Delta Optical Discovery 40 Stereo Microscope 20x-40x
The Delta Optical Discovery 40 stereo microscope is a versatile instrument for observing surfaces in reflected light and for examining thin specimens in transmitted light using the built-in lower illumination. This dual lighting system makes it useful across a wide range of subjects and situations - from classroom teaching to professional product inspection. Biologists, naturalists, mineral collectors, philatelists, engravers and miniature enthusiasts will all find it valuable. It is an entry-level educational model from the Delta Optical range, combining ease of use with quality optics.
Three-dimensional image - natural and comfortable viewing
Stereo microscopes differ from standard biological microscopes in one important way: they produce a three-dimensional image of the observed object. You see depth in the image and can distinguish spatial relationships between individual details - what is closer to the lens and what is further away. This type of image is very natural and requires no special adaptation of the eye. Working with the microscope remains comfortable even during longer observation sessions, for example when sorting natural materials, inspecting jewellery or studying the surface structures of materials.
Quick magnification switching - 20x and 40x
The microscope features a rotating objective changer that allows fast switching between 20x and 40x magnification. This standard configuration is sufficient for most common applications - from observing insects and plant parts to inspecting the surfaces of coins or circuit boards. For more demanding users, optional eyepiece attachments with 20x magnification are available, allowing a total magnification of up to 80x. The optical system produces a sharp, high-contrast image with natural colour reproduction, which is especially important for documentation and educational use.
Battery power - use it anywhere
One of the practical advantages of the Discovery 40 is the ability to operate without mains power. The microscope can be powered by a battery module with a built-in AA rechargeable battery charger. This significantly increases the mobility of the instrument - you can use it in the field, on nature trips, during school excursions or anywhere a mains socket is not available. Standard mains power remains fully supported, so the microscope works equally well in a laboratory setting.
Camera adapter - document and share your observations
For users who want to document or share their observations, an optional 30.5 mm diameter adapter is available. This adapter allows you to connect a digital eyepiece camera or a professional microscope camera, which fits into one of the microscope tubes. Photos and videos can be easily transferred to a computer, used in teaching, scientific documentation or shared online. This expandability makes the Discovery 40 a long-term investment - the microscope grows with the needs of the user.
Who is the Delta Optical Discovery 40 for?
The Delta Optical Discovery 40 is suitable as a school or student microscope, but it is equally useful for experienced amateur naturalists or in small workshops and studios. Here is an overview of typical users and applications:
- Biologists and naturalists - observing animals, plants and natural samples
- Technicians and quality inspectors - examining product surfaces, welds and electronic components
- Collectors and engravers - detailed inspection of coins, stamps, jewellery and miniatures
- Schools and science clubs - classroom and group teaching
- Home laboratories - general hobby use and research
The wide range of applications and intuitive controls make it one of the most versatile stereo microscopes in its price category.
About Delta Optical
Delta Optical is a Polish manufacturer and distributor of optical instruments with a long tradition. The brand focuses on producing quality optics that are accessible to a wide audience - from entry-level students to experienced scientists. The Discovery series combines an affordable price with solid optical quality and practical features such as battery power and the option to add a digital camera. Delta Optical places emphasis on reliability, ease of use and the availability of spare parts and accessories, which makes their instruments a popular choice in schools, science clubs and home laboratories.
Technical specifications
| Parameter |
Value |
| Type |
Stereo microscope |
| Magnification |
20x-40x (up to 80x with optional eyepieces) |
| Objective changer |
Rotating, 2 positions |
| Illumination |
Dual - reflected (upper) and transmitted (lower) |
| Power supply |
Mains or battery module (AA rechargeable batteries) |
| Camera adapter diameter |
30.5 mm (optional) |
| Manufacturer |
Delta Optical (Poland) |
