Skin image collection device and use method thereof

Abstract

The invention discloses a skin image collection device and a use method thereof. The skin image collection device comprises a light source, an optical imaging system, an image sensor and a signal processing circuit and is characterized in that the optical imaging system comprises a first lens group, a second lens group, a third lens group and a lens group moving component which share one optic axis; the position of the first lens group is immobilized at the front end of the optic axis; and the positions of the second lens group and the third lens group can be changed through the lens group moving component. The skin image collection device has the beneficial effects that an optical work distance of the skin image collection device is fixed; and when image magnification times are continuously changed, the device has no need of leaving from the skin, so as to avoid the phenomenon of an unclear image caused by image shaking due to hand shaking.

Description

technical field [0001] The invention belongs to the field of medical devices, and in particular relates to a skin image acquisition device and a using method. Background technique [0002] Dermoscopy digital image analysis technology is a non-invasive skin disease diagnosis tool developed in recent years, which is used to detect the internal mechanism and lesions of skin tissue that are invisible to the naked eye. Usually a dermatoscope consists of a hand-held skin image acquisition device and a computer. The hand-held skin image acquisition device is used for skin optical imaging and image sensing acquisition, and the computer is used for skin image processing and display. [0003] In the use of dermatoscopes, it is often necessary to adjust different image magnifications for different lesion sites. The optical imaging system of the current skin image acquisition device uses a lens group. When the image magnification is changed, the lens group moves as a whole, and the op...

AI Technical Summary

Problems solved by technology

The optical imaging system of the current skin image acquisition device uses a lens group. When the image magnification is changed, the lens group moves as a whole, and the optical working distance (the distance from the lens to the skin) changes. The skin image acquisition device often has to leave the skin. The skin image acquisition device is a handheld device without any support. Hand shaking is inevitable, and hand shaking will inevitably cause image shaking, resulting in unclear images

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