How to convert the actual target size of CCD/CMOS camera image sensor?/ 2, 1/3, 1/4, 2, 3, 1/2.5, 1/2.7 target surface size calculation method, etc

Among them:

AXIS Q1659 image sensor target: 22.4 x 15.0 mm APS-C CMOS sensor,EF/EF-S lens

AXIS Q1635 image sensor target surface: 1/2" progressive scan RGB CMOS

AXIS Q1645 image sensor target surface: 1/2" progressive scan RGB CMOS

CCD/CMOS image sensor size 1/2, 1/3, 1/4 actual size

1 inch -- target dimensions 12.7mm wide * 9.6mm high, 16mm diagonal.

2/3 "-- the target is 8.8mm wide by 6.6mm high, with a diagonal of 11mm.

1/2 inch -- the target surface shall be 6.4mm wide by 4.8mm high and 8mm diagonal.

1/3 inch -- the target is 4.8mm wide by 3.6mm high, with a diagonal of 6mm.

1/4 inch -- The target is 3.2mm wide by 2.4mm high, with a diagonal of 4mm.

It's in inches. One inch is 2.54 centimeters.

The 1/2 size refers to the length of the diagonal, not the sides.

CCD size is generally expressed in inches, 1/2 is 1/2 inch, is the diagonal size.The target size is the CCD size, the size of the digital sensor CCD, and an inch is 16 millimeters instead of the usual 25.4 millimeters.The usual aspect ratio is 4:3, 1/2 inch diagonal is 8mm, 4:3 ratio, length and width is 6.4 by 4.8.The same can be said for digital camera sensors.

1/2.5 "CCD length 5.12mm width 3.84mm diagonal length 6.4mm.Why is the unit size of digital camera CCD "inch" not 1 inch =25.4mm in the conventional sense? The outer diameter of the vacuum tube of the early VIDEO recorder is adopted here. However, excluding the thickness of the glass tube, the imaging area is actually only 16mm, namely 1" =16mm in the CCD specification.

Most small CCDS have an aspect ratio of 4:3

1 inch (in)=2.54 cm (cm)

The inch is a unit of length used in the United Kingdom (UK) and its former colonies, generally 1in=2.54cm, in the British system, 12 inches is one foot and 36 inches is one yard.

How the inch came about: The "inch" (abbreviated as in.) is the Dutch word for thumb, and an inch is the length of one section of the thumb.Of course, people's thumbs vary in length.In the 14th century, King Edward II enacted the standard legal inch.The rule was to choose three of the largest grains from among the ears of barley and line them one inch in length.

Inch conversion:

1 mil = 1/1000 inch = 0.00254 cm = 0.0254 mm.

1 inch = 1000 mil = 2.54 cm = 25.4 mm.

In the British system, 12 inches are one foot and 36 inches are one yard.

1 inch =16mm (digital sensor).

Application in inches:

In building materials, the inch, rather than the market inch, is used to weigh pipes.

In liquid crystal display, the specification has 17 inches, 19 inches, 22 inches and so on commonly.In mobile phones, the screen size is now generally 4.0 inch, 4.2 inch, 4.5 inch, 4.7 inch, 4.8 inch, 5.0 inch, 5.2 inch, 5.5 inch, 5.7 inch, 6.44 inch, etc.The typical screen size on a tablet is 7.9 inches, 9.7 inches or 12.9 inches.The size of a display screen is usually measured in inches, measured diagonally.Inches are commonly referred to as "inches" here.