Camera device and camera lens

Abstract

The object of the invention is to easily manufacture a shutter member without being constrained by an imaging lens and an image pickup element and to protect the imaging lens when a user does not photograph. The shutter member 14 is disposed on the side of an object of the imaging lens 25. Then, the shutter member is easily designed and manufactured, while the shutter member is not constrained by the imaging lens and the image pickup device, thereby attaining the miniaturization and thinness of the shutter member, accordingly attaining the miniaturization and thinness of the entire camera. When the camera is not used for photographing, the shutter member protects the imaging lens. In this case, arranging the shutter member as a different configuration on the side of the object of an imaging unit 13 obtained by uniting the imaging lens 25 with the image pickup device into one body makes it easy to adjust the position of the shutter member with respect to the imaging unit. This facilitates assembling work of the imaging unit and the shutter member with high accuracy, thereby improving the productivity.

Description

field of invention [0001] The present invention relates to a digital camera (DSC), a card camera (camera), a portable phone, a surveillance camera, a PC camera (camera attached to a personal computer), and also relates to a small High-performance compact camera lenses used in camera devices. Background technique [0002] For example, in an imaging device used in a cassette camera, an imaging lens, an imaging element such as a CCD, and a mechanical shutter member are provided. The image of the object to be photographed is captured by the imaging lens and projected onto the imaging element, and the projected image is converted into an electrical signal by the imaging element and taken out as image data. [0003] Here, if you pay attention to the imaging lens of the existing digital video camera (DSC), you will find that it is similar in structure to the imaging lens for VTR because it uses a CCD to capture images with high resolution. However, in terms of resolution and imag...

AI Technical Summary

Problems solved by technology

This is because the color filter on the CCD is located a little away from the imaging surface, and when the light is incident, the actual aperture efficiency is reduced, so especially in the recent high-sensitivity CCD, most of the micro The lens array is arranged directly in front of the imaging surface, and the same is true at this time. If the exit pupil is not far enough away, the efficiency of the peripheral aperture will decrease.

[0009] 3. Requires a large back focus

[0012] However, in such an imaging device, since the shutter unit is disposed between the imaging lens and the imaging element, the shutter unit is restricted by the imaging lens and the imaging element, so the design and manufacture of the shutter unit are complicated and cumbersome, and must be On the basis of aligning the imaging lens and imaging element to the correct position on the optical axis, the position of the shutter component must also be aligned between them, so high precision is required for the assembly of the imaging lens, imaging element, and shutter component , there are problems such as troublesome assembly operations and poor productivity

[0013] And, in this imaging device, since the shutter member is arranged between the imaging lens and the imaging element, the imaging lens is also exposed when not in use, and it is easy to make the imaging lens dirty or damaged for this reason. Therefore, in order to protect the imaging lens, a Requires a lens cap, which creates a problem with increasing parts count

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