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Camera module

A camera module and camera device technology, applied in image communication, solid-state image signal generator, image signal generator, etc., can solve problems such as inability to measure with high precision, and achieve good productivity

Inactive Publication Date: 2009-03-25
PANASONIC CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, when the ambient temperature changes, the distance G from the subject obtained by the formula (1) cannot be measured with high precision.

Method used

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Experimental program
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no. 1 Embodiment approach

[0056] figure 1 It is an exploded perspective view showing a schematic configuration of the camera module according to the first embodiment of the present invention. figure 2 It is a sectional view along the optical axis of the camera module according to the first embodiment of the present invention.

[0057] The four lenses 11 a , 11 b , 11 c , and 11 d are mutually independent double-sided aspherical single lenses, and are positioned on substantially the same plane by the lens holder 12 . The optical axes 13 a , 13 b , 13 c , and 13 d of the four lenses 11 a , 11 b , 11 c , and 11 d are all parallel to the normal to the principal surface of the lens holder 12 . here, as figure 1 As shown, the direction parallel to the optical axes 13a, 13b, 13c, and 13d is set as the Z axis, the direction perpendicular to the Z axis is set as the X axis, and the direction perpendicular to the Z axis and the X axis is set as the Y axis . The lenses 11 a , 11 b , 11 c , and 11 d are arr...

no. 2 Embodiment approach

[0097] Figure 7 It is an exploded perspective view showing a schematic configuration of a camera module according to a second embodiment of the present invention. Figure 8 It is a cross-sectional view of the camera module according to the second embodiment of the present invention along the optical axis.

[0098] The four lenses 71 a , 71 b , 71 c , and 71 d are mutually independent aspheric single lenses with diffraction gratings on both sides, and are positioned on substantially the same plane by a lens holder 72 . The optical axes 73 a , 73 b , 73 c , and 73 d of the four lenses 71 a , 71 b , 71 c , and 71 d are all parallel to the normal line of the principal surface of the lens holder 72 . Here, if Figure 7 As shown, the direction parallel to the optical axes 73a, 73b, 73c, and 73d is the Z axis, the direction perpendicular to the Z axis is the X axis, and the direction perpendicular to the Z axis and the X axis is the Y axis. The lenses 71a, 71b, 71c, and 71d are a...

no. 3 Embodiment approach

[0110] Figure 9 It is a sectional view showing the plane including the optical axes 73a and 73d of the camera module of this embodiment. The camera module of this embodiment is provided with an actuating mechanism 90 for moving the camera device holder 75 relative to the lens holder 72 along the optical axis. This is different from Figure 8 The camera module of the second embodiment shown. Components that are the same as those in the camera module of the second embodiment are assigned the same symbols, and description thereof will be omitted.

[0111] The actuator mechanism 90 includes a piezoelectric element 91 , a rod-shaped drive shaft 92 arranged such that its longitudinal direction is parallel to the Z-axis, a pair of support blocks 93 a , 93 b facing the Z-direction, and a frictional operation portion 94 . One end of the piezoelectric element 91 is fixed on the supporting block 93 a, and the other end is connected to one end of the driving shaft 92 . The other end ...

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Abstract

A plurality of single lenses (11a-11d) respectively form subject images in a plurality of imaging regions (17a-17d) to synthesize electric signals from the plurality of imaging regions and obtain an image. The plurality of single lenses are held on a lens holder (12), and the plurality of imaging regions are supported on an imaging element holder (16), with the lens holder and the imaging element holder disposed facing each other.

Description

technical field [0001] The invention relates to a thin, small, high-definition compound-eye camera module capable of measuring the distance from an object and maintaining stable performance against ambient temperature changes. Background technique [0002] An imaging module that forms an image of a subject on a solid-state imaging device through a lens system is widely used in digital still cameras, cameras for mobile phones, and the like. In recent years, both higher pixel count and smaller size have been sought for camera modules. Generally, as the number of pixels increases, the resolution of the lens system is required to be improved at the same time, so the thickness of the camera module in the direction of the optical axis tends to increase. In this regard, even if the pixel pitch of the solid-state imaging device is small and the number of pixels is the same, it is possible to reduce the ratio of the lens system by reducing the size of the imaging device, and realize...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04N5/335H04N5/225H04N9/09H04N25/00H04N23/13
CPCH04N5/2254H04N9/045H04N23/55H04N25/134
Inventor 是永继博
Owner PANASONIC CORP