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holographic

Holography is a technique that enables a wavefront to be recorded and later re-constructed. Holography is best known as a method of generating three-dimensional images, but it also has a wide range of other applications. In principle, it is possible to make a hologram for any type of wave.
A hologram is made by superimposing a second wavefront (normally called the reference beam) on the wavefront of interest, thereby generating an interference pattern which is recorded on a physical medium. When only the second wavefront illuminates the interference pattern, it is diffracted to recreate the original wavefront. Holograms can also be computer-generated by modelling the two wavefronts and adding them together digitally. The resulting digital image is then printed onto a suitable mask or film and illuminated by a suitable source to reconstruct the wavefront of interest.

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Recent contents
  1. S

    Vortex AMG UH-1 gen 2 combo

      1. For Sale
    • $600
    • Battle ground
    • Washington
    Selling my gen 2 Vortex AMG UH-1 and 3X magnifier as a combo. Ran the gen 1 for a long time and sent it in for a warranty claim. Got sent back these two as an exchange. Mounted and zero'd on my Bcm but decided to go a different route now. These are basically brand new in the boxes.
  2. Y1NGER

    EOTech Holographic Sight • EXPS3-0

      1. For Sale
    • $425
    • Cornelius
    • Oregon
    I'm selling my EOTech EXPS3-0 holographic weapon sight. This optic has only been mounted to one firearm and has less than 150 rounds on it and is in excellent condition. I'm the original owner and I've had it for less than a year. Model: EXPS3-0 This is the black model with a 65 MOA...
  3. B_Cannon

    Vortex AMG UH-1 Gen II

      1. For Sale
    • $425
    • Eugene
    • Oregon
    Vortex AMG UH-1 Gen 2 holographic sight. Pretty much an EoTech but made by vortex, so some pros and cons with that. Great condition. Original box and everything included.
  4. rayrunspdx

    [WTB] EOTECH EXPS3-2

      1. Want to Buy
    • Beaverton
    • Oregon
    Looking to buy an Eotech EXPS3-2 in good condition. Prefer to meet locally.
  5. 5.56mm

    EOTech 512.A65 Holo Sight in great condition

      1. For Sale
    • $325
    • Wilsonville
    • Oregon
    This EOTech 512.A65 holographic sight is in great shape and works perfectly. Comes in the original plastic case with all paperwork, etc. as shown. Front and back glass looks perfect with no scratches. Mostly has just sat in my safe, so it's ready for a new, loving home. 👨‍👩‍👦 I am the...
  6. Tank_Phelan

    Vortex Strikefire II Red Dot

      1. For Sale
    • $100
    • Graham
    • Washington
    Red dot is in excellent shape! Changes between red and green dot. turns on by pressing the up button. turns off by holding down both up and down buttons together until dot disappears. brightness is adjusted by pressing up and down buttons. takes a single CR2 battery. looking for cash offers...
  7. H

    EOTECH HWS XPS3-0 Circle 1-Dot Reticle Brand New In Box Maximum Holographic Performance

      1. For Sale
    • $495
    • Washougal
    • Washington
    Bought this last year, but did not use it. Sadly, the host firearm is gone, so this baby is up for sale. The retail price is $735. No trades at this point-in-time. From eotech.com: The HWS XPS3™ is the shortest and lightest night-vision compatible HWS yet. Powered by a single transverse...

  8. EOTech XPS2 (Need Gone ASAP)

      1. For Sale
    • $325
    • Sandy
    • Oregon
    READ DESCRIPTION I bought this from my buddy almost 2 years ago. He bought it new. It has very minor delamination on the glass (it’s not visible when looking down the optic). The hood has some small scratches and dings from use. I lost the box but DOM is 2016. I need to pay for school so this...
  9. B

    PSA 7in 300 BLK Pistol with Eotech 512

      1. For Sale
    • $800
    • Portland
    • Oregon
    Only ran a few magazines through it. Don’t want to sell but I could use the extra money. Aero Precision lower. My phone almost did a perfect job removing the background from this image.. in case you were wondering about the trigger area
  10. B

    PSA 7in 300 BLK Pistol with Eotech 512

      1. For Sale
    • $800
    • Portland
    • Oregon
    Only ran a few magazines through it. Don’t want to sell but I could use the extra money. Aero Precision lower.
  11. H

    EOTECH HHS II Holographic Hybrid Sight II EXPS2-2 G33 magnifier New In Box

      1. For Sale
    • $695
    • Washougal
    • Washington
    Brand New, In The Box. Was mounted on a rifle briefly, but sold the host gun. Therefore, this cool optic must go to a new home! The retail price is $1169-ish, so save some dough and buy this now! Also, keep in mind, this set is hard to find as it often out-of-stock. No trades please, but all...
  12. Daredevil27

    Eotech XPS2-0 Like New

      1. For Sale
    • $425
    • Bellevue
    • Washington
    $425 shipped. Like new. Only mounted to compare with other optic. Comes with box and all documents. Never seen the range.
  13. M

    [WTS] Great Deals on Like New Optics!

      1. For Sale
    • Portland
    • Oregon
    Hello all, I have 3 optics for sale: - Trijicon MRO Green Dot w/ scalarworks 1/3 mount w/ killflash $500.00 - Trijicon ACOG TA33 3x30 red chevron 62gr 5.56 w/ killflash $850.00 - Eotech XPS 3-2 red $500.00 All come with original box.
  14. S4Lifer

    Eotech - 2021 Model

      1. For Sale
    • $300
    • Happy Valley / Portland
    • Oregon
    Eotech 512 512.A65 2021 build. Recently purchased but decided the Sig Sierra3BDX with a canted red dot was better suited for an 18” barrel build. Just put in fresh batteries. Very minor wear on one edge of the metal guard but everything else is great and works as intended. Looks awesome as...
  15. Paolung

    EOTECH EXPS2-0GRN + Vortex 6x magnifier!

      1. For Sale
    • $800
    • Tigard
    • Oregon
    For sale is an awesome combo you don’t want to pass up - this is the one you want for ultra fast target acquisition and super durability. Vortex comes with 3 height plates so it’s the perfect height for the EOTECH. It also has a cam swing, so there’s no annoying button to push in order to...
  16. Daytona14

    Red Dot for WASR?

    Hey guys, I have a WASR10 AK47 and I'd love to attach a red dot or a holo sight. I am a noob when it comes to doing this, so I'm looking for some help. I was looking at the Trophy TRS-25 Red Dot, I'm just not exactly sure what I'd need to be able to install it on the rifle. Thanks
  17. W

    LNIB Eotech XPS2-0

      1. For Sale
    • $380
    • Seattle
    • Washington
    Eotech XPS2-0. Inspection date of 6/14/2021. Lived it's life on a spare upper so it hasn't seen any rounds. A few light handling marks from the safe but the glass is perfect. $380. Will ship for $10.
  18. R

    EOtech G45. 5x magnifier BNIB. SOLD please remove

      1. For Sale
      2. For Trade
    • $0
    • Puyallup
    • Washington
    I have a Eotech G45. 5x magnifier that’s BNIB $625. 2.five.three-3.two.eight-2.four.six.0. Call or text An innovative holographic tool, EOTech 5-Power Magnifier w/ Side Mount Switch delivers the ability to spot targets in tight-quarters, while also shifting into a long-range surveillance...
  19. Tgrow503

    Eotech exps3-0 HWS

      1. For Sale
    • $575
    • TUALATIN
    • Oregon
    New in box Eotech exps3-0 7/26/2021 Manufacture date Night vision Model Holographic weapon sight Red dot w 65moa circle $575
  20. MachineKiller

    Vortex Razor UH-1

      1. For Sale
    • $300
    • Coos Bay
    • Oregon
    Vortex Razor UH-1 holographic sight, used but good condition. Will come with box and manual. $300 firm, local pickup only. Shipping inquiries will not be answered. Thanks for looking!
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