How does the camera image?

The imaging principle of the camera is:

The lens of the camera is equivalent to a convex lens, and the light from the object passes through the lens of the camera and converges on the film to form an inverted and reduced real image. Compared with traditional cameras, traditional cameras use "film" as the carrier of recording information, and the "film" of digital cameras is its imaging photosensitive device, which is integrated with the camera and is the heart of digital cameras. Digital cameras use photosensitive devices to convert optical signals into electrical signals, which are recorded on memory cards after analog-to-digital conversion.

Like eyes, there are all kinds of things in the imaging process of traditional cameras:

1.

Focus the scene image on the film through the lens.

2.

The photosensitizer on the film changes with the light.

3.

The changed photosensitive agent on the film is developed and fixed by the developer.

The imaging process of an image digital camera with opposite or complementary colors to the scene;

1. The light passing through the lens is focused on CCD or CMOS.

2.CCD or CMOS converts light into electrical signals.

3. Processed by the processor and recorded in the memory of the camera.

4. The image is formed by computer processing and electro-optical conversion of display, or printed by printer.

The specific process: the digital camera focuses the image on the imaging element CCD/ CMOS through the optical system, converts the photoelectric signal of each pixel into a digital signal through the A/D converter, and then processes it into a digital image through the DSP and stores it in the storage medium. The light enters the camera from the lens, and the CCD performs color filtering and light sensing (photoelectric conversion) to "decompose" the photographed object into pixels according to a certain arrangement. These pixels are transmitted to the "analog-to-digital converter" in the form of analog image signals, converted into digital signals, transmitted to the image processor, processed into real images, and then compressed and stored in the storage medium. The reflected light of the scene is converged on the film by the lens to form a latent image, which is the result of the chemical reaction between the light and the emulsion on the film. After development and fixing, an image is formed. The principle of digital camera imaging is different from that of film imaging. It images on a CCD through a lens, and the CCD photoelectrically converts to generate a video signal, and then generates an image through the photoelectric conversion of a display screen.

Edited on 20 18-03-30

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What is the imaging principle of the camera?

7 Zan 1 play

How does the camera work?

The camera actually uses the imaging principle of convex lens. A convex lens, let the focal length be f (the convex lens can converge light, the point where the light converges is called the focal point, and the distance from the focal point to the center of the convex lens is the focal length), and the object distance (the distance from the object to the center of the convex lens) be u, then when u >; 2f. Put an opaque object on the other side of the convex lens, which is called a light screen in physics. On the light screen, you can get an image exactly like the real thing, but this image is inverted and reduced. That's how cameras work. There will be a convex lens in front of a traditional camera, which is what we call a lens. This convex lens plays the above role. Behind the convex lens is a darkroom, in which there is a negative film coated with photosensitive substances. The negative is in a dark room, so it is not sensitive because it is sealed and dull. Press the shutter, the shutter opens, and the light enters the darkroom through the convex lens, forming an inverted reduced image on the negative. Shutter opening and closing speed is very fast, the fastest is only one thousandth of a second. Professional cameras can also control the opening and closing time of the shutter, so that the film can be exposed for a long time to achieve the desired effect. Because the focal length of the convex lens used in the camera is relatively small, the subject can always be out of twice the focal length, and an inverted reduced image can always be formed on the negative. There is a difference between a fool camera, a digital camera and a professional camera. The fool machine has only one convex lens, so it can't adjust the exposure time and doesn't need any settings. This is a camera that a fool can use. But in this case, you can't shoot professionally. The difference between digital camera and traditional camera is that the negative film is replaced by ccd. Ccd is an electronic component. When light shines on it, it can be converted into electrical signals. When the lens images an object on the ccd, the ccd converts it into an electrical signal, and the current photo is saved as soon as the shutter is pressed. Professional cameras generally use negatives, but their specialty lies in shutter, aperture and lens. Professional cameras can control the opening and closing time of the shutter to make the exposure time of the film longer or shorter. Aperture is to control the intensity of external light entering the darkroom. In the case of strong external light, if you shoot with a fool machine, the photo will be too bright to see clearly, but a professional camera can control the aperture and reduce the exposure intensity of the negative. The lens of a professional camera is not just a convex lens, but a group of convex lenses. The distance between these convex lenses can be controlled to adjust the focal length, so that the image on the negative can always be the clearest. You can also install wide-angle lenses, color filters and other instruments on the lens. Wide-angle lens makes the shooting range wider, and color filter makes the photo color better. For example, in landscape painting, if you want to make the negative greener and the color effect stronger, you should install a green filter on the lens to let more green light pass through the lens. It is also wrong that pinhole imaging mentioned above cannot be applied to cameras. Because of the linear propagation of light, if you poke a hole in an opaque object, the light reflected by an object larger than this hole cannot pass through the hole horizontally, but the light from the upper part of the object passes through the hole downwards, and the light from the lower part passes through the hole upwards, and a light screen is placed on the other side, so that an inverted image can be obtained. Therefore, pinhole can also play the role of convex lens to some extent. /me? tn = baiduimage & ampct=20 1326592。 lm=- 1。 Cl = 2 & word =% D5% EB% BF% D7% C9% E3% D3% B0 These are photos taken by pinhole imaging principle.

17 likes 2,918 to browse 20 19-08- 19.

What is the imaging principle of the camera?

1. framing: the light (image) passes through the lens, and is projected on the reflector placed at 45 degrees, refracted on the pentagonal mirror at the top of the machine, and then refracted twice by the pentagonal mirror and projected on the framing eyepiece. The photographer saw an upright image like the real thing through the eyepiece. 2. Shooting: The photographer presses the shutter, and the mirror rotates upward, opening the light path from the lens to the film (or CCD or CMOS). At the same time, the reflector blocks the light path to Wuling lens, preventing stray light from entering the camera in the opposite direction through the eyepiece and affecting imaging. At this time, the aperture shrinks to the preset value, the shutter opens, the image recording medium records the image, the shutter closes, the aperture returns to the maximum, and the reflector returns to prepare for the next framing and shooting. In SLR cameras, the principle of film SLR and digital SLR is the same, but the media for recording images are different. Of course, due to different recording media, their structures are also quite different. The above only describes the light path of SLR camera, as well as the function of aperture, the control of shutter, the control of flash, the combination of metering and exposure, ranging and focusing. It can't be described here. There is a double reflection camera. Just like seagulls 4A and 4B in China. What people used to call the "square mirror box" is. Double-reflex camera adopts two lenses, which are placed up and down. Generally, photos are taken on the camera and taken on the camera. Because there is no five-pointed star lens, the image seen by the photographer is upside down and left and right, which is inconvenient to operate. In addition, because the dual-mirror camera uses two lenses to view and shoot separately, there will be a "parallax" problem, that is, the range of images seen by the photographer is not the range of shooting records. SLR camera completely solved this problem, because it completed the framing and shooting through one lens, and basically realized "what you see is what you get", which is one of the reasons for the rapid development of SLR. There is also a camera called "paraxial", which takes a view through a special viewing window on the fuselage and records the image with the lens. Because it is not through a lens to complete the framing and shooting, that is, there is also the problem of "parallax". Is this ok?

5 likes 83 browse 2020-05-07

The imaging principle of the camera-to find the answer, just "ask"

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What is the principle of camera imaging? The simpler the better, the easier it is to understand.

1. The lens of the camera is a convex lens. The light emitted by the object passes through the convex lens and forms a reduced and inverted real image on the film. The aperture controls the amount of light entering through the aperture, and the shutter controls the exposure time through the opening speed. The combination of the two controls the exposure. The film is coated with a layer of photosensitive substance, and the image is recorded by changing the light and shade through the photochemical reaction of silver halide (the main component of photosensitive film). After developing and fixing, it becomes a negative, and then it is developed and developed with the negative to get a photo. 2. In digital cameras, the photosensitive element CCD or CMOS is used instead of the photosensitive film, and the light is projected onto the surface of the photosensitive element through the lens, and the light is decomposed into different colors by the filter on the surface of the photosensitive element; The colored light is induced by the photosensitive unit corresponding to each filter to generate analog current signals with different intensities, and then these signals are collected by the circuit of the photosensitive element; Analog signals are converted into digital signals by a digital-to-analog converter, and then these signals are processed by an image processor and then transmitted to a memory card for storage.

13 likes 95 1 browse 20 16-08- 17.

What is the imaging principle of digital camera?

What is the imaging principle of the camera?

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The imaging principle of the camera is:

The lens of the camera is equivalent to a convex lens, and the light from the object passes through the lens of the camera and converges on the film to form an inverted and reduced real image. Compared with traditional cameras, traditional cameras use "film" as the carrier of recording information, and the "film" of digital cameras is its imaging photosensitive device, which is integrated with the camera and is the heart of digital cameras. Digital cameras use photosensitive devices to convert optical signals into electrical signals, which are recorded on memory cards after analog-to-digital conversion.

Like eyes, there are all kinds of things in the imaging process of traditional cameras:

1.

Focus the scene image on the film through the lens.

2.

The photosensitizer on the film changes with the light.

3.

The changed photosensitive agent on the film is developed and fixed by the developer.

The imaging process of an image digital camera with opposite or complementary colors to the scene;

1. The light passing through the lens is focused on CCD or CMOS.

2.CCD or CMOS converts light into electrical signals.

3. Processed by the processor and recorded in the memory of the camera.

4. The image is formed by computer processing and electro-optical conversion of display, or printed by printer.

The specific process: the digital camera focuses the image on the imaging element CCD/ CMOS through the optical system, converts the photoelectric signal of each pixel into a digital signal through the A/D converter, and then processes it into a digital image through the DSP and stores it in the storage medium. The light enters the camera from the lens, and the CCD performs color filtering and light sensing (photoelectric conversion) to "decompose" the photographed object into pixels according to a certain arrangement. These pixels are transmitted to the "analog-to-digital converter" in the form of analog image signals, converted into digital signals, transmitted to the image processor, processed into real images, and then compressed and stored in the storage medium. The reflected light of the scene is converged on the film by the lens to form a latent image, which is the result of the chemical reaction between the light and the emulsion on the film. After development and fixing, an image is formed. The principle of digital camera imaging is different from that of film imaging. It images on a CCD through a lens, and the CCD photoelectrically converts to generate a video signal, and then generates an image through the photoelectric conversion of a display screen.

Edited on 20 18-03-30

View all 23 answers

China _ Intelligent Industrial Camera _ Visual System Data Download Free.

Recommend industrial cameras for you according to the relevant contents of cameras.

KEYENCE vision system, intelligent industrial camera, high-speed and large-capacity intelligence, and accurate character recognition can quickly start long-term use and solve many problems of machine vision. For more details, please consult immediately.

Keanshi China advertising co., ltd

What brand of stereo microscope is good? Select this stereo microscope and click to view details.

Factory direct binocular microscope stereo microscope stereo microscope 7 180 times stereo microscope

750 yuan

Factory outlets 45B 1 1 binocular stereo microscope, 45X stereo microscope and stereo optical microscope.

1 100 yuan

XTL stereomicroscope

2680 yuan

Supply SZ series continuous zoom stereo microscope binocular stereo microscope monocular stereo microscope.

3,250 yuan

stereomicroscope

1299 yuan

1688 advertisement

More experts

Imaging principle of camera

Expert 1 online Q&A to 1.

Reply within 5 minutes |10,000 professional interviewees

Ask questions at once

The most beautiful fireworks asked an electronic digital question, and the comments were good.

Lan Qiuwangzi consulted an electronic digital problem and made a good comment.

Garlic consulted an electronic digital problem and made a good comment.

188 * * * 8493 consulted an electronic digital problem and made a favorable comment.

Basketball big picture consulted an electronic digital question, and the comment was good.

The animal park consulted an electronic digital problem and gave a favorable comment.

AKA consulted an electronic digital problem and made a favorable comment.

Three opinions

The only 007 in life

16

View all 3 comments.

After reading it, the following is more interesting-

Five-lens camera cost-effective aerial camera, easy to use, high efficiency and low cost.

Searle Five Lens focuses on aerial survey, providing a one-stop solution for five lens camera users. The product is simple and easy to operate. Five-lens camera

Advertisement 2021-11-25

What is the imaging principle of the camera?

7 Zan 1 play

How does the camera work?

The camera actually uses the imaging principle of convex lens. A convex lens, let the focal length be f (the convex lens can converge light, the point where the light converges is called the focal point, and the distance from the focal point to the center of the convex lens is the focal length), and the object distance (the distance from the object to the center of the convex lens) be u, then when u >; 2f. Put an opaque object on the other side of the convex lens, which is called a light screen in physics. On the light screen, you can get an image exactly like the real thing, but this image is inverted and reduced. That's how cameras work. There will be a convex lens in front of a traditional camera, which is what we call a lens. This convex lens plays the above role. Behind the convex lens is a darkroom, in which there is a negative film coated with photosensitive substances. The negative is in a dark room, so it is not sensitive because it is sealed and dull. Press the shutter, the shutter opens, and the light enters the darkroom through the convex lens, forming an inverted reduced image on the negative. Shutter opening and closing speed is very fast, the fastest is only one thousandth of a second. Professional cameras can also control the opening and closing time of the shutter, so that the film can be exposed for a long time to achieve the desired effect. Because the focal length of the convex lens used in the camera is relatively small, the subject can always be out of twice the focal length, and an inverted reduced image can always be formed on the negative. There is a difference between a fool camera, a digital camera and a professional camera. The fool machine has only one convex lens, so it can't adjust the exposure time and doesn't need any settings. This is a camera that a fool can use. But in this case, you can't shoot professionally. The difference between digital camera and traditional camera is that the negative film is replaced by ccd. Ccd is an electronic component. When light shines on it, it can be converted into electrical signals. When the lens images an object on the ccd, the ccd converts it into an electrical signal, and the current photo is saved as soon as the shutter is pressed. Professional cameras generally use negatives, but their specialty lies in shutter, aperture and lens. Professional cameras can control the opening and closing time of the shutter to make the exposure time of the film longer or shorter. Aperture is to control the intensity of external light entering the darkroom. In the case of strong external light, if you shoot with a fool machine, the photo will be too bright to see clearly, but a professional camera can control the aperture and reduce the exposure intensity of the negative. The lens of a professional camera is not just a convex lens, but a group of convex lenses. The distance between these convex lenses can be controlled to adjust the focal length, so that the image on the negative can always be the clearest. You can also install wide-angle lenses, color filters and other instruments on the lens. Wide-angle lens makes the shooting range wider, and color filter makes the photo color better. For example, in landscape painting, if you want to make the negative greener and the color effect stronger, you should install a green filter on the lens to let more green light pass through the lens. It is also wrong that pinhole imaging mentioned above cannot be applied to cameras. Because of the linear propagation of light, if you poke a hole in an opaque object, the light reflected by an object larger than this hole cannot pass through the hole horizontally, but the light from the upper part of the object passes through the hole downwards, and the light from the lower part passes through the hole upwards, and a light screen is placed on the other side, so that an inverted image can be obtained. Therefore, pinhole can also play the role of convex lens to some extent. /me? tn = baiduimage & ampct=20 1326592。 lm=- 1。 Cl = 2 & word =% D5% EB% BF% D7% C9% E3% D3% B0 These are photos taken by pinhole imaging principle.

17 likes 2,918 to browse 20 19-08- 19.

What is the imaging principle of the camera?

1. framing: the light (image) passes through the lens, and is projected on the reflector placed at 45 degrees, refracted on the pentagonal mirror at the top of the machine, and then refracted twice by the pentagonal mirror and projected on the framing eyepiece. The photographer saw an upright image like the real thing through the eyepiece. 2. Shooting: The photographer presses the shutter, and the mirror rotates upward, opening the light path from the lens to the film (or CCD or CMOS). At the same time, the reflector blocks the light path to Wuling lens, preventing stray light from entering the camera in the opposite direction through the eyepiece and affecting imaging. At this time, the aperture shrinks to the preset value, the shutter opens, the image recording medium records the image, the shutter closes, the aperture returns to the maximum, and the reflector returns to prepare for the next framing and shooting. In SLR cameras, the principle of film SLR and digital SLR is the same, but the media for recording images are different. Of course, due to different recording media, their structures are also quite different. The above only describes the light path of SLR camera, as well as the function of aperture, the control of shutter, the control of flash, the combination of metering and exposure, ranging and focusing. It can't be described here. There is a double reflection camera. Just like seagulls 4A and 4B in China. What people used to call the "square mirror box" is. Double-reflex camera adopts two lenses, which are placed up and down. Generally, photos are taken on the camera and taken on the camera. Because there is no five-pointed star lens, the image seen by the photographer is upside down and left and right, which is inconvenient to operate. In addition, because the dual-mirror camera uses two lenses to view and shoot separately, there will be a "parallax" problem, that is, the range of images seen by the photographer is not the range of shooting records. SLR camera completely solved this problem, because it completed the framing and shooting through one lens, and basically realized "what you see is what you get", which is one of the reasons for the rapid development of SLR. There is also a camera called "paraxial", which takes a view through a special viewing window on the fuselage and records the image with the lens. Because it is not through a lens to complete the framing and shooting, that is, there is also the problem of "parallax". Is this ok?

5 likes 83 browse 2020-05-07

The imaging principle of the camera-to find the answer, just "ask"

3064 experts answered

Reply within 5 minutes |10,000 professional interviewees

What is the principle of camera imaging? The simpler the better, the easier it is to understand.

1. The lens of the camera is a convex lens. The light emitted by the object passes through the convex lens and forms a reduced and inverted real image on the film. The aperture controls the amount of light entering through the aperture, and the shutter controls the exposure time through the opening speed. The combination of the two controls the exposure. The film is coated with a layer of photosensitive substance, and the image is recorded by changing the light and shade through the photochemical reaction of silver halide (the main component of photosensitive film). After developing and fixing, it becomes a negative, and then it is developed and developed with the negative to get a photo. 2. In digital cameras, the photosensitive element CCD or CMOS is used instead of the photosensitive film, and the light is projected onto the surface of the photosensitive element through the lens, and the light is decomposed into different colors by the filter on the surface of the photosensitive element; The colored light is induced by the photosensitive unit corresponding to each filter to generate analog current signals with different intensities, and then these signals are collected by the circuit of the photosensitive element; Analog signals are converted into digital signals by a digital-to-analog converter, and then these signals are processed by an image processor and then transmitted to a memory card for storage.

13 likes 95 1 browse 20 16-08- 17.

What is the imaging principle of digital camera?

What is the imaging principle of the camera?

Browse 2020-02- 12

Hyperspectral imaging camera _OptTrace brand _M300 Hyperspectral _ 1.4nm resolution

Opttrace.com advertisement

Hyperspectral imaging equipment technology, plant phenotype platform-Gu Feng photoelectric

According to the imaging principle mentioned in the article, I recommend it to you.

Click Consultation for more details.

consult

Greenpheno.com advertisement

load cargo