Practical Optical System Layout: And Use of Stock Lenses

Practical Optical System Layout: And Use of Stock

Publisher's Note: Products purchased from Third Party sellers are not guaranteed by the publisher for quality, authenticity, or access to any online entitlements included with the product.A complete optical systems design course for general optical engineers! The "first cut" design of an optical system -- anything from a telescope to a complicated VR helmet -- is usually not done by a specialist but by a more general optical engineer. This book details the basic design principles and techniques for doing so in a clear, concise, "low-math" way that such generalists will readily understand -- and appreciate. Practical, step-by-step coverage includes succinct equations, simple diagrams, and clear explanations. The chapter on selecting stock lens (to test a concept or to prove out a possible finished device) should be especially useful.

  • Color: Other
  • ASIN: 0070592543

Ajazz AK33 Geek RGB Mechanical Keyboard, 82 Keys Layout, Black Switches, LED Backlit, Aluminum Portable Wired Gaming Keyboard, Pluggable Cable, for Games Work and Daily Use, Black

Ajazz AK33 Geek RGB Mechanical Keyboard, 82 Keys

1. 82 Keys Layout Unique layout design, on the premise of ensuring complete functionality, to minimize the size. Plus pluggable USB cable, it is convenient to carry. 2. RGB Backlight Colorful RGB lighting zones from a spectrum of over 16.8 million colors, bring more splendor to your life and work. 3. Default 18 Backlit Modes Support custom mode. Give you the most fantastic and free style backlight experience. FN+F8: 18 backlit modes. FN+ ↑/ ↓: 5 brightness levels. FN+ ←: Direction. FN+ ↑: Colors. FN+ -/+: 5 light breathing speed. 4. Ergonomic Keys Design Double-shot Injection molded keycaps, offering the best touch feeling, clear bright backlight and lettering on the keycaps won't be scraped off. Adopting R5 ergonomic key designs in various key shape, which is different from traditional keyboards, you can click the ESC F Keys more quickly. Widened ESC, DEL and direction keys and strengthened space key allow quick strike & easy control & reduced fatigue. 5. Black Switches Special Modified Black Switches, reduce 20g trigger pressure for the fastest response, life span up to 60 million. Give you the ultimate game experience. 6. Professional Sorftware 82 keys N-key rollover. Dedicated software, supports macro editing, each key color choosing, and USB report rate 125/25...

  • Color: RGB Backlit Black Switch
  • ASIN: B01JG37496
  • UPC: 630420952100

Wordscapes In Bloom

Wordscapes In

  • Brand: PeopleFun, Inc.
  • ASIN: B079NKR45N

Understanding Desktop Publishing: How to Use Your Apple Mcintosh to Produce High Quality Newsletters, Brochures, and Ad Layouts for Pennies

Understanding Desktop Publishing: How to Use Your Apple

  • ASIN: B0049IEKTQ
  • UPC: 061672037138

Qt Designer Widget Layout

Qt Designer Widget


Keurig K-Mini Plus Single Serve K-Cup Pod Coffee Maker, with 6 to 12oz Brew Size, Stores up to 9 K-Cup Pods, Travel Mug Friendly, Matte Black

Keurig K-Mini Plus Single Serve K-Cup Pod Coffee

The Keurig k-mini plus single serve Coffee maker features a new sleek design, and at less than 5” wide is the perfect size for any space or occasion. The k-mini plus brewer is effortlessly simple to use - just add fresh water to the removable reservoir, pop in your favorite K-Cup Pod, press the brew button and enjoy fresh brewed, delicious Coffee in minutes. Choose from hundreds of delicious K-Cup Pod varieties to enjoy 6-12oz of your favorite Coffee, tea, cocoa, and iced beverages. And for those who like a bolder brew, select the strong button to increase the strength and bold taste of your Coffee. With a single cup removable reservoir, a pod storage unit to store 9 of your favorite K-Cup pods, and cord storage, The k-mini plus Coffee maker is the portable brewer that makes anywhere Perfect for great Coffee. FAST & FRESH BREWED: Coffee made in minutes. CORD STORAGE: For easy transport and tidy counter tops.TRAVEL MUG FRIENDLY: Removable drip tray accommodates travel mugs up to 7.0" tall and holds a full accidental brew for easy cleanup.ENERGY EFFICIENT: Auto off feature turns off your coffee maker 90 seconds after the last brew, helping to save energy.COMPATIBLE WITH THE MY K-CUP UNIVERSAL REUSABLE COFFEE FILTER: Brew your own ground coffee (sold separately).

  • Color: Matte Black
  • Brand: Keurig
  • ASIN: B07DR89BR6
  • UPC: 611247373088

Rosemary Gladstar's Medicinal Herbs: A Beginner's Guide: 33 Healing Herbs to Know, Grow, and Use

Rosemary Gladstar's Medicinal Herbs: A Beginner's Guide: 33

Craft a soothing aloe lotion after an encounter with poison ivy, make a dandelion-burdock tincture to fix sluggish digestion, and brew up some lavender-lemon balm tea to ease a stressful day. In this introductory guide, Rosemary Gladstar shows you how easy it can be to make your own herbal remedies for life’s common ailments. Gladstar profiles 33 common healing plants and includes advice on growing, harvesting, preparing, and using herbs in healing tinctures, oils, and creams. Stock your medicine cabinet full of all-natural, low-cost herbal preparations.

  • Brand: Storey Publishing, LLC
  • ASIN: 1612120059

5.11 Men's STRYKE Tactical Cargo Pant with Flex-Tac, Style 74369, Battle Brown, 32W x 30L

5.11 Men's STRYKE Tactical Cargo Pant with Flex-Tac,

5.11's most popular pants, 5.11 Stryke Pants are what all other tactical pants want to be. Made from our patented two-way mechanical stretch fabric, with a fully gusseted crotch, self-adjusting tunnel waistband, and articulated knees, 5.11 Stryke Pants offer the superior range of motion necessary for active work. Built to last and blend in, these pants feature 12 smart pockets, including double-deep reinforced cargo pockets and front pockets sized for your everyday tactical carry items. On and off the job, meet your new favorite pants.

  • Color: Battle Brown
  • Brand: 5.11
  • ASIN: B00C89HQFI
  • UPC: 844802281058

Travelambo Womens Walllet RFID Blocking Bifold Multi Card Case Wallet with Zipper Pocket (Chelsea Green Coal)

Travelambo Womens Walllet RFID Blocking Bifold Multi Card

MATERIAL: high quality genuine leather: soft and durable; SIZE: 7.5" X 4" X 1"; PRACTIAL DESIGN; 18 card slots;1 ID slot; 15 card slots, 2 zipped long slots for cash and mobile; RFID BLOCKING: the RFID signal of your credit/debit cards and ID cards (13.56MHz) will be blocked from digital thieves; GUARANTEED QUALITY with hassle free return or exchange;

  • Color: Chelsea Green Coal
  • Brand: Travelambo
  • ASIN: B0791DFCTG

Cricut Ultimate Fine Point Pen Set, 30 Pack

Cricut Ultimate Fine Point Pen Set, 30

Express yourself with every color in the rainbow with the Circuit Ultimate Pen Set! Have beautiful color choices to create rich, nuanced crafts to fit every occasion, mood, and style. There are 30 fine-point pens for beautiful writing and drawing with your Circuit Explore machine. Personalize cards or invites with a handwritten font in a perfect hue; draw gorgeous, elaborate coloring pages for both adults and children; and add phrases to framed art or scrapbook pages. You can even cut and write or draw all in one step. It's easy to custom-color your life! (Circuit Explore One„ machine requires an adaptor and additional steps. )

  • Color: Ultimate Set
  • Brand: Cricut
  • ASIN: B071NQHS6Z
  • UPC: 093573683558

Logitech MK550 Wireless Wave Keyboard and Mouse Combo — Includes Keyboard and Mouse, Long Battery Life, Ergonomic Wave Design

Logitech MK550 Wireless Wave Keyboard and Mouse Combo

The Logitech MK550 Wireless Wave Keyboard and Mouse uses an ergonomic wave design for more natural typing when working. The Logitech Constant Curve layout is similar to regular keyboards but eases the stress on your wrists and allows for more comfortable working. There are also 18 programmable keys that allow for rapid navigation to applications you use frequently. The integrated palm rest and adjustable keyboard height help reduce wrist fatigue and make it easier to type for longer periods of time without strain. Say goodbye to your micro-mouse or touchpad. The MK550 includes a precision-laser mouse for faster navigation and detailed work. The Logitech MK550 Wireless Wave Keyboard and Mouse Combo will have you working for longer with ease. The keyboard has a 3-year battery life, and the mouse has a 2-year battery life. Setup is simple—just plug in the Logitech Unifying receiver and you’re ready to go. Your keystrokes are safe with built-in 128-bit AES-grade encryption. Keystroke dropouts and keyboard lag are a thing of the past with the built-in 2.4GHz wireless signal.System Requirements : Windows XP, Windows Vista, Windows 7, Windows 8, Windows 10,USB port, Internet connection (for software download) System Requirements: Windows XP Windows Vista Windows 7 Windows 8 Windows...

  • Color: Black
  • Brand: Logitech
  • UPC: 085783540981

50 States USA Photo Map

50 States USA Photo

★ 50 STATES PHOTO MAP ★ Add your own photos to each of the 50 US states to capture a lifetime of memories and create a one-of-a-kind map showing where you've been or where you're going. This USA photo map makes a great gift for anyone with the goal of visiting all 50 states. If you're looking for an added challenge find something to do in each state such as: Visit the highest point, run a marathon, drink a beer brewed in that state, visit the capital, take a picture at the state line, or invent your own! ★ MAP MAKER ★ Getting your photos just the right size for a Photo Map can be difficult, which is why we created a free online Map Maker tool at to create pictures for your map. Size and position your photos on the site, then follow the instructions to download the files. You can print the images yourself or send them off to your favorite photo printing service. ★ MORE INFO ★ ▷ Available with or without a frame. The 36" x 24" mats fit in most standard frames. ▷ The outer border mat comes in a variety of colors. See the color choices images for a full list. ▷ The background mat has a beautiful print with the name of each state printed on it. ▷ Photographs shown in some pictures are for demonstration only.

  • Brand: Thunder Bunny Labs

Imagination Station


  • ASIN: B07FZT6T31

Office Chair Ergonomic Cheap Desk Chair Mesh Computer Chair Lumbar Support Modern Executive Adjustable Stool Rolling Swivel Chair for Back Pain, Black

Office Chair Ergonomic Cheap Desk Chair Mesh Computer

This Black Mesh chair comes with a heavy duty metal base that swivels 360 degrees. It is very comfortable, and is made with a nice breathable back rest. This chair is a stylish chair that will look good Whether used in your home or in your work place. It also has adjustable Height from 19 to 23 inches. This is a very sturdy chair with a weight limit of 250.

  • Color: Black
  • Brand: BestOffice
  • ASIN: B0147WIC7E
  • UPC: 848837005412

Amazon Gift Card - Print - Congrats (Stars)

Amazon Gift Card - Print - Congrats

  • Brand: Amazon

Dimex EasyFlex No-Dig Plastic Landscape Edging Kit, 40-Feet (3000-40C-4)

Dimex EasyFlex No-Dig Plastic Landscape Edging Kit, 40-Feet

Get clean and professional looking edging for lawns, gardens, tree rings, and flower beds in a single afternoon with the EasyFlex No-Dig Landscape Edging Kit. Easy to customize and install, the kit requires no digging and has all the materials you need to create clean and simple paths: a 40-foot black coil made of recycled plastic with a 1.5 inch height, 12 8-inch rust proof nylon spiral spikes, and 1 connector to securely link multiple piece of edging. Whether you're an experienced landscaper or a DIY weekend warrior, EasyFlex No-Dig Edging makes lawn edging easy to keep your garden in shape. Flexible, yet sturdy plastic can be molded into aggressive curves or hold its shape in a straight line, and spiral spikes keep black landscape borders securely in place. Simply trim the edging to the desired length, create your design, and hammer spikes into the tabs - then sit back and enjoy your beautiful landscape design.

  • Brand: Dimex
  • UPC: 751315130400

Micro Mini Original Kick Scooter - Yellow

Micro Mini Original Kick Scooter -

The Micro Mini Kickboard is the highest rated scooter for children aged 2-5. Your child will love "surfing the sidewalk" on their Micro Mini, and you will love the years of fun and exercise it provides. The Mini is one of the best value present you will buy your child. The smooth gliding Micro Mini's 3 wheels, low-to-the-ground deck and safe steering all contribute to stability that makes the Mini perfect for pre-schoolers and kindergartners. What makes the Mini unique and fun is the lean-to-steer design; children steer by using their body weight to lean right and left, intuitively learning to lean into a turn, while developing balance and coordination used in many sports. The Micro Mini has the smoothest, quietest ride available thanks to high quality wheels and a flexible fiberglass reinforced deck, which together absorb bumps in the sidewalk. Safety certified by the CPSC, the Micro Mini is recommended for children up to 44lbs.

  • Color: Yellow
  • Brand: Micro Kickboard

Pearhead First 5 Years Chevron Baby Memory Book with Clean-Touch Baby Safe Ink Pad to Make Baby’s Hand or Footprint Included, Gray

Pearhead First 5 Years Chevron Baby Memory Book

Welcome your adorable new bundle of joy and celebrate all of baby’s moments with Pearhead’s chevron babybook. This modern, chevron style baby book includes 50 fill-in pages providing a great and easy guideline to create a keepsake memory book for generations to enjoy. The chevron pattern on the front adds a cool touch to this baby book. Fill in every detail from the moment you found out you were pregnant to your baby’s first birthday and more! Baby’s memory journal includes areas to place photos of baby, mommy, daddy, and more throughout the first few years of their life. The book is bound in a rich, gray and white cloth adding an adorable touch for your baby’s nursery or any bookshelf. Display baby’s adorable 3"" x 3"" photo on the cover of the journal. This baby book also includes a clean-touch ink pad to display your little one’s tiny print on the cover and inside the journal! Your baby’s skin will never even touch the ink so it’s 100% baby safe! To create an impression, make sure the ink is facing down on the included white card and press your baby's hand or foot onto the clean-touch ink pad. Let dry for 1-2 days. Then you can place the print inside the book cover and pages easily. Three-time use maximum. For newborns only. Ink pads will accommodate hand/fee...

  • Color: 698904351184
  • Brand: Pearhead
  • ASIN: B00TQ84AEE
  • UPC: 698904351184

FotoWorks XL 2019 Version - Photo Editing Software for Windows 10, 7 and 8 - Very easy to use

FotoWorks XL 2019 Version - Photo Editing Software

FotoWorks XL 2019 Photo Editing Software for Windows 10, 7, 8, 8.1, Vista, XP FotoWorks XL 2019 holds for the user all the functions for photo edit we know of successful photo editing software series. FotoWorks XL is a powerful photo editing program or image editor that is intuitive to use, despite a variety of options and tools without training period. The picture editor is aimed at users who want for example, edit photos, enhance photos, rotate, crop, or want to use numerous other effects. Texts, clipart, icons or other images can be included in photos with the image editor. Whether a photo collage to be created or an entire folder reduced images in batch mode, automatically improves or to be converted to black / white, the photo editing software combines image manipulations with advanced features such as preset effects, light reflection effects, sharpener / blur, masks and textures. The photo editing software is completed with a printing studio for photo albums, calendars or posters. New in the picture editor version is: - New stunning preset effects - New light reflection effects - Produce oil painting, airbrush or poster effects - Photographic effects - Insert Watermark with batch processing - Sharper / Blur with batch processing - New clipart, masks and textures The p...

  • Brand: IN MEDIAKG TI
  • ASIN: B01JA1F4FA
  • UPC: 783788135620

Google Pixel XL 128GB Unlocked GSM Phone w/ 12.3MP Camera - Quite Black

Google Pixel XL 128GB Unlocked GSM Phone w/

The power of Google, at your fingertips. Every touch, every interaction, every moment — made easy. Pixel brings you the Google Assistant. Ask it questions. Tell it to do things. It's your own personal Google, always ready to help. Just start with “Ok Google”. With unlimited¹ online storage for your photos and videos, you’ll never have to delete an old memory to make room for a new one. And Pixel keeps everything safe and secure: photos, videos, music, contacts, texts, and more.

  • Color: Quite Black
  • Brand: Google
  • ASIN: B01M01ZZAC
  • UPC: 762042122590

Schlage BE365 CAM 619 Camelot Keypad Deadbolt, Satin Nickel

Schlage BE365 CAM 619 Camelot Keypad Deadbolt, Satin

No more keys to hide, lose, carry or forget. Keypad deadbolts offer keyless access and provide maximum security protection to make your life more convenient. Install and program in minutes with no Wiring required.

  • Color: Satin Nickel
  • Brand: SCHLAGE
  • ASIN: B001AT97YA
  • UPC: 043156894529

Yaufey 30 Pint Dehumidifier for Home Basements Bedroom Garage, 4 Gallons/Day Working Capacity, with 0.47 Gallon Water Tank, Continuous Drain Hose and Wheel Spaces up to 1500 Sq Ft

Yaufey 30 Pint Dehumidifier for Home Basements Bedroom

Specification Color : White Net weight : 23.8 lbs Power source : 115V / 60Hz Power consumption : 260 Bucket capacity : 3.8Pints Dimension: 12.2"(L) x 8.27"(W) x 18.9"(H) Package includes: 1 x Dehumidifier

  • Color: White
  • Brand: yaufey
  • UPC: 704619385892

New York City Ballet: The Complete Workout, Vol. 1 and 2

New York City Ballet: The Complete Workout, Vol.

Double bill of workouts designed to help you develop the strength, grace and poise of a ballet dancer. The exercises will help you to achieve the lean abs, firm buttocks, contoured waist, sculpted legs, slim thighs, strong arms and perfect posture you have always dreamed of.

  • Brand: Universal Music
  • ASIN: B000HRMAR2
  • UPC: 660200314828

Drive Medical Lightweight Steel Transport Wheelchair, Fixed Full Arms, 19" Seat, Silver

Drive Medical Lightweight Steel Transport Wheelchair, Fixed Full

Drive Medical's Steel Transport Wheelchair features a durable steel frame that provides reliable stability while maintaining the maneuverability of a lightweight mobility aid. This transport chair provides cushioned armrests, superior navigation in narrow indoor layouts, and is specially designed for easy operation independently or with assistance. The nylon seat upholstery is simple to clean and the footrests swing away for seamless mounting and dismounting. Upholstery handles allow the chair and backrest to fold flat for transportation and storage.

  • Color: Silver
  • Brand: Drive Medical
  • ASIN: B000TW0CQ6
  • UPC: 822383132815
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