The rearview mirror of the car can see what principle the object behind it is made of

Concave mirrors: Concentrate light.

Convex mirrors: Expand the field of view, e.g. in car mirrors.

Flat Reflector: Reflects light.

The myopia lens is a concave lens, the reading glasses are convex lenses, and the rear view mirror of a car is a convex lens.

Such as: 1, the car's rearview mirror, the observation mirror at the bend, etc., can increase the observation range 2, the plane mirror in life, can be imaged (ladies like to use to illuminate themselves) 3, the car headlights, sun cooker, searchlights of the reflective surface with concave mirrors, can be concentrated or into parallel light 4, periscope (also a plane mirror), can be latent observation.

5. Reading glasses (convex lens) to correct presbyopia.

6. Myopia lens (concave lens) to correct myopia.

7. Microscopes (convex lenses and concave lenses) are used to observe cells, etc. 8. Telescopes (convex lenses and concave lenses) are used to observe stars in the sky and distant objects.

According to the principle of reflection of mirrors.

First of all, the mirror can't see things, and it doesn't have eyes (or organs with similar functions), so if you change the problem to "pass......"There are the following:

The reflection of light from the mirror makes the object form an upright virtual image behind the mirror, which can be seen; Cars use convex mirrors because the virtual image formed by the convex mirror is smaller than the real thing, and it can make people see a larger space through a limited space. Complete.

The principle of ordinary rearview mirror is: the angle between the rays perpendicular to the convex mirror is fan-shaped outward, so that the farther the object scene, with the fan-shaped angle reflected in the convex mirror.

Electric rearview mirror principle: The rearview mirror is equipped with 2 micro motors, and the control buttons installed on the dashboard can make the motor drive the rearview mirror to swing up, down, left and right. Structure of the electric rearview mirror:

Centered on the pivot branch, there are two independent micro-motors and permanent magnets that enable the rearview mirror to flexibly change its position in the up-down and left-right directions.

and Hall IC. The mirrors are controlled by a switch and can move in multiple directions, allowing one micromotor to work or two at the same time. Now in mid-to-high-end cars, the rearview mirror can basically be folded, and the folding function is divided into two types:

One is manual, when you need to bend and lap a late stack, the driver must put his hand out of the window or get out of the car to fold, this kind of folding rearview mirror is now very rare; The other is electric, which is also one of the more common ones, and its advantage is that the driver can fold it in the car, and the rearview mirror will automatically open when the vehicle is started.

The function of the vehicle's rearview mirror is very important, so many car owners are also curious about the principle of the rearview mirror, so what principle of light is used in the car rearview mirror?

Car rearview mirror is not an ordinary mirror, it is a convex mirror, many car owners think that the vehicle rearview mirror, the use of the principle of light reflection, in fact, this statement is wrong, strictly speaking, the vehicle rearview mirror uses the principle of refraction of light.

Therefore, the rays perpendicular to the convex mirror are not parallel, and each ray has an angle between them, which is fan-shaped outward. With the angle of the fan, the mirror image in the convex mirror will be reduced, so that the inside of the rearview mirror can accommodate more distant scenes.

The function of the vehicle rearview mirror is very important, the owner only knows the working principle of the rearview mirror is far from enough, and it is also necessary to adjust the rearview mirror correctly, so as to ensure the driver's field of vision, can avoid potential safety hazards due to insufficient vision.

The car rearview mirror is actually a rearview mirror, which is located on the left and right sides of the head of the car, and has reached the front of the interior of the car. It can reflect the situation in the rear, side and below of the car, so that the driver can indirectly see the situation in these positions, and plays the role of a "second eye", expanding the driver's field of vision.

Automobile rearview mirrors are divided into exterior mirrors, lower rearview mirrors and interior rearview mirrors according to the installation position.

In terms of use, the exterior mirrors reflect the rear side of the car, the lower mirrors reflect the front and bottom of the car, and the interior mirrors reflect the rear and interior of the car.

Depending on the use, the mirror structure will be different. There are two main types of mirrors in general, one is a plane mirror, as the name suggests, the mirror is flat, and the term is "the radius of surface curvature r is infinite", which is the same as the general family mirror, and the image can be obtained with the same size as the eye, and this plane mirror is often used as an inner rearview mirror. The other is a convex mirror, the mirror is spherical, with a radius of curvature of different sizes, its image is smaller than that of the eye, but the field of view is large, like the role of the camera's "wide-angle lens", this convex mirror is often used as an exterior mirror and a lower rearview mirror.

Cars and other light passenger cars are generally equipped with exterior and interior mirrors, and large commercial vehicles (buses and trucks) are generally equipped with exterior mirrors, lower mirrors and interior mirrors.

Although the car rearview mirror looks inconspicuous, but it plays a very important role in safe driving, we must learn how to use the car rearview mirror correctly, improve their driving skills.

Photo by Pacific Automobile Network Ancient ).

Regarding the landlord's concern, "What is the rearview mirror outside the car cab?" "Here's my personal opinion:

Convex mirror, because convex mirror can accept light reflection of more than 180 degrees, resulting in a larger field of view, allowing the driver to see wider:

1. The convex mirror has a divergent effect on the light Parallel rays hitting the convex mirror become divergent after being reflected After the reflected rays are reversed and extended, they will converge at one point, which is called the focus of the convex mirror;

2. The focus of the convex mirror is not the actual convergence point of the reflected rays, but the virtual focus The convex mirror can be used to expand the observation range For the plane mirror and the convex mirror with the same aperture, when the observer is equally far away from the mirror, the range observed from the convex mirror is larger than that of the plane mirror With a convex mirror with a not too large aperture, the scene in a relatively large range can be observed;

3. Therefore, the rearview mirror on the car is used convex mirror Spherical mirror imaging spherical mirror can also make the object image The distance between the object and the spherical mirror is different, and the image formed is also different We can use the following experiment to observe the imaging situation of the spherical mirror

In addition to Poussin, which is a plane mirror, the car rearview mirror is a curved mirror, and the principle is the principle of optical reflection, but the difference between the magnitude of the reflection horizon and the degree of distortion is based on the size of the curvature.

The convex mirror can reflect a large range of light outside the car into a small range, and put this small range on the driver's line of sight, so that you can naturally see a large range of conditions behind the car.

Correct mirror position.

How should the three mirrors located on the left, right, and windshield** be adjusted? The first is the old saying, first adjust the standard sitting posture, and then adjust the mirror.

1. **Rearview mirror: The left and right positions are adjusted to the left edge of the mirror surface just cut to the right ear of the image in the mirror, which means that in general driving conditions, you can't see yourself from the **rearview mirror, and the upper and lower positions are to put the distant horizon on the mirror.

Second, the left side mirror: the upper and lower positions are to put the distant horizon in the **, and the left and right positions are adjusted to the body occupies the mirror range of 1 4.

Three, the right side of the rearview mirror: because the driver's seat is located on the left side, so the driver to the right side of the car ear is not so easy to grasp, coupled with the need for sometimes roadside parking, in the right side of the rearview mirror in the adjustment of the upper and lower position of the ground area to be larger, about 2 3 of the mirror. The left and right positions are also adjusted to the body occupies 1 4 area.

A mirror in which the reflective surface of a convex mirror is part of a spherical surface is called a spherical mirror. The one that uses the outer surface of the spherical surface as the reflective surface is called a convex mirror.

The convex mirror diverges the light Parallel rays that hit the convex mirror become divergent after being reflected After the reflected rays are reversed and extended, they will converge at one point, which is called the focus of the convex mirror The focus of the convex mirror is not the actual convergence point of the reflected rays, it is the virtual focus Convex mirror can be used to expand the observation range For plane mirrors and convex mirrors of the same aperture, when the observer is equally far away from the mirror, the range observed from the convex mirror is larger than that of the plane mirror With a convex mirror with a not too large aperture, you can observe the scene in a relatively large range Therefore, The rear view mirror on the car is a convex mirror Spherical mirror imaging spherical mirror can also make the object image The distance between the object and the spherical mirror is different, and the image formed is also different We can use the following experiment to observe the imaging situation of the spherical mirror

At any position in front of the convex mirror, the real image of the candle cannot be received by the light screen, and only the virtual image of the candle can be seen from the mirror

The rearview mirror is a convex mirror, and the working principle is that the convex mirror can diverge light; The reflector of the car headlamp is also a convex mirror, and the working principle is that the convex mirror can diverge light.

The car reversing mirror is through the reversing mirror on both sides of the outside of the body, so that the driver can see the situation behind the car more clearly, and plays a great role in reversing and road merging.

The car's rearview mirror is a convex lens, which can be used to expand the driver's field of vision.

It is the rearview mirror pull.

Reversing is a way to see both sides of the rear of the car through it.

The reflector, of course, is used to pull the light.

The rearview mirror is a convex mirror, not a convex lens, which is mounted on a telescope.

The rearview mirror of the car is changed to a few bai, ranging from ten to several hundred.

If the rearview mirror is damaged, if the lens is broken, you only need to replace the lens, **is zhuan30 yuan a shu, anti-glare** is 50 yuan a, if heated with electricity, ** is 100 yuan a. The rearview mirror housing is damaged, and it is replaced with **100 200 yuan. Go to the 4S shop to replace the rearview mirror assembly, ** is more expensive, about 1000 yuan.

Specifically, it depends on the model and brand, and it is cheaper to be hundreds, and we recommend that when the car is parked on the side of the road, fold the outside of the rearview mirror to the inside to reduce the chance of damage.