔Example〕

FIG. 1 is an exploded perspective view of a mounting device for a solid-state image sensor, which is an embodiment of this invention.
2 is a spectroscopic prism, 22 is a support base for configuring the spectroscopic prism 21 by fixing a plurality of prisms in a predetermined position, and is fixed to a housing, etc.; 23 is a solid-state imaging device fixed to a first metal fitting 24; Element 25 indicates a second metal fitting fixed to the light exit surface of the spectroscopic prism 21.

As described above, the first and second metal fittings 24 and 25 have four legs 24A and 25A protruding almost horizontally for connecting them to each other, and the central portion allows light to pass through. Opening window 24 for
B, 25B are formed.

Reference numeral 26 indicates a packing member for light shielding and dustproofing that is arranged to be sandwiched between the joining surfaces of the first and second metal fittings 24 and 25, and 27 indicates a packing member for attaching the solid-state image sensor 23 to the first metal fitting 24. Indicates the screws to be fixed.

Note that the state in which these are fixed to the spectroscopic prism 21 is indicated by the reference numeral 28 placed on the other optical path of the spectroscopic prism 21.

Leg portions 24 of the first and second metal fittings 24 and 25
As shown in FIGS. 1 and 2, the opposing surfaces of A and 25A are pre-soldered as shown by diagonal lines to improve the solder wettability only on the opposing surfaces A. A solder resist layer is applied to the parts to prevent excess solder from adhering.

FIG. 3 is an enlarged perspective view of the packing member 26, with a portion thereof in cross section.

As you can understand from this diagram, packing member 2
6 has an opening having substantially the same shape as the opening window 25B of the second metal fitting 25, and is positioned by a protruding flange portion 26A formed around the opening. Then, the pleats 26B that are slightly swollen toward the opening rise upwards, and the opening window 2 of the first metal fitting 24 (not shown) is fitted onto the upper surface of the pleats 26B.
It is formed so as to come into pressure contact with the peripheral portion of 4B.

Therefore, it is possible to effectively prevent dust and the like from entering the opening windows 24B and 25B from the joint surfaces of the first and second metal fittings 24 and 25, and at the same time, the opening window of the second metal fitting 25 can be effectively prevented. The flange portion 26A from which the light reflected by the end surface 25C protrudes, and the fold portion 2
6B has a function of preventing the light from entering the solid-state image sensor.

[Effect of idea]

As explained above, the solid-state image sensor mounting device of this invention includes a first metal fitting attached to the light exit surface of the spectroscopic prism and a second metal fitting to which the solid-state image sensor is fixed. Since a packing member having a flange that covers at least the end face of the opening window of the second metal fitting is attached to the middle part of the second metal fitting, it has the effect of preventing dust and scattering light from entering. There is. Further, since this packing member does not use adhesive, it is easy to attach and has the advantage that it can be reused for adjustment after repair.

[Brief explanation of drawings]

Fig. 1 is an exploded perspective view showing a mounting device for a solid-state image sensor which is an embodiment of this invention, Fig. 2 is a perspective view showing a part of the second metal fitting, and Fig. 3 is a perspective view showing a packing member. , FIG. 4 is a perspective view showing a mounting device for a solid-state image sensor previously proposed by the present applicant, and FIG. 5 is a side view of a spectroscopic prism. In the figure, 21 is a spectroscopic prism, 22 is a support base,
23 is a solid-state image sensor, 24 is a first metal fitting, 25 is a second metal fitting, 24A and 25A are leg portions, and 26 is a packing member.

Claims (1)

[Claims for Utility Model Registration] A solid-state imaging device is fixed to a first metal fitting having an opening window at a position corresponding to the light incidence part of the solid-state imaging device, and a light exit surface of a spectroscopic prism is fixed to the spectroscopic prism. a second metal fitting having an opening window at a position corresponding to the light exit surface of the prism; and a flange portion having an opening at a position corresponding to the opening window of the second metal fitting and standing from near the end face of the opening. a packing member, the packing member is arranged between the first metal fitting and the second metal fitting, and the flange portion of the packing member covers at least a side end surface of the opening window of the second metal fitting. A mounting device for a solid-state image sensor, wherein the first metal fitting and the second metal fitting are fixed.