8:1 high zoom ratio, apochromatic zoom optics

ZEISS STEMI 508 is equipped with ZEISS stereomicroscope top optical components, a solid body and precise mechanical structure, specially built for heavy-duty work. It adopts 8:1 high zoom ratio Greenough stereo optics and ZEISS apochromatic zoom optical elements.

Excellent advantages given by large field of view and high zoom ratio

The flat and wide 36mm field of view not only allows you to observe comfortably, but also gives STEMI 508 the advantage of instantly grasping the entire sample. By adding auxiliary optics, samples up to 122 mm in diameter can be observed. The zoom body supports a zoom range from 0.63x to 5x, with a zoom ratio of 8:1, allowing you to not only enjoy a wide field of view, but also easily observe minute details on the sample. Greatly improve work accuracy and efficiency.

ZEISS apochromatic optics: high contrast, precise color

With the ZEISS STEMI 508 you can obtain color-accurate and extremely sharp stereoscopic microscopic images. Even "achromatic" lenses whose surface curvature has been precisely calculated will still produce some dispersion when light passes through them. "Apochromatic" lenses add an optical lens to the front and rear of a precision-designed achromatic lens to target wavelengths. The refraction paths of shorter and longer rays are corrected respectively, so that each color light is accurately focused on the same point, making the image clear and sharp. The interchangeable auxiliary lens and eyepiece allow the magnification to be freely adjusted from 2x to 250x. Whether you want to increase resolution by up to twice or have an ultra-long working distance of 287mm, it’s easy with ZEISS STEMI 508.

Design ideas to enhance work efficiency

In order to maintain your consistent high efficiency, ZEISS considers users in all its products and introduces many humanized ingenuity: the observation tube with an inclination of 35 degrees, the convenient and intuitive lighting control system, and the heightening, so that you can use it naturally. Gesture-operated zoom ontology.

LED light source specially designed for microscopic observation

Generally speaking, the light excited by LED is actually a bluish monochromatic light source, and the wavelength of the light source depends on the semiconductor material used. In order to produce white light, most manufacturers coat the LED packaging material with yellowish fluorescent paint, so that the penetrating light has a lighting effect similar to white light. In order to create white light that is more suitable for microscopic observation, ZEISS directly combines blue LED chips with some specific fluorescent materials, and converts part of the blue light into longer wavelength colored light when excited. In this way, it can not only improve the quality of lighting , it can also greatly extend the service life of the light source and maintain a constant color temperature under long-term use. The lamp source produced by ZEISS has a lifespan of up to 25,000 hours, which is equivalent to 12 years of continuous use (5 days a week, 8 hours a day).

Integrate a variety of lighting to suit various tasks

ZEISS has carefully created a perfect ecosystem for the stereo microscope product line. You can match it with different bases or brackets according to your needs. Each option has multiple lighting options to correspond to different observation situations.

K-type EDU base - a good choice for space saving

The K EDU base is equipped with a lateral oblique light source that can be lifted, adjusted, and focused. The height and angle of the light source can be manually adjusted directly along the track, and the light source can be focused by moving the lamp head back and forth. There is a penetrating light source at the bottom, and the light and dark field of view can be instantly changed through the right lever without moving the observation object or disassembling the base. The operation is smooth and intuitive.

K-type LAB base - ALL in One value-for-money combination

The K LAB base integrates more powerful lighting equipment while still retaining the compact design of the K-type base. The upper part is equipped with a double-tube snake lamp that can freely adjust the illumination direction and angle. The lower penetrating illumination can adjust the angle of the light source, switch between light and dark fields, or use both light and dark fields at the same time, and adjust the ratio of the two in the picture.

K-type MAT base-testing helper for electronic components

The K MAT base is specially designed for the electronics industry and is equipped with an ESD anti-static coating carrier, as well as a set of multi-functional ring lights and recessed lighting regulators. Suitable as a visual aid when inspecting or processing electronic samples.

M-type base-all-round professional assistant

Equipped with a lighting memory system and a large stage, it is suitable for larger samples and supports thicker samples and larger working distances. Integrated lighting. Equipped with a double-tube snake lamp and penetrating downlight that can freely adjust the illumination direction and angle. The penetrating illumination of the M-type LAB base can adjust the angle of the light source, switch between light and dark fields of view, or use both light and dark fields at the same time, and adjust the ratio of the two in the screen.

SF large base

The simplest, most stable and affordable lightless combination, suitable for users who need special light sources or use fiber optic lighting. Lighting combinations can be freely matched.

Observation sample sharing

Hazelnut Slicing - Bright Field Transillumination, 5X Zoom Magnification

Observation sample sharing

Royal Featherleaf Plant - oblique lighting + dark field ring lighting, 0.63X zoom magnification

Observation sample sharing

High brightness LED chip - oblique lighting, 1.25X zoom magnification

Observation sample sharing

Microfluidic device - bright field ring light illumination, 0.8X zoom magnification

ZEISS STEMI 508 Parts Description

ZEISS STEMI 508 Series Microscope Dimensional Drawing

STEMI 508 series microscope configuration diagram

Product specifications

Optical system	Greenough Optics, stereomicroscope
Zoom body	ZEISS Stemi 508 Binocular/ ZEISS Stemi 508 Doc
zoom range	The zoom range of the zoom body is 6.3x~50x, which can be adjusted with the objective lens and auxiliary lens
Screen resolution	Basic configuration: 225 Lp/mm; add auxiliary mirror to reach: 450 Lp/mm
working distance	Basic configuration: 92mm; with auxiliary mirror, up to: 287mm
Maximum actual field of view	Basic configuration: 36mm; With auxiliary mirror, reach: 122mm
Suitable for focusing bracket	Diameter 76mm, international size
eyepiece	Standard configuration: PL10×/23 Br. foc; optional PL16x/16 Br.foc, W25×/10 foc
K type base size	Bottom surface 200 × 310 mm, focus bracket height 250 mm, focus stroke 145 mm
K EDU base features	Oblique top light + light and dark field transmission bottom light
K LAB base features	Snake neck LED lighting + advanced adjustable Bright and dark field transmission bottom light
KMAT Base features	Ring-shaped upper light source + ESD anti-static base
M Base features	Heightened focusing column + enlarged stage + snake-neck LED lighting + advanced adjustable light and dark field of view, transmitted bottom light + lighting brightness memory function
SF Base features	Heightened focusing column + enlarged stage (no light), size 400x300x278.5mm
Lighting color temperature	5600K
power input	12V DC 24W/100... 240V AC/50...60Hz.