Microscopy Forum

Zeiss Antique Brass Microscope This is a fine antique monocular brass microscope in its original case dating from approximately It has no makers name but there are features that attest to its quality. The brass is in good condition for its age. The microscope has two objectives each with its own brass objective pot and ine eyepiece. The stage has a slide holder and very unusually has a dissection plate assembly with tether points that can be attached to the microscope stage. Condition very good taking into account their obvious age. It is rare to find these units that have all the accessory filters still in place. The mirror does show its age but without pickling or loss of mirroring. These drawing attachments depend upon a balance of lighting between the illuminated specimen down the microscope and the light available for the drawing paper hence the range of neutral density filters in the box which can be used to balance the two.

How lenses used to be made will blow your mind

The microscope sits on a horseshoe foot. This form of horseshoe, with rear extension, might be more properly termed ‘Y’-shaped, but the ‘horseshoe’ designation has persisted. Coarse focus is by diagonal rack and pinion. The coarse adjustment knob has a smaller secondary knob on the left side for rapidly changing the coarse adjustment; this knob can be changed to fit on either side of the microscope.

At Carl Zeiss, the battle against these diseases has a tradition dating back to Robert Koch’s groundbreaking discovery. To this day, the company continues to set the standard with commitment and expertise in the struggle against deadly infectious diseases.

Owing to its function as a river crossing, Jena was conveniently located. Nevertheless, there were also some more important Saale crossings like the nearby cities of Naumburg to the north and Saalfeld to the south, so that the relevance of Jena was more local during the Middle Ages. The first unequivocal mention of Jena was in an document. In the 13th century, the Lords of Lobdeburg founded two towns in the valley: The city got a marketplace, main church, town hall, council and city walls during the late 13th and early 14th centuries making it into a fully fledged town.

In this time, the city’s economy was based mainly on wine production on the warm and sunny hillsides of the Saale valley. The two monasteries of the Dominicans and the Cistercians rounded out Jena’s medieval appearance. As the political circumstances in Thuringia changed in the middle of the 14th century, the weakened Lords of Lobdeburg sold Jena to the aspiring Wettins in Jena obtained the Gotha municipal law and the citizens strengthened their rights and wealth during the 14th and 15th centuries.

Moreover, the Wettins were more interested in their residence in the nearby city of Weimar , and so Jena could develop itself relatively autonomously. Early modern period[ edit ] Jena in The Protestant Reformation was brought to the city in Martin Luther visited the town to reorganize the clerical relations and Jena became an early centre of his doctrine.

In the following years, the Dominican and the Carmelite convents were attacked by the townsmen and abolished in Carmelite and Dominican.

Antique extremely rare Carl Zeiss’ first model brass microscope, 19th century For Sale

Fisher provided excellent analysis in a very difficult and complex matter requiring the evaluation of many important amendments to a trust document With over 30 years experience, M. Patricia Fisher provides critical analysis of testing results to determine inconsistencies and illuminate suspect details of questioned documents. Qualified to testify in over trials, presentation may encompass oral presentations, written reports with illustrative exhibits, and testimony with exhibits.

Surgical Microscopes from ZEISS The first prototypes of the first surgical microscope – the OPMI ® 1 – were developed at ZEISS in Oberkochen in the early s under the guidance of physicist Hans Littmann and the leading surgeon Prof. Dr. Horst Wullstein.

Over the next sixty years, this growing company became a manufacturer of optical lenses including those for the first Canon cameras and equipment used in cameras, binoculars, microscopes and inspection equipment. During World War II the company operated thirty factories with 2, employees, manufacturing binoculars, lenses, bomb sights, and periscopes for the Japanese military. In , the first Nikon-branded camera was released, the Nikon I. Duncan was working in Tokyo when the Korean War began.

This would cause some early problems in Germany as Zeiss complained that Nikon violated its trademarked camera. From to the Nikon F in particular was therefore labeled ‘ Nikkor ‘. Nikkor is the Nikon brand name for its lenses.

Microscopy

The telescope, complete with the original wood packing crates for the optical tube assembly and German Mount Head, arrived on 18 August from a collector in Belgium. After nearly four weeks of work we completed our illustrated article explaining these telescopes, and now this 4 inch telescope joins our other Unitron telescopes at our on-line virtual museum.

The article Unitron Model – 4. Click on image to see enlarged view 64, bytes In time we hope to add some optional accessories for the 4 inch telescope including the Unitron mechanical clock drive, a weight-driven motor based on the mechanics of a clock but geared to rotate the telescope Right Ascension axis about once every 24 hours. We already have some offers of help to add some other hard-to-find accessories for this telescope, these will be acquired over time for our exhibits.

ZEISS Microscopy Your partner in cutting-edge microscopy As a leading manufacturer of microscopes ZEISS offers inspiring solutions and services for your life .

It started as an eyeglass store and manufacturer of eyeglass frames, especially those made from vulcanite and grew to be an important source of optical instruments in the U. Here is a corporate timeline as a “double biography”: He sells spectacles, thermometers, field glasses, telescopes, magnifiers, opera glasses, microscopes, and hour glasses. Most products are imported from Germany. Edward Bausch, son of J. Bausch, is born on September Bausch goes to Europe to purchase optical goods and establish relations with producing houses.

Late s – Bausch finds a piece of vulcanite hard rubber on the street. He discovers that he can form eyeglass frames from the material. He enlists in Company C, 13th Regiment of the New York State Volunteers; is promoted to sergeant, lieutenant, and then captain; and is mustered out on May 13, The Civil War raises the price of gold the main material used for eyeglass frames at that time and blockades prevent the importation of European horn also used for frames because American horn was too brittle.

Therefore sales of Bausch’s cheaper vulcanite eyeglass frames soar. The name of the firm is legally changed to the Vulcanite Optical Instrument Company. Saegmuller, forming Bausch, Lomb, Saegmuller Company.

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Origins When I was a young university student my late father generously gave me a superb second-hand Zeiss Standard GFL microscope from the early ‘s with phase-contrast and darkfield. That was probably one of the main factors leading to my love for and, later, professional interest in microscopy and its application to the study of what I consider to be the microscopic biological objects par excellence – the unicellular eukaryotes protists or, in layman’s terms, the “plants” and “animals” composed of a single cell.

Over the years I have set up a personal working collection of mm tube length Carl Zeiss microscopes, which I use daily for my research and related activities. To me it looked like an extremely unusual museum piece, and a very ugly and cumbersome one too. It was about the size of a small electron microscope.

Find great deals on eBay for carl zeiss microscope. Shop with confidence.

Posted 03 September – In my personal opinion their top of the line products are just one out of five ways to go the others are Zeiss, Svarovski, Fujinon and Leica for me. I originally intended to buy a Fuji 16×70 about ten years ago, but two to three partially personal opto-mechanical as well as ergonomical preferences made me buy a more expensive competitory product after a long and hard struggle.

I do not regret this, but was a bit frustrated to almost having been mislead to buy what in the end had appeared to be in my case! However, in order not to go on “bashing Fujinon” now I am not going to repeat what these reasons had been and by the way still would be in my case. If I needed a 10×50 porro, it would indeed be the Fujinon 10x My personal philosophy is “Buy the best and forget!

Working with Microscopes

Magnetic resonance imaging and optical coherence tomography feature noninvasive imaging, but do not easily provide specific contrasts. Laser scanning microscopy LSM can use green fluorescent protein GFP or similar labels as contrasting agents for high resolution imaging of protein localization patterns in living organisms, but suffers from limited penetration depth in heterogeneous samples.

SPIM shines a sheet of laser light 2 to 8 mm thin through a slice of the sample and then systematically moves the specimen to capture images from each layer. Samples are embedded in a low-concentration agarose cylinder. Since any fluorescence imaging system suffers from scattering and absorption in tissue that can reduce image quality in large samples, the microscope can employ multi-view reconstruction, in which multiple 3D data sets of the same object are collected from different directions and combined in post processing for an optimal representation of the specimen.

In experiments in which the researchers imaged embryos of the teleost fish Medaka Oryzias latipes of the transgenic Arnie line that expresses GFP in somatic and smooth muscles as well as in the heart, SPIM was capable of resolving the internal structures of an entire 4-day-old fixed specimen with better than 6-mm resolution as deep as mm inside the fish.

Carl Zeiss (German pronunciation: [ˈkaɐ̯l ˈtsaɪ̯s]; 11 September – 3 December ) was a German scientific instrument maker, optician and businessman who founded the workshop of Carl Zeiss in which is still in business today as Carl Zeiss AG. Zeiss gathered a group of gifted practical and theoretical opticians and glass.

By Roger Segelken May 28, NEW YORK — Biomedical microscopic imaging deep inside living tissue with unprecedented clarity could become routine and widely available with the signing of technology-transfer and collaborative-research agreements today May 28, by Carl Zeiss Jena GmbH, a leading maker of microscopy instrumentation, and by CCTEC, the technology, enterprise and commercialization arm of Cornell University.

The license for two-photon laser microscopy also known as multiphoton microscopy, and protected by patents dating back to July 23, has been transferred from the British firm Bio-Rad Laboratories to Germany’s Carl Zeiss. Both Bio-Rad and Carl Zeiss have been manufacturing confocal laser microscopes incorporating multiphoton technology. Additionally, Carl Zeiss has signed collaboration and development agreements with Cornell, in Ithaca, N. Eckert Professor in Engineering. Multiphoton microscopy produces high-resolution, three-dimensional images of tissues — in the central nervous system, for example, or in pre-cancerous cells — with minimal damage to living cells.

The procedure begins when extremely short, intense pulses of laser light are directed at cells below the surface. The rapid-fire nature of multiphoton microscopy increases the probability that two or three photons will interact with individual biological molecules at the same time, combining their energies. The cumulative effect is the equivalent of delivering one photon with twice the energy half the wavelength, in the case of two-photon excitation or three times the energy one-third the wavelength in three-photon excitation to illuminate the smallest details.

As a scanning laser microscope moves the focused beam of pulsed photons across a sample at a precise depth plane of focus , cells above or below the plane are not affected. When repeated scans at different focal planes are “stacked” by computer processing, a brilliant, three-dimensional picture emerges.

57 jobs at Carl Zeiss Meditec

A bridge to an age when craftsmanship was as important as functionality, a vintage microscope is a work of art as well as science. The First Microscopes In the late 16th century several Dutch lens makers designed devices that magnified objects, but in Galileo Galilei perfected the first device known as a microscope. His invention, a compound microscope, had a convex and a concave lens. Later that century, Anton van Leeuwenhoek refined the microscope for biological research. These first fledgling microscopes were generally built and used by a scientist.

They can only be found in museums and are not available to the average antique microscope collector.

Carl Zeiss Jena Microscope Binocular Head Used in good working condition Some wear present – see pictures Bottom lens has scratches but still works See pictures for more details Thank you for bidding Carl Zeiss VOL for surgical microscope with built-in beam splitter.

I prefer solidly made binoculars, and have amassed a modest little collection of prized specimens, mostly acquired off eBayUK, but also charity shops and car boot fairs. I used to own a pair of 11×80’s bought off Leo Henzl Jnr in , but I sold them 10 years later. They were too heavy to hold for more than a couple of minutes, and on a photographic tripod, too awkward to point near the zenith. You really need a parallelogram mount for binoculars that size and larger.

I prefer a binocular you can carry with you to a star party, for casual star gazing. But I like good clean optics, and many modern binoculars are woefully deficient in optical quality, unless you shell out a grand or more for a top notch pair. It is easy to buy very high quality vintage binoculars on eBayUK, but you have to make sure the optics are clean, free of dust, dirt, insects, and fungus. You also have to make sure they’re collimated, and since most sellers do not understand what collimated means, you have to explain to them what to look for in a decollimated pair.

For a typical example of what can happen when buying a vintage binocular on eBay, see end of article. Field glasses are less of a problem in this respect because even if the barrels are not exactly aligned parallel to one another, you can still fuse the images, and field glasses are so low power, astigmatism is not an issue.

Another mystery Tessar

Who invented the microscope? A complete Microscope History Like many inventions today there are disputes in origins of the original inventors. The same dispute applies to who invented the microscope. Dating back to the first century when glass was first invented, the Roman’s were investigating the use of glass and how viewing objects through it, made the objects appear larger.

The ZEISS Group develops and distributes semiconductor manufacturing equipment, measuring technology, microscopes, medical technology, eyeglass lenses, movie and camera lenses, binoculars and planetarium technology.

It is produced and hosted as another way of expressing gratitude to those who have helped Company Seven prosper. With some of this content dating back to the times when slow dial-up Internet access was the norm, the article was originally text heavy because illustrations were by necessity kept simple and to a minimum. Over the decades we have, and will continue to, on occasion add this or that mention of or illustration of items in our archives and museum collection, this to break up the monotony of text, make corrections with much gratitude to Dr.

It was never our intent to write one comprehensive and all-encompassing history of Zeiss, that would require volumes to do it justice, but rather to explain why we at Company Seven remain grateful for and in awe of the achievements by Zeiss. From its inception through to the middle 19th century, lens making was a craft that was essentially passed on from generation to generation.

Innovations had typically resulted from trial and error experimentation; this was a costly and time consuming process that could not factor in all of the possible variables in lens making materials and design. It would be left up to one who could employ scientific methods of study, and then devise the mathematical formulas to characterize the physics of optics to make the next important technological leaps possible.

It would then be asked of a chemist to invent and manufacture those raw materials necessary to make the new designs possible. And it would be one man to bring this combination together to create a concern of unrivaled accomplishment.

Digital Classroom with ZEISS Microscopes