Dedicated magnifier for digital camera

Abstract

The invention discloses a dedicated magnifier for a digital camera. The magnifier is characterized in that the magnifier comprises a magnifying lens, a light source, sight glass and a shell; the magnifying lens, the light source and the sight glass are fixed to the shell; the magnifying lens is a combined lens formed by two flat convex lens with different curves; when the planes of the two flat convex lenses are opposite, the amplifying times of the combined lens are more than or equal to 5; the light guide part of the light source is a foggy LED; the diameter of the LED is more than or equal to 5mm. The dedicated magnifier belongs to the apparatus cleaning field, is suitable for observing the dust on the lens surface of an apparatus and especially suitable for observing the dust on a surface of an image sensor of a digital single lens reflex camera and in a cavity. The dedicated magnifier aims at eliminating halos generated on a CCD/CMOS surface of the digital camera and clearly observing the dust and a cleaning degree of the surface of the image sensor of the digital single lens reflex camera. The magnifier is simple in structure and the halos generated on the surface of the digital camera are effectively eliminated.

Description

technical field [0001] The invention relates to a special magnifying glass for a digital camera, which belongs to the field of instrument cleaning and is suitable for observing the dust on the mirror surface of the instrument, especially for observing the dust on the surface of an image sensor of a digital single-lens reflex camera and in a cavity. Background technique [0002] Digital cameras do not use traditional photosensitive film to record images, but use photoelectric conversion sensors, CCD or CMOS. When changing the lens of a digital SLR camera, it is easy to bring dust in the air into the body and attach to the surface of the image sensor. The dust will cause small spots in the image and damage the image quality. Since fine dust cannot be observed with the eyes, the existing inspection method is to judge by observing the captured image. This method is not easy to detect dust accurately and in time, and cannot find the defect of dust on the surface of the image sens...

AI Technical Summary

Problems solved by technology

When changing the lens of a digital SLR camera, it is easy to bring dust in the air into the fuselage and attach it to the surface of the image sensor. The dust will cause small spots in the image and damage the picture quality

Since fine dust cannot be observed with the eyes, the existing inspection method is to judge by observing the captured images. This method is not easy to accurately detect dust in time, and cannot find the shortcomings of dust on the surface of the image sensor.

Although the dust can be observed with the help of a magnifying glass with an active light source, due to the special structure of the image sensor, the light will produce a halo on the surface and cannot be seen clearly, and effective observation cannot be carried out

Images