Although brightfield microscopy is arguably the most common and simplest technique used in studying microscopic subjects, this doesn’t mean it is altogether less useful than other techniques. In fact, with the addition and advancements in 3d imaging, brightfield microscopy is unlikely to cease in being a vital element in research and experiments.
Basic Things to Know about Brightfield Microscopy
Bright field microscopy is generally used with a compound microscope. Once a sample or specimen has been placed properly and securely on a slide and consequently on the microscope’s stand, it is illuminated when white light passes through it from the light source below. Adjustments on objective and eyepiece magnification are necessary to obtain the best possible image of the sample.
Cells that are almost or completely invisible have to be stained with certain liquids to be discernible in brightfield microscopy. A dye of sorts can be used and applied once the sample has been placed on a slide. Its color-bearing ions have a positive charge that would react to the negatively charged cells of the specimen. Once this happens, the specimen would gain color that would cause it to contrast against its background.
There are various staining techniques one can use in dyeing samples and specimens. Gram Stain is, for instance, especially good in making bacterial cells visible by causing them to become either Gram negative or Gram positive.
A brightfield microscope is typically composed of the following parts: arm, coarse and fine adjustment knobs, base, body tube, condenser lens, objective lenses, oculars or eyepieces, and the stage or foundation of the microscope. If you are just using an ordinary bright field microscope, the maximum total magnification you can achieve is 1000x but it could be double the amount if, for instance, you are using an electron microscope with brightfield illumination.
There are two basic advantages to enjoy when using brightfield microscopes and that’s its uncomplicated design and simplicity of operation. Live cells are even immediately viewable with a brightfield microscope. There are, however, a number of disadvantages as well. A brightfield microscope possesses low levels of optical resolution and contrast.
A brightfield microscope is mainly used in inspecting liquid crystal boards and wafers as well as for blood tests and pathological examinations. There are a number of things one can do further improve the resulting images produced by brightfield microscopes. Adjusting the iris diaphragm can increase or reduce the light levels used to illuminate the sample. The use of oil immersion objectives as well as polarizing or colored filters can both enhance image resolution. Lastly, a brightfield microscope may also be capable of 3d imaging and this shall be discussed in the following paragraphs. For more information about brightfield microscopes, http://www.brightfield-microscope.com may be of help.
3d Imaging in Brightfield Microscopes
Not all brightfield microscopes are capable of 3D imaging. Expect to pay more, of course, when your model possesses this feature. There are many uses for 3d imaging in brightfield microscopes and these include but are not limited to the following: in science, 3d imaging from brightfield microscopes can be utilized in various areas of biology, chemistry, material sciences, forensics, botany, and so forth; in the industry, 3d imaging in brightfield microscopes can be used in computer analyses, quality control, whole mounts, geology, and various kinds of research.
Sometimes, 3d imaging is offered as an add-on feature and taking the form of an accessory piece or kit. The equipment may have to be attached directly to your microscope or if not that then installed in your computer and turn the photo captured by your brightfield microscope into something 3d.
If you are shopping for a brightfield microscope with 3d imaging capabilities, take note of the following factors:
Real-Time Observation – Some microscopes are only able to produce 3d imaging after the photos have been uploaded to a computer. But this could be inconvenient if you automatically need to observe certain features of your sample. Check as well if it can render 3d images even of live and mobile specimen.
No Need for 3d Glasses – Believe it or not but some applications actually require use of these glasses. This could be again inconvenient if you are already using a pair of glasses for vision correction.
Format – Lastly, check what kinds of format can be used in saving 3d images and videos.
Compatibility – If you are going to purchase a 3d imaging accessory or kit, make sure that it is first compatible with your microscope.
Whatever reason you have for purchasing a brightfield microscope, you’ll definitely appreciate it more if it comes with 3d imaging.