https://www.actinica.com/home daily 1.0 2020-02-28 https://www.actinica.com/home/actinica-book-list monthly 0.5 2020-02-28 https://www.actinica.com/home/inside-an-electronic-nose monthly 0.5 2020-02-28 https://static1.squarespace.com/static/5e5045d58a7dbc7441e97509/t/5e52acc91408117e3b7a0850/1582476533162/ Home - Inside an Electronic Nose Click on the photo for a larger image. https://www.actinica.com/home/us-energy-use-graph monthly 0.5 2020-02-28 https://static1.squarespace.com/static/5e5045d58a7dbc7441e97509/t/5e52b3e59fa7880e2a4de331/1582478326799/usenflow02-quads.gif Home - US Energy Use Graph https://www.actinica.com/home/ccd-cameras-eyes-and-physics monthly 0.5 2020-02-28 https://www.actinica.com/home/radiometric-measurements monthly 0.5 2020-02-28 https://www.actinica.com/home/quantization-noise monthly 0.5 2020-02-28 https://www.actinica.com/home/fourier-transform-of-1f-noise monthly 0.5 2020-02-28 https://www.actinica.com/home/testing-optical-aspheres monthly 0.5 2020-02-28 https://www.actinica.com/home/the-mirror-puzzle monthly 0.5 2020-02-28 https://www.actinica.com/home/arduino-motor-control monthly 0.5 2020-02-28 https://static1.squarespace.com/static/5e5045d58a7dbc7441e97509/t/5e557e931afc364e1de0de03/1582661287721/DSC_0266.jpg Home - Arduino Motor Control Ardumoto 'shield' for the Arduino controls our motion stage prototype. It has capacity to control 2 motors. Photo courtesy Bec Conrad. https://www.actinica.com/home/eye-exam-using-a-smart-phone-and-some-plastic-optics-the-netra-project monthly 0.5 2020-02-28 https://static1.squarespace.com/static/5e5045d58a7dbc7441e97509/t/5e55876e0e9890606c06e96c/1582663545596/Pete-w-specs-MediaLab-2010.jpg Home - Eye Exam Using a Smart Phone, And Some Plastic Optics – The NETRA Project Here's the lens kit you'd need without the modern Eye Netra for an eye exam. Please follow the instructions on Pete's t-shirt in the photo. https://www.actinica.com/home/attenuators-connectors-etc monthly 0.5 2020-02-28 https://www.actinica.com/home/precision-resistors-low-tempco monthly 0.5 2020-02-28 https://www.actinica.com/home/custom-front-panels monthly 0.5 2020-02-28 https://static1.squarespace.com/static/5e5045d58a7dbc7441e97509/t/5e52bbd6ab5cfe144806db54/1582480357892/1.png Home - Custom Front Panels https://www.actinica.com/home/nixie-tube-tester monthly 0.5 2020-02-28 https://static1.squarespace.com/static/5e5045d58a7dbc7441e97509/t/5e557d955bdf6a224562ce1f/1582661034699/DSC_0234.jpg Home - Nixie Tube Tester Nixie tube tester by David A. O' Brien https://www.actinica.com/home/energy-harvesting-battery-free-radio monthly 0.5 2020-02-28 https://www.actinica.com/home/in-the-future-robots-will-have-arms monthly 0.5 2020-02-28 https://static1.squarespace.com/static/5e5045d58a7dbc7441e97509/t/5e557fc793e80d2903999e15/1582661597393/DSC_0265.jpg Home - In The Future, Robots Will Have Arms A few prototype motion stages getting outfit with precision encoders. https://www.actinica.com/home/photos-of-recent-work monthly 0.5 2020-02-28 https://static1.squarespace.com/static/5e5045d58a7dbc7441e97509/t/5e5581ee6eb9ca67a2af99ce/1582662139500/LED_illuminator-projector.jpg Home - Photos of Recent Work https://static1.squarespace.com/static/5e5045d58a7dbc7441e97509/t/5e55823993e80d29039a5283/1582662237723/rotary-stage_tests_corneas.jpg Home - Photos of Recent Work Marked in 1 degree increments this rotary stage can allow tests of angular light spread of LEDs. https://www.actinica.com/home/low-noise-nmr-design monthly 0.5 2020-02-28 https://www.actinica.com/home/light-uniformity-testing monthly 0.5 2020-02-28 https://static1.squarespace.com/static/5e5045d58a7dbc7441e97509/t/5e52c361576c4c1eab7c23e8/1582482294298/light-uniformity-graphs-no-logo-300x204.jpg Home - Light Uniformity Testing These graphs were generated by ImageJ from the RAW data files of the Nikon D1x camera. https://static1.squarespace.com/static/5e5045d58a7dbc7441e97509/t/5e52c321cd15995a4ea3a5db/1582482247055/LED_Bench_no_logo-300x205.jpg Home - Light Uniformity Testing Here we test the light uniformity of an LED source using a digital camera and some Thor Labs mounts. https://www.actinica.com/home/prototype-progress-and-the-first-digital-camera monthly 0.5 2020-02-28 https://static1.squarespace.com/static/5e5045d58a7dbc7441e97509/t/5e52d0df576c4c1eab7e72a7/1582485742744/3.png Home - Prototype, Progress, And The First Digital Camera https://www.actinica.com/home/feynman-explains-how-trains-stay-on-track monthly 0.5 2020-02-28 https://www.actinica.com/home/lens-testing-our-precision-mtf-test-jig monthly 0.5 2020-02-28 https://static1.squarespace.com/static/5e5045d58a7dbc7441e97509/t/5e544540edf2bb4b6df0ab6d/1582581068319/Exploded-Drawing-Flexure-Stage.jpg Home - Lens Testing – Our Precision MTF Test Jig Exploded drawing showing the internals of the flexure stage. https://static1.squarespace.com/static/5e5045d58a7dbc7441e97509/t/5e5443c17d790d1a3a253055/1582580688581/MTF-annotated-photo.jpg Home - Lens Testing – Our Precision MTF Test Jig We recently built this rig to test the MTF of cinema and medium format lenses https://www.actinica.com/home/cornea-glare-test-instrument-for-meei monthly 0.5 2020-02-28 https://static1.squarespace.com/static/5e5045d58a7dbc7441e97509/t/5e558be32066c00f6f31cc9b/1582664680197/Drawing1.jpg Home - Cornea Glare Test Instrument For MEEI https://www.actinica.com/home/frequency-compensated-attenuator-tests-amplifiers monthly 0.5 2020-02-28 https://static1.squarespace.com/static/5e5045d58a7dbc7441e97509/t/5e5440927d790d1a3a2451cd/1582579868673/Build-your-own-wide-bandwidth-compensated-attenuator.jpg Home - Frequency Compensated Attenuator Tests Amplifiers Build your own wide bandwidth frequency compensated attenuator to test amplifiers. https://www.actinica.com/home/plausible-feasible-tangible monthly 0.5 2020-02-28 https://www.actinica.com/home/led-current-source-based-on-lt3080-the-modern-lm317-replacement-part-runs-off-usb-or-9v-or-any-voltage-in-between monthly 0.5 2020-02-28 https://static1.squarespace.com/static/5e5045d58a7dbc7441e97509/t/5e55897cdf34243c4af5b952/1582664065422/LED-source-inside.jpg Home - LED Current Source Based on LT3080, The Modern LM317 Replacement Part, Runs Off USB or 9V or Any Voltage in Between There's no need for a heatsink since the regulator does not dissipate much power. https://static1.squarespace.com/static/5e5045d58a7dbc7441e97509/t/5e558a3f9c34ba6cd1f3a164/1582664263107/LED-source-in-package.jpg Home - LED Current Source Based on LT3080, The Modern LM317 Replacement Part, Runs Off USB or 9V or Any Voltage in Between This shows the simple package for the LED current source, ready for use in testing the spectra or providing a constant light source on our optical bench. https://www.actinica.com/home/low-noise-low-drift-techniques monthly 0.5 2020-02-28 https://www.actinica.com/home/weight-gain-at-nist monthly 0.5 2020-02-28 https://static1.squarespace.com/static/5e5045d58a7dbc7441e97509/t/5e543b8a7bcf434aa9cad49f/1582578591572/Clock_accurcy.jpg Home - Weight gain at NIST This shows the improvement in clock accuracy at NIST from 1950 to 2000. https://static1.squarespace.com/static/5e5045d58a7dbc7441e97509/t/5e543c8ddcec210ff784b735/1582578842169/Kilogram-gain.jpg Home - Weight gain at NIST Weight change of the standard kilogram and its copies over 100 years. https://www.actinica.com/home/high-voltage-testing-of-208vac-phase-controller-used-on-semiconductor-production-equipment monthly 0.5 2020-02-28 https://static1.squarespace.com/static/5e5045d58a7dbc7441e97509/t/5e5583b5cdfd3a2005630229/1582662593494/208VAC_phase-controller_testing1.jpg Home - High Voltage Testing of 208VAC Phase Controller Used On Semiconductor Production Equipment Phase controller power supply under test on our bench. The light bulbs provide a test load, the toroid allows us to use 110VAC to supply the test unit with 208VAC. https://www.actinica.com/home/infrared-co2-measurement monthly 0.5 2020-02-28 https://static1.squarespace.com/static/5e5045d58a7dbc7441e97509/t/5e558dc36c2fb67a0ee2d285/1582665167056/download+%283%29.png Home - Infrared CO2 Measurement https://static1.squarespace.com/static/5e5045d58a7dbc7441e97509/t/5e558d9e2066c00f6f323b8d/1582665124911/download+%281%29.png Home - Infrared CO2 Measurement https://static1.squarespace.com/static/5e5045d58a7dbc7441e97509/t/5e558dd93d9b960eaed7d78c/1582665181340/download+%284%29.png Home - Infrared CO2 Measurement https://static1.squarespace.com/static/5e5045d58a7dbc7441e97509/t/5e558d8ad733aa58091e5b3c/1582665105523/download.png Home - Infrared CO2 Measurement https://static1.squarespace.com/static/5e5045d58a7dbc7441e97509/t/5e558db1cdfd3a200565a5ce/1582665144396/download+%282%29.png Home - Infrared CO2 Measurement https://www.actinica.com/home/silicon-photodetector-units monthly 0.5 2020-02-28 https://www.actinica.com/home/image-analysis-with-free-imagej-software monthly 0.5 2020-02-28 https://www.actinica.com/home/photos-of-mechanical-front-panel-design monthly 0.5 2020-02-28 https://static1.squarespace.com/static/5e5045d58a7dbc7441e97509/t/5e52cb48292ccf78e84a178d/1582484302617/diff-amp-1-300x225.jpg Home - Photos of Mechanical, Front Panel Design Cardboard pcb mock-up, with the real board and assembly behind it - we like to make quick mock ups as we design, just to check everything is going well https://static1.squarespace.com/static/5e5045d58a7dbc7441e97509/t/5e52cade9fa7880e2a51b0ef/1582484197597/diff-amp5-300x225.jpg Home - Photos of Mechanical, Front Panel Design Close up of the BNC connectors https://static1.squarespace.com/static/5e5045d58a7dbc7441e97509/t/5e52caae2bf5dc55cc1ff7f9/1582484148804/diff-amp-2-300x225.jpg Home - Photos of Mechanical, Front Panel Design Overall view of assembly, showing how it slides into the case https://static1.squarespace.com/static/5e5045d58a7dbc7441e97509/t/5e52cb81ab5cfe14480966a9/1582484363083/diff-amp-panel-nut-300x225.jpg Home - Photos of Mechanical, Front Panel Design Detail of the plexi layer used to 'bury' the nut needed to hold the front panel control. The plexi is an additional part, but the incompatible heights of the controls meant there had to be some way to accomodate all these part variations. https://static1.squarespace.com/static/5e5045d58a7dbc7441e97509/t/5e52cb0aaf3a3e1585bb280f/1582484241436/diff-amp4-300x225.jpg Home - Photos of Mechanical, Front Panel Design BNC aignment of pcb, fron panel, and mounting BNC panel https://www.actinica.com/home/client-action-photo monthly 0.5 2020-02-28 https://static1.squarespace.com/static/5e5045d58a7dbc7441e97509/t/5e5582f659a6300d9db5e122/1582662398457/PerplexedClients.jpg Home - Client Action Photo Perplexed clients puzzled over pixel positioning problems. https://www.actinica.com/home/blue-leds-make-healthy-babies-firefly-phototherapy-from-design-that-matters monthly 0.5 2020-02-28 https://static1.squarespace.com/static/5e5045d58a7dbc7441e97509/t/5e558884cdfd3a2005643a06/1582663818933/FireFly_DtM.jpg Home - Blue LEDs Make Healthy Babies – Firefly Phototherapy From Design That Matters Project Firefly: Infant Phototherapy. Best use of blue LEDs we can think of. https://www.actinica.com/home/vision-response-vs-plancks-black-body-curve monthly 0.5 2020-02-28 https://www.actinica.com/home/coffee-source monthly 0.5 2020-02-28 https://www.actinica.com/home/radiometry-explained-by-nist monthly 0.5 2020-02-28 https://www.actinica.com/home/low-noise-x1000-amplifier monthly 0.5 2020-02-28 https://static1.squarespace.com/static/5e5045d58a7dbc7441e97509/t/5e544251ab3ef425af8588e5/1582580320308/Low-Noise-Amp-Inside-300x195.jpg Home - Low Noise x1000 Amplifier A view inside the prototype x1000 low noise amp. Click on image to enlarge it. https://static1.squarespace.com/static/5e5045d58a7dbc7441e97509/t/5e5441d6edf2bb4b6defc2d4/1582580193916/Low-Noise-Amp-1-300x195.jpg Home - Low Noise x1000 Amplifier Here's the amp on the bench, next to a 9V battery. Click on image to enlarge it. https://www.actinica.com/home/spie-photonics-west-2010 monthly 0.5 2020-02-28 https://www.actinica.com/home/microscope-objectives-na-cost-and-parabolas monthly 0.5 2020-02-28 https://static1.squarespace.com/static/5e5045d58a7dbc7441e97509/t/5e52cde4ab5cfe144809cdc0/1582484971200/2.png Home - Microscope Objectives – NA, Cost, And Parabolas https://www.actinica.com/home/category/Tufte monthly 0.5 https://www.actinica.com/home/category/Prototype monthly 0.5 https://www.actinica.com/home/category/Asphere monthly 0.5 https://www.actinica.com/home/category/Methodology monthly 0.5 https://www.actinica.com/home/category/Tech+notes monthly 0.5 https://www.actinica.com/home/category/Optics monthly 0.5 https://www.actinica.com/home/category/Photo monthly 0.5 https://www.actinica.com/home/category/Math monthly 0.5 https://www.actinica.com/home/category/Energy+harvesting monthly 0.5 https://www.actinica.com/home/category/Teaching monthly 0.5 https://www.actinica.com/home/category/Bio+tech monthly 0.5 https://www.actinica.com/home/category/Energy monthly 0.5 https://www.actinica.com/home/category/Research+papers monthly 0.5 https://www.actinica.com/home/category/Parts monthly 0.5 https://www.actinica.com/home/category/How-to monthly 0.5 https://www.actinica.com/home/category/Books monthly 0.5 https://www.actinica.com/home/category/Technical+articles monthly 0.5 https://www.actinica.com/home/category/Testing monthly 0.5 https://www.actinica.com/home/category/SPIE monthly 0.5 https://www.actinica.com/home/category/Vendors monthly 0.5 https://www.actinica.com/home/category/Interferometer monthly 0.5 https://www.actinica.com/home/category/Portfolio monthly 0.5 https://www.actinica.com/home/category/Electronic+nose monthly 0.5 https://www.actinica.com/home/category/Tools monthly 0.5 https://www.actinica.com/home/category/Optical+bench monthly 0.5 https://www.actinica.com/home/category/Application+notes monthly 0.5 https://www.actinica.com/home/category/Books+we+like monthly 0.5 https://www.actinica.com/home/category/Electronic+noise monthly 0.5 https://www.actinica.com/home/category/Graph monthly 0.5 https://www.actinica.com/home/category/Precision monthly 0.5 https://www.actinica.com/home/category/Video monthly 0.5 https://www.actinica.com/home/category/Metrology monthly 0.5 https://www.actinica.com/home/category/Low+noise monthly 0.5 https://www.actinica.com/home/category/NIST monthly 0.5 https://www.actinica.com/home/category/Class monthly 0.5 https://www.actinica.com/home/category/Short+course monthly 0.5 https://www.actinica.com/home/category/Low+noise+design monthly 0.5 https://www.actinica.com/home/tag/Tufte monthly 0.5 https://www.actinica.com/home/tag/short+course monthly 0.5 https://www.actinica.com/home/tag/testing monthly 0.5 https://www.actinica.com/home/tag/precision monthly 0.5 https://www.actinica.com/home/tag/photo monthly 0.5 https://www.actinica.com/home/tag/teaching monthly 0.5 https://www.actinica.com/home/tag/electronic+nose monthly 0.5 https://www.actinica.com/home/tag/low+noise monthly 0.5 https://www.actinica.com/home/tag/metrology monthly 0.5 https://www.actinica.com/home/tag/optical+bench monthly 0.5 https://www.actinica.com/home/tag/bio+tech monthly 0.5 https://www.actinica.com/home/tag/tech+note monthly 0.5 https://www.actinica.com/home/tag/graph monthly 0.5 https://www.actinica.com/home/tag/books monthly 0.5 https://www.actinica.com/home/tag/portfolio monthly 0.5 https://www.actinica.com/home/tag/parts monthly 0.5 https://www.actinica.com/home/tag/noise+1%2Ff+Fourier+transform+DSP monthly 0.5 https://www.actinica.com/home/tag/asphere monthly 0.5 https://www.actinica.com/home/tag/interferometer monthly 0.5 https://www.actinica.com/home/tag/class monthly 0.5 https://www.actinica.com/home/tag/vendors monthly 0.5 https://www.actinica.com/home/tag/energy monthly 0.5 https://www.actinica.com/home/tag/SPIE monthly 0.5 https://www.actinica.com/contact daily 0.75 2020-02-26 https://www.actinica.com/the-actinica-way daily 0.75 2020-02-26 https://static1.squarespace.com/static/5e5045d58a7dbc7441e97509/t/5e56c0c1672e827238352ff8/1582743753377/IR-test-with-scope.jpeg The Actinica Way - What we do, in a nutshell: Ready to help leverage your skills Understand, Measure, Innovate, and Solve Proof of concept hardware, optics, ME, EE Algorithms and methods, improvements Design, prototype, early stage of a project We’re here to help YOU get it RIGHT, early and often https://www.actinica.com/our-methodology daily 0.75 2020-02-26 https://static1.squarespace.com/static/5e5045d58a7dbc7441e97509/t/5e56c20f463d221009497277/1582744942569/cogniscent-setup-1-04-25-06-small-300x225.jpg Our Methodology https://www.actinica.com/case-studies daily 0.75 2020-02-26 https://www.actinica.com/clients daily 0.75 2020-02-26 https://www.actinica.com/resources-extended-team daily 0.75 2020-02-26 https://www.actinica.com/working-with-you daily 0.75 2020-02-26 https://www.actinica.com/led-colorimeter daily 0.75 2020-02-26 https://static1.squarespace.com/static/5e5045d58a7dbc7441e97509/5e56cad089804c44a8f400b4/5e56caf11847ac645d0fd41d/1582746381014/DSC_0255-300x195.jpg LED Colorimeter LED color controlled by Arduino, shown here under test with an arcylic light pipe. https://static1.squarespace.com/static/5e5045d58a7dbc7441e97509/5e56cad089804c44a8f400b4/5e56caffb8195137f6cb97ed/1582746396964/DSC_0258-300x195.jpg LED Colorimeter Looking into the color comparison light box, showing the nearly white, and purple off-white of two LED arrays. https://www.actinica.com/whats-acnitica-mean daily 0.75 2020-02-26 https://www.actinica.com/petes-project-list daily 0.75 2020-02-26 https://www.actinica.com/mikes-project-list daily 0.75 2020-02-26 https://www.actinica.com/services daily 0.75 2020-02-26 https://static1.squarespace.com/static/5e5045d58a7dbc7441e97509/t/5e56ce631dce0870d838b636/1582748939419/Fuzzy-front-end-graph-4-cropped.png Services Graph of product development cost vs. time https://www.actinica.com/about-us daily 0.75 2020-02-27 https://static1.squarespace.com/static/5e5045d58a7dbc7441e97509/t/5e58056815353d7e5319603e/1582826918929/light-uniformity-graphs-no-logo-300x204.jpg About us How 6 tiny LEDs and the wrong diffuser do not create uniform illumination. These graphs were generated by ImageJ from the RAW data files of the Nikon D1x camera. https://static1.squarespace.com/static/5e5045d58a7dbc7441e97509/t/5e580554c108810104501825/1582826929990/LED_Bench_no_logo.jpg About us Testing the light uniformity of an LED source in our optics lab. Machine vision, microscopes, and other applications, work best when the light is uniform. https://www.actinica.com/tech-notes daily 0.75 2020-02-26