AmScope B490 Compound Binocular Microscope
- 40X to 1000X with four DIN achromatic objectives
- WF10x eyepieces, 55 to 75mm sliding head
- Double-layer mechanical stage with stage stop
- Halogen brightfield with rheostat, 1.25 NA Abbe condenser
- Anti-mold surfaces for humid areas
- 16 by 9 by 12 inches
Updated 2 days ago · Based on the Amazon listing and published specifications, not hands-on testing.
A bench microscope with a spring-loaded high-power objective and a mechanical stage for slide work. It is optical only, with no camera.
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ASIN: B007LBFLSMModel: B490Category: Compound Binocular Microscopes
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Overview
A school lab or home study desk gets a binocular scope with a sliding head and a rotating, tilted viewing angle. Four objectives sit on a nosepiece, with an extra high-power lens for added resolution.
The reason to buy is a protective stage stop, spring-loaded objectives and a full condenser in a bench microscope. The limit is the listing mix, which shows a 240 volt rating and compatible devices such as televisions that do not fit an optical-only scope.
Who it's for
Biology classes and hobby labs that look at translucent slides under brightfield light are the target. It is not a digital microscope, and it is a poor fit for large three-dimensional objects.
Pros and cons
- Spring-loaded high-power objectives
- Mechanical stage with stage stop
- Rheostat light control
- Adjustable eye spacing
- Voltage entry unclear
- Compatible device entries are wrong
- Warranty not listed
Performance notes
The objectives multiply the view of the 10x eyepieces to reach the stated top power, and the oil objective improves resolution at high power. Brightfield light passes through the slide, and the iris and condenser control how much light reaches it. The stage stop prevents the objective from hitting a slide.
Specifications
| Brand | AmScope |
|---|---|
| Model | B490 |
| Dimensions & fit | |
| Stage size | 5-1/2 x 5-1/2 inches |
| Item dimensions l x w x h | 16"L x 9"W x 12"H |
| Power & efficiency | |
| Power source | Corded Electric |
| Voltage | 240 volts |
| Construction & materials | |
| Enclosure material | optical glass |
| Color | White |
| Included components | |
| Eyepieces | 10x widefield |
| Other details | |
| Magnification maximum | 1000 x |
| Objective lens description | 4x, 10x, 40xS, 100xS (oil) DIN achromatic |
| Light source type | Halogen, LED |
| Interpupillary distance | 55 to 75mm |
| Real angle of view | 45 degrees |
Frequently asked questions
Is the AmScope B490 a digital microscope?
No. It is an optical binocular compound microscope. The listing lists devices such as phones and televisions, but no camera is described.
Which objectives does it have?
4x, 10x, 40xS (spring) and 100xS (spring, oil) DIN achromatic objectives.
Can the light be adjusted?
Yes. The halogen light has a rheostat, and the condenser has an iris diaphragm.