VICKERS PHOTOPLAN FULL TRAVEL OF

Microscopy.The electrodes and micro - channel assembly were mounted on a Vickers Photoplan optical microscope , having a digital video camera output that was connected. Fluorescence spectra were recorded with the same system coupled by a fibre optic to the spectral analysis system described by Flerring (1983). Photographs were taken on Tri-X film. Made with a Vickers Photoplan microscope and long wavelength ultraviolet incident illumination, viewed through a GG40 + 2E barrier filter.

Until I unwrapped it and lifted it off. I was surprised when the delivery arrived on a pallet. This brightfield trinocular came with its proprietary 35mm film photography column, five Microplan achromatic objectives and 100w halogen kohler illumination. The design was a modular one available in various combinations of brightfield, incidental, phase contrast, polarization, DIC and florescence. The Vickers M17 was made in England and produced between the mid 1970's and early 80's. I won it for a reasonable ВЈ170.

WeвЂ™re accountable for every transaction CAE will seek to collect as much information as you. CAE has 2 microscopes currently available. CAE finds the best deals on used VICKERS M41. CAE has broad access to semiconductor related equipment direct from fabs, often unavailable through other sources.

A close examination of the condenser, objectives, and head unit showed no delamination or fungus, only one problem, a cracked leaf spring on the flip-top condenser which hindered secure holding of the top lens against the limit stop when swung in. The x/y stage controls moved very freely, too freely, and had long since lost any damping and lubrication. After a good clean I began checking things over, both the coarse/fine focusing knobs operated smoothly with no sign of vertical stutter or binding. Judging by the accumulation of dust it had been retired to storage uncovered for many years. To my surprise everything moved freely and nothing was missing. First impressions, built like a tank.

Condition is used and untested however appears in good condition, all optics are clear and in good condition. It dawned on me I'd landed on my feet with this one.Vickers M41 Photoplan microscope with accessories. This unit in its current configuration was over five thousand pounds in 1978. The binocular viewing head incorporates a slide containing three sets of beam splitters one directs all light to theI managed to find a PDF of the manual, specifications and a Vickers price list. After more dismantling, cleaning and testing It became obvious the engineering of the unit was top-notch and despite its age and long working life none of the control mechanisms had any slop or displacement.Vickers Photoplan Binocular Microscope Standard dovetail slide joints are used for all the major accessories and a variety of positions are provided on the microscope body for plugging in alternative light sources and photo cells.

This allowed the use of small magnets to hold diy 3D printed filters, held lightly they are quick to change and rotate freely.The removable turret needed no work and is impressive in both quality and weight. I made a replacement leaf spring from a 0.3mm feeler gauge (oh the joys of drilling spring steel) and a 3D printed attachment produced for the base of the condenser which has a steel ring embedded within it. This is a dry flip-top aromatic with a max NA of 90, unusually (to me) the iris diaphragm is sandwiched between 2 lenses internally and adjusted by a collar at the base. The photo tube needs modifying for use with projection eyepieces and a DSLR.First up the condenser.

This very closely matches the size of the original halogen filament and exhibits none of the uneven colour distribution or segments of the XHP50. The last photo below shows its replacement (in badly brushed blackout paint), a XHP35 (12v 12W max), this is a single die LED and 3.5mm vs the 5mm of the XHP50. Some testing showed the XHP50 was undesirable, uneven phosphorous distribution caused blotchy colour spots visible when focussing the lamp, the four segments of the LED's 5mm die construction also clearly visible. Care was taken to ensure the positioning and distance of the LED is identical to the original lamp filament, as is the diffusion filter. Using the original I designed a 3D printed replacement which incorporates a heavy heatsink and clamps for a Cree XHP50 5k LED (12v, 19W max), and a sliding shutter for the re-used diffusion glass of the original.

I've read various figures stated for Olympus NFK 125 LD eyepieces from 125mm to 150mm (the distance between the step on the eyepiece which rests against the photo tube, and the cameras sensor). The support arm and base of the photo column have light traps incorporated so it was simple to 3D print 2 intermediate tubes to accommodate the different focal lengths of the two projection eyepieces I use (more on that next).On the subject of projection eyepieces and the flange step to sensor distance. Point of note to experimenters printing microscope adapters, cheaply available M42-DSLR adapter rings are easily glued into a recess and far more durable than 3D printed bayonet mounts. Rather than use a weak 3D printed dovetail adapter I removed the shutter mechanism guts and made the DSLR adapter to fit inside that. One of the existing units of the Vickers photo system incorporated a shutter mechanism and had an original dovetail flange. I've got one on back-order but may take some time.Modifying the Photo tube for use with projection eyepieces and a DSLR was fairly simple.

Vickers Photoplan Full Travel Of

This unit operates between 13 and 22kHz along this range. I replaced the linear 100k potentiometer with a logarithmic one to give more control at lower illumination levels and added a 32k series resistor which limits the full travel of the pot to 700mA (8.4W 12v). This unbranded one is a mystery, its performance is very good, if anyone has information on it please post.Printed a control box which houses a cheap PWM motor controller. Below are the two projection eyepieces I use, one is an unbranded 2.5x which has a slightly longer par-focal distance of 175mm, hence the need for 2 different length intermediate tubes for the photo column. I've tested this extensively. The photo tube base on both my microscopes are par-focal with the main head eyepieces (if you place the LH binocular eyepiece in the photo tube you see the same as through the head eyepieces), in this situation the best flange to sensor distance for my NFK eyepiece is 165mm to be accurately par-focal with the camera.

The stage itself was stripped and any pits filled with epoxy, 3 fine grades of wet abrasive paper on a thick glass sheet was used to bring the surface flat, followed by 4 light coats of Simoniz satin black tough paint, how durable this is remains to be seen but so far is working well. The control column had a small amount of corrosion on the friction spring washers which was easily cleaned off. The bearings and the retainers were thankfully undamaged. After fully dismantling the stage and controls they were degreased and cleaned. Since my interest is mainly video I plan on making a flash system using a half mirror as and when I need one.The stage was the biggest part of the refurb. I don't recommend you use this driver for your own projects.

I hope this helps anyone who might buy one of these wonderful old Vickers M17 scopes, they are a joy to use.I took a chance on the Vickers M17 pictured below On the subject of projection eyepieces and the flange step to sensor distance. Here are a couple of pics of the completed scope, the objectives are not the original Microplan ones except the 4x which I found superior to the Bresser one I was using previously. How well this remains effective is anyone guess, but I suspect it will outlive me. To my surprise the grease is spot-on, it appears to be synthetic and has just the right amount of viscosity and stickiness for the job, it would not surprise me if this is the same grease used in most china-scopes today.

125mm is obviously the вЂrightвЂ™ number, because itвЂ™s written on the eyepieceBUT, thatвЂ™s for an Olympus microscope and an OM camera bodyI suspect that if you add up all the relevant numbers, you will find an explanation for why 165mm works for you.P.S.There are some brief notes about the M17 included here:Thanks Hobbyst. It looks a beauty.Regarding the NFK. I've tested this extensivelyVery nice too, Chris. The photo tube base on both my microscopes are par-focal with the main head eyepieces (if you place the LH binocular eyepiece in the photo tube you see the same as through the head eyepieces), in this situation the best flange to sensor distance for my NFK eyepiece is 165mm to be accurately par-focal with the camera. My findings are very different.

The main eyepieces are Vickers 10x WF Comp (compensating) ones which have a 20mm field of view. Not sure if it is my ageing eyes but I find it easier to see fine details under LED illumination (the replacement XHP35 is 6K btw, I forgot to mention it).