How to eliminate or correct parallax???

Parallax is a phenomenon in which the relative movement between the ruler and the measured object occurs with the shaking of the eye (the observation position changes slightly) during the adjustment process of optical experiments, making it difficult to make accurate experimental measurements.

The reason for parallax is that the scale (reticle) is not coplanar with the object to be measured, so that when the eye shakes (the observation position changes slightly), there will be relative movement between the ruler and the measured object.

Ways to eliminate parallax:

If there is a parallax between the image to be measured and the scale (reticle), it means that the two are not coplanar, and the position of the image or scale (reticle) should be adjusted slightly, and the eyes should be slightly shaken at the same time until there is no relative movement between the image to be measured and the scale (reticle), that is, there is no parallax. Here's how to do this: Shake your eyes up and down in front of the spectrometer eyepiece and observe:

When the eyes move upwards, if the green cross moves downwards, the green cross is positioned in front of the reticle (as shown in the illustration above), so it is only necessary to move the eyepiece out slightly; On the other hand, if the green cross is moved upwards, it means that the green cross is behind the reticle, and the eyepiece can be moved slightly in. Adjust the adjustment several times until there is no relative movement between the image and the ruler to completely eliminate the parallax.

This is mainly the psychological quality and personal ability level of the shooter.

Experience is also important.

Eliminate parallax. The method is to repeatedly focus the eyepiece and objective. Until the eyes move up and down and the reading does not change. At this time, the cross-wire seen from the end of the eyepiece is clearly separated from the image of the target.

When the eye moves slightly up and down the eyepiece tip after the objective is focused, there is sometimes a relative movement of the cross wire with the target.

This phenomenon is called parallax. The reason for the parallax is that the image formed by the target through the objective lens is not coded and coincides with the crosswire plane. Because the existence of parallax will affect the accuracy of the observations, it must be eliminated.

The way to eliminate parallax is to repeatedly focus the eyepiece and objective. Until the eyes move up and down and the reading does not change. At this point, the image of the crosswire and the target from the eyepiece is very clear.

Parallax is the difference in direction caused by observing the same object from two points at a certain distance. The reason for this is that the actual image of the target does not happen to be on the plane of the crosshair. The presence of parallax increases the error of the ruler reading, and the way to eliminate it is to rotate the objective lens to the light spiral and repeat the light until the shadow finger image of the scale no longer moves when the eye moves slightly up and down.

Because there is a distance between the left and right eyes of a person, there is a slight difference in the perspective of the two eyes, and this difference will make the scenery observed by the two eyes a little displaced. The reason why human beings are able to produce stereoscopic visual effects with a sense of space is precisely this kind of displacement, which is called parallax in medicine, is organically synthesized in the brain of Weiqing cavity.

Extended information: The eye-opening is actually the result of parallax. The results of observing things with different eyes of the same person are not the same, and the eyes of different people are naturally very different.

Binocular parallax is when a person observes a near object, the two eyes will produce parallax, that is, a pair of slightly different images on the two retina, the brain will fuse them to produce a three-dimensional image, and can determine the distance between the object and the viewer.

The way to eliminate parallax is to repeatedly focus the eyepiece and objective. Until the eyes move up and down and the reading does not change. At this point, the image of the crosswire and the target from the eyepiece is very clear.

After the objective lens is focused, when the eye moves up and down slightly at the end of the eyepiece, sometimes there is a phenomenon that the hidden cross wire of the judgment pin has a relative motion with the target, which is called parallax of the digging hall. Parallax occurs because the image of the target through the objective does not coincide with the crosswire plane. Since parallax can affect the accuracy of observations, it must be eliminated.

The way to eliminate parallax is to repeatedly focus the eyepiece and objective. Until the eyes move up and down and the reading does not change. At this point, the image of the crosswire and the target from the eyepiece is very clear.

Summary. Answer: Hello kiss How to eliminate parallax carefully carry out eyepiece alignment, and then carry out objective lens alignment, so that the crosswire and the target image are clear When the image surface of the target is not coincident with the surface of the crosswire reticle, it will cause parallax, and it is necessary to alternately adjust the rotation of the eyepiece and the objective lens to the light spiral, carefully carry out the eyepiece alignment, and then carry out the objective lens alignment, so that the crosswire and the target image are clear.

Answer: Hello kiss How to eliminate parallax carefully carry out eyepiece alignment, and then carry out objective lens alignment, so that the crosswire and the target image are clear When the image surface of the target is not coincident with the surface of the crosswire reticle, it will cause parallax, and it is necessary to alternately adjust the number of rotation eyes and the mirror and the eyepiece of the objective lens to the light spiral, carefully Bishan to carry out the eyepiece to light, and then carry out the objective lens to light, so that the crosswire and the target image are clear.

Parallax is a phenomenon in which the relative movement between the ruler and the measured object occurs during the adjustment process of optical experiments, with the shaking of the eye (the observation position changes slightly), making it difficult to make accurate experimental measurements. If there is a parallax between the image to be measured and the scale (reticle), it means that the two are not coplanar, and the position of the image or scale (reticle) should be adjusted slightly, and at the same time, the eyes should be slightly shaken until there is no relative movement between the image to be measured and the ruler, that is, there is no parallax. Here's how:

Shake your eyes up and down in front of the spectrometer eyepiece and observe: when the eyes move upward, if the green cross moves downward, it means that the green ten universe image is positioned in front of the reticle, so you only need to move the eyepiece out slightly to touch it slowly; Conversely, if the green cross is moved upwards, it means that the green cross is behind the reticle, and the eyepiece path can be slightly moved in. Adjust the adjustment several times until there is no relative movement between the image and the ruler to completely eliminate the parallax.

Parallax is to observe the difference in the direction of the sock-shaped Wang Sheng produced by the same target from two points at a certain distance.

Parallax occurs because the image is not coplanar with the cross-wire reticle. The method of elimination is to carefully adjust the program and objective focus spirals at the same time. Sue Zai.