View allAll Photos Tagged microscope
Getting stuff together to ship to the little one in ABQ before Christmas. I never was very good at just buying 'toys'. Figure I'll let my daughter come up with something for #19 if she asks.
Through the microscope lens. Swimming micro-organisms. Come to greeninventionscentral.blogspot.com for the companion post Wilderness and the Swimming Zeepies
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An interesting look at everyday things.
I bought a cheap USB powered Microscope and then started exploring. Some of the images were very unexpected so I thought I would post a few.
2015
This is what I use when I do some of my engraving, it comes in really handy with detailed crests on signet rings. The scope is at working distance as you see it here, so there is a lot of room to work.
Video of a feedback loop caused by filming the pixels of a video feed (of the pixels of the same video feed) using a USB microscope.
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Incredible gift from Pooja's grandfather . . . his company, Labomed, manufactures and sells microscopes for academic and medical professionals.
When I complain about being stuck in a darkened room using a microscope, this is the microscope in question. Normally I keep the room darker than this, but I turned up the dimmer a little to take the photo. It's a Zeiss LSM 5 PASCAL (Axioskop 2 "mot plus") confocal microscope.
The idea is that you locate the sample on your slide using the normal stereo microscope part (the eyepieces you can see) with the sample illuminated with filtered light from the mercury lamp. Then you switch to using the LASER scanning system (with illumination from the Argon and HeNe LASERs) for finer positioning, selecting the start and stop depths of the volume you want to image, etc. All of that later step is done from the computer rather than the eyepieces.
Before having an aquarium, I used to collect pond water as a kid and would have all sorts of monstrosities (including leeches) in muddy water.
For the germ-paranoid: No, this is not water directly from the tap. I think this might be 50x magnification.
The microscope basically consists of a CD-ROM pickup unit. It contains an infrared laser diode, some optical components, a movable lens and a photodiode array. The laser diode is driven by an LM317 in current control mode. A single photodiode is connected to an amplifier. The current sensing resistor is a trim potentiometer to adjust the sensitivity.
Forus and tracking coils (which move the lens) are driven by NPN transistors attached to the output of a DAC with a carefully chosen base resistor inbetween.
The whole pickup unit is glued to a CD-ROM BLDC spindle motor with the lens facing down. A spring keeps it in position. Current flowing through a single motor phase creates a small amount of movement in the direction perpendicular to the tracking movement of the lens. The movement is rotational and not linear. That creates some distortion in the resulting pictures.
The motor is also driven by a DAC and NPN transistor combination.
A microcontroller communicates with the DACs and slowly moves the lens across the object. After every small movement the photodiode response is sampled by an ADC and the value used as brightness value for a single pixel of the final picture.
Aspect ratio is just roughly adjusted. Several kinds of distortion can be seen in the resulting pictures, resulting from non-linear movement, friction, mechanical shaking and so on.
The aluminum tray is handy to get the target object into position. It is attached to the tray by adhesive tape. The tray also keeps metal objects away from the pickup unit. The focus and tracking coils inside need permanent magnets, making the thing magnetic.
The black tape next to the spring keeps outside light away from the photodiode array.
I’m biology class student. I belong to the molecular biology lab.
Sometimes, I use microscope because i see the bacteria. But most microscope is breakdown. Outside that, Natural sciences building is shabby. So building image is gloomy. We want his(HANSEO　PRESIDENT) care! Please... I hope our building like a your building!
These microscopes have a very long focal range and a thus accept a wide range of objectives. The fine focus limits DoF to about 5mm for stacking.
Purchased on ebay
Just taking a much closer look under our microscope. We did a lot of microsurgery trying to fix the thing.