Longyun jin’s Post

#ASAP versus Classical #Lens #Design Codes The primary function of a lens design code is to evaluate many combinations of lens parameters—like glass type, thickness, and surface curvatures—to provide an optimum solution, based on user-specified criteria or “merit functions”. This function can be done efficiently, when the rays are constrained to proceed through the system of optical elements sequentially, one surface after another in a prescribed order. The type of analysis performed by lens design programs, while sometimes essential to developing the initial system specification, generally presumes perfect optical surfaces. It neglects Fresnel losses, multiple reflections, scattered light, diffraction, and other non-ideal or more complex behavior. But ASAP can take a basic lens design and fold in these effects, giving a better prediction of the “as-built” performance of the complete opto-mechanical system. #lensdesign #opticsanalysis #fresnel #reflection #scatteredlight #simulation #modeling #optical #opticalsurface #opticalsystem #opticalprogram #innovation

𝗨𝗻𝗶𝘃𝗲𝗿𝘀𝗮𝗹 𝗕𝗮𝘁𝘁𝗲𝗿𝘆 𝗧𝗲𝘀𝘁𝗲𝗿 𝗟𝗶𝗻𝗸 𝘁𝗼 𝗕𝘂𝘆:👉https://lnkd.in/g4G_7vCf ⏩The Universal Battery Tester is a tool designed to test a wide range of batteries, allowing users to check if a battery is still functional or needs to be replaced. It's known for its versatility and can typically test various battery types, including AA, AAA, C, D, 9V, and button cell batteries (such as those used in watches or hearing aids). ⏩Key features of most universal battery testers, including the Universal Battery Tester, generally include: - **𝐂𝐨𝐦𝐩𝐚𝐭𝐢𝐛𝐢𝐥𝐢𝐭𝐲:Able to test multiple types of batteries. **𝐄𝐚𝐬𝐲-𝐭𝐨-𝐫𝐞𝐚𝐝 𝐝𝐢𝐬𝐩𝐥𝐚𝐲:**Often includes an analog or digital display showing the battery's condition (good, weak, or bad). **𝐍𝐨 𝐞𝐱𝐭𝐞𝐫𝐧𝐚𝐥 𝐩𝐨𝐰𝐞𝐫 𝐬𝐨𝐮𝐫𝐜𝐞 𝐧𝐞𝐞𝐝𝐞𝐝:**The tester uses the power from the battery itself to perform the test. - **𝐏𝐨𝐫𝐭𝐚𝐛𝐥𝐞 𝐝𝐞𝐬𝐢𝐠𝐧:**Small and lightweight, making it easy to carry or store. 𝗟𝗶𝗻𝗸 𝘁𝗼 𝗕𝘂𝘆:👉https://lnkd.in/g4G_7vCf

Dive into the World of Precision with Gravitaz TechnoLabs' Ultra Miniature PCB Designs! Unlock unparalleled possibilities with our top-tier ultra miniature PCB designs. Our adept team of engineers specializes in crafting small, intricate PCBs using the latest tools and techniques, ensuring uncompromised quality tailored to your specific requirements. ✨ Advantages of Our Ultra Miniature PCB Designs: ->Small Size: Optimize space utilization within your product, as our PCB designs are meticulously crafted to minimize size without compromising functionality. ->Lightweight: Experience the benefits of reduced overall product weight, contributing to enhanced portability and efficiency. ->High Performance: Our PCBs are engineered for exceptional performance, delivering top-tier functionality even within compact form factors. ->Cost-Effective: Achieve cost efficiency without sacrificing quality. Our PCB designs are crafted to be cost-effective, supporting your product development goals. 🚀 Elevate your product's design with Gravitaz TechnoLabs – Where Precision Meets Innovation! 💡 #Gravitaztech #PCBDesign #MiniatureDesign #InnovationInTech

DAY 8 #100daysamplifierdesign Embarking on the journey of designing a CMOS inverter using a layout tool is akin to crafting a masterpiece of modern technology. Picture this: meticulously sizing transistors, strategically placing them on the grid, and weaving intricate metal layers to form seamless interconnections. But it doesn't stop there. With every click, the tool ensures the precision of design rule checks, meticulously verifies layout versus schematic alignment, and even unravels the complexities of parasitic extraction. And then comes the magic: simulations that breathe life into your creation, validating its functionality and unlocking the door to optimization. It's not just about building circuits; it's about sculpting innovation, one pixel at a time. Welcome to the world of CMOS inverter design—where artistry meets technology in perfect harmony. Pipeloluwa Olayiwola Tiny Tapeout

LG Electronics latest free-form display screen has gained a lot of attention this week. The innovative screen acts like a #fabric; it can be folded, twisted, reshaped and even stretches up to 50%. We see the potential for this technology on many scales from #architecture to #softrobotics and #wearabletech.  But how does it actually work?  It is vaguely described as being made from a special type of elastic, optically clear, silicone as the substrate. With micro-LEDs and a new wiring design structure. This careful composition allows it to be repeatedly stretched over x10,000 times and is resistant to shock and high temperatures. As LG have not revealed exactly how it is made, we took a deeper look at other research going on in the field of #flexibledisplays. We found many novel approaches. Some include #auxetic #metamaterial structures, the use of #lightemittingpolymers. Micro-LEDS placed within 3D / double-layered structures, designed to reveal hidden pixels that appear and disappear at different stretch values, which maintain image quality. Amongst many other techniques and materials. This got us thinking about other exciting material developments that could allow for future stretchable colour and display functionalities > A #3Dprinted material from the Kunming University of Science and Technology can glow green under pressure or friction through a process called #mechanoluminescence. Massachusetts Institute of Technology have created a stretchable colour-changing material which utilises #structuralcolour; different light wavelengths are reflected as the material is strained. Video credits: LG Display Global, CNN, New Scientist, Massachusetts Institute of Technology (MIT), KUST.

REFLECTARRAY ANTENNAS Reflectarray antennas is a class of antennas that utilizes arrays of elementary antennas as reflecting surfaces.Reflectarray antennas are gaining recognition as a high-performance alternative for antenna design,A reflectarray antenna consists of an array of printed microstrip patches on a flat grounded dielectric substrate illuminated by a feedhorn.it is light weighted,flat and low profile antenna with beam scanning capabilities.it combines the best features of parabolic and phased array antennas a reflectarray antenna has the following drawbacks 1.Phase error 2.Low gain and narrow bandwidth The effects of phase error is challenging to control at higher frequencies such as millimeter waves due to shorter wavelength.Fast communication systems such as 5G are proposed to work at the higher frequencies due to their high data rates.High-data rates requires fast switching mechanism which is only possible to attain at short wavelengths with high frequencies. Cc:ResearchGate

Microscope achromatic design. Optically aligning c-light(656nm) and f-lights(486nm) through design.

Different machine vision applications have different needs, so it is crucial to choose the appropriate industrial lens: -Field of view angle: Select the appropriate field of view angle according to the application needs, ensuring coverage of the target area and obtaining the required image information. -Focal length range: The focal length of an industrial lens determines the magnification and field of view of the image, and the appropriate focal length range is selected according to the application requirements. -Focusing ability: Some applications require precise focusing at different distances, so choosing a lens with appropriate focusing ability is crucial. -Shutter speed: For applications with high-speed motion or rapid detection, choosing a lens with a fast shutter speed can ensure the clarity and accuracy of the image. Lansheng Optics provides professional customized production of high-end optical lenses, and has an optical technology team to fully meet your various needs.https://www.lanshengoptics.com/ #optical lenses #lens assembly #Optical design #light source #stage lighting #FA lens #machine vision #entertainment lighting #LED light source module #LASER light module

Digital timing and power closure was a goal in my design of Verilog-AMS, unfortunately Cadence screwed that up by refusing to do SPEF back-annotation. Fortunately, the tools are now available to do it in open-source, so if you sit through this Cadence talk and decide it's something you need, I can probably do it for you cheaper. I'll throw in variability modeling at the same time, which helps with yield calculation. I'd did EM/IR testing at National Semiconductor, the best approach is to just use smarter models for the (wire segment) components that can measure their own stress and decay. You can do that in Verilog-AMS yourselves by running the extracted netlist through a model replacement script, then run it with the usual test-benches. It's to much data to post-process. You'll need a thermal model for your chip/heatsinking, Verilog-AMS works for that too. https://lnkd.in/gykWti3C