1. What is polarizing mirror

The polarizing mirror is a lens manufactured based on the polarization principle of the light. It is used to eliminate and filter the scattered light in the beam, so that the light can put the eye visual image in the light transmittance of the right track, making the field of view clear and natural.Mostly used for Sunglasses and camera lenses.

Second, the principle of polarizing mirror

The role of polarizing mirror is to filter reflective light and increase imaging contrast.Its working principle is to selectively filter light from a certain direction.By filtering the many biased Lights in the long reflection, weaken the intensity of light in the sky, darke the sky, and increase the contrast between the blue sky and the white clouds.When you shoot the specific real shooting, you should look at the viewfinder and rotate the front mirror. The darkest effect in the sky in the viewfinder is the most obvious, and the darkest is 90 degrees.You can transfer to any angle of the darkest and the brightest rooms as needed.

Polarized mirror can also effectively weaken or eliminate non -metallic surface reflection. This reflection light is a typical polarizing light (the light reflected by the metal surface reflection is not polarized light, and the Polarized mirror does not work on it). By adjusting the polarizer, you can filter it by adjusting the polarizer.The reflection of this part is dropped, thereby improving the image quality of the subject and improving the clarity of the picture.

For example, by using polarizers, the reflection of the water surface can be weakened to clearly shoot the fish in the water.When shooting such a scene, the projection angle of the light source should be consistent with the angle of the camera, and its maximum partial angle needs to be agreed between 30 and 40 degrees.When using it, you can adjust the lens in the front group of the filter to minimize the reflection on the surface of the scene.In addition, polarizing mirrors can effectively improve the saturation of color and increase contrast. This is because polarizing mirrors can absorb various directions reflected by fog or dust reflected in the atmosphere, so that the shooting images are more pure.

For example, in photography such as flowers and static objects, polarizers are often used to take colorful photos.It is useful when landscape photography, flower photography and shooting certain specific reflective scenes.The polarizer is used in the landscape photo, and the depiction of the cloud layer has excellent effects.The light refractive index of the blue sky is greater than the light scattered by the white clouds.Using polarizer can also make the color of green leaves more saturated and eliminate the fog of shooting urban scenery at low angles.

3. Polarized Sunglasses buying skills

Sun glasses are not only used in summer, but they must be used all year round.Wear it on a sunny day, and it should be worn on a cloudy day.Do nt think that the sun is not strong and the weather is not hot, so it s light -hearted, and unknowingly illuminated more harmful ultraviolet rays.

1. First consider quality

The primary function of polarizing Sunglasses is to prevent ultraviolet rays and filtrate polarized light. Good polarized Sunglasses lenses can block more than 90%of ultraviolet rays.You can choose to have polarized Sunglasses with the best blocking ultraviolet logo with the "UV400"; inferior polarized Sunglasses, such as dark Sunglasses. As the light of the human eye darkens, the pupils of the human eye will become larger, and the eyes of human eyes will become larger.increase, increase damage to the eyes.

2. The truth and nature of the vision

The color selection of polarized Sunglasses should be based on the color of the surrounding environment, the edges of the object are clear, and the principle of effectively identifying different color signal Lights.Especially when driving Sunglasses, it is guaranteed to drive safety.The color of the lens is better in gray, tea, and green, because these colors of lenses are better absorbed by infrared and ultraviolet rays, which can improve visual contrast and clarity. Wearing effects in severe air pollution or fog.

3. Will there be discomfort for a long time?

Genuine polarized Sunglasses must be comfortable to wear; inferior lenses have no technical and functional at all when manufacturing, and the lens materials are also very inferior. After wearing it, feel uncomfortable, dizziness, headache, dry eyes, tingling, etc. should be stopped immediately.Essence

4. Look at the protection function of the frame

Most polarized motion Sunglasses frames are designed with veneer arcs, which can effectively prevent wind and foreign bodies from stimulating the eyes in outdoor sports.In addition, the hard level of polarizing lens and the flexibility of the frame of the frame consider whether it will hurt the human body.

Disclaimer: The above method stems from the index of the program system or the sharing of netizens. It is for your reference only and does not represent the research perspective of this website. It proves that it is valid. Please pay attention to the authenticity and authority of the source of the content of the content.Apply to delete & gt; & gt; error correction & gt; & gt;

What is lens refractive index

The lens refractive index is the ratio of the speed of lighting in real vacuum to the spread of light in the lens material, which reflects the lens's refractive ability to light.

At present, mainstream resin lenses on the market are: 1.56, 1.60, 1.67, 1.71, 1.74 and other types.Under the same prerequisite, the higher the refractive index of the lens, the thinner the lens, the lighter.

Speaking of this, many friends are very happy, of course, I hope that they can be equipped with a light and thin glasses!But don't ignore another problem: Generally, the higher the refractive index of the lens, the lower the number of Abbe, and the more obvious the color scattered.Because the scattering will affect the imaging effect of the medium, we measure the imaging quality of the lens through Abei.The higher the number of Abe, the smaller the color scattered, the clearer visual effect.Abe's number is too low, which will make the lens a rainbow pattern, affecting the user's visual clarity.

Therefore, the higher the refractive index is better, the better the lens refractive index must be selected to better protect the eyes.

What is the refractive index of polarized lens

The refractive index of polarizing lenses is not high. Generally, the refractive index of the selection of myopia below 500 degrees is 1.56. If you need to consider the thickness of the glasses, you can also choose the refractive index of 1.60 and above.The price of polarized lenses with higher refractive indexes such as 1.71, 1.74 is also higher, and you need to customize it. You can choose according to your own needs.

Generally speaking, polarizing glasses do not need to be worn all the time, and mostly use it during outdoor sports, so the ordinary 1.56 refractive index can meet most of the requirements.

The benefits of high lens refractive index

1. For people with a height, wearing thick lenses all day not only easily cause visual fatigue, but also easily cause compression or cause the glasses to decline or pain in the ears.The high refractive index lens refractive index will be relatively thin and lighter, and it is usually relatively comfortable to wear.

2. Too thick lenses will not only make the wearer have a sense of depression, but also affect the aesthetics of the wearer. The relatively thin lens will look better.

3. Compared with low refractive lenses, high refractive lenses are better than lenses with low refractive indexes than lenses with lower refractive indexes.

How to choose the right lens refractive index

1. Patients with myopia below 200 degrees are recommended to use a 1.50 refractive lens.

2. Patients with myopia below 600 degrees are recommended to use a 1.56 refractive index lens.

3. Patients with myopia below 800 degrees are recommended to use a 1.60 refractive index lens.

4. Patients with myopia below 1000 degrees are recommended to use a 1.67 refractive index lens.

5. Patients with myopia below 1000 degrees are recommended to use a 1.74 refractive lens.

Disclaimer: The above method stems from the index of the program system or the sharing of netizens. It is for your reference only and does not represent the research perspective of this website. It proves that it is valid. Please pay attention to the authenticity and authority of the source of the content of the content.Apply to delete & gt; & gt; error correction & gt; & gt;

[Polarized glasses choose] How to buy Polarized glasses Polarized glasses to buy skills

How to buy Polarized glasses

Sunglasses are like a magic mask. As long as you wear it, you can make you instantly change the same star flavor.Friends who like Sunglasses will have some doubts when choosing a Sunglasses. The current Sunglasses are fashionable and popular in terms of shape, color to material, details.The prices of Sunglasses on the market are available from dozens of yuan to thousands of yuan. What should I choose?Especially the Polarized mirror, I do nt know where to start. Today I will talk about the precautions on the selection of polarizers.

The first consideration is the quality of polarized Sunglasses

The primary function of polarizing Sunglasses is to prevent ultraviolet rays and filtrate polarized light. Good polarized Sunglasses lenses can block more than 90%of ultraviolet penetration. Please choose polarized Sunglasses with the best blocking of UV400 to the best obstruction of ultraviolet logo;The inferior polarization Sunglasses of the polarizing filtering function, such as dark Sunglasses, is darker with the light of the human eye and the pupils of human eyes will become larger, and the ultraviolet rays of the eyes will increase, increasing damage to human eyes.

Will there be discomfort in long -term wear?

Genuine polarized Sunglasses have to be comfortable to wear; if you wear bad feelings such as discomfort, dizziness, headache, dry eyes, tingling, etc.Generally, inferior lenses have no technical and functional at all when manufacturing, and the lens materials are also very inferior. Choosing inferior polarizer Sunglasses cannot protect the eyes. On the contrary, it will cause damage to be worthless.

Select polarizing Sunglasses to focus on the protection function of the frame

In the outdoor sports, it can effectively prevent the stimulation of the eyes and foreign bodies. In addition, the hard level of polarizing lenses and the flexibility of the frame of the frame must be considered whether it will cause damage to the human body.In addition to basic functions such as filtering glare, most polarized motion motion frames are designed with veneer arc.

The identification of the quality of polarized Sunglasses

Generally, regular glasses shops have instruments to detect Sunglasses resisting ultraviolet capacity. Through instrument detection, you can know whether the glasses in your hands have reached the standard.In addition, the simple method of testing the quality of Sunglasses is: you can use the ultraviolet light sent by a banknote test or a banknote check machine to observe the UV logo pattern on the RMB through Sunglasses. If the quality of the Sunglasses is poor and there is no obstruction of the ultraviolet rays, it can still be clearly clear.When you see the UV logo pattern on the RMB, on the contrary, if the quality is excellent, you can't see it.

The selected polarized Sunglasses should be true and natural

The color selection of polarized lenses should be based on the color of the surrounding environment, the edges of the object are clear, and the principle of effectively identifying different color signal Lights.The color of the lens is better in gray, tea, and green, because these colors of lenses are better absorbed by infrared and ultraviolet rays, which can improve visual contrast and clarity, especially when driving Sunglasses, ensure driving safety.It is particularly effective when air pollution is severe or fog.

[Polarized Sunglasses price] How to choose polarized Sunglasses of polarized Sunglasses, how to identify good or bad

How to choose polarized Sunglasses

Many consumers see the prices on the market from tens of yuan to thousands of yuan, and the prices of polarizers ranging from tens of yuan will always have difficulty in choosing. How should they buy polarized Sunglasses?For this issue, I will introduce the precautions for the choice of polarized Sunglasses from five aspects.

Step/Method

1. The first consideration is the quality of polarized Sunglasses

The primary function of polarizing Sunglasses is to prevent ultraviolet rays and filtrate polarized light. Good polarized Sunglasses lenses can block more than 90%of ultraviolet penetration. Please choose polarized Sunglasses with the best blocking of UV400 to the best obstruction of ultraviolet logo;The inferior polarization Sunglasses of the polarizing filtering function, such as dark Sunglasses, is darker with the light of the human eye and the pupils of human eyes will become larger, and the ultraviolet rays of the eyes will increase, increasing damage to human eyes.

2. Will there be discomfort for a long time?

Genuine polarized Sunglasses have to be comfortable to wear; if you wear bad feelings such as discomfort, dizziness, headache, dry eyes, tingling, etc.Generally, inferior lenses have no technical and functional at all when manufacturing, and the lens materials are also very inferior. Choosing inferior polarizer Sunglasses cannot protect the eyes. On the contrary, it will cause damage to be worthless.

3. Select polarizing Sunglasses to focus on the protection function of the frame

The protection function of polarizing Sunglasses Apart from the basic functions such as anti -ultraviolet rays, avoiding strong light dazzling, and filtering glare, most polarizing Sunglasses frames are designed with surface arcs. In outdoor sports, it can effectively prevent wind and foreign body stimulation. In additionThe hardness of the lens and the flexibility of the frame of the frame must be considered whether it will hurt the human body.

4. The selected polarized Sunglasses should be true and natural

The color selection of polarized Sunglasses should be based on the color of the surrounding environment, the edges of the object are clear, and the principle of effectively identifying different color signal Lights.Especially when driving Sunglasses, it is guaranteed to drive safety.The color of the lens is better in gray, tea, and green, because these colors of lenses are better absorbed by infrared and ultraviolet rays, which can improve visual contrast and clarity. Wearing effects in severe air pollution or fog.

5. The identification of the quality of the polarized Sunglasses

Generally, regular glasses shops have instruments to detect Sunglasses resisting ultraviolet capacity. Through instrument detection, you can know whether the glasses in your hands have reached the standard.In addition, the simple method of testing the quality of Sunglasses is: you can use the ultraviolet light sent by a banknote test or a banknote check machine to observe the UV logo pattern on the RMB through Sunglasses. If the quality of the Sunglasses is poor and there is no obstruction of the ultraviolet rays, it can still be clearly clear.When you see the UV logo pattern on the RMB, on the contrary, if the quality is excellent, you can't see it.

How to distinguish between polarized Sunglasses?

1As well asFirst observe whether the lens has scratches, impurities, bubbles, stripes, and check the outer packaging of Sunglasses. The regular Sunglasses should be marked with the name of the name, color, diameter, quality level, production factory name and Trademark.UVAAs well asUVBandCEOnly the signs of Sunglasses can ensure that a certain ultraviolet rays are blocked.

2As well asWhen you buy Sunglasses, wear it to try whether you have dizziness and headache.There are also some myopia Sunglasses on the market for sale, but because the pupil distances and other indicators vary from person to person, so if there is no guidance of a professional, consumers should not choose this degree of Sunglasses.

3As well asTake the two corners of the Sunglasses against the sunlight with your hands, so that the reflector of the mirror surface is slowly rolled. If the mirror reflected fluorescent shadow appears wavy and distorted, it proves that the lens is uneven. Such a mirror will damage the vision.

4As well asThe lens should be flat, the sharpness should be high, the material of the Sunglasses is glass and resin, and the best Sunglasses should be polarized lenses.It is made of synthetic resin as light and precise as Contact lenses, which is synthesized by seven layers of thin slices. The two layers of the outermost layer are super -hard wear -resistant layers; the second and sixth layers are anti -crushing enhanced layers; third and fifth layers are ultraviolet raysThe filter layer, the middle layer is a polarized filter layer.Polarized lenses can effectively filter reflected light and harmful ultraviolet rays, and have functions such as anti -crushing and abrasion. They are the most popular Sunglasses.

5As well asIn addition to the color, face, and dressing of Sunglasses, the color of the Sunglasses should also be selected according to the place of entry and exit.Generally speaking, black, tea, and gray filtration effect is good; gray lenses can be absorbed balanced with any chromatography, and the scenes seen after wearing a mirror will only get darker without obvious color difference;Blu -ray can improve visual contrast and clarity, and wearing effects in severe air pollution or fog.

6As well asWhat kind of color of Sunglasses is suitable for us?The simple self -test method is to put on a Sunglasses in the mirror, and you can see your pupils in faintly.If the color is too light, the filtering effect is too small; if the color is too dark, it will affect the vision and weaken the color.This year's popular light -colored Sunglasses should not be used in seaside water activities, strong reflective snow, and the sun that is very strong in the sun. Instead, they should wear sporty Sunglasses. Most of them use colorful saturation colors, which can be absorbed or can be absorbed or can be absorbed orReflection more visible light.

7As well asIn addition to reducing strong light stimulation and making the eyes comfortable, the most important purpose is to prevent ultraviolet rays from causing damage to the eyes.UVSo be sure to mark the defenseUVFunctional lens.SunglassesUVIndex96%-98%between.

8As well asGenerally, regular glasses shops have instruments to detect Sunglasses resisting ultraviolet capacity. Through this test, you can know whether the glasses in your hands are helpful for your eye health.

Polarized Sunglasses price

100Below Yuan is not good in Wenzhou goods lenses((no100%UV prevention and overwhelmingCure

100-300The quality of the yuan is not much different from the genuine product, and the workmanship is fine.

300-800Yuan's is said to be the highest craftsmanship in Shenzhen where is the high imitation of Raypeng

800YuanIt should be the genuine product from Hong Kong.

For more detailed prices of polarized Sunglasses, please refer to Polarized mirror famous name online stores.

Polarized Microscope principle

1. Single refraction and dual refractive

When the light passes through a certain substance, such as the nature of light and the pathway does not change due to the direction of illumination. This substance has "different sexual sex" in optics, also known as single refractive body, such as ordinary gases, liquids, and non -crystalline.Solid; if the light is through another material, the speed, refractive index, absorption and polarization, amplitude of the light are different due to the illumination direction.Such as crystal, fiber, etc.

2. The polarization phenomenon of light

Based on the characteristics of vibration, light waves can be divided into natural light and polarizing light.The vibration of natural light is characterized by many vibration surfaces on the vertical light wave conduction shaft, and the amplitude of vibration on each plane is the same; natural light is reflected, refracted, double refraction and absorption, etc.Given light waves are called "polarizing" or "polarized light".

3. The generation of polarization and its role

The most important part of polarizing Microscope is polarizing device -polarizer and polarizer.In the past, both of which were composed of Nicola prisms. It was made from natural squarestones, but due to the large limitation of the crystal volume, it is difficult to obtain a large area of polarization. Polarized Microscope uses a artificial polarizer to useReplace the Nicor Slutter.The artificial polarizing mirror is made of sulfate, also known as the crystal of HERAPathite, which is green olive.When ordinary light passes through it, it can obtain a straight line polarizing light that is only vibrated on the line.

Polarized Microscope has two polarized mirrors, one is called "up mirror" between the light source and the object of the object;Attachment is for operation, which has the scales on the rotation angle.When the light from the light source through two polarized mirrors, if the vibration direction of the mirror is parallel to each other, that is, when the "parallel inspection bias" is in the case, the field is the brightest.Conversely, if the two are vertically each other, that is, when they are in the "bias of the Zhengjiao school", the field of view is completely dark. If the two are tilted, the field shows a medium degree of brightness.It can be seen that the straight line polarization formed by the mirror, if its vibration direction is parallel to the vibration direction of the mirror, it can be completely passed; if the partial slopes are oblique, only a part is passed; if it is vertical, it cannot pass.Therefore, when a polarized Microscope is used, in principle, the upper -mirror and mirror mirror should be carried out in a state of positive cross -check bias.

4. Double refractive body under the bias of the right inspection

In the case of orthogonal intercourse, the field of view is dark.The vibration direction of the polarized light formed does not change, and the vibration direction of the vibration of the mirror is still perpendicular to each other.If the inspection object has dual refraction or substances containing dual refraction characteristics, the vision field with dual refraction characteristics is brighter. This is because the straight -line polarization light shot from the upper mirror enters the double -folding body, and the vibration direction will generate the vibration direction.Different two kinds of linear polarization light. When these two Lights pass the mirror mirror, because another beam of light does not orthogonal with the direction of polarizing mirror polarization, you can see the bright mirror.elephant.When the light is dual -refractive, the two polarized light vibration directions are formed, which are different according to the type of object.

When the dual refractive body is orthogonal, when the rotating loading table, the elephant of the dual folding body changes four times in the rotation of 360 , which is darkened every 90 every 90 .The position of the darkening is the two vibration directions of the dual refractive body consistent with the vibration direction of the two polarizers. It is called the "light position" rotating 45 from the lighting position and the body becomes the brightest. This is "The diagonal position ", because when deviating 45 , when the polarizing light reaches the object, the light can be decomposed by the mirror that can be detected by the mirror, so it is bright.According to the above basic principles, the use of polarized micro -surgery may determine the same oriental (single refractive body) and the opposite sex (dual refractive) substances.

5. Interference color

In the case of biased positions, the dual refractive body is observed as a light source with a variety of different wavelengths. When rotating the carrier table, not only the brightest diagonal position appears in the field of view, but also the color.The cause of color is mainly caused by interference colors (of course, the object itself may not be colorless and transparent).The distribution characteristics of the interference color determine the type and its thickness of the dual folding body. It is due to the dependence of the wavelength of different colors of light.The color of the mirror light is different.

Polarized Microscope use precautions

1. The laboratory should have three anti -prevention conditions: shockproof (far away from the source of the Earthquake), moisture -proof (using air conditioners, dryers), and dust (floor floor).Power: 220V -10%, 50Hz temperature: 0 degrees -40 degrees.

2. Be careful not to make the material mirror encounter the sample to avoid scratching the material mirror.

3. Do not switch the mirror when the center of the loading table is close to the center of the object mirror, so as not to scratch the material mirror.

4. Brightness adjustment should not be large and small, and do not light up, affect the service life of the Light bulb, and at the same time damage.

5. Switch all the functions, the movement should be light, and in place.

6. To minimize the brightness when shutting down.

7. Non -professional personnel should not adjust the lighting system (filament position light) to avoid affecting the quality of imaging.

8. Pay attention to high temperature when replacing the halogen Lights to avoid burns; be careful not to directly contact the vitreous of the halogen light with your hands.

9. When the shutdown is not used, adjust the material mirror to the minimum state through the focusing mechanism.

10. Don't use it if you don't use it, don't immediately cover the dust cover, and then cover it after cooling. Pay attention to the fire prevention.

11. The optical components that are not used often are placed in a dry dish.

12. Non -professional personnel should not try to wipe polarized Microscope mirrors and other optical components.The eyepiece can be dipped in a 1: 1 ratio (aquatic alcohol: ether) mixed liquid to dry after dried the sector cotton swab. Do not use other liquids to avoid damaging the mirror.

The difference between polarizing Microscope and ordinary Microscope

The main difference between polarizing Microscope and ordinary Microscope is equipped with two light components on the polarized Microscope, that is, polarizing mirrors and detect polarizers, so the structure of polarizing Microscope is more complicated than biological microscopes.Polarized Microscope is the purpose of analyzing and testing of crystal optical characteristics through the role of these two polarizers.

When testing the crystal, the polarized Microscope is placed on the carrier between the Polarized mirror and the Polarized mirror.The vibration surface of the two polarized mirrors should be vertical (orthogonal), then the field of view is the special nature of dark use of light polarization. It is applied to microscopic imagery technology and promotes the rapid development of crystal optics.The principles and methods of crystal optics are used to study minerals, rocks, slag, and refractory materials, which are convenient and accurate, so they are widely used in geological research and gold phase research.There are basically two ways to observe with polarized Microscope:

1. Use small pores to light up the light beam to light up the object. At this time, you can think that all the beams are perpendicular to the plane of the object, and you can directly observe the image of the object with a eyepiece.

2. Using a large -pores to concentrate on the light beam to illuminate the object. At this time, the pupils of the objective mirror will produce interference phenomenon that indicates the nature of the objects observed.Interfering images formed.

Disclaimer: The above method stems from the index of the program system or the sharing of netizens. It is for your reference only and does not represent the research perspective of this website. It proves that it is valid. Please pay attention to the authenticity and authority of the source of the content of the content.Apply to delete & gt; & gt; error correction & gt; & gt;