reticle - definition - What is ? What is ? reticle definition : reticle A reticle, or reticule (), also known as a graticule (), is a net of fine lines or fibers in the eyepiece of a sighting device, such as a telescope, a telescopic sight, a microscope, or the screen of an oscilloscope. Today, engraved lines or embedded fibers may be replaced by a computer-generated image superimposed on a screen or eyepiece. Both terms may be used to describe any set of lines used for optical measurement, but in modern use reticle is most commonly used for gunsights and such, while graticule is more widely used for the covers of oscilloscopes and similar roles. There are many variations of reticles; this article concerns itself mainly with a simple reticle: crosshairs. Crosshairs are most commonly represented as intersecting lines in the shape of a cross, "+", though many variations exist, including dots, posts, circles, scales, chevrons, or a combination of these.

Most commonly associated with telescopic sights for aiming firearms, crosshairs are also common in optical instruments used for astronomy and surveying, and are also popular in graphical user interfaces as a precision pointer. The reticle is said to have been invented by Robert Hooke, and dates to the 17th century. Another candidate as inventor is the amateur astronomer William Gascoigne, who predated Hooke. ==Use== ===Firearms=== Telescopic sights for firearms, generally just called scopes, are probably the device most often associated with crosshairs. Motion pictures and the media often use a view through crosshairs as a dramatic device, which has given crosshairs wide cultural exposure. ====Reticle shape==== While the traditional thin crossing lines are the original and still the most familiar cross-hair shape, they are really best suited for precision aiming at high contrast targets, as the thin lines are easily lost in complex backgrounds, such as those encountered while hunting. Thicker bars are much easier to discern against a complex background, but lack the precision of thin bars. The most popular types of cross-hair in modern scopes are variants on the duplex cross-hair, with bars that are thick on the perimeter and thin out in the middle.

The thick bars allow the eye to quickly locate the center of the reticle, and the thin lines in the center allow for precision aiming. The thin bars in a duplex reticle may also be designed to be used as a measure. Called a 30/30 reticle, the thin bars on such a reticle span 30 minutes of an arc (0.5º), which happens to be close to 30 inches at 100 yards. This enables an experienced shooter to deduce (as opposed to guess or estimate) the range within an acceptable error limit. ====Wire crosshairs==== Originally crosshairs were constructed out of hair or spiderweb, these materials being sufficiently thin and strong. Many modern scopes use wire crosshairs, which can be flattened to various degrees to change the width. These wires are usually silver in color, but appear black when backlit by the image passing through the scope's optics.

Wire reticles are by nature fairly simple, as they require lines that pass all the way across the reticle, and the shapes are limited to the variations in thickness allowed by flattening the wire; duplex crosshairs, and crosshairs with dots are possible, and multiple horizontal or vertical lines may be used. The advantage of wire crosshairs is that they are fairly tough and durable, and provide no obstruction to light passing through the scope. ====Etched reticles==== The first suggestion for etched glass reticles was made by Philippe de La Hire in 1700. His method was based on engraving the lines on a glass plate with a diamond point. Many modern crosshairs are actually etched onto a thin plate of glass, which allows a far greater latitude in shapes. Etched glass reticles can have floating elements, which do not cross the reticle; circles and dots are common, and some types of glass reticles have complex sections designed for use in range estimation and bullet drop and drift compensation (see external ballistics).

A potential disadvantage of glass reticles is that they are less durable than wire crosshairs, and the surface of the glass reflects some light (about 4% per surface on uncoated glass) lessening transmission through the scope, although this light loss is near zero if the glass is multicoated (coating being the norm for all modern high quality optical products). ====Illuminated reticles==== Reticles may be illuminated, either by a plastic or fiber optic light pipe collecting ambient light or, in low light conditions, by a battery powered LED. Some sights also use the radioactive decay of tritium for illumination that can work for 11 years without using a battery, used in the British SUSAT sight for the SA80 (L85) assault rifle and in the American ACOG (Advanced Combat Optical Gunsight). Red is the most common color used, as it is the least destructive to the shooter's night vision, but some products use green or yellow illumination, either as a single colour or changeable via user selection. ====Graticule==== A graticule is another term for reticle, frequently encountered in British and British military technical manuals, and came into common use during World War One.

===Reticle focal plane=== The reticle may be located at the front or rear focal plane (First Focal Plane (FFP) or Second Focal Plane (SFP)) of the telescopic sight. On fixed power telescopic sights there is no significant difference, but on variable power telescopic sights the front plane reticle remains at a constant size compared to the target, while rear plane reticles remain a constant size to the user as the target image grows and shrinks. Front focal plane reticles are slightly more durable, but most American users prefer that the reticle remains constant as the image changes size, so nearly all modern American variable power telescopic sights are rear focal plane designs. American and European high end optics manufacturers often leave the customer the choice between a FFP or SFP mounted reticle. ====Collimated reticles==== Collimated reticles are produced by non-magnifying optical devices such as reflector sights (often called reflex sights) that give the viewer an image of the reticle superimposed over the field of view, and blind collimator sights that are used with both eyes. Collimated reticles are created using refractive or reflective optical collimators to generate a collimated image of an illuminated or reflective reticle.

These types of sights are used on surveying/triangulating equipment, to aid celestial telescope aiming, and as sights on firearms. Historically they were used on larger military weapon systems that could supply an electrical source to illuminate them and where the operator needed a wide field of view to track and range a moving target visually (i.e. weapons from the pre laser/radar/computer era). More recently sights using low power consumption durable light emitting diodes as the reticle (called red dot sights) have become common on small arms with versions like the Aimpoint CompM2 being widely fielded by the U.S. Military. ====Holographic reticles==== Holographic weapon sights use a holographic image of a reticle at finite set range built into the viewing window and a collimated laser diode to illuminate it. An advantage to holographic sights is that they eliminate a type of parallax problem found in some optical collimator based sights (such as the red dot sight) where the spherical mirror used induces spherical aberration that can cause the reticle to skew off the sights optical axis. The use of a hologram also eliminates the need for image dimming narrow band reflective coatings and allows for reticles of almost any shape or MIL size.

A downside to the holographic weapon sight can be the weight and shorter battery life. As with red dot sights, holographic weapon sights have also become common on small arms with versions like the Eotech 512.A65 and similar models fielded by the U.S. Military and various law enforcement agencies. ===Surveying and astronomy=== In older instruments, reticle crosshairs and stadia marks were made using threads taken from the cocoon of the brown recluse spider. This very fine, strong spider silk makes for an excellent crosshair. ====Surveying==== In surveying, reticles are designed for specific uses. Levels and theodolites would have slightly different reticles. However, both may have features such as stadia marks to allow distance measurements. ====Astronomy==== For astronomical uses, reticles could be simple crosshair designs or more elaborate designs for special purposes. Telescopes used for polar alignment could have a reticle that indicates the position of Polaris relative to the north celestial pole. Telescopes that are used for very precise measurements would have a filar micrometer as a reticle; this could be adjusted by the operator to measure angular distances between stars.

For aiming telescopes, reflex sights are popular, often in conjunction with a small telescope with a crosshair reticle. They make aiming the telescope at an astronomical object easier. The constellation Reticulum was designated to recognize the reticle and its contributions to astronomy. ==See also== *Deflection (military) *Focusing screen – used in photography, and often etched *Iron sight *Photomask - partial plate with holes or transparencies used in photolithography integrated circuit fabrication is also called a "reticle" *Sniper *Mary Babnik Brown - donated her hair to be used as crosshairs ==References== Reticle - Definition and synonyms of reticle in the English dictionary. Translation of reticle to 20 languages. reticle Meaning of reticle in the English dictionary DICTIONARY ETYMOLOGY OF THE WORD RETICLE From Latin rēticulum a little net, from rēte net. Etymology is the study of the origin of words and their changes in structure and significance. PRONUNCIATION OF RETICLE exclamation Reticle is a noun. A noun is a type of word the meaning of which determines reality.

Nouns provide the names for all things: people, objects, sensations, feelings, etc. WHAT DOES RETICLE MEAN IN ENGLISH? Reticle A reticle, or reticule, also known as a graticule, is a net of fine lines or fibers in the eyepiece of a sighting device, such as a telescope, a telescopic sight, a microscope, or the screen of an oscilloscope. Today, engraved lines or embedded fibers may be replaced by a computer-generated image superimposed on a screen or eyepiece. Both terms may be used to describe any set of lines used for optical measurement, but in modern use reticle is most commonly used for gunsights and such, while graticule is more widely used for the covers of oscilloscopes and similar roles. There are many variations of reticles; this article concerns itself mainly with a simple reticle: crosshairs. Crosshairs are most commonly represented as intersecting lines in the shape of a cross, "+", though many variations exist, including dots, posts, circles, scales, chevrons, or a combination of these.

Most commonly associated with telescopic sights for aiming firearms, crosshairs are also common in optical instruments used for astronomy and surveying, and are also popular in graphical user interfaces as a precision pointer. Synonyms and antonyms of reticle in the English dictionary of synonyms SYNONYMS WORDS RELATING TO «RETICLE» reticle pronunciation reticule horus microscope pronounce semiconductor also known graticule fine lines fibers eyepiece sighting device such telescope telescopic sight screen oscilloscope today engraved embedded replaced computer reticle merriam webster scale transparent material instrument especially measuring aiming origin latin reticulum small first grid pattern placed establish position ticulum diminutive american define network wires like focus rēticulum little research home advisory consulting firm focused analyzing impact consumer technologies exploring methodology partnership Translation of «reticle» into 20 languages TRANSLATOR TRANSLATION OF RETICLE Find out the translation of reticle to 20 languages with our English multilingual translator . The translations of reticle from English to other languages presented in this section have been obtained through automatic statistical translation; where the essential translation unit is the word «reticle» in English.

List of principal searches undertaken by users to access our English online dictionary and most widely used expressions with the word «reticle». FREQUENCY OF USE OF THE TERM «RETICLE» OVER TIME The graph expresses the annual evolution of the frequency of use of the word «reticle» during the past 500 years. Its implementation is based on analysing how often the term «reticle» appears in digitalised printed sources in English between the year 1500 and the present day. Examples of use in the English literature, quotes and news about reticle EXAMPLES 10 ENGLISH BOOKS RELATING TO «RETICLE» Discover the use of reticle in the following bibliographical selection. Books relating to reticle and brief extracts from same to provide context of its use in English literature. 1 Encyclopedia of Optical Engineering Reticle systems, which are widely used in IR seekers and trackers, are considered to be the classical approach for estimating the position of a target in the considered field of view (FOV). This type of seeker is most suitable for tracking airborne ... Ronald G. Driggers, 2003 10 Manuale Volo Lockheed F104G Consortium 1975 (eng): FLIGHT ...

When the switch is in the NORM position and sight is uncaged, the sight reticle is illuminated and the reticle position is determined by the position of the armament mode selector switch and by the armament control computer after lockon. COSTARMAEREO, 1975 10 NEWS ITEMS WHICH INCLUDE THE TERM «RETICLE» Find out what the national and international press are talking about and how the term reticle is used in the context of the following news items. 1 Nikon adding new low priced P-223 and P-308 riflescopes The new P-308 is a nice mid-to-long-range scope that has a bullet drop compensating or BDC reticle hashed out to 800 yards. With its upper 12x magnification ... «Guns.com, May 15» 2 Using a Mil Dot reticle for range estimation So many scopes on the market today are outfitted with a Mil Dot reticle, but are people using them to their full potential? The answer is probably “no.” The Mil Dot ...

«Guns.com, Apr 15» 3 CyberOptics Presents How to Quickly Identify and Resolve Particle … “Minimizing airborne particles in lithography applications remains a challenge if using traditional surface scan reticles, in-situ or hand-held methods. Legacy ... «Business Wire, Apr 15» 4 Tricks For Using Long-Range Reticles This is an interesting scope that features a custom reticle with range-specific hash marks running down the vertical wire. In use, you determine the range with ... «Scout, Feb 15» 5 Hawke Sport Optics Intros Shotgun - Muzzleloader Reticle In … The new Slug Gun SR reticle has been designed to calibrate to the trajectory of shotgun and muzzleloader slugs fired between 1,300 and 1,800 fps. The reticle ... «AmmoLand.com, Sep 14» 6 Hacked EOTech with custom reticle (VIDEO) The OLED display replaces the laser module to provide the HUD/reticle. One neat advantage of using the OLED is that the HUD can extend 'beyond' the users ...

«Guns.com, Aug 14» 7 Trijicon Offers New ACOG Reticle Options for M193 Ammunition Wixom, MI -(Ammoland.com)- The undisputed leader in battlefield optics announces additional reticle offerings to the already proven ACOG (Advanced Combat ... «AmmoLand.com, Jul 14» 8 GTA 5 Essential Tips and Tricks: Dodge Punches, Add Complex … ... their cars more than what LS Customs would allow, to dodge punches and fight back with style, to enable the Complex Reticle and much more. Watch it below. «International Business Times UK, May 14» 9 KLA-Tencor Announces New Teron™ SL650 Reticle Inspection … MILPITAS, Calif., May 20, 2014 /PRNewswire/ -- Today, KLA-Tencor Corporation (NASDAQ: KLAC) announced the Teron™ SL650, a new reticle quality control ... «PR Newswire, May 14» 10 Range-Compensating Reticles Vs.

Plain Old Crosshairs The former, of course, are all the rage, have been for a while, and although I've hunted with a variety of scopes sporting a range-compensating reticle, I've been ... «Field and Stream, Nov 13» REFERENCE Asphera - aspheres and precision optics we continually expand our capabilities! A reliable source of precision optics Fill out our Quote Request form or send us an email at sales@asphera.net Download our current stock available (ships within 48 hours) price sheet by clicking here Single Point Diamond Turning Asphera’s newest technology is single point diamond turning (SPDT) offering the highest precision for manufacturing complex aspherical shapes. CNC polishing is the most efficient method of asphere fabrication.

It relies on the technique of polishing one lens at a time on a computer-controlled platform Precision Glass Moulding (PGM) is fabricating a mould from a thermally and physcially durable material created with an optical quality surface profile Asphera has a long history of working with high-precision UV-VIS-IR (193nm to 50μm) components (windows, wedges, domes, waveplates, prisms, blanks…) for research and development as well as industrial applications. Sapphire’s broad transmission range of 150nm to 5μm can withstand any mounting configuration and can protect any sensing device. Ultra-Thin Quartz and UV Fused Silica Windows Alpha quartz (or low quartz) is the name of the high crystalline type of quartz. Low is in reference to the stable silica polymorph at low temperatures.

Lithium Fluoride (LiF) is commonly used for optical components (windows, wedge windows, lenses, prisms) in a wide spectrum band from vacuum ultra-violet to infared Our custom glasses and crystalline substrates (or customer provided substrates) are deposited using thermal evaporation by resistive heaters, electron beam vacuum and ion assisted evaporation A reticle (or reticule) is a net of fine lines or fibers in the eyepiece of a sighting device such as a telescope, a telescopic sight, a microscope, or the screen of an oscilloscope. Asphera is keeping the tradition of plano optics and prisms from small runs of 3 pieces up to OEM quantities of 10,000 pieces per month. We offer a large selection of prisms (Penta, Right Angle, Corner Cube Retro-reflectors, Roof, Porro, beamsplitting cubes…) Lenses can be used for the simple collection of light, the scanning of laser beams, precise imaging and image transfer. Spherical optics are components of lenses, achromatic doublets, triplets and mirrors produced from all forms of UV-VIS-IR materials with high accuracy.

Opto-mechanical assemblies such as objectives, eye-pieces, reticle, collimating and other cell assemblies are produced with multi-axis, high speed CNC machines at one location with our plant’s in-house custom mechanics facility with environmental testing according to MIL Standards. Reticle - 必应 Sign in Reticle A reticle, or reticule (from Latin reticulum, meaning "net"), also known as a graticule (from Latin craticula, meaning "gridiron"), is a net of fine lines or fibers in the eyepiece of a sighting device, such as a telescope, a telescopic sight, a microscope, or the screen of an oscilloscope. Today, engraved lines or embedded fibers may be replaced by a computer-generated image superimposed on a screen or eyepiece. Both terms may be used to describe any set of lines used for optical measurement, but in modern use reticle is most commonly ... (展开) used for gunsights and such, while graticule is more widely used for the covers of oscilloscopes and similar roles. There are many variations of reticles; this article concerns itself mainly with a simple reticle: crosshairs.

Crosshairs are most commonly represented as intersecting lines in the shape of a cross, "+", though many variations exist, including dots, posts, circles, scales, chevrons, or a combination of these. Most commonly associated with telescopic sights for aiming firearms, crosshairs are also common in optical instruments used for astronomy and surveying, and are also popular in graphical user interfaces as a precision pointer. The reticle is said to have been invented by Robert Hooke, and dates to the 17th century. Another candidate as inventor is the amateur astronomer William Gascoigne, who predated Hooke. 4 2324 Showing the Google Maps reticle on Android I'v encountered a problem with Google Maps on Android. In my app I have a location-chooser where the user navigates to his desired location to save the exact street location. In order for the user to actually see what street he is no (and not just the general area) I need to mark the middle of the map clearly.The problem is that the reticle (the little circle marking the center) from Google Maps usually won't show. It appears at the most 1 out of 10 times I open the map, probably less.

This happens regardless if I add other overlays or if I just show the map as is. I am aware of ReticleDrawMode and have tried setting it to DRAW_RETICLE_OVER, but this does not seem to work (and it should be the default already).Have I missed something here? I have searched for the problem and from what I have see the problem seems to be common, but I havn't seen a solution for actually forcing it to always show, only for hiding it.If the reticle is broken, does anyone have a good suggestion for how to create a custom one? As I said the the user will navigate the map, so I can't just do a normal overlay on a fixed point of the map, and the map also does not take up the full screen so drawing something over it is a bit ugly (although I guess that will be my last resort). 图片: 图片: 图片: 答 And of course I found the answer just after I asked the question, or at least part of the answer.I haven't found out how to get the reticle to work, but the easy workaround for t...

来自 stackoverflow.com 4 Telescopic sights for firearms, generally just called scopes, are probably the device most often associated with crosshairs. Motion pictures and the media often use a view through crosshairs as a dramatic device, which has given crosshairs wide cultural exposure. Reticle shape[edit] While the traditional thin crossing lines are the original and still the most familiar cross-hair shape, they are really best suited for precision aiming at high contrast targets, as the thin lines are easily lost in complex backgrounds, such as those encountered while hunting. Thicker bars are much easier to discern against a complex background, but lack the precision of thin bars. The most popular types of cross-hair in modern scopes are variants on the duplex cross-hair, with bars that are thick on the perimeter and thin out in the middle. The thick bars allow the eye to quickly locate the center of the reticle, and the thin lines in the center allow for precision aiming. The thin bars in a duplex reticle may also be designed to be used as a measure.

Called a 30/30 reticle, the thin bars on such a reticle span 30 inches at 100 yards when the scope's power is at 4x. This enables an experienced shooter to deduce (as opposed to guess or estimate) the range within an acceptable error limit. Wire crosshairs[edit] Originally crosshairs were constructed out of hair or spiderweb, these materials being sufficiently thin and strong. Many modern scopes use wire crosshairs, which can be flattened to various degrees to change the width. These wires are usually silver in color, but appear black when backlit by the image passing through the scope's optics. Wire reticles are by nature fairly simple, as they require lines that pass all the way across the reticle, and the shapes are limited to the variations in thickness allowed by flattening the wire; duplex crosshairs, and crosshairs with dots are possible, and multiple horizontal or vertical lines may be used. The advantage of wire crosshairs is that they are fairly tough and durable, and provide no obstruction to light passing through the scope.

Etched reticles[edit] The first suggestion for etched glass reticles was made by Philippe de La Hire in 1700. His method was based on engraving the lines on a glass plate with a diamond point. Many modern crosshairs are actually etched onto a thin plate of glass, which allows a far greater latitude in shapes. Etched glass reticles can have floating elements, which do not cross the reticle; circles and dots are common, and some types of glass reticles have complex sections designed for use in range estimation and bullet drop and drift compensation (see external ballistics). A potential disadvantage of glass reticles is that they are less durable than wire crosshairs, and the surface of the glass reflects some light (about 4% per surface on uncoated glass) lessening transmission through the scope, although this light loss is near zero if the glass is multicoated (coating being the norm for all modern high quality optical products). Illuminated reticles[edit] Reticles may be illuminated, either by a plastic or fiber optic light pipe collecting ambient light or, in low light conditions, by a battery powered LED.

Some sights also use the radioactive decay of tritium for illumination that can work for 11 years without using a battery, used in the British SUSAT sight for the SA80 (L85) assault rifle and in the American ACOG (Advanced Combat Optical Gunsight). Red is the most common color used, as it is the least destructive to the shooter's night vision, but some products use green or yellow illumination, either as a single colour or changeable via user selection. Graticule[edit] A graticule is another term for reticle, frequently encountered in British and British military technical manuals, and came into common use during World War One. Reticle focal plane The reticle may be located at the front or rear focal plane (First Focal Plane (FFP) or Second Focal Plane (SFP)) of the telescopic sight. On fixed power telescopic sights there is no significant difference, but on variable power telescopic sights the front plane reticle remains at a constant size compared to the target, while rear plane reticles remain a constant size to the user as the target image grows and shrinks.

Front focal plane reticles are slightly more durable, but most American users prefer that the reticle remains constant as the image changes size, so nearly all modern American variable power telescopic sights are rear focal plane designs. American and European high end optics manufacturers often leave the customer the choice between a FFP or SFP mounted reticle. Collimated reticles[edit] Main article: Reflector sight Collimated reticles are produced by non-magnifying optical devices such as reflector sights (often called reflex sights) that give the viewer an image of the reticle superimposed over the field of view, and blind collimator sights that are used with both eyes. Collimated reticles are created using refractive or reflective optical collimators to generate a collimated image of an illuminated or reflective reticle. These types of sights are used on surveying/triangulating equipment, to aid celestial telescope aiming, and as sights on firearms. Historically they were used on larger military weapon systems that could supply an electrical source to illuminate them and where the operator needed a wide field of view to track and range a moving target visually (i.e. weapons from the pre laser/radar/computer era).

More recently sights using low power consumption durable light emitting diodes as the reticle (called red dot sights) have become common on small arms with versions like the Aimpoint CompM2 being widely fielded by the U.S. Military. Holographic reticles[edit] Holographic weapon sights use a holographic image of a reticle at finite set range built into the viewing window and a collimated laser diode to illuminate it. An advantage to holographic sights is that they eliminate a type of parallax problem found in some optical collimator based sights (such as the red dot sight) where the spherical mirror used induces spherical aberration that can cause the reticle to skew off the sights optical axis. The use of a hologram also eliminates the need for image dimming narrow band reflective coatings and allows for reticles of almost any shape or MIL size. A downside to the holographic weapon sight can be the weight and shorter battery life. As with red dot sights, holographic weapon sights have also become common on small arms with versions like the Eotech 512.A65 and similar models fielded by the U.S. Military and various law enforcement agencies.

In older instruments, reticle crosshairs and stadia marks were made using threads taken from the cocoon of the brown recluse spider. This very fine, strong spider silk makes for an excellent crosshair. Surveying[edit] In surveying, reticles are designed for specific uses. Levels and theodolites would have slightly different reticles. However, both may have features such as stadia marks to allow distance measurements. Astronomy[edit] For astronomical uses, reticles could be simple crosshair designs or more elaborate designs for special purposes. Telescopes used for polar alignment could have a reticle that indicates the position of Polaris relative to the north celestial pole. Telescopes that are used for very precise measurements would have a filar micrometer as a reticle; this could be adjusted by the operator to measure angular distances between stars. For aiming telescopes, reflex sights are popular, often in conjunction with a small telescope with a crosshair reticle. They make aiming the telescope at an astronomical object easier. The constellation Reticulum was designated to recognize the reticle and its contributions to astronomy. Reticle | Military Wiki | Fandom powered by Wikia "Crosshair" redirects here.

For other uses, see Crosshair (disambiguation) . Look up reticle in Wiktionary, the free dictionary. A comparison of different reticles used in telescopic sights. The lower right represents a reticle found in the PSO-1 scope of a Russian SVD dedicated marksman rifle. A reticle, or reticule ( Template:Ety ), also known as a graticule ( Template:Ety ), is a net of fine lines or fibers in the eyepiece of a sighting device, such as a telescope, a telescopic sight , a microscope, or the screen of an oscilloscope. Today, engraved lines or embedded fibers may be replaced by a computer-generated image superimposed on a screen or eyepiece. Both terms may be used to describe any set of lines used for optical measurement, but in modern use reticle is most commonly used for gunsights and such, while graticule is more widely used for the covers of oscilloscopes and similar roles. There are many variations of reticles; this article concerns itself mainly with a simple reticle: crosshairs.

Crosshairs are most commonly represented as intersecting lines in the shape of a cross, "+", though many variations exist, including dots, posts , circles , scales, chevrons , or a combination of these. Most commonly associated with telescopic sights for aiming firearms , crosshairs are also common in optical instruments used for astronomy and surveying, and are also popular in graphical user interfaces as a precision pointer . The reticle is said to have been invented by Robert Hooke , and dates to the 17th century. [1] Contents Telescopic sights for firearms, generally just called scopes, are probably the device most often associated with crosshairs. Motion pictures and the media often use a view through crosshairs as a dramatic device, which has given crosshairs wide cultural exposure. Reticle shape Edit While the traditional thin crossing lines are the original and still the most familiar cross-hair shape, they are really best suited for precision aiming at high contrast targets, as the thin lines are easily lost in complex backgrounds, such as those encountered while hunting. Thicker bars are much easier to discern against a complex background, but lack the precision of thin bars.

The most popular types of cross-hair in modern scopes are variants on the duplex cross-hair, with bars that are thick on the perimeter and thin out in the middle. The thick bars allow the eye to quickly locate the center of the reticle, and the thin lines in the center allow for precision aiming. The thin bars in a duplex reticle may also be designed to be used as a measure. Called a 30/30 reticle, the thin bars on such a reticle span 30 inches at 100 yards when the scope's power is at 4x. This enables an experienced shooter to deduce (as opposed to guess or estimate) the range within an acceptable error limit. Wire crosshairs Edit Etched "FinDot" reticle (a regular mil-dot reticle with the addition of 400 m – 1200 m holdover (stadiametric) rangefinding brackets for 1 meter high or 0.5 meter wide targets at 400, 600, 800, 1000 and 1200 m). Reticle illumination is provided by a tritium ampoule embedded in the elevation turret.

The original crosshairs in fact used hair or spiderweb, as it was thin and strong. Many modern scopes use wire crosshairs, which can be flattened to various degrees to change the width. These wires are usually silver in color, but appear black when backlit by the image passing through the scope's optics. Wire reticles are by nature fairly simple, as they require lines that pass all the way across the reticle, and the shapes are limited to the variations in thickness allowed by flattening the wire; duplex crosshairs, and crosshairs with dots are possible, and multiple horizontal or vertical lines may be used. The advantage of wire crosshairs is that they are fairly tough and durable, and provide no obstruction to light passing through the scope. Etched reticles Edit The day and low-light reticles of the integral reflex sight used on the FN P90 / PS90 USG models The first suggestion for etched glass reticles was made by Philippe de La Hire in 1700. [2] His method was based on engraving the lines on a glass plate with a diamond point. Many modern crosshairs are actually etched onto a thin plate of glass, which allows a far greater latitude in shapes.

Etched glass reticles can have floating elements, which do not cross the reticle; circles and dots are common, and some types of glass reticles have complex sections designed for use in range estimation and bullet drop and drift compensation (see external ballistics ). A potential disadvantage of glass reticles is that they are less durable than wire crosshairs, and the surface of the glass reflects some light (about 4% per surface on uncoated glass [3] ) lessening transmission through the scope, although this light loss is near zero if the glass is multicoated (coating being the norm for all modern high quality optical products). Illuminated reticles Edit Reticles may be illuminated, either by a plastic or fiber optic light pipe collecting ambient light or, in low light conditions, by a battery powered LED . Some sights also use the radioactive decay of tritium for illumination that can work for 11 years without using a battery, used in the British SUSAT sight for the SA80 (L85) assault rifle and in the American ACOG (Advanced Combat Optical Gunsight) .

Red is the most common color used, as it is the least destructive to the shooter's night vision, but some products use green or yellow illumination, either as a single colour or changeable via user selection. Graticule A graticule is another term for reticle, frequently encountered in British and British military technical manuals, and came into common use during World War One. [4] Reticle focal plane Edit The reticle may be located at the front or rear focal plane (First Focal Plane (FFP) or Second Focal Plane (SFP)) of the telescopic sight. On fixed power telescopic sights there is no significant difference, but on variable power telescopic sights the front plane reticle remains at a constant size compared to the target, while rear plane reticles remain a constant size to the user as the target image grows and shrinks. Front focal plane reticles are slightly more durable, but most American users prefer that the reticle remains constant as the image changes size, so nearly all modern American variable power telescopic sights are rear focal plane designs. European high end optics manufacturers often leave the customer the choice between a FFP or SFP mounted reticle.

Collimated reticles Main article: Reflector sight Collimated reticles are produced by non-magnifying optical devices such as reflector sights (often called reflex sights) that give the viewer an image of the reticle superimposed over the field of view, and blind collimator sights that are used with both eyes. Collimated reticles are created using refractive or reflective optical collimators to generate a collimated image of an illuminated or reflective reticle. These types of sights are used on surveying/triangulating equipment, to aid celestial telescope aiming, and as sights on firearms . Historically they were used on larger military weapon systems that could supply an electrical source to illuminate them and where the operator needed a wide field of view to track and range a moving target visually (i.e. weapons from the pre laser/ radar /computer era). More recently sights using low power consumption durable light emitting diodes as the reticle (called red dot sight s) have become common on small arms with versions like the Aimpoint CompM2 being widely fielded by the U.S. Military.

Holographic reticles Edit Holographic weapon sights use a holographic image of a reticle at finite set range built into the viewing window and a collimated laser diode to illuminate it. An advantage to holographic sights is that it eliminates a type of parallax problem found in some optical collimator based sights (such as the red dot sight ) where the spherical mirror used induces spherical aberration that can cause reticle to skew off the sights optical axis . The use of a hologram also eliminates the need for image dimming narrow band reflective coatings and allows for reticles of almost any shape or MIL size. A downside to the holographic weapon sight can be the weight and shorter battery life. As with red dot sights, holographic weapon sights have also become common on small arms with versions like the Eotech 512.A65 and similar models fielded by the U.S. Military [5] and various law enforcement agencies. Surveying and astronomy In older instruments, reticle crosshairs and stadia marks were made using threads taken from the cocoon of the brown recluse spider . This very fine, strong spider silk makes for an excellent crosshair.

[6] [7] Surveying In surveying, reticles are designed for specific uses. Levels and theodolites would have slightly different reticles. However, both may have features such as stadia marks to allow distance measurements. Astronomy Edit For astronomical uses, reticles could be simple crosshair designs or more elaborate designs for special purposes. Telescopes used for polar alignment could have a reticle that indicates the position of Polaris relative to the north celestial pole. Telescopes that are used for very precise measurements would have a filar micrometer as a reticle; this could be adjusted by the operator to measure angular distances between stars. For aiming telescopes, reflex sights are popular, often in conjunction with a small telescope with a crosshair reticle. The reflex sight, such as the Telrad, [8] makes aiming the telescope on an astronomical object or a region of the sky quite easy. The constellation Reticulum was designated to recognize the reticle and its contributions to astronomy. See also View Master Optics Services And Markets The Best Observation Binoculars Available In Vancouver, British Columbia, Victoria, BC, Gulf Islands, BC, North Vancouver, BC And Provides Worldwide Shipping.

A reticle (or reticule) is a net of fine lines or fibers in the eyepiece of a sighting device, such as a telescope, a telescopic sight, a microscope, or the screen of an oscilloscope. The word reticle comes from the Latin “reticulum,” meaning “net.” Reticles (Reticules) Reticles in the eyepieces of the 25/40 x 100 Classic Black binocular are likely to irritate the uninitiated and those focused on recreational viewing. They display as evenly spaced horizontal and vertical markings along the X an Y axis of the eyepieces. If you don’t need them or do not intend to use them in a range finding application, the Contemporary model (no reticules) is a better choice. Lifting Handle The lifting/carrying handle on the top side of the binocular body is enormously useful when installing or removing the binocular from the tripod. Without it there is increased chance of a mishap (dropping the binocular and you don’t want to do that). The contemporary model has a handle, the standard model does not. The photos on the Contemporary model page clearly show the lifting handle.

Finder Scope The finder scope is most useful on the BT 45 x 100 models but may assist novice users of the BT 25/40 x 100 as well. Experienced users of the BT 25/40 x 100 may find it unnecessary. 17 Inch Mini Table Top Tripod The mini table top tripod which is threaded to the underside of the main tripod mount is enormously useful where space is limited e.g. at the window of a small apartment or where you want the comfort of sitting at a table while viewing. The rubber tipped version (for table top use) is standard with the “Contemporary” model. To remove the mini tripod from the main tripod rotate the tabbed ring counterclockwise about half a turn and lift the tripod mount (with legs attached) from the top of the tripod. To reinstall it, align the notches, drop the legs through the top and ensure the two small metal tabs on the sides of the ring to which the mini tripod legs are attached settle into the notches. Once in place snug the tabbed ring with about one turn.

BT 45 x 100 (45 degree oculars) This azimuth mount on this model provides enormous versatility to fixed station viewing of earth and sky. If you have an interest in the night sky or intend to look overhead during the day – watch birds or aircraft for example – you will probably prefer this model Attempt to look overhead without the azimuth mount assembly and you quickly develop a pain in the neck☺. The other key feature of this model is the interchangeable eyepieces. Enthusiastic observers value the ability to install eyepieces of various focal lengths to achieve a range of magnifications and fields of view. A huge array of 1.25” eyepieces of varying quality is available from multiple manufacturers. Prices range from less than $100 to hundreds of dollars per eyepiece. We can assist you in narrowing the options to what may be most appropriate for your intended use. Keen observers often accumulate several eyepiece sets over time. Eyepieces for the BT 45 x 100 Eyepieces are critical to your viewing experience – to what you see, how well you see it and how much of it you see.

There are several models of eyepieces and multiple focal lengths within model lines. The same eyepiece model may vary considerably in quality across manufacturers and in price as well. There are multiple variables to consider when choosing your eyepieces, chief among them the focal length of your binocular and the aperture of your binoculars’ objective lens. After that you will want to pay close attention to their comfort and ease of use for your desired application. Eyepieces may represent a considerable investment so test them before you purchase. Less than ideal RETICLE -- Crossword entry | Crossword Nexus RETICLE Reticle A reticle, or reticule, also known as a graticule, is a net of fine lines or fibers in the eyepiece of a sighting device, such as a telescope, a telescopic sight, a microscope, or the screen of an oscilloscope. Today, engraved lines or embedded fibers may be replaced by a computer-generated image superimposed on a screen or eyepiece.

Both terms may be used to describe any set of lines used for optical measurement, but in modern use reticle is most commonly used for gunsights and such, while graticule is more widely used for the covers of oscilloscopes and similar roles. The above text is a snippet from Wikipedia: Reticle and as such is available under the Creative Commons Attribution/Share-Alike License . reticle Noun A grid , network , or crosshatch found in the eyepiece of various optical instruments to aid measurement or alignment and as such is available under the Creative Commons Attribution/Share-Alike License . Need help with a clue? Try your search in the crossword dictionary! Clue: Book of the month Francis Heaney and Brendan Emmett Quigley, two of the best in the biz, have teamed up for Drunk Crosswords . Grab yourself a copy today! Store NEW! Get a whole bunch of puzzles, pay what you want, and help charity. Mobile App We've got an app, with versions for iPhone, iPod and (finally!) Android. Snap a picture of the QR code above, or simply follow this link for more info. It's free, and the quickest way to get help for your crosswords on the go. Enjoy!

January 1, 2015 – 03:15 pm Wikipedia, the free encyclopedia A reticle, or reticule (from Latin reticulum, meaning "net"), also known as a graticule (from Latin craticula, meaning "gridiron"), is a net of fine lines or fibers in the eyepiece of a sighting device, such as a telescope, a telescopic sight, a microscope, or the screen of an oscilloscope. Today, engraved lines or embedded fibers may be replaced by a computer-generated image superimposed on a screen or eyepiece. Both terms may be used to describe any set of lines used for optical measurement, but in modern use reticle is most commonly used for gunsights and such, while graticule is more widely used for the covers of oscilloscopes and similar roles. There are many variations of reticles; this article concerns itself mainly with a simple reticle: crosshairs. Crosshairs are most commonly represented as intersecting lines in the shape of a cross, "+", though many variations exist, including dots, posts, circles, scales, chevrons, or a combination of these.

Most commonly associated with telescopic sights for aiming firearms, crosshairs are also common in optical instruments used for astronomy and surveying, and are also popular in graphical user interfaces as a precision pointer. The reticle is said to have been invented by Robert Hooke, and dates to the 17th century. Another candidate as inventor is the amateur astronomer William Gascoigne, who predated Hooke. Firearms[edit] Telescopic sights for firearms, generally just called scopes, are probably the device most often associated with crosshairs. Motion pictures and the media often use a view through crosshairs as a dramatic device, which has given crosshairs wide cultural exposure. Reticle shape[edit] While the traditional thin crossing lines are the original and still the most familiar cross-hair shape, they are really best suited for precision aiming at high contrast targets, as the thin lines are easily lost in complex backgrounds, such as those encountered while hunting. Thicker bars are much easier to discern against a complex background, but lack the precision of thin bars. The most popular types of cross-hair in modern scopes are variants on the duplex cross-hair, with bars that are thick on the perimeter and thin out in the middle.

The thick bars allow the eye to quickly locate the center of the reticle, and the thin lines in the center allow for precision aiming. The thin bars in a duplex reticle may also be designed to be used as a measure. Called a 30/30 reticle, the thin bars on such a reticle span 30 inches at 100 yards when the scope's power is at 4x. This enables an experienced shooter to deduce (as opposed to guess or estimate) the range within an acceptable error limit. Source: en.wikipedia.org Crosshair synonym by Babylon's thesaurus English Wikipedia - The Free Encyclopedia Reticle A reticle, or reticule , also known as a graticule , is a net of fine lines or fibers in the eyepiece of a sighting device, such as a telescope, a telescopic sight , a microscope, or the screen of an oscilloscope. Today, engraved lines or embedded fibers may be replaced by a computer-generated image superimposed on a screen or eyepiece.

Both terms may be used to describe any set of lines used for optical measurement, but in modern use reticle is most commonly used for gunsights and such, while graticule is more widely used for the covers of oscilloscopes and similar roles. Deutschsprachige Wikipedia - Die freie Enzyklopädie Fadennetz Unter Fadennetz oder Strichplatte eines Mess- oder anderen Fernrohrs versteht man die auf der inneren Seite des Okulars angebrachte Glasplatte mit feinen Strichen. Wikipédia en français - L'encyclopédie libre Crosshair i. artı işareti, optik aygıtta mercek merkezinden geçen birkaç ince çizgiden biri (referans noktası oluşturan) Babylon English crosshair n. one of the several thin lines that pass through the center of a lens in an optical device (which forms a reference point) Babylon English-Arabic أ.

علامة التصويب‚ شعيرات متصالبة‚ شعيرات التصويب المتقاطعة (في عدسة السلاح مثلا) Babylon English-Hebrew crosshair (ש"ע) "חוט השערה", אחד ממספר פסים דקיקים העוברים דרך מרכז העדשה של מכשיר אופטי (ומהווים נקודות התייחסות) Babylon English-French n. réticule, système de fils croisés à angle droit servant à effectuer des visées Babylon English-Spanish crosshair s. uno de las tantas delicadas líneas que pasan por el centro de una lente en un dispositivo óptico (que forma un punto de referencia) Babylon English-Italian crosshair s. una delle numerose linee sottili che attraversano il centro di una lente in un apparecchio ottico (e che forma un punto di riferimento) Babylon English-German crosshair n.

Crosshair, eine von mehreren dünnen Linsen durch die Mitte der Linse in ein optisches Gerät durchgehen (wodurch ein Bezugspunkt erreicht wird) Babylon English-Japanese

Question: What is the name for a net of fine lines or fibers in the eyepiece of a sighting device, such as a telescope, a telescopic sight, a microscope, or the screen of an oscilloscope?
Answer: Reticle