--- title: Optical Ruler Series | V3 description: Our optical ruler collection features V3 with elements such as prism array, crossed-cylindrical lens, and cylindrical Fresnel lenses. --- [Skip to main content](https://www.fresneltech.com/rulerv3#main-content) [(817) 926-7474](tel:+1-817-926-7474)[  |  ](mailto:info@fresneltech.com)[info@fresneltech.com](mailto:info@fresneltech.com) [![FTI_40-Years-2](https://www.fresneltech.com/hs-fs/hubfs/FTI_40-Years-2.png?width=500&height=111&name=FTI_40-Years-2.png) ![FTI_40-years_scroll](https://www.fresneltech.com/hs-fs/hubfs/FTI_40-years_scroll.png?width=500&height=111&name=FTI_40-years_scroll.png) ![fresneltech-logo](https://www.fresneltech.com/hs-fs/hubfs/Template%20Images/fresneltech-logo.png?width=350&height=73&name=fresneltech-logo.png) ![fresneltech-logo](https://www.fresneltech.com/hs-fs/hubfs/Template%20Images/fresneltech-logo.png?width=350&height=73&name=fresneltech-logo.png) ](https://www.fresneltech.com?hsLang=en) - Show submenu for Products Products - [Products ](https://www.fresneltech.com/products) - [Fresnel Lenses](https://www.fresneltech.com/fresnel-lenses) - [Polymer Aspheres ](https://www.fresneltech.com/polymer-aspheres) - [PIR Arrays](https://www.fresneltech.com/pir-arrays) - [Freeform Optics](https://www.fresneltech.com/freeform) - [Silicone Optics](https://www.fresneltech.com/silicone-optics) - [Diffusers](https://www.fresneltech.com/diffusers) - Show submenu for Capabilities Capabilities - [Capabilities ](https://www.fresneltech.com/capabilities) - [Diamond Machining](https://www.fresneltech.com/diamond-machining) - [Optical Tooling & Molding](https://www.fresneltech.com/optical-tooling-molding) - [Metrology](https://www.fresneltech.com/metrology) - [Motion Detection](https://www.fresneltech.com/motion-detection) - Show submenu for Resources Resources - [Resources ](https://www.fresneltech.com/resources) - [Materials](https://www.fresneltech.com/materials) - [Rulers](https://www.fresneltech.com/ruler) - [FAQs](https://www.fresneltech.com/faqs) - [Articles](https://www.fresneltech.com/articles) - Show submenu for About Us About Us - [About Us ](https://www.fresneltech.com/about-fresnel-technologies-inc) - [Careers](https://www.fresneltech.com/careers-at-fresnel) - [FAQs](https://www.fresneltech.com/faqs) Open main navigation Close main navigation - Show submenu for Products Products - Products - [Products ](https://www.fresneltech.com/products) - [Fresnel Lenses](https://www.fresneltech.com/fresnel-lenses) - [Polymer Aspheres ](https://www.fresneltech.com/polymer-aspheres) - [PIR Arrays](https://www.fresneltech.com/pir-arrays) - [Freeform Optics](https://www.fresneltech.com/freeform) - [Silicone Optics](https://www.fresneltech.com/silicone-optics) - [Diffusers](https://www.fresneltech.com/diffusers) - Show submenu for Capabilities Capabilities - Capabilities - [Capabilities ](https://www.fresneltech.com/capabilities) - [Diamond Machining](https://www.fresneltech.com/diamond-machining) - [Optical Tooling & Molding](https://www.fresneltech.com/optical-tooling-molding) - [Metrology](https://www.fresneltech.com/metrology) - [Motion Detection](https://www.fresneltech.com/motion-detection) - Show submenu for Resources Resources - Resources - [Resources ](https://www.fresneltech.com/resources) - [Materials](https://www.fresneltech.com/materials) - [Rulers](https://www.fresneltech.com/ruler) - [FAQs](https://www.fresneltech.com/faqs) - [Articles](https://www.fresneltech.com/articles) - Show submenu for About Us About Us - About Us - [About Us ](https://www.fresneltech.com/about-fresnel-technologies-inc) - [Careers](https://www.fresneltech.com/careers-at-fresnel) - [FAQs](https://www.fresneltech.com/faqs) - [Contact Us](https://www.fresneltech.com/contact-us) [Contact Us](https://www.fresneltech.com/contact-us?hsLang=en) # Ruler V3 The images show more details of the various optics Ruler V3 includes. Learn more about the featured optics of this ruler below. [See All Rulers](https://www.fresneltech.com/ruler?hsLang=en) ![IMG_5928 - main ruler 3 image_edit](https://www.fresneltech.com/hs-fs/hubfs/Rulers/Ruler%203/IMG_5928%20-%20main%20ruler%203%20image_edit.jpg?width=470&height=200&name=IMG_5928%20-%20main%20ruler%203%20image_edit.jpg) ![DSCN0736 - grating prism_edit](https://www.fresneltech.com/hs-fs/hubfs/Rulers/Ruler%203/DSCN0736%20-%20grating%20prism_edit.jpg?width=470&height=300&name=DSCN0736%20-%20grating%20prism_edit.jpg) ![IMG_5937 - pyramidal_edit](https://www.fresneltech.com/hs-fs/hubfs/Rulers/Ruler%203/IMG_5937%20-%20pyramidal_edit.jpg?width=470&height=350&name=IMG_5937%20-%20pyramidal_edit.jpg) ![IMG_5968 - cylindrical-round Fresnels_edit](https://www.fresneltech.com/hs-fs/hubfs/Rulers/Ruler%203/IMG_5968%20-%20cylindrical-round%20Fresnels_edit.jpg?width=470&height=350&name=IMG_5968%20-%20cylindrical-round%20Fresnels_edit.jpg) #### Featured Optic 1: Grating 532nm-Prism Array- 650nm **532nm grating period: 37.2μm ****Prism array period: 1.0mm; 650nm grating period: 30.5μm Blaze angle and apex angle: 2°** The grating - prism array - grating optic demonstrates some of the similarities and differences between diffraction (from the gratings) and refraction (from the prism array). The prism array refracts light perpendicularly incident on the back of the ruler by ~1°, more or less independently of wavelength, and refracts all the light into one spot. By contrast, each wavelength-specific grating diffracts most of the light at the design wavelength perpendicularly incident on the back of the ruler into the first diffraction order at 1°, but does not work in quite the same way with a different wavelength. The grooves of the prism array are much wider and much deeper than those of the blazed gratings. #### Featured Optic 2: Crossed-Cylindrical Lens This light-shaping lens requires sharp corners to shape an incident collimated beam into a precise square or rectangular output. #### Featured Optic 3: f/1 Cylindrical Fresnel Lens **18 mm diameter and focal length** #### Featured Optic 4: f/1 (Round) Fresnel Lens **18 mm diameter and focal length** Use a flashlight or other large-ish partially collimated beam to investigate the different behavior of cylindrical vs round Fresnel lenses. Note the linear output of the Cylindrical Fresnel lens and the spot resultant from use of a round Fresnel lens. ## Collect Them All Complete the form to receive Ruler V3 or the whole set by mail!  # Scale as you grow A compact way to list the offering and prices of your product. Monthly Annual Starter ### $20/mo$200/y - Unlimited Updates - Built for Hubspot - 10 Projects [Get Started](https://www.fresneltech.com/rulerv3#) Growth ### $80/mo$900/y - Unlimited Projects - Branding - Analytics - Email Support - Upgrade Discount - Custom Interface [Get Started](https://www.fresneltech.com/rulerv3#) Recommended Scale ### $50/mo$550/y - Unlimited Updates - Built for Hubspot - 10 Projects - Email Support - Analytics [Get Started](https://www.fresneltech.com/rulerv3#) # Frequently Asked Questions ##### What is Inbound Marketing? Quickly and efficiently build the materials you need to support your inbound marketing strategy. Drag and drop building blocks including testimonials, forms, calls-to-action, and more. ##### What is Sprocket Rocket? Sprocket Rocket lets you transform your rapid prototype into a beautiful design by adjusting every aspect to fit brand standards. ##### What is GDD? Collaborate seamlessly across devices from wherever you may be – whether you’re in the office, on the go, or making last-minute changes before your next meeting. ## The easiest and fastest way to build on HubSpot The template is really nice and offers quite a large set of options. It's beautiful and the coding is done quickly and seamlessly. Thank you! ##### Jovani Tate ###### INTERACTION DESIGNER It was easy to put together pages and when I was done, I could just click and have the page automatically created in HubSpot. ##### Kaila Terrell ###### GRAPHIC DESIGNER We built our old site using a template, and it left a lot to be desired. With SprocketRocket, we can go page by page and get the exact flow of content we need. ##### Hugh Branch ###### INBOUND WRITER [Get Sprocket Rocket](https://www.fresneltech.com/rulerv3#) #### Fresnel Technologies Fresnel Technologies, Inc. specializes in the design and manufacturing of molded plastic Fresnel lenses, molded polymer optics in general, and infrared-transmitting optical materials. We offer design assistance, diamond machining, prototyping, tooling, and production. Stock or custom, we’re your optics partner. ###### [Privacy Policy](https://fresneltech-6855151.hs-sites.com/privacy?hsLang=en) #### [Products](https://fresneltech-6855151.hs-sites.com/products?hsLang=en) [Fresnel Lenses](https://www.fresneltech.com/fresnel-lenses?hsLang=en) [Polymer Aspheres](https://www.fresneltech.com/polymer-aspheres?hsLang=en) [PIR Arrays](https://www.fresneltech.com/pir-arrays?hsLang=en) [Silicone Optics](https://www.fresneltech.com/silicone-optics?hsLang=en) [Diffusers](https://www.fresneltech.com/diffusers?hsLang=en) [Tooling](https://www.fresneltech.com/optical-tooling?hsLang=en) [Materials](https://www.fresneltech.com/materials?hsLang=en) #### [Contact Us](https://fresneltech-6855151.hs-sites.com/contact-us?hsLang=en) 101 W. Morningside Drive Fort Worth, TX 76110 Phone: [(817) 926-7474](tel:+1-817-926-7474) info@fresneltech.com #### **Fresnel Technologies** Fresnel Technologies, Inc. has specialized in high-precision polymer optics for nearly forty years. Our cutting-edge designs and unique expertise in molding and machining bring you the highest quality optics every time. In order to best support our customers, we offer guidance and assistance throughout the entire product development process. From design, through prototyping, to production, we enable innovative optical systems. Stock or custom, we’re your optics partner. #### [Precision Optics](https://fresneltech-6855151.hs-sites.com/products?hsLang=en) - [Fresnel Lenses](https://www.fresneltech.com/fresnel-lenses) - [Polymer Aspheres](https://www.fresneltech.com/polymer-aspheres) - [PIR Lens Arrays](https://www.fresneltech.com/pir-arrays) - [Silicone Optics](https://www.fresneltech.com/silicone-optics) - [Diffusers](https://www.fresneltech.com/diffusers) - [Tooling](https://www.fresneltech.com/optical-tooling) - [Materials](https://www.fresneltech.com/materials) #### [Contact Us](https://fresneltech-6855151.hs-sites.com/contact-us?hsLang=en) 101 W. Morningside Drive Fort Worth, TX 76110 Phone: [(817) 926-7474](tel:+1-817-926-7474) info@fresneltech.com ###### [Privacy Policy](https://fresneltech-6855151.hs-sites.com/privacy?hsLang=en) Fresnel Technologies, Inc. specializes in the design and manufacturing of molded plastic Fresnel lenses, molded polymer optics in general, and infrared-transmitting optical materials. We offer design assistance, diamond machining, prototyping, tooling, and production. Stock or custom, we’re your optics partner. [Privacy Policy](https://www.fresneltech.com/privacy?hsLang=en) - ![](https://px.ads.linkedin.com/collect/?pid=5419252&fmt=gif)