Compatible Lens Stemi (508-305)
We Make It Visible
- ZEISS
Optics
When it is about a microscope, lenses are one of the most essential parts of it. At Vision 360, as we never settle for anything else than the best quality and consistency, we develop instruments made with the highest quality and state-of-the-art technology. And for this, we have been associated with the most leading optic lens manufacturer Zeiss. With an association of more than a decade with this forerunner brand, for us, it is these attributes that always can make success. And therefore, we strive to give our best to clients. We develop instruments made with the highest quality and state-of-the-art technology.
We have always been a step ahead when it's all about technology. With the introduction of Greenough-type stereo microscope by Zeiss, Vision 360 procured it as we believe in walking with the technology. The Greenough-type stereo microscope gives you crisp 3D impressions, adaptable object illumination, and effortless sharing of images whenever one wishes. This microscope is useful for easy specimen handling and large to view the field. Solid, maintainable and easy to use, this specimen is perfect for the analysis of diamond and gemstone.
Greenough Stereoscopic Design
The basic idea behind a stereoscopic microscope is simple. It was formulated in 1896 by the biologist Horatio S. Greenough, who wanted to see small biologic samples magnified, but with the same quality as with unaided eyes. In other words, in three dimensions and with all the depth informa on he needed to understand the irregular shape of his specimen intuitively. He reckoned you could build a microscope with two separate beam paths facing the object from two directions, exactly as human eyes do when observing a small object at a distance of 250 mm. The brain would fuse the two images together and produce a spatial image of the object with a high degree of depth perception. This thinking led to the first factory-produced stereo microscope being developed by ZEISS.
Stemi 305 is a Greenough-type stereo microscope, combined with a continuous 5:1 zoom. It uses long working distances for easy specimen handling and large fields of view. It's compact, rugged, easy to use and easy to maintain, making it especially well-suited for intensive use in applications such as classrooms, where users frequently change, or by three-shift industrial inspection teams.
| Stemi 508 | Stemi 305 | ||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Optical Concept | Greenough | Greenough | |||||||||||
| Zoom Operation | Manual | Manual | |||||||||||
| Total Magnification with 1x Objectives and 10x eyepieces | 6.3x to 50x | 8x to 40x | |||||||||||
| Resolution(lp/mm) | 220 | 200 | |||||||||||
| Working distance with 1x Objective | 92mm | 110mm | |||||||||||
| Binocular tubes | Integrated | Integrated | |||||||||||
| Interpupillary Distance | 55-75mm | 55-75mm | |||||||||||
| Eyepieces | 10X | 10X | |||||||||||
| Field of View Number | 20 | `N/A | |||||||||||
| Object field(mm) | 36.8...4.6 | 28.8...5.8 | |||||||||||
| Operation Concept | Stereo microscope, Greenough design with 8:1 zoom range | Stereo microscope, Greenough design with 5:1 zoom range | |||||||||||
| Lens Body | Stemi 508 (binocular, incl. eyepieces 10x/23 Br. foc), Stemi 508 doc (phototube, incl. eyepieces 10x/23 Br. foc,) | Stemi 305 (binocular, incl. eyepieces 10x/23 Br. foc), Stemi 305 doc (phototube, incl. eyepieces 10x/23 Br. foc,) | |||||||||||
| Maximum Resolution | 225 Lp/mm basic version; up to 450 Lp/mm with interchangeable optics | 200 Lp/mm basic version; up to 400 Lp/mm with interchangeable optics | |||||||||||
| Maximum Object Field | 36 mm basic version; up to 122 mm using interchangeable | 29 mm basic version; up to 58 mm using interchangeable | |||||||||||
| Working Distance | 92 mm basic version; up to 287 mm using interchangeable optics | 110 mm basic version; up to 185 mm using interchangeable optics | |||||||||||
| ZEISS Stemi 508 | PL 10x/23 Br Foc | PL 16x/16 Br Foc | W 25x/10 Foc | ||||
|---|---|---|---|---|---|---|---|
|
Front Optics
FWD
|
Total Magnification
Min. Zoom
Max. Zoom
Object Field [mm]
|
Total Magnification
Min. Zoom
Max. Zoom
Object Field [mm]
|
Total Magnification
Min. Zoom
Max. Zoom
Object Field [mm]
|
||||
|
0.3
287
|
1.9
15.0
122.7
15.3
|
3.0
24.0
85.3
10.7
|
4.7
37.5
53.3
6.7
|
||||
|
0.4
211
|
2.5
20.0
92.0
11.5
|
4.0
32.0
64.0
8.0
|
6.3
50.0
40.0
5.0
|
||||
|
0.3 - 0.5
233 - 90
|
1.9
25.0
122.7
9.2
|
3.0
40.0
85.3
6.4
|
4.7
62.5
53.3
4.0
|
||||
|
2* 0.63
127
|
3.9
31.5
58.4
7.3
|
6.3
50.4
40.6
5.1
|
9.8
78.8
25.4
3.2
|
||||
|
1* 1x(without FO)
92
|
6.3
50.0
36.8
4.6
|
10.0
80.0
25.6
3.2
|
15.6
125.0
16.0
2.0
|
||||
|
1.5
53
|
9.4
75.0
24.5
3.1
|
15.0
120.0
17.1
2.1
|
23.4
187.5
10.7
1.3
|
||||
|
2.0
35
|
12.5
100.0
18.4
2.3
|
20.0
160.0
12.8
1.6
|
31.3
250.0
8.0
1.0
|
||||
| ZEISS Stemi 305 | PL 10x23 Br Foc | PL 16x14 Br Foc | W 25x10 Foc | ||||
|
Front Optics
FWD
|
Total Magnification
Min. Zoom
Max. Zoom
Object Field [mm]
|
Total Magnification
Min. Zoom
Max. Zoom
Object Field [mm]
|
Total Magnification
Min. Zoom
Max. Zoom
Object Field [mm]
|
||||
|
0.5
185
|
4
20
57.5
11.5
|
6.4
32
35
7.0
|
10
50
25.0
5.0
|
||||
|
2* 0.75
128
|
6
30
38.3
7.7
|
9.6
48
23.3
4.7
|
15
75
16.7
3.3
|
||||
|
1* 1x(Without FO)
110
|
8
40
28.8
5.8
|
12.8
64
17.5
3.5
|
20
100
12.5
2.5
|
||||
|
1.5
56
|
12
60
19.2
3.8
|
19.2
96
11.7
2.3
|
30
150
8.3
1.7
|
||||
|
2.0
43
|
16
80
14.4
2.9
|
25.6
128
8.8
1.8
|
40
200
6.3
1.3
|
1* by default configuration solitaire microscope & advanced microscope
2* by default configuration jewellery microscope
Lens Comparison Table
Inter Comparison of Carl Zeiss Stereo Microscopes
| Specification | Zeiss | ||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Stemi 305 | Stemi 508 | Discovery V8 | Discovery V20 | ||||||||||
| Optical Concept | Greenough | Greenough | Parallel Optics | Parallel Optics | |||||||||
| Zoom Range | 5:1 | 8:1 | 8:1 | 20:1 | |||||||||
| Zoom Operation | Manual | Manual | Manual | Motorized | |||||||||
| Total Magnification with 1x Objectives and 10x eyepieces | 8x to 40x | 6.3x to 50x | 10x to 80x | 7.5x to 150x | |||||||||
| Resolution(lp/mm) | 200 | 220 | 346 | 796 | |||||||||
| Working distance with 1x Objective | 110mm | 92mm | 81mm with Plan S1x Objective | 81mm with Plan Apo S0.63x Objective | |||||||||
| Binocular tubes | Integrated | Integrated | Various Binocular/trinocular tubes are available | Various Binocular/trinocular tubes are available | |||||||||
| Interpupillary Distance | 55-75mm | 55-75mm | 55-75mm | 55-75mm | |||||||||
| Eyepieces | 10X | 10X | 10X,16X,25X | 10X,16X,25X | |||||||||
| Field of View Number | N/A | 20 | 21,23,16,10 | 21,23,16,10 | |||||||||
| Object field(mm) | 28.8...5 | 36.8...4.6 | 23.0...2.9 | 23.0...2.9 | |||||||||
| Accessories: | |||||||||||||
| Camera | Yes | Yes | Yes | Yes | |||||||||
| Fluorescence attachment | No | No | Yes | Yes | |||||||||
Inter Comparison of Carl Zeiss Stereo Microscopes
| General Information(305) | General Information(508) | ||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Operation Concept | Stereo microscope,Greenough design with 5:1 zoom range | Stereo microscope,Greenough design with 8:1 zoom range | |||||||||||||||
| Main Component | Lens body,Stand and Illumination | Lens body,Stand and Illumination | |||||||||||||||
| Lens body | Stemi 305(binocular, incl.eyepieces 10x/23 Br. foc),Stemi 305 doc(Phototube, incl.eyepieces 10x/23 Br. foc) | Stemi 508(binocular, incl.eyepieces 10x/23 Br. foc),Stemi 508 doc(Phototube, incl.eyepieces 10x/23 Br. foc) | |||||||||||||||
| Stands | Ergonomic design with adjustable in height and inclination for longer use | Ergonomic design with adjustable in height and inclination for longer use | |||||||||||||||
| Input Power Supply | 110 - 240 Volt AC,60/50 Hz | 110 - 240 Volt AC,60/50 Hz | |||||||||||||||
| Optical data of the Basic and Optional System | |||||||||||||||||
| Magnification Range | 8x to 40x with basic version(10x eyepieces,no front optics)all magnifications from 4x to 200x (interchangeable optics) | 6.3x to 50x with basic version(10x eyepieces,no front optics)all magnifications from 2x to 250x (interchangeable optics) | |||||||||||||||
| Maximum Resolution | 200lp/mm basic version:up to 400lp/mm with interchangeable optics | 225lp/mm basic version:up to 450lp/mm with interchangeable optics | |||||||||||||||
| Maximum object field | 29 mm basic version;up to 58 mm using interchangeable | 36 mm basic version;up to 122 mm using interchangeable | |||||||||||||||
| Working distance | 110 mm basic version;up to 58 mm using interchangeable optics | 92 mm basic version;up to 122 mm using interchangeable optics | |||||||||||||||
| Stand | |||||||||||||||||
| Body | Light weighted aluminium body | ||||||||||||||||
| Focusing | Manual coarse adjustment with Tilting arm | ||||||||||||||||
| Illumination | |||||||||||||||||
| Dark-field illumination | Halogen based Lighting to See diamond structures bright against a dark background | ||||||||||||||||
General Information
| Operation Concept | Stereo microscope,Greenough design with 8:1 zoom range | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| Main Component | Lens body,Stand and Illumination | ||||||||||
| Lens body | Stemi 305(binocular, incl.eyepieces 10x/23 Br. foc),Stemi 305 doc(Phototube, incl.eyepieces 10x/23 Br. foc) | ||||||||||
| Stands | Ergonomic design with adjustable in height and inclination for longer use | ||||||||||
| Illumination | Three in one Option is available,which are Dark-field(Y&W),Ring type(W) and Combination of both (Y + W) with standard daylight | ||||||||||
| Input Power Supply | 110 - 230 Volt AC,60/50 Hz | ||||||||||
| Optical data of the Basic and Optional System | |||||||||||
| Magnification Range | 6.3x to 50x with basic version(10x eyepieces,no front optics)all magnifications from 2x to 250x (interchangeable optics) | ||||||||||
| Maximum Resolution | 225lp/mm basic version:up to 450lp/mm with interchangeable optics | ||||||||||
| Maximum object field | 36 mm basic version;up to 122 mm using interchangeable | ||||||||||
| Working distance | 92 mm basic version;up to 122 mm using interchangeable optics | ||||||||||
| Stand | |||||||||||
| Body | Aluminium and Brass body with anodising coating | ||||||||||
| Focusing | Manual coarse adjustment with Tilting arm | ||||||||||
| Illumination | |||||||||||
| Dark-Field illumination | LED based Lighting to see diamond structures bright against a dark background | ||||||||||
| Ring illumination | shadow-free bright LEDs in ring illumination for stereo effect. | ||||||||||
| Combine lighting | Combination of LED based Dark-Field and bright LEDs in ring illuminator | ||||||||||
| Overhead Day Light | Look at colored objects and giving soft light to observe glary or shining objects | ||||||||||
| Overhead Fluorescence | Observe the fluorescence of the diamond in the relief contrast | ||||||||||
| Polarization Add-On | Study birefringent objects,detect stress in Rough and Polished Diamonds | ||||||||||