Barska Microscopes are precision optical tools ideal for professional lab, student studies, and hobby use. Manufactured with extremely small optical tolerances these professional microscopes allow the user to study the smallest of details. The several professional lab microscopes available feature advanced optical technology such as zoom magnification, stereo binoculars dual eyepieces, illuminating LED lights and optical filters. The newly designed LCD digital microscopes are available in 2 new models; an 8 mega pixel and a 5 mega pixel model. These new digital microscopes work great as student microscopes because they allow the user to take digital photos and videos that can be inserted in to reports. Teachers can you make use of these school microscopes when teaching such topics as microbiology and chemistry. We also have a selection of high quality blank and prepared microscope slides made of precision optical glass. If you need help selecting a microscope that’s right for you use call and talk with a microscope professional.
Barska Microscope Terminology
Here are some of the most common Barska microscope terminology features explained. This information will help you determine what each of the microscope features and specifications mean. Barska uses standard lab microscopes terminology in specifications to make choosing a professional microscope a quicker process.
Barska’s digital microscopes are state-of-the-art integration of high quality microscope and a digital camera. Simply connect the microscope to the computer with the USB cord to magnify the object and view them on your PC screen and with option to save. Digital microscopes are great for educational purposes because several people can view the specimen at once, unlike a traditional microscope where one person can view at time.
Total Microscope magnification – is calculated by multiplying the magnification of the eyepiece by the magnification of the objective. 10x(eyepiece) x 4x(objective) = 40x Total Magnification
Zoom Microscope Magnification – Zoom models allow the user to zoom or change magnification continuously throughout the magnification range providing a low to high power range. For example, a 7x-45x microscope has the ability to magnify the object 7 to 45 times higher than an unaided eye.
Widefield Microscope Eyepiece (WF)
Microscope eyepiece with an achromatic doublet lens designed in such a way that it does not have to be limited to viewing only in its center, and the portion of the lens that allows non-distorted viewing is larger than a normal lens. This appears to the user as a bigger aperture or “hole” to look through. It therefore has the advantage of being easier to use and more forgiving of a user’s head movements. An eyepiece listed as WF10X/18mm would indicate it has a widefield achromatic doublet lens, 10x magnification and is 18mm in diameter
Interpupiliary Distance Adjustment
When using a binocular microscope with interpupiliary adjustment, there is an adjustment for the distance between the viewers’ eyes. A young child will have a small interpupiliary distance (IPD) while an adult will have a larger one. The eyepiece lenses will spread apart or get closer together to fit each individual.
Generally a five-hole disc placed under the stage on a high power microscope. Each hole is a different diameter. By rotating it, you can vary the amount of light passing through the stage opening. This will help to properly illuminate the specimen and increase contrast and resolution. The diaphragm is most useful at the higher powers.
Microscope Working Distance
This is the distance between the specimen or cover slip and the objective lens. On compound microscopes that use slides, the stage is adjustable allowing the user to zoom in or out of an image. On stereo microscope the stage is fixed.
Coarse Focus – This is the rough focus knob on the microscope. You use it to move the objective lenses toward or away from the specimen. Generally use the coarse focus first to get close then adjust the fine focus knob for fine tuning.
Fine Focus – This is the knob used to fine tune the focus on the specimen. It is also used to focus on various parts of the specimen.
Barska Microscope Warranty
Microscope 1-Year Limited Warranty USA and Canada Only, This warranty does not cover consumer caused damages, abuse, normal wear-and-tear, unauthorized repairs or modifications. For more information, refer to enclosed warranty with products.
Types Of Barska Microscope Optical Systems
Microscopes have different types of optical systems that all different styles of observation. Dual eyepiece optical systems known like the ones in stereo microscopes allow for a perception of depth of field. Monocular microscopes use one optical ocular eyepiece resulting in a flat image. Here is a list of different optical systems:
- Monocular Microscopes – these types of microscopes contain one eyepiece resulting in a flat image.
- Binocular Microscopes – or also known as stereo microscopes have two eyepieces, one for each eye resulting in a more natural 3-D image.
- Trinocular Microscopes – have a third vertical viewing port can be used with an eyepiece for a second person, such as an instructor or they can be used with a microscope adapter for video or still cameras.
- LCD Digital Microscopes – these types of microscopes allow the user to view and microscopic objects on a color LCD display. The convert the magnified optical light with an image sensor into a video signal that plays on a screen.
Microscope Image Illumination Types
When selecting a microscope an important factor is how the microscope can illuminate the object. Different types of studies need different lighting methods, here is a list the different lighting options for microscopes:
- Transmitted and Oblique Illumination – Oblique lighting or top lighting shines down and reflects off opaque or solid specimens. Transmitted lighting or bottom lighting shines up through transparent objects. Not all microscopes will have these types of illumination.
- Mirror Reflected Light – Mirrored illumination is a simple and inexpensive lighting system that uses light from an external source (in direct sunlight, lamp etc) and reflects it upward to the condenser/specimen from a mirror located below the stage.
- Fluorescent Light – Fluorescent illumination provides a cool bright light. Ideal when viewing slides for long periods or studying live cellular specimens.
- Halogen Light – Halogen illumination provides the very brightest illumination, but tends to give off heat.
Types Of Microscopes
• Compound Microscopes
• Binocular Microscopes
• Monocular Microscopes
• Trinocular Microscopes
Types Of Microscope Uses
• Lab Microscopes
• Professional Microscopes
• Hobby Microscopes
• Teaching Microscopes
• Photo Microscopes