The field number can be easily located on a microscope, as it's typically written on the side of each lens, next to its magnifying power. For example, if the numbers on a microscope's objective lenses are 10X/15, 40X/20, and 100X/25, the objective magnifications would be 10X, 40X, and 100X, while the field numbers would be 15, 20, and 25, respectively.

Ua raws li lub ntiaj teb sib txawv hauv automation, Wavelength Opto-Electronic tuaj nrog ib tug tshiab series ntawm tsis siv neeg / motorized laser beam expanders. Qhov tsim tshwj xeeb ntawm lub rooj sib tham sib sau ua ke muab qhov chaw sib txuas lus sib txuas, lub cim xeeb raws li kev ua haujlwm, thiab qhov tseeb ntawm 10μm.

Whether you're examining a cell with an optical microscope or soldering components onto a printed circuit board (PCB), knowing the size of the object in view helps you complete your work more effectively. For example, knowing the size of a microscope field can help the observer determine how large an organelle within a microorganism is, and could also give other insights about important image features.

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FS = FN/(ME*MO), where  FS = field size, FN = field number, ME = eyepiece magnification, and MO = objective magnification

The 3D images that stereo microscopes provide also require consideration of depth of field, or DOF. The calculations aren't as straightforward as those for FOV, but a higher magnification is directly proportional to a greater depth of field. As with resolution, if observers need to distinguish between multiple layers of their specimen, they may need higher magnification at the expense of FOV. However, stereo microscopes typically have a larger default FOV than conventional compound microscopes, so the tradeoff is less with this type of scope.

The tradeoff between FOV and magnification means that observers have several factors to take into consideration when they choose how much power is right for their project. Two of these factors are resolution and depth of field.

Laser beam expanders yog cov khoom siv kho qhov muag tseem ceeb uas tswj xyuas thiab txhim kho cov kab teeb laser hauv ntau yam daim ntawv sau npe. Lawv yog qhov tseem ceeb hauv kev nthuav dav lub nqaj dav, kev sib tsoo, thiab kev sib txawv, ua rau lawv cov cuab yeej tseem ceeb hauv kev tshawb fawb, kev tsim khoom, kev sib txuas lus, thiab kev kho mob.

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In compound microscopes, the total magnification is the product of the eyepiece magnification and the objective magnification. objective: ​the first lens light ...

FOV is simply a measurement of the diameter of the image that the viewer can see. It's typically expressed as the diameter in millimeters of the observer's field of vision, and is used to quantify the size of the object under inspection.

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Peb muaj nuj nqis rau kev nyab xeeb ntau npaum li peb ua thiab koj tuaj yeem paub tseeb tias tag nrho peb cov kab hluav taws xob nthuav dav yuav raug kuaj nruj ua ntej kev muag khoom. Tag nrho peb qhov ruaj khov thiab zoom laser beam expanders yog telescopic los ntawm qhov xwm txheej thiab xav tau ib qho kev sib txuas lus sib txuas lus thaum xa ib qho kev nthuav dav collimated ntawm cov zis. Txhua tus qauv tsim los nrog cov lus qhia ntxaws ntxaws thiab phau ntawv ua haujlwm.

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Tam sim no peb nkag siab qhov txawv ntawm Keplerian thiab Galilean beam expander tsim, cia saib rau lwm qhov sib txawv. Lub laser beam expander kuj tuaj yeem raug cais raws li lub kaum sab xis saib, txawm tias qhov kev nthuav dav yog tsau lossis txawv. Piv txwv li, lub laser beam expander yog nyob rau hauv ib tug ruaj los yog zoomed magnification. Tsis tas li ntawd, raws li nws txoj kev tuning, lub zoomed laser beam expanders kuj tau muab faib ua phau ntawv los yog motorized zoomed configurations.

The field observation window also decreases quite rapidly when auxiliary lenses are added. A single eyepiece with a magnification power of 10X reduces the field of view by a factor of 10, so observers adding extra lenses should know just how much width they'll lose.

If an eyepiece is added, the field size is equal to the field number divided by the total magnifying power of the entire assembly. Since magnifying power compounds geometrically, the total magnifying power is the product of the microscope eyepiece and microscope objective lens. In this case, the field size can be expressed as:

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From the life sciences and medicine to semiconductors and jewelry, microscopes have become essential tools for many industries. They bring details to light that the naked eye could never see, but the insights viewers gain can be skewed if they don't know how large the image is. That's what field of view expresses.

A measurement of the diameter of the visible image, field of view (FOV) clarifies how much of the object the viewer is actually observing. This allows the viewer to analyze the specimen more clearly, perform any needed operations with greater precision, and have a better understanding of what they see. In this article, we'll show you how to calculate field of view, what it is, and some FOV differences for compound and stereo microscopes. Here's a deeper look.

Phau ntawv / lub cev muaj zog zoomed laser beam expanders muaj qhov sib txawv ntawm qhov loj ntawm qee yam. Qhov kev hloov pauv hauv kev nthuav dav no ua rau cov kab txuas txuas ntxiv muaj txiaj ntsig zoo rau cov ntawv thov uas xav tau kev tswj tau qhov loj ntawm cov nqaj loj. Peb muab zoomed beam expanders (BXZ thiab BXZ-MOT series) nrog rau cov nram qab no specifications:

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Daim duab 4 qhia tau hais tias ib txwm phau ntawv kho zoomed nqaj expander. Muaj ob lub nplhaib hloov kho, ib qho yog los teeb tsa qhov kev nthuav dav thaum lwm qhov yog los teeb tsa lub ntsej muag tsom thiab qhov sib txawv ntawm lub teeb laser.

Raws li pom hauv daim duab 1, Galilean beam expander tsim ua rau siv qhov tsis zoo thiab lub lens zoo nrog lawv txoj hauj lwm focal coincident nrog ib leeg thiab tag nrho ntev ntawm lub lo ntsiab muag yog qhov txawv ntawm ob lub focal lengths.

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It uses a spherical primary mirror and a corrector plate to reduce spherical aberration. The corrector plate is a thin, transparent lens that sits at the top of ...

Wavelength Opto-Electronic tsim thiab manufactures peb nyob rau hauv-tsev Ronar-Smith® hom ntawm laser beam expanders, muaj nyob rau hauv qhov sib txawv magnification configurations thiab hom Galilean thiab Keplerian. Nrog peb lub xeev-ntawm-the-art cov chaw tsim khoom thiab tsim peev xwm, koj tuaj yeem paub tseeb tias peb Ronar-Smith® laser beam expanders xav tau qhov zoo tshaj plaws nyob rau hauv beam broadening thiab collimation yam tsis muaj kev cuam tshuam rau qhov nthuav dav beam zoo.

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Lub tswv yim ntawm zoomed laser beam expanders ua hauj lwm nyob rau hauv lub internal translation theem thiab tsom mechanisms kho thiab account rau cov kev hloov nyob rau hauv magnification tsis tu ncua. Nws kuj txiav txim siab laser divergence thiab ua cov txheeb ze hloov kho yam tsis muaj kev cuam tshuam rau tag nrho cov tsev nyob ntev.

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Calculating a microscope’s field of view differs somewhat for compound and stereo microscopes. Both involve a calculation based on the total magnification of the microscope and a parameter on the lens, but stereo microscopes have other factors to consider.

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Once the field number and magnifying power of each lens in use are known, a simple equation exists to help observers find the total field size of the image in view. If the objective lens is the only magnifier in use, the field size is equal to the field number divided by the objective magnification of the lens, or:

Nyob rau hauv ib tug ruaj beam expander, lo ntsiab muag tsuas yog yuav tsum tau kho lub divergence lub kaum sab xis ntawm lub laser beam. Piv nrog rau lub zoomed beam expander, lub taag magnification beam expander nta ib tug ntau compact loj thiab sib zog.

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CO2 laser beam expanders yog tsim los ua hauj lwm nrog ntau zog (> 100w) CO2 laser. Peb tau tsim hauv qab CO2 laser beam expanders rau ntau yam CO2 laser siv:

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Beam expanderEquation

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In the above equation, note that field of view is inversely proportional to magnification power; a lower total magnification allows for a larger field, and a higher magnification results in a smaller field. This is to be expected, because the closer an observer zooms into an object, the smaller the window they view.

Magnification: 0.25x-10xDivergence Adjustability: YogLub kaum sab xis: 0 ± 0.06 °Pointing Stability: <1 mradwavelength: 257/355/532/1064/1550/1940/2800/9400/10600nm

Galilean beam expanders tuaj yeem siv rau feem ntau ntawm cov ntawv siv laser, nrog rau kev siv lub zog siab laser xws li laser npav, soldering, txiav, thiab lwm yam.

Raws li pom nyob rau hauv daim duab 1, Keplerian beam expander tsim muaj ib tug zoo lens khub nrog focal txoj hauj lwm coincident nrog ib leeg. Tag nrho qhov ntev ntawm lub lo ntsiab muag yog qhov sib npaug ntawm ob qhov focal lengths. Cov ntawv thov rau Keplerian beam expander tsim yog:

Lwm hom kev faib tawm yog ua raws li qhov cuam tshuam los yog kev xav tau. Yog li, lub laser beam expander tuaj yeem raug cais raws li refractive (feem ntau) lossis lub teeb pom kev nthuav dav. Muaj laser beam expanders tsim rau CO2 laser siv.

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Defined as the minimum distance at which an observer can distinguish two adjacent points, resolution increases with magnification. That means especially detailed objects may require the superior resolution that comes with higher magnification, even if the FOV is reduced.

As an example, a microscope having an objective lens with 100X magnification power and a field number of 25 mm would have a field size of 25 mm/100, or 0.25 mm. Similarly, if the same microscope added an eyepiece having a magnification power of 20X, the field size would be 25 mm/(100*20), or 0.0125 mm. Because the field size can be quite small, instead of expressing field size in terms of millimeters, some observers may multiply their value by 1,000 to convert their units to micrometers

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Magnification: 1x-50xBeam Divergence: Kho tauHom Tsim: Galilean / KeplerianPointing Stability: <1 mradwavelength: 266/355/405/532/633/1064/1550/2000/9400/10600nm

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Muaj ntau qhov kev teeb tsa ntawm laser beam expanders thiab lawv tuaj yeem ua pawg sib txawv. Piv txwv li, Keplerian thiab Galilean beam expander tsim yog ib txoj hauv kev ntawm kev faib cov laser beam expanders. Cia peb xub saib qhov sib txawv ntawm ob tus qauv no ua ntej peb delve rau hauv lwm qhov kev teeb tsa.

Txhawm rau txo cov teebmeem thermal hauv high-power lasers nrog rau kev tshem tawm cov chromatic aberration hauv ultrafast lasers, peb tuaj nrog cov qauv tshiab raws li kev xav pom qhov muag pom. Nws tuaj yeem siv los ua ib qho khoom siv ib leeg, lossis kev koom ua ke nrog lwm cov kab hluav taws xob sib kis.

The first step in determining the FOV is to find the field number on the objective lens. This number gives the diameter of the microscope field, assuming no other eyepieces or magnifiers are added.