There were doubts whether to review this penny stray. However, after the demand arose , this question disappeared by itself. To know more, check out: best pocket microscope
This is a long-standing purchase, so in this review I will show you how everyday experience in the form of a slightly damaged lens affected the operation of this microscope.
There will be a couple of heavy gifs that are directly related to the device’s work and clearly demonstrate its work, so just in case, we monitor our traffic .
How was the choice made
The purchase was made more than a year ago. Of the inexpensive options, there were two such microscopes for sale – with magnifications of 45x and 60x, the price difference at that time was 40 rubles, it was not critical for me, and, in my optimism, I made my choice in the direction of 60x. At the same time, it was already clear that in reality the multiplicity would turn out to be less, because popular wisdom reads “All Chinese is small.”
The microscope is equipped with a velcro cover made of artificial leather. All this was placed in a box of soft cardboard, which until today has not survived, because it was thrown out as unnecessary. It looks like this is a photo found on the network. Batteries are also included.
Dimensions – 3.5×4 cm. Weight is very light – 18 gr. (with batteries on board), in the case – already 21 grams. The extension length of the cylinder with the lens is a little more than 1 cm, however, if you make an effort, it can be extended even more, but it does not bring any practical benefit.
The design itself consists of two parts – this is a block with a plastic lens and a block with electronics, which serves as an auxiliary illumination of the viewing area.
This is facilitated by three three-millimeter LEDs, the two extreme ones are ordinary white, giving off a light blue, and in the middle one is ultraviolet. The three-position toggle switch controls all LEDs, which, in the middle position, de-energizes the circuit, and when switched to the extreme positions, it turns on either two white LEDs or one ultraviolet.
The batteries were replaced with new ones. This photo is not entirely reliable, since my phone overexposed the frame slightly and in reality the glow of the ultraviolet is not so bright. The design is movable, as shown below. With the limiter made of transparent plastic, the minimum focusing distance is about 3 mm. LEDs are directed to the highlighted area. How does the multiplicity change if the cylinder with optics is raised and lowered.
Below I will give a list of the obtained images through this microscope (the highlight of the review), but before that I want to clarify three points.
The first moment: in all fragments closer to the center of the frame it will be possible to detect an oblong haze – this is a consequence of my long-standing careless attempt to get a picture of the surface of a diamond drill. I scratched the surface of the lens a little. This is a lesson for everyone for the future, if by purchasing this device yourself, you are going to consider thin long aggressive materials like these . However, at the same time, just look at how this scratch affected the overall appearance of the images as a whole. A couple of photos of the scratch itself:
The second moment,which people are often interested in, because noticed in many reviews on such devices, people in the comments ask how to learn how to photograph through a microscope. I show in pictures, as an example of my device.
1) Put the microscope in the area under consideration. Launch the camera on the phone.
2) Attach the phone camera to the eye. Focus tap on the desired area. To take a photo. All. The third moment:
Glasses for the driver how to choose, tips and tricks
Analysis of emergency situations according to the traffic police shows that in every third emergency, drivers referred to poor visibility, lack of visibility or blinding light (headlights, sun). The reaction speed of the driver varies depending on the intensity and sharpness of the lighting of the road. Sunset, dawn, cloudy day, damp road, fog are all standard circumstances associated with risk for the driver. Ordinary sunglasses, darkened glasses do not solve these problems, and in some cases can aggravate the situation. Why do drivers need the best sunglasses for driving, how do they work? Arguments allow you to analyze this information and draw the right conclusions related to the purchase of optics for drivers.
What are special glasses for the driver ?
Waves of light depending on the intensity and color spectrum can have different lengths. Different waves enter the eye, the visual receptors of the retina at different angles. Reflecting, for example, from the surface of the water, glare of the sun on a wave or wet road surface, the entire spectrum of light fluxes is reflected equally intensely and acts on the optical system of the eye as a blinding ray of enormous power. Special, polarized optics are called upon to help the driver avoid this unpleasant effect. Ordinary darkened glasses let in 2/3 of the light beam, and driving optics exactly half. Glasses for drivers transmit more light, and accordingly transmit more information about the world around them to visual analyzers, without affecting the retina.
What is polarization optics? How to choose glasses for the driver
Polarization is the light reflected from the surfaces of glare objects. It turns out that two wavelengths are added, one straight line, the other reflected. The sum of these waves produces the effect of polarization. Optics created in order to remove or reduce this phenomenon is called polarization optics. Such optics include glasses for fishermen, for motorists and even for patients with epilepsy in whom a harsh light can cause an attack of the disease. The combination of optics for vision correction and polarization optics in one product is a fairly common thing.
Riding a car without glasses is dangerous in conditions of poor visibility.
Many professional drivers turn to ophthalmologists so that at some point they stop noticing the difference in shades of colors, the sharpness of vision disappears, objects around lose their clear shape, as if they’re “floating” . This visual disturbance is called the driver’s eye fatigue effect. The disorder is accompanied by the following symptoms:
1. The colors of objects and their midtones, as if floating and merging. This phenomenon is dangerous because the driver is not able to determine the distance to the subject, for example, overtaken or oncoming vehicles.
2. Patients at the time of blinding do not have an arbitrary tear flow, accompanied by a loss of orientation in space and a violation of the concentration of vision on the subject. It manifests itself when moving towards sunlight, with the effect of a wet road.
3. All of these symptoms reduce the field of view and impair the driver’s peripheral vision. Any of these problems can lead to a serious emergency. Only polarized glasses for drivers or optics with anti-glare effect can remove most of these problems.