JPH043587A - Rotary device for solid-state image pickup element - Google Patents

Abstract

PURPOSE:To improve the accuracy of alignment by providing a hole of pyramid shape to a rear side of a package equivalent to a center position of an image pickup face. CONSTITUTION:An incident light 13 passes through a lid glass 3 and reaches a chip 2, in which the light is subject to photoelectric conversion and the electric signal is processed in succeeding stages. A hole 10 of pyramid shape is provided to a rear side of a package 4 equivalent to a center position of an image pickup face 14. Then a shaft 8 is mounted in matching with the hole 10 of pyramid shape and the shaft 8, a printed circuit board 6 and the package 4 are driven integrally by turning slightly the shaft 8 at a shaft rotating section 9. Thus, the alignment of the optical axis is attained and the turning direction component in a blur of a video camera is cancelled by turning the shaft. Thus, the accuracy of alignment is improved.

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a rotation device for a solid-state image sensor used in a video camera or the like.

(Summary of the invention) A polygonal pyramidal hole is formed on the back surface (opposite side of the light-receiving surface) of the solid-state image sensor package. If a mechanism for rotating the polygonal pyramid around the hole is added, it is possible to remove the pre-component in the rotational direction of the pre-components of the video camera.

(Prior Art) Conventionally, when a solid-state image sensor is attached to a lens system, as shown in FIG.
Management of b) The optical axis of the lens system was aligned with the center of the imaging surface of the solid-state image sensor.

(Problem to be Solved by the Invention) Conventionally, it was necessary to calculate the center of the imaging surface of the solid-state image sensor by converting from multiple criteria such as the two sides of the outer periphery of the package and the positioning hole, which resulted in a decrease in accuracy and the risk of failure of the solid-state image sensor. The mounting angle structure was complicated.

(Means for Solving the Problems) In the present invention, the center of the imaging surface and the optical axis of the lens can be connected by simply aligning the optical axis of the lens with the hole by making a polygonal pyramidal hole on the back surface of the package corresponding to the center position of the imaging surface. It is easy to match.

It is possible to make a protrusion instead of a hole, but if the protrusion protrudes from the bottom of the back of the package, it may get stuck on the circuit board and make mounting difficult, so a hole is best.

(Function) As shown in Figure 1, the optical axis can be aligned by simply engaging the axis corresponding to the optical axis of the lens with the polygonal pyramidal hole made on the back of the package of the solid-state image sensor, and the axis can be further rotated. This makes it possible to cancel the rotational direction component of the camera shake.

(Example) Hereinafter, an example of the present invention will be described using FIGS. 1 and 2.

Incident light 13 enters the lens 7 from the left direction in the drawing, passes through the glue 3 on the surface of the solid-state image sensor, and reaches the chip 2, where it is photoelectrically converted and subsequently processed as an electrical signal.

As shown in FIG. 2, the package 4 has a polygonal pyramidal hole 10 in the back surface of the package corresponding to the center 14 of the imaging surface.

The shirt 18, the circuit board 6, and the cage 4 are rotated as a unit by attaching the shaft 8 so that it is aligned with the polygonal pyramidal hole and slightly rotating the shaft 8 using the shaft rotating section 9.

If the video camera body is rotated just enough to cancel out the rotational component due to shake, it will remain stationary relative to the subject, and the rotational component of the shake can be canceled out.

Although a polygonal prism can be considered as the shape of the hole, a polygonal pyramid allows alignment at one point at the apex of the polygonal pyramid than a polygonal prism, so the accuracy of alignment can be improved.

(Effects of the Invention) In conventional solid-state imaging device packages, it was common to align the optical axis of the lens with reference to two sides of the outer periphery or a positioning hole, but in the present invention, the lens is placed in a polygonal pyramidal hole. Synutem, which removes the rotational component of video camera shake by simply aligning the optical axes, requires rotating the solid-state image sensor around the optical axis, and all you have to do is align the center of the rotating shaft with the hole in the polygonal pyramid. Since this is completed, adjustment becomes easy and the center of the imaging plane and the center of rotation coincide with each other with high precision.

[Brief explanation of drawings]

FIG. 1 is a schematic diagram of a rotating device for a solid-state image sensor according to the present invention, FIG. 2 is a diagram showing the positional relationship between the center of the imaging surface and the polygonal pyramidal hole of the package in an embodiment of the present invention, and FIG. 3 is a diagram of the conventional system. FIG. 3 is a diagram showing a method of mounting a solid-state image sensor. 2...Chip, 4...Package, 6...Circuit board, lO...Polygonal pyramid hole. Agent Patent attorney Ume 1) Katsu (and 2 others) Figure 1

Claims (1)

[Claims] 1. A rotating device for a solid-state image sensor, characterized in that a polygonal pyramidal hole is provided on the back surface of the package corresponding to the center position of the imaging surface of the solid-state image sensor.