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Transcript of cellphone microscope
- 1. BUILDING A CELLPHONE MICROSCOPE
2. PRESENTED BY Priyanka Guleria(B120030083) Pushpinder Singh Sidhu(B120030085) Rajat Chandel(B120030087) Rajbir(B120030091) 3. CONTENTS Introduction Overview of benefits and limits System design Construction Cellphone microscopic images Uses Different applications Future work Conclusion References 4. INTRODUCTION Today, an estimated six billion cellphone subscriptionsexist worldwide with about 70% of those in developing countries. Developing countries often suffer from a lack of access to adequate healthcare, which is due to the cost and training associated with high-tech scientic instruments required for medical analysis. Thus, scientists present a low-cost portable microscope that uses a cellphone camera and a simple, secondary lens that is placed on top of the specimen. Cellphone microscopes provide a unique opportunity to make disease diagnosis and healthcare accessible to everyone, even in remote and undeveloped parts of the world. 5. Starting in 2008, mobile computational photography hasreached a tipping point and, largely due to the enabling capabilities of cellphone cameras, various approaches to cellphone microscopy have started to appear. Cellphone microscope enables visualization of samples, followed by capture, organization, and transmission of images critical for diagnosis. 6. OVERVIEW OF BENEFITS AND LIMITATIONS Cost-effective: Only a single lens is required in addition to a cellphone camera.So its cheap. Non-intrusive: setup does not require intrusive modication of the phone. Flexibility: detached camera-lens conguration allows any camera to be used for microscopy. Minimal computation: We do not require extensive postprocessing, as e.g. holographic approaches. Computational illumination: Using a second cellphone display as the background illumination allows enhanced microscopic images to be captured. 7. Network connectivity. Potential to significantly contribute to the technologyavailable for global healthcare, particularly in the developing world and rural areas. 8. SYSTEM DESIGN Our cellphone camera consists of a specimen, an objectivelens, and a cellphone camera. The objective lens is mounted at its focal distance to the specimen and acts as a lens for at samples. The camera is focused at innity. The optical magnication M of the system is independent of the distance between camera and sample; it only depends on the ratio of the focal lengths of camera and objective lens:M = fc/fo 9. Due to our unique conguration, the camera can be freelymoved around the objective lens so as to capture different viewpoints. Our setup is much more legible by detaching the phone camera from the objective lens, thereby allowing any available cellphone to capture microscopic imagery. It does no require any additional optical elements to be mounted on the camera itself. 10. CONSTRUCTION Insert your objective lens in the rubber tube and fix it. Use pieces of electrical tape to hold the lens in place. Create a stand to light and hold a microscope slide. Thestand will enable you to keep the cell phone microscope as still as possible while testing it. Use scissors to make two notches directly across from each other on the side and bottom of the paper tube. To create the light source, strip off 1 cm of the plastic insulator with the wire stripper from both ends of the two lengths of electrical wire. 11. over the lighted specimen on the microscope stand. Insert the flashlight bulb into the base with the battery. Set the paper tube over the bulb so that the wires comethrough the notches. Place the prepared microscope slide specimen on top of the paper tube so that the light is shining through it. 12. Turn on the cell phone microscope by activating the cellphone's camera function and place the iris of the cell phone microscope directly . Place the prepared microscope slide specimen on top of the paper tube so that the light is shining through it. Turn on the cell phone microscope by activating the cell phone's camera function and place the iris of the cell phone microscope directly over the lighted specimen on the microscope stand. 13. CELLPHONE MICROSCOPIC IMAGES captured by scientists in MIT Media Lab 14. PANORAMIC IMAGING. 15. MOBILE MICROSCOPY Healthcare workerClinical expert PatientABLHospital 16. WHY WE USED THE CONVEX LENS The convex lenses can be used in magnifying glasses. They are thicker in the centre than in the edges. Convex mirrors are used as streetlight reflectors as theyspread light over greater area. The focal length is positive, and is the distance at which a beam of light will be focused to a single spot. 17. USES AND APPLICATIONS Used to examine blood samples in the field and help spot some of the world's deadliest diseases. And uses the built-in camera to process the images, allowing doctors to quickly screen for diseases including TB and sickle-cell. Doctors can perform complex high-resolution light microscopy on a blood or sputum sample placed on a slide. Used to see the more magnified images of the substance. The microscope helps reveal intestinal worms in schoolchildren. 18. Scientists, engineers, and researchers use microscopes toget more information about the specimens they study. Investigate the silt deposits in different regions of a stream using your cell phone microscope. To measure the dimensions of small objects . Preparation of own microscope specimen slides. 19. FUTURE WORK Research is going on for making it useful for learning aboutthe more sophisticated illuminations in future. Planning for the diagnosis of other urine and blood diseases and classifying them , using cell microscopy. Looking at other medical gadgets and trying to make them entirely digital , like this cellphone microscopy technique. 20. CONCLUSION Cellphones are widely available, especially in developingparts of the world. These devices can be converted into scientic instruments for microscopic imaging. Equipped with wireless network connections, cellphones also allow the transmission of recorded data for remote analysis or statistical inference. It has the potential to make disease diagnosis and screening accessible in parts of the world that have no adequate access to healthcare. 21. REFERENCES http://www.wired.com/wiredscience/2011/03/diy-cellphone microscope/ allafrica.com/stories/201304190125.html www.scidev.net Home New Technologies News cellscope.berkeley.edu/ www.technologyreview.com www.smartplanet.com/blog/pure-genius/new-in-telemedicine-thecell-phone-microscope/4141 www.youtube.com/watch?v=5qcJySNLs84 firstname.lastname@example.org.