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Lighted Optical Magnifiers
SMTInspection proudly introduces its fine line of magnifiers.From Desk Top to Bench Mount, our magnifiers provide you with the correct amount of magnification and lighting to get the job done in a comfortable and ergonomic manner.As always SMTInspection provides its unsurpassed quality standards while still saving you money.
Browse the complete line by clicking here,
or order using the buttons below.
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| Magnifier Light 2000
Plastic shade with 5" round, 3-diopter glass lens, lens cover, 22 watt circular fluorescent light, 45" spring loaded arm and a table clamp. |
$95.00
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Magnifier Light 2000 (5 diopter)
Plastic shade with 5" round, 5-diopter glass lens, lens cover, 22 watt circular fluorescent light, 45" spring loaded arm and a table clamp. |
$95.00
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Magnifier Light 2000 (8 diopter)
Plastic shade with 5" round, 8-diopter glass lens, lens cover, 22 watt circular fluorescent light, 45" spring loaded arm and a table clamp. |
$95.00
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| Magnifier Light 1000
Metal shade with 5" round, 3-diopter glass lens, 22 watt circular fluorescent light, 45" spring loaded arm and a table clamp. |
$71.25
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Magnifier Light 1000 (5 diopter)
Magnifier Light 1000. Metal shade with 5" round, 5-diopter glass lens, 22 watt circular fluorescent light, 45" spring loaded arm and a table clamp. |
$71.25
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Magnifier Light 1000 & 2000 bulb
Magnifier Light 2000 and 1000 replacement bulb, 22 watt circular |
$6.65
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| Magnifier Light Mini PLUS
Magnifier Light Mini PLUS 3 diopter w/ 10 diopter insert, 12-watt fluorescent ring, 12" reach. |
$47.50
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Magnifier Light Mini PLUS bulb
Replacement bulb for Magni Light Mini PLUS, 12 watt fluorescent. |
$4.75
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Magnifier Light Mini
Magni Light MINI, 3 diopter, 12 watt fluorescent, 15" reach with rotatable head. |
$28.50
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Magnifier Light Mini bulb
Replacement bulb for Magnifier Light MINI, 12 watt fluorescent. |
$4.75
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What is a Diopter anyway?
Check the dimes at left. If the smallest is unmagnified...the others are 3, 5, 10 and 15 diopter.
Read below for the explanation.
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Definitions:
Diopter (d): A term used to identify the refractive (light bending) capacity of a lens. In magnifiers, there is a direct correlation between focal length and diopter. To find the diopter of a magnification lens, follow these steps. With the eyes 10" above the lens, move the object to be viewed to the point the greatest distance below the lens where it remains in sharp focus. Measure this distance and divide into 1 meter (39.37"). The result is the diopter of the lens - e.g., if the object is at a 13" distance than it is a 3-diopter lens (39.37/13 = 3d). Each diopter increases the size of the viewed object by 1/4 (25%) when the object is at its full focal length from the lens.
Field of View: The distance across the lens surface to which the viewer brings both his eyes (note: eyes should be 10" above the lens). It is important to note that as magnification increases, meaning the lenses used are stronger, viewing areas and focal length decrease.
Magnification: The degree to which the viewed object is enlarged. Magnification is usually expressed by a number followed by an "x", the symbol used to express power or the size of the object in relationship to its actual size.
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Common diopter/power relationships | |
Diopter | Power | % Bigger than object | Focal Length | |
3 | 1.75X | 75% | 13" | |
4 | 2.00X | 100% | 10" | |
5 | 2.25X | 125% | 8" | |
7 | 2.75X | 175% | 5.5" | |
8 | 3.00X | 200% | 5" | |
9 | 3.25X | 225% | 4.5" | |
11 | 3.75X | 275% | 3.75" | |
13 | 4.25X | 325% | 3" | |
16 | 5.00X | 400% | 2.5" | |
18 | 5.50X | 450% | 2.25" | |
20 | 6.00X | 500% | 2" |
Selecting The Right Magnifier
- Determine the desired magnification for your needs. Remember, as you increase magnification, you decrease both the focal length and the viewing area.
- Check to find out the correct diopter you need to achieve that magnification.
- Note the focal length and lens diameter that correspond to the magnification and lens diopter you have chosen, and make sure they are suitable for your task.
- As a general rule, because the working distance will be less than 8" above 5 diopter, stereo microscopes are recommended for rework purposes only.
Tips on Proper use of a Magnifier
To take best advantage of the comforts built into illuminated magnifiers, please keep these points in mind:
- Use both eyes. Magnifiers are designed as "working tools". They can be used as comfortably as a pair of glasses.
- Position the lens so that it is a proper distance from the work area, yet close enough for your eyes (8" to 10") so that you have the maximum magnification without distortion. Do not lean back away from the lens to increase magnification.
- Chair height and work surface should be positioned so the operator can maintain good posture while working.
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Copyright 2001 WA Brown Industrial Sales