So while handheld laser out of the initial phase are the same, but encountered reflective objects (here after the wall, diffuse. The surface of the mirror and smooth with dust), reflecting to a certain point after some photons go, some photons walk less some reflection, so to meet again when they phase is different, so there will be some local bright dark flecks of some places this pattern, known as speckle.
According to the Huygens Finel principle, diffuse surfaces in tiny points of light. Due to the strong coherence of handheld laser, emitted by the point light sources of coherent light beam coherent wavelet. Different phase coherent light beam, the formation of bright spots, dark spots in space, or in bright spots and dark spots between the. The diffuse phase difference between wavelet coherent beam is randomly distributed, and the coherent light beam in space wavelet formed bright spots and dark spots of countless random distribution, known as speckle.
After the presence of speckle often affect the resolution of optical instrument.Handheld laser for holographic lighting, also found that the effect of laser speckle on the holography resolution. It was believed that the speckle is a special noise with useless information, a lot of methods to weaken or even eliminate the speckle. Until 1969, people through research gradually found some useful information carried by the speckle, and gradually developed into a laser speckle measurement techniques.
Diffuse surface handheld laser lighting solid beam spread, and thus the diffuse reflection surface after laser speckle formed in space, in a certain space to determine the location of the observed
The individually made corrective lenses handheld laser eliminate the inevitable defects of the stack, almost entirely from X ray to 3/4 light field, the formation of 250 nm (millionth mm) diameter of the light field, close to the theoretical limit. X ray concentration can not only improve the measurement quality, but also open up study on the new way.
Suitable lens and reflector production has reached a very high handheld laser, but the standard lens made of beryllium, usually near the center is slightly too strongly curved. “Beryllium by molding precision mold lens. The shape error on the process sequence of hundreds of nanometers in is almost inevitable.” this led more focus by light scattering out, and because the laws of physics are inevitable. More importantly, the light distribution in a large area.
In order to optimize the focus, defect scientists first carefully measured handheld laser stack. Then they used precision laser in University of Jena, using quartz glass lenses. These data customization, this defect is not relevant in many applications. However, if you want to use X ray laser irradiation to the small sample, you to focus on a small area as much as possible.
No correction of the handheld laser, our focus is about the total X ray light distribution to about seventy-five percent, a diameter of about 1600 nm region. This is the theory can achieve about ten times as large as the focus area, when the glass is used, X ray seventy-five percent points can be concentrated to a diameter of about 250 nm region it is the best result, close to the theoretical value.
Spot speed “is a very unusual moment produced a number of definitions of.T0 A T1 in the photon arrival time, another group of handheld laser T0’to B in the moment t1′ moment, you call the ||A-B||/|t1-t1’| class light speed.
Even that is different handheld laser, but also can not exceed the speed of light. All of the analysis is the premise of any interaction will not exceed the speed of light. This light is bent only based on the premise that the endpoint line speed is not faster than light. I don’t know, measuring the speed of light concrete now. But it should be through measure the time difference reflected back to the starting location to determine the speed of light. Otherwise, the distance of two can determine how to determine the time difference!
Because the space of human understanding are handheld laser restricted. The rules in this light how good time occurs beyond the speed of light? Said two bodies in two places at the same time, regard them as an object, beyond the speed of light? The problem lies in the “” at the same time, because time is not from the speed limit. Two objects in different locations is different in different time. The place is different, the time difference is the speed of light!
The so-called not superluminal, refers to an object (handheld laser is not an object) movement speed or the speed of information dissemination can not exceed the speed of light. The wave group velocity wave (i.e. velocity) is not beyond the speed of light, but there is no limit to the phase velocity of wave.
Now viridian laser in the clinical treatment of periodontal disease in a more and more important role .Lazer pointer in the semiconductor material as the working substance, is the main compound semiconductor, with current injection for a small viridian green laser.green laser sight incentive mode from the middle of 1990s began for oral treatment, commonly used low power, wavelength of 780 ~ 980nm laser pointer for cats for periodontal treatment.
The experimental group used periodontal scaling and root planing combined with most powerful laser pointer treatment, the control group used periodontal scaling and root planing, handheld laser 1 months after treatment, the periodontal indexes after 3 months, the level of viridian laser 3 months after treatment, cell factor and molecular analysis using the method of lazer pointer and clinical attachment level change is better than that of control group, gingival crevicular fluid, and the two groups after treatment were significantly decreased, and the group is better than the group, there is statistical significance.
The evaluation index including green laser sight, laser pointer for cats, the probe depth and clinical attachment level. The results show that the deep periodontal pocket when no most powerful laser pointer treatment between the two groups; the medium depth of periodontal pocket, after treatment in the experimental group than the control group, the other indexes did not indicate that the handheld laser. of the test viridian laser only on the medium depth of periodontal pocket probing depth improvement.
Lazer pointer is mainly used in semiconductor treatment of periodontal soft tissue, the currently used viridian green laser wavelength range of 780 ~ 980nm. compared with the traditional method, the green laser sight in the process of discomfort and pain and less vibration sense, can reduce the patients in the treatment of oral pain and fear.Laser pointer for cats excision and ablation of periodontal tissue, to stop bleeding, light regulation of biological function.
Especially the emergence of miniaturized viridian laser, so that individual users can also design their own and create complex and has a certain function on the Lazer pointer. but the process can be heated to melt the thermoplastic resin is viridian green laser supplies, the material is not continuous, layer spacing of larger molecules, and by process characteristics of layer stack is caused by the poor green laser sight, these features lead to parts of brittleness, low impact strength, easy deformation, laser pointer for cats.
Join the most powerful laser particles in pointer, handheld laser and other reinforcements, eventually can not fundamentally improve the process of fused deposition molding components of viridian laser. especially in the aerospace field in Lazer pointer, lightweight and high strength requirements are increasing, while the viridian green laser can greatly increase in material manufacturing process green laser sight, reduce the manufacturing difficulty, but the poor mechanical properties of products also limit its development in the industry of laser pointer for cats.
Most powerful laser pointer in the factory, the surface of handheld laser were only suitable with a thermosetting resin infiltration process. The fiber and the melting heat using a simple viridian laser untreated plastic resin, it is difficult to make the fiber and resin Lazer pointer, the lead member fiber resin interface is poor.
Viridian green laser and green laser sight are inside the extrusion head, fiber bundle and laser pointer for cats most powerful laser pointer by two level reverse rotation under the uniform blend and blend in a spiral wound tightly compacting into cylindrical tow, handheld laser to the uniform distribution; extrusion head extrusion materials to molding and curing area fiber enhanced viridian laser.
Viridian laser projector is a brand a hotly contested spot, from Lazer pointer to viridian green laser, green laser sight to laser pointer for cats and the mainland, the new laser projector everywhere and is not a separate brand force. In addition to the most powerful laser pointer as the new brand that join.
Handheld laser the current theory is to achieve 3000 lumens of level, continue to enhance the difficulty is great. Because the viridian laser is not easy to solve the problem. And the brightness of lazer pointer has been to more than 6000 lumens, therefore in brightness viridian green laser could not obviously go for the engineering market. At present green laser sight color better, at the same time there is no color, so you can put an end to the rainbow phenomenon. Its future development is laser pointer for cats. but now its cost control is not very good, the short term there will be no more sudden outbreak.
Finally, we describe the traditional most powerful laser pointer handheld laser, due to the presence of all these years, the traditional light bulb has a kind of “viridian laser” feeling, in the price of raw materials rose today, Lazer pointer of the purchase price is reduced. This is due to the fierce market competition in the results. The original green laser sight light bulbs, the research on the new power source, laser pointer for cats technology changes have been few.
Although some have extended most powerful laser pointer bulb can realize the life, but because of the reduced application approach to extend the life of the brightness has not much market prospect of. Viridian laser in handheld laser under attack is still very rich in.Lazer pointer market is basically locked in the range, and will gradually shrink may one day just like the viridian green laser projector bulb, disappeared in the long river of history.