Stemi 305

Stemi 305 is your compact stereo microscope with a 5:1 zoom – equally at home in the biology classroom, research lab or on the industrial shop floor. Choose between predefined microscope sets to get the optimal illumination equipment or your applications. Stemi 305 lets you observe samples as they really are: three-dimensional and crisp in contrast – no preparation needed. Enjoy all the advantages of an easy-to-use microscope with integrated LED illumination for reflected and transmitted light – plus fast, easy-to-use documentation. Just snap your images with the integrated 1.2 Megapixel Wi-Fi camera and share them using Labscope, the iPad imaging app. Or choose the conventional phototube for access to all ZEISS Axiocam cameras and free ZEN lite imaging software. This Greenough microscope will give you crisp 3D impressions, versatile object illumination and easily acquired images to share, whenever you want.
Technical Specification
Overall | |
Type of Microscope | Stereo microscope, Greenough design |
Design Principle | Two zoom systems, tilted by the stereo angle |
Stereoscopic View | Three-dimensional observation through eyepieces |
Optical Data Basic System (Eyepieces 10×, No Front Optics) | |
Magnification Range | 8× – 40× |
Free Working Distance | 110 mm |
Maximum Resolution | 200 Lp/mm – 2.5 μm |
Maximum Object Field Diameter | 29 mm |
Optical Data with Interchangeable Optics (Eyepieces, Front Optics) | |
Accessible Magnification Range | 4× – 200× |
Free Working Distances | 43 – 185 mm |
Maximum Resolution | 400 Lp/mm – 1.25 μm |
Maximum Object Field Diameter | 58 mm |
Microscope Bodies | |
Manual Zoom, Zoom Range | 5:1 (0.8× – 4.0×) |
Quality of Zoom Optics | Low distortion, crisp in contrast |
Parfocality of Zoom Optics | Object remains focused while zooming |
Viewing Angle | 45° |
Adjustment of Interocular Distance | 55 – 75 mm |
Zoom Click Stops | Five positions: 0.8×, 1×, 2×, 3×, 4× |
Maximum Field Number | 23 mm |
Integrated near Vertical LED Illumination | Integrated in each Stemi 305 microscope body, powered by stands H EDU/LAB/MAT or controller K LED, illumination angle 10° towards optical axis |
Documentation Features Stemi 305 trino | Photoport with 50/50 split to the left, integrated camera adapter 0.5×, c-mount interface |
Documentation Features Stemi 305 cam | Integrated 1.2 Megapixel Wi-Fi camera, wireless transmission of image signal* |
Interfaces | (*Please ask your local contact for approval in your country.) |
Front Optics and Polarization Analyzer | M52 |
Eyepieces | d = 30 mm |
Stemi Mounts | d = 76 mm |
Illuminators | d = 66 mm |
Each Microscope Body incl. Eyepieces 10×/23 Br. Foc and Spiral Cable RJ12 |
Compact Stand System K | |
Stand Base | W190 × D310 × H35 mm (K LAB: H90 mm) |
Working Surface | W160 × D195 mm |
Column with Stemi Mount, Handle and Focus Drive, Friction Adjustable | |
Height | 250 mm |
Lifting Range | 145 mm |
Interface to Microscope | d = 76 mm |
Interfaces for Stages | d = 84 mm |
Interface for TL Polarizer | d = 45 mm |
Interface for LED Spot K and Double Spot K | Slot in focus drive |
Incl. Glass Plate or Black/White Plate D = 84 × 5 mm, Dust Cover | |
Stands K, Separate Versions | |
Stand K mechanical stand without electronics with 2× M8 interface for supporting arms of fiberoptic light guides | |
Stand K MAT with reflected light LED electronics and ESD features (antistatic surface resistance) | |
Stand K EDU with reflected/transmitted light LED electronics and built-in flat transillumination unit (brightfield/darkfield) | |
Stand K LAB with reflected/transmitted light LED electronics and built-in mirror transillumination unit (brightfield/darkfield/oblique) | |
Electronic Features of Stand K EDU/LAB/MAT | Separate control knobs for reflected/transmitted light (on/off/dimming) |
2 sockets to adapt Stemi 305 bodies (integrated vertical illumination, Wi-Fi camera) and a second reflected light illuminator K | |
Separate control of vertical/second RL illumination by pushing the reflected light dimming knob (A ¦ B ¦ mixed light A+B ¦ Off ¦ …) | |
Integrated Power Unit, Easily Changeable | 12 V DC 24 W / 100 … 240 V AC / 50 … 60 Hz |
Optical Specifications K LED Illuminations (For Stands K EDU/MAT/LAB) | |
Color Temperature | Typ. 5600 K |
Lifetime (Lumen Maintenance) | Typ. 25000 h (operation time until the light intensity degraded to 70% of initial value) |
Integrated near Vertical LED Illumination | Brightness max. typ. 20000 lx (Stemi 305 focused) |
LED Spot K, Height Adjustable, Zoomable | Brightness max. typ. 30000 lx (object field center, LED spot mounted to stand K) |
LED Double Spot with Goosenecks, Self Carrying | Brightness max. typ. 90000 lx (object field center, double spot mounted to stand K) |
Segmentable Ringlight K | Brightness max. typ. 55000 lx (mounted to Stemi 305 body, object focused) |
Working distance 50 mm – 300 mm (also suitable for front optics 2.0×, when shifted upwards) | |
Built-in Transmitted Light LED Illuminations: | |
Flat transillumination unit (stand K EDU) | Brightness max. typ. 20000 lx (brightfield) |
Mirror transillumination unit (stand K LAB) | Variable contrasting by rotatable and slidable mirror, brightness max 25000 lx |
Stands N | ||
Large Stand Base | W440 × D370 | |
Column Height/Diameter | 350 or 450 mm/d = 32 mm | |
Interface for Stages | d = 84 mm | |
Incl. Black/White Plate D = 84 and Security Ring | ||
Additionally Needed: Stemi Mount for Column 32 with Drive | ||
Stages for Interface d = 84 mm | ||
Gliding stage ±20 mm, rotatable, d = 84 mm | ||
Ball-and-socket stage ±30°, rotatable, d = 84 mm | ||
Rotating polarization stage for stereo microscopes, with interfaces for polarizer and lambda plate | ||
Boom Stands | ||
Single Arm Boom Stand A | ||
Stand Base Dimensions/Weight | W260 × D260 × H20; 13 kg | |
Boom Length/Diameter | 600 mm/d = 37 mm | |
Working Radius (Incl. Stemi Mount) | Max. 615 mm | |
Tilting or Non-tilting Head, Height/Diameter | 200 mm/d = 32 mm | |
Double Arm Boom Stand SDA | ||
Stand Base Dimensions/Weight | W350 × D350 × H50; 31 kg | |
Double Arm Boom Stand, Ball-bearing, Length | 670 mm | |
Working Radius (Incl. Stemi Mount) | Max. 695 mm | |
Tilting Head Integrated, Column Height/Diameter | 200 mm/ d = 32 mm | |
Tilting Arm Stand U with Articulated Suspension Arm l | ||
Arm Length / Lifting Range / Load Capacity | 580 mm / 500 mm / 2 – 4,8 kg | |
Working Radius (Incl. Stemi Mount) | 735 mm, 1060 mm with traverse S (option) | |
Table Clamp For Tables Thickness | 5 – 75 mm | |
Stand Head Length/Diameter | 100 mm/d = 32 mm | |
Additionally needed for all boom stands: Stemi mount for column 32 with drive or Stemi mount 0 – 90° without drive |
Fiberoptic Illuminations | |
Cold Light Source CL 4500 LED CRI90 with High Power LED Engine | |
Light flux at 9 mm fiber output dia. | Typ. 450 lm |
Color Temperature | Typ. 5400 K |
Color Rendering Index | >90 |
LED Lifetime (Lumen Maintenance) | 50000 h |
Light Guide Sensor | Auto on/off |
2 Position Filter Slider | 2 filters and free opening |
Wide-range Supply | Max. 50 W |
Flicker free light, silent axial fan, 2.5 mm phone socket for foot button S | |
Cold Light Source CL 1500 HAL with 150 W Halogen Reflector Lamp | |
Light Flux at 9 mm Optical Output Diameter | Up to 600 lm |
LCD Display | Brightness/color temperature/power-on hours |
Bulb Lifetime at 80% Dimming (450 lm) | Typ. 150 h |
Filter Slider | One filter d=28 mm and free opening |
Wide-range supply for flicker free light, silent axial fan | |
Light Guides | |
One- And Two Branch Flexible Arm Spot Light Guides
Additional supporting arms needed
|
Oblique light, crisp 3D impression by distinct shadows |
One- and Two Branch Gooseneck Spot Light Guides | Oblique light, self-carrying, crisp 3D impression by distinct shadows |
Annular Ring Illuminators d = 66 mm for Brightfield | Shadow free illumination |
Annular Ring Illuminators d = 66 mm for Darkfield | Shadow free illumination |
Line Light 50 mm | For homogeneous grazing light |
Vertical Illuminator | For illumination of deepenings |
Diffusor S | Shadow free all sided soft light, „cloudy day illuminator“, avoiding glare |
Diffuse Area Light | One sided „soft“ illumination, avoiding glare but creating certain shadows |
Illumination Accessories | |
Focusing Optics for Spot Light Guides | Increasing brightness |
Polarizing Equipment for Spots and Ringlights | Reducing reflections |
Fiberoptic Illuminations | |
Cold Light Source CL 4500 LED CRI90 with High Power LED Engine | |
Light flux at 9 mm fiber output dia. | Typ. 450 lm |
Color Temperature | Typ. 5400 K |
Color Rendering Index | >90 |
LED Lifetime (Lumen Maintenance) | 50000 h |
Light Guide Sensor | Auto on/off |
2 Position Filter Slider | 2 filters and free opening |
Wide-range Supply | Max. 50 W |
Flicker free light, silent axial fan, 2.5 mm phone socket for foot button S | |
Cold Light Source CL 1500 HAL with 150 W Halogen Reflector Lamp | |
Light Flux at 9 mm Optical Output Diameter | Up to 600 lm |
LCD Display | Brightness/color temperature/power-on hours |
Bulb Lifetime at 80% Dimming (450 lm) | Typ. 150 h |
Filter Slider | One filter d=28 mm and free opening |
Wide-range supply for flicker free light, silent axial fan | |
Light Guides | |
One- And Two Branch Flexible Arm Spot Light Guides
Additional supporting arms needed
|
Oblique light, crisp 3D impression by distinct shadows |
One- and Two Branch Gooseneck Spot Light Guides | Oblique light, self-carrying, crisp 3D impression by distinct shadows |
Annular Ring Illuminators d = 66 mm for Brightfield | Shadow free illumination |
Annular Ring Illuminators d = 66 mm for Darkfield | Shadow free illumination |
Line Light 50 mm | For homogeneous grazing light |
Vertical Illuminator | For illumination of deepenings |
Diffusor S | Shadow free all sided soft light, „cloudy day illuminator“, avoiding glare |
Diffuse Area Light | One sided „soft“ illumination, avoiding glare but creating certain shadows |
Illumination Accessories | |
Focusing Optics for Spot Light Guides | Increasing brightness |
Polarizing Equipment for Spots and Ringlights | Reducing reflections |
Ambient Conditions | |
Storage (in Packaging) | |
Permissible Ambient Temperature | +10 to +40 °C |
Permissible Humidity | Max. 75 % to +35 °C (without condensation) |
Transportation (in Packaging) | |
Permissible Ambient Temperature | -40 to +70 °C |
Operation | |
Permissible Ambient Temperature | +10 to +40 °C |
Permissible Humidity | Max. 75 % |
Air Pressure | 800 hPa to 1060 hPa |
Degree of Pollution | 2 |
Area of Use | Closed spaces |
Max. Altitude | Max. 2000 m |
Operational Data – Power Supply, Microscope, Controller K LED | |
Protection Class | II |
Protection Type | IP 20 |
Electrical Safety | Acc. to DIN EN 61010-1 (IEC 61010-1) allowing for CSA and UL specification |
Degree of Pollution | 2 |
Overvoltage Category | 2 |
Power Supply | 100 to 240 V ±10 % |
Converting the line voltage is not necessary! | |
Power Frequency | 50 Hz − 60 Hz |
Power Consumption: Stage Power Supply with Microscope | Max. 40 VA |
Output Power Supply Microscope and Controller K LED | 12 V DC, max. 2 A |
Input Output Power Supply Microscope and Controller K LED | 100 − 240 V, 50 − 60 Hz, max. 0.55 A |