Red Green Reflex
 |
US $32.99
The Truth About Pure Black And Other Features Of Your LED Screen
In the past we discussed some basic information about LED technology. So just to summarize in case you missed anything, here's a brief recap:
* LED = a semi-conductor that emits light
* Pixel = the basic luminous dot, which can contain one or more LEDs
* Pitch = the distance between pixels, expressed in millimetres
* Pure white = the perfect balance of red, green, and blue
* Minimum Viewing Distance (MVD) = the closest you can get before image appears pixelated. The type of screen, as well as the type of content displayed, plays a role here.
* LED screen = smaller modules (from 4*4cm to over 1*1m) assembled together
* Colors available = up to 280 trillion (65,000 * 65,000 * 65,000).
* Gamma correction = the exponential correction needed to adapt colors to the logarithmic vision of the human eyes
Now let's take a deeper look into further features that define the quality of an LED screen. We mentioned several times the importance of having a pure white (the perfect balance of red, green, and blue) in order to have the highest image quality. Now lets see the importance of having pure black.
How do you obtain a pure black on an LED screen? Well, you do it by turning off all the LEDs. Pretty easy, huh? Actually, no. The biggest problem in obtaining pure black with an LED display is the fact that you do not use LEDs to get the black. In fact, if all the LEDs are switched off, you can't rely on your advanced electronic control system.
So how do you do that? You ask the mechanical engineer - incredible, but true. Obtaining pure black is a question of mechanical structure of the LED screen. Indeed, pure black entirely depends on how dark the surface can get when the screen is turned off.
Trust me, it's not easy. The main complication is that such a wide surface will always have a reflection factor, meaning that, if you are not careful, you might end up with a huge black mirror when you turn off the screen. That's why the frontal design of the LED walls is so important, because it must be dark without being flat and reflective as a mirror.
Why, exactly, is pure black so important? Because it defines the contrast levels of the LED screen. The contrast level is the difference between the light emitted by the display and the environmental light reflected by the screen's surface. Minor is the light reflected, higher is the contrast and, therefore, the color depth and the naturalness of the images.
To increase the contrast level, professional LED screen manufacturers provide particular anti-reflex flyers that split the light and don't reflect it, increasing the visibility of the screen even in direct sunlight. The contrast level of a LED display is a fundamental factor to take into consideration, especially during huge events broadcast via television.
What should you be aware of when broadcasting an live event on your LED screen? First of all, the LED wall refresh rate. The refresh rate indicates the number of times that the image refreshes every second. For example, a PC monitor has a refresh rate of 72Hz and, therefore, refreshes all the pixels of the screen, from top to bottom, 72 times every second. To provide a comparison, most TV monitors have a refresh rate of 50Hz and only few products of the last generation have a 100Hz refresh rate.
Professional LED screens have a minimum refresh rate of 240Hz, which is almost triple of that of most advanced TV monitors. The refresh rate is fundamental, because it determines the image's quality: if it is too low, the LED screen would display a flickering image when recorded by a professional camera. Some manufacturers offer a refresh rate as high as 2000Hz to meet the demands of the broadcast industry, especially important for events with rapid camera movements and HD format.
Secondly, be aware of brightness levels. Depending on the location, you might have different needs for brightness. Outdoor events will obviously require an incredibly high brightness to contrast the sunlight. However, if the event is indoors, you must have a lower brightness in order to avoid solarization. To provide you with a practical example, an average frontal brightness is 2,000 to 3,000 NITs for indoor use and up to 5,000 to 6,000 NITs for outdoor use LED screen.
About the Author
Get the FREE ebook specifically for LED Screens Buyers by Fabio Aversa. He is a recognized LED Displays specialist and marketing manager for Euro Display, a leading LED Screens manufacturer and supplier company.
|
|
Firefield Red-Green Reflex Sight - 4 Reticle Patterns Black - FF13004 $39.99 Fire Field Red-Green Reflex Sight offers 4 different reticle patterns with 7 different brightness settings. This Firefield Red Green Reflex Sight offers the option to use either red or green lit reticle. This series of FireField were ergonomically designed to create a comfortable, lightweight, accurate reflex sights while still maintaining peripheral and depth perception while shooting your gun. These are great for handguns and shotguns. Just remove the cap to turn on the optic sight and put the cap back on to turn it off. The reticles are easy to change with a flip of a switch. The FireField Red Green Reflex Sight FF13004 includes adjustment tools, rubber lens covers and lithium battery CR2032. |
|
|
Firefield FF13004 Firefield Red And Green Reflex Sight $57.98 Landmark Outdoors and Yukon Advanced Optics branded products are at the vanguard of quality outdoor activity supplies and offer a wide range and variety of unique product lines. The exclusive features and benefits integrated into each product set Landmak Outdoors and Yukon Advanced Optic apart from all others and fuse high quality with an affordable price. Firefield Black Reflex Sight Black 4 Illuminated Reticles Red and Green Weather Resistant Adjustable Brightness Control Weaver Mount Red Dot and Holographic Sights. The Firefield Reflex Sight is an openstyle reddot sighting solution that s lightweight rugged and affordable. It offers excellent peripheral vision and depth perception for rapid target acquisition. With its large sighting window and a choice of 4 illuminated reticles the Firefield is an excellent choice for any shooting endeavor. |
|
|
Ncstar D4RGC Ncstar Red Green Dot Reflex Sight Camo $80.6 NcSTAR has just designed a Multi Reticle Reflex Sight That Illuminates in RED and GREEN The Sight is equipped with a 7 Position Rheostat (3 positions in each color) so you can set the brightness level that is right for your scenario. With 4 Different Reticles in each Sight and 3 different color finishes NcSTAR definitely has what you needFeatures:. LED (Light Emitting Diode) 100 safe for the eyes. Anodized aluminum body. Heads up display. Unlimited eye relief and field of view. 3 Brightness Settings for Each Color (Red/Green). Powered by three volt lithium battery (CR2032) Specifications:. Magnification:1x. Objective Dia(Mm):24x34. Reticle: Multi Reticle (4). Dot Size: 3 Moa. Click Val: 1 Moa. Exterior Finish: Camo Aluminum. Lens Coating: Platinum. N.W. (Oz.): 4.20. Length (In): 3.2 |
|
|
Ncstar D4RGS Ncstar Red Green Dot Reflex Sight Silver $75.4 NcSTAR has just designed a Multi Reticle Reflex Sight That Illuminates in RED and GREEN The Sight is equipped with a 7 Position Rheostat (3 positions in each color) so you can set the brightness level that is right for your scenario. With 4 Different Reticles in each Sight and 3 different color finishes NcSTAR definitely has what you needFeatures:. LED (Light Emitting Diode) 100 safe for the eyes. Anodized aluminum body. Heads up display. Unlimited eye relief and field of view. 3 Brightness Settings for Each Color (Red/Green). Powered by three volt lithium battery (CR2032) Specifications:. Magnification:1x. Objective Dia(Mm):24x34. Reticle: Multi Reticle (4). Dot Size: 3 Moa. Click Val: 1 Moa. Exterior Finish: Silver. Lens Coating: Platinum. N.W. (Oz.): 4.20. Length (In): 3.2 |
|
|
1x30 Reflex Laser Sight Rifle Scope S8610 $25.9 - Fast-focus eyepiece - The reflex laser sight rifle scope is specifically designed for tactical shooters that need a versatile scope for both short-distance, quick-acquisition shooting and medium- to long-distance shooting - Rifle scope is an excellent choice for hunting big game - Manually adjust the trajectory - Marsdenia rate of strong, large adjustment range ballistic - Professional shockproof system, prevent the normal recoil impact and vibration - This reflex laser sight rifle scope allows you to instantly shoot targets at two different distances - The reflex laser sight scope rifle offers a large field of view and bright - Material: Built-in Red and Green laser crosshairs (selected via control dial) - Powered By : CR2032 cell batteries (included)???????????????????????????????????????????????????????????????????????????? - Package Included: ?1 x Reflex Laser Sight Rifle Scope ? |
|
|
Silver Base 1x25 Red and Green Dot Reflex Sight with Weaver and 3/8 $59.99 Product Features: LED (Light Emitting Diode) 100% Safe for The Eyes Unlimited Eye Relief and Field of View Multi-Position Rheostat Knob for Red and Green Illumination Interchangeable Weaver and Dovetail Mount Includes Extra Battery and Mounting Tools |
|
|
Ncstar DAS Ncstar 1X25 Red Green Dot Reflex Sight Silver $35.1 Features:. LED (Light Emitting Diode) 100 safe for the eyes. Unlimited eye relief and field of view. Multi position rheostat knob for Red or Green illumination PLUS interchangeable weaver and dovetail mount. Integrated mount. Includes extra battery and mounting tool Specifications:. Magnification:1x. Objective Dia(Mm):25.00. Reticle: Red Dot/Green Dot. Dot Size: 5 Moa. Click Val: 1 Moa. Exterior Finish: Silver Aluminum. Lens Coating: Clear. N.W. (Oz.): 4.50. Length (In): 4.06. Mount: Interchangeable (Weaver Stlye / 3/8 Dovetail) |
|
|
Ncstar DAB Ncstar 1X25 Red Green Dot Reflex Sight Black $33.75 Features:. LED (Light Emitting Diode) 100 safe for the eyes. Unlimited eye relief and field of view. Multi position rheostat knob for Red or Green illumination PLUS interchangeable weaver and dovetail mount. Integrated mount. Includes extra battery and mounting tool Specifications:. Magnification:1x. Objective Dia(Mm):25.00. Reticle: Red Dot/Green Dot. Dot Size: 5 Moa. Click Val: 1 Moa. Exterior Finish: Black Aluminum. Lens Coating: Clear. N.W. (Oz.): 4.50. Length (In): 4.06. Mount: Interchangeable (Weaver Stlye / 3/8 Dovetail) |
|
|
Burris SpeedBead Red Dot Reflex Sight 300245 $249 Burris SpeedBead Red Dot Reflex Sight, Remington 870 |
|
|
ATN Ultra Sight Red Dot Reflex Sight $89 ATN Ultra Sight Red Dot Reflex Sight DTRXULSTM |
|
|
Reflex Laser Sight Rifle Scope S8612 (11190309) $37.99 Overview:Fast-focus eyepiece Built-in red and green lasers (selected via control dial) The reflex rifle scope is an excellent choice for hunting big game Manually adjust the trajectory Marsdenia rate of strong, large adjustment range ballistic Professional shockproof system, prevent the normal recoil impact and vibration Powered: CR2032 cell batteries Package Included:1 x Rifle Scope Specification:Weight Approx:260gSize Approx:12.4 x 5 x 5 cm |
|
|
1*30 Reflex Laser Sight Rifle Scope (Red + Green Laser Configurable) $25.08 - Built-in Red and Green laser crosshairs (selected via control dial)- Powered by CR2032 cell batteries (included) |
|
|
1*45 Reflex Laser Sight Rifle Scope (Red + Green Laser Configurable) $25.16 - Built-in red and green lasers (selected via control dial)- Powered by CR2032 cell batteries |
|
|
Nc Star D4Rgs Red Green Dot Reflex Sight 4 Different ReticlesWeaver BaseSilver $80.99 The NCStar Dual Illuminated Multi Reticle Red Dot Scope increases your accuracy response time and intuitive shooting. The red dot s design incorporates technology use by military units worldwide on land sea and even in the air. This sighting mechanism will allow you to keep both eyes open and will see true independent of your head position or head movement. This scope has many of the tried and true design innovations of classic reflex sights but engineered to a present day level of precision with the best materials. This sight is manufactured with lightweight aircraft grade aluminum for resilience in the most rugged conditions and is made to last a lifetime. Features:. Color/Finish: Silver. Sighting Reticle: 4 Illuminated Styles. Rheostat Knob: 3 Brightness Levels for Each Color (Red and Green). Unlimited Eye Relief and Field of View. Objective: 24mm34mm. Click: 1 MOA. Length: 3.25 . Dot Size: 3 MOA. Len Coating: Ruby. Billet 6061 T6 Aircraft Grade Aluminum Construction. Shock Proof. Integrated Weaver Mount. Mounting Tool. Extra Lithium Battery. |
|
|
Otterbox Reflex APL7-I4XXX Skin for Smartphone - Green, Black - Polycarbonate, Rubber APL7I4UNIC8E4OTR $27.71 Otterbox Reflex APL7-I4XXX Skin for Smartphone - Green, Black - Polycarbonate, Rubber APL7I4UNIC8E4OTR |
|
|
BSA 1*30 Reflex Laser Sight Rifle Scope (Red + Green Laser Configurable) $20.1 - Built-in Red and Green laser crosshairs (selected via control dial)- Powered by CR2032 cell batteries (included)SpecificationsDimensions: 3.94 in x 2.64 in x 1.57 inWeight: 8.04 oz |
|
|
Tag Heuer Reflex Series-3101 $350 Tag Heuer Reflex Series-3101 Eyeglasses for Men are available at BestBuyEyeglasses.com in the following colors: Beige/Sand, Black, Gray/Gunmetal, Red, Silver. The style is Rimless and the frame material is Plastic. Tag Heuer Reflex Series-3101 Rimless Plastic Rimless Eyeglasses These frames accept prescription lenses. |
|
|
Tag Heuer Reflex Series-3110 $350 Tag Heuer Reflex Series-3110 Eyeglasses for Men are available at BestBuyEyeglasses.com in the following colors: Beige/Sand, Red, Silver. The style is Rimless and the frame material is Plastic. Tag Heuer Reflex Series-3110 Rimless Plastic Rimless Eyeglasses These frames accept prescription lenses. |
|
|
Tag Heuer Reflex Series-3201 $350 Tag Heuer Reflex Series-3201 Eyeglasses for Men are available at BestBuyEyeglasses.com in the following colors: Black, Blue, Red, Silver, Tortoise. The style is Semi-Rimless and the frame material is Plastic. Tag Heuer Reflex Series-3201 Semi-Rimless Plastic Half Rim Eyeglasses These frames accept prescription lenses. |
|
|
Tag Heuer Reflex Series-3102 $350 Tag Heuer Reflex Series-3102 Eyeglasses for Men are available at BestBuyEyeglasses.com in the following colors: Beige/Sand, Black, Red, Silver. The style is Rimless and the frame material is Plastic. Tag Heuer Reflex Series-3102 Rimless Plastic Rimless Eyeglasses These frames accept prescription lenses. |
|
|
Black Base 1x25 Red and Green Dot Reflex Sight with Weaver and 3/8 Dovetail $59.99 Product Features: LED (Light Emitting Diode) 100% Safe for The Eyes Unlimited Eye Relief and Field of View Multi-Position Rheostat Knob for Red and Green Illumination Interchangeable Weaver and Dovetail Mount Includes Extra Battery and Mounting Tools |
|
|
The Reflex $10 The Reflex - Duran Duran |
|
|
Black Red Dot Reflex Sight with 4 Different Reticles and Weaver Base $99.99 Product Features:LED (Light Emitting Diode) 100% Safe for The Eyes Anodized Aluminum Body Heads Up Display Unlimited Eye Relief and Field of View 7 Position Rheostat Knob for Multiple Brightness Settings 3 Brightness Settings for Each Color (Red/Green Models) Powered By Three Volt Lithium Batteries (Cr2032) |
|
|
Silver Base Red Dot Reflex Sight with 4 Different Reticles/Weaver $99.99 Product Features:LED (Light Emitting Diode) 100% Safe for The Eyes Anodized Aluminum Body Heads Up Display Unlimited Eye Relief and Field of View 7 Position Rheostat Knob for Multiple Brightness Settings 3 Brightness Settings for Each Color (Red/Green Models) Powered By Three Volt Lithium Batteries (Cr2032) |
|
|
Camo Red Dot Reflex Sight with 4 Different Reticles/Weaver Base $99.99 Product Features:LED (Light Emitting Diode) 100% Safe for The Eyes Anodized Aluminum Body Heads Up Display Unlimited Eye Relief and Field of View 7 Position Rheostat Knob for Multiple Brightness Settings 3 Brightness Settings for Each Color (Red/Green Models) Powered By Three Volt Lithium Batteries (Cr2032) |
|
|
S8626 BSA 1X 30 Reflex Laser Sight Rifle Scope $27.14 - This is a BSA 1X 30 reflex laser sight rifle scope, it is made of high quality, 30mm objective diameter can give you a clear view field, a good choice for you? - Rifle scope is an excellent choice for hunting big game - Built-in Red and Green laser crosshairs (selected via control dial) - This rifle scope is powered by CR2032 cell batteries (included) - Reticle enables quick and precise sighting in - Lenses achieve outstanding brightness, even in low light situations - Robust, one-piece tube is built to stand up to the most abusive recoil and demanding terrains ? |
|
|
OtterBox Reflex Series for iPhone 4 - Universal - Green/Black $26.95 OTTERBOX REFLEX SERIES APPLE IPHONE 4 UNIVERSAL GREEN/BLACKiPhone® 4 Reflex Series CaseAPL7-I4UNI-C8-E4OTR_AYay! This case IS compatible with the white iPhone 4. Enjoy your OtterBox protection!The OtterBox Reflex Series case for iPhone® 4 is compact and lightweight yet inside incorporates re |
|
|
Swiss Arms Reflex Red Dot Sight $29.95 Features: *Swiss Arms Reflex Red Dot Sight. *11 brightness levels Off position. *Box black. *Adjustable elevation and windage. *Anti scratch coated lens. *High density plastic. *Picatinny standard rail. |
|
|
1 x 30 Reflex Laser Sight Rifle Scope (Red Green Laser Configurable) $35.59 HighlightsBuilt-in Red and Green laser crosshairs (selected via control dial)Made from high quality aluminum alloy material, the casing of the flashlight is very firm and durable. After a special oxidizing procedure, it avoids sleeking and rubbing to make it more comfortable in your hand. With the water-proof design, it deals with a nasty wild environment easily. With a hanging string at the end of the flashlight,it is easy to take along.The lifespan of the LED is 10,000 hours, and the brightness output is very high, a good choice for outdoor activities.SpecificationBattery: CR2032Dimension(cm): 14.2 x 5.5 x 5Weight(Kg): 0.2988Package Contents1 x Rifle Scope |
|
|
Otterbox Iphone 4 Reflex Case Green And Black $40.33 The OtterBox Reflex Series for the iPhone 4 takes innovation to a whole new level. Surrounding your iPhone with a cushion of air and inspired by the crumple zone of a car this case can take a hit and keep your precious shiny iPhone as good as the day you got it. Plus you#039;ll love how easily the Reflex Series snaps apart for convenient docking accessFeatures: Reflex Zonestrade; in corners Complete interaction of the device#039;s functions Easy snapoff access for docking Cushion of air surrounds the devicePackage Contents: Reflex Case Screen Protector |
|
|
Nc Star Dab 1X25 Red Green Dot Reflex Sight Weaver .37 In. Dovetail BaseBlack $33.75 Features:. LED (Light Emitting Diode) 100 safe for the eyes. Anodized Aluminum body. Heads up display. Unlimited eye relief and field of view. Seven Position rheostat knob for multiple brightness settings. Powered by three volt lithium battery (CR2032). Includes extra battery lens cover mounting tool. Specifications:. Magnification: 1x. Objective Dia(Mm): 25.00. Reticle: Red Dot/Green Dot. Dot Size:5 Moa. Click Val: 1 Moa. Exterior Finish: Black Aluminum. Lens Coating: Clear. Length: 4.06 . Mount: Integrated Weaver Style. |
|
|
Nc Star Das 1X25 Red Green Dot Reflex Sight Weaver .37 In. Dovetail BaseSilver $35.1 Features:. LED (Light Emitting Diode) 100 safe for the eyes. Anodized Aluminum body. Heads up display. Unlimited eye relief and field of view. Seven Position rheostat knob for multiple brightness settings. Powered by three volt lithium battery (CR2032). Includes extra battery lens cover mounting tool. Specifications:. Magnification: 1x. Objective Dia(Mm): 25.00. Reticle: Red Dot/Green Dot. Dot Size:5 Moa. Click Val: 1 Moa. Exterior Finish: Silver Aluminum. Lens Coating: Clear. Length: 4.06 . Mount: Integrated Weaver Style. |
|
|
Burris FastFire Red Dot Reflex Sight Mount, 1911 Standard Mount $64 Designed for the 1911, this is the Standard Mount for the Red-Dot Reflex Sight. Most other handguns require a different Mounting Plate. |
|
|
Tag Heuer Reflex 2 Series-3702 $350 Tag Heuer Reflex 2 Series-3702 Eyeglasses for Men are available at BestBuyEyeglasses.com in the following colors: Beige/Sand, Black, Gray/Gunmetal, Red. The style is Rectangle and the frame material is Metal. Tag Heuer Reflex 2 Series-3702 Rectangular Metal Full Rim Eyeglasses These frames accept prescription lenses. |
|
|
Tag Heuer Reflex 2 Series-3704 $350 Tag Heuer Reflex 2 Series-3704 Eyeglasses for Men are available at BestBuyEyeglasses.com in the following colors: Black, Blue, Brown, Red. The style is Rectangle and the frame material is Metal. Tag Heuer Reflex 2 Series-3704 Rectangular Metal Full Rim Eyeglasses These frames accept prescription lenses. |
|
|
Tag Heuer Reflex 2 Series-3703 $350 Tag Heuer Reflex 2 Series-3703 Eyeglasses for Men are available at BestBuyEyeglasses.com in the following colors: Beige/Sand, Black, Blue, Brown, Gray/Gunmetal, Red. The style is Rectangle and the frame material is Metal. Tag Heuer Reflex 2 Series-3703 Rectangular Metal Full Rim Eyeglasses These frames accept prescription lenses. |
