As shown below, the SPW602, SPW603L, and SPW608 wrenches feature an engraved scale to indicate spanner wrench depth in both imperial and metric increments (0.02" and 0.5 mm, respectively), thereby enabling precise positioning of optics.

The Rollens Platinum Gray and Gold Amber lenses are designed to protect the light-sensitive eyes of post-mydriatic patients by blocking harmful sunlight. Both ...

Thorlabs' Adjustable Spanner Wrench features a spanning range that is continuously adjustable from 0.12" to 2.89" (3.0 mm to 73.4 mm). It is capable of providing an exact fit for retaining rings as large as the SM3RR for Ø3" Lens Tubes and Mounts. The diameter spanned by the blades remains centered while the knurled knob is adjusted.

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SPW501 Spanner WrenchThe double-ended SPW501 Spanner Wrench is designed for tightening Ø1" RS posts with torque slots using the RS Post end of the wrench, as illustrated in the photo to the right. It can also be used to tighten Ø1/2" TR posts and Ø1" RS posts with through holes using the TR Post end of the wrench. This wrench is designed to fit into the slot or through hole and provide leverage for tightening or loosening the post when mounting the post directly to a tapped hole. Please use minimal force when tightening to prevent binding due to overtightening.

How does aretroreflectorwork

TECHSPEC® Mounted N-BK7 Corner Cube Retroreflectors are mounted in an aluminum body and held in place with RTV potting cement. Due to their complex shape, corner cube retroreflectors can often be challenging to mount. These retroflectors provide a convenient and durable solution. TECHSPEC® Mounted N-BK7 Corner Cube Retroreflectors are easily integrated via two ¼-20 tapped holes. In addition, each retroreflector has silvered reflecting surfaces to decrease polarization effects and increase field of view. For dimension details, see the “Technical Information” tab.

Retroreflective vs reflective

Thorlabs' Spanner Wrenches are used to install and adjust retaining rings in lens tubes, lens mounts, diode mounts, and other optomechanics. They are also useful when positioning thread adapters for aspheric lenses, connectorized fibers, and fiber collimators and installing locking collars on adjuster screws.

AR coatings help to produce brighter images while reducing the intensity of ghost images which may otherwise be produced in optical systems having multiple ...

These spanner wrenches enable adjustment or installation of many of our standard retaining rings. The hollow construction of each spanner wrench allows the retaining ring to be adjusted without obscuring the beam path. They feature knurled handles for improved grip as well as flanges to keep the retaining ring on the end of the spanner wrench while inserting or removing the ring.

Can't find what you need? From fast modifications to stock optics to custom designs, we can help you take your optical system from design to prototype to volume production. Contact us to get started today.

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Calculate 120 mm to cm for free on Inches to Calculator. Quick and easy 120 mm to cm conversions, try now!

If using these bits with a power drill, care should be taken to avoid overtightening the retaining ring due to the added torque created by the tool. Electric tools should be used at a low speed, and we recommend that the final tightening of the retaining ring be done by hand.

Retroreflectorexamples

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We can use polarizing lenses to reduce glare. Light reflecting off horizontal surfaces like the road, water, or snow is horizontally polarized. A polarizing ...

Our standard spanner wrenches provide safe, simple adjustment of retaining rings without risking damage to optical elements. They feature aluminum, diamond-knurled grips and a hollow interior that allows a beam to pass through while the part is adjusted. Stainless steel flanges exhibit reduced wear compared to aluminum flanges and are designed to a low-tolerance fit for our retaining rings. The lack of a surface coating on the flanges minimizes dust or other particulates contaminating the surface of a lens.

RetroreflectorTape

The SPW501 stainless steel spanner wrench is designed for tightening Ø1/2" and Ø1" optical posts, and the SPW502, SPW503, and SPW504 spanner wrenches are designed for slotted locking rings, which are compatible with our adjustable lens tubes and couplers. The SPW504 spanner wrench can also be used to tighten the SM1.5 slotted locking ring included with the RSHA(/M) Adjustable Height Collar.

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SPW502, SPW503, and SPW504 Spanner WrenchesThe double-ended SPW502 Spanner Wrench is designed to tighten or loosen SM05 slotted locking rings (Item # SM05NT1) using the 3/4'' end of the wrench along with SM1 and C-Mount slotted locking rings (Item # SM1NT1 and CMNT1, respectively) using the 1¼'' end. The SPW503 Spanner Wrench is compatible with SM2 slotted locking rings (Item # SM2NT1). The SPW504 Spanner Wrench has a 1¾" end compatible with the SM1.5 slotted locking ring on the RSHA(/M) Adjustable Height Collar and a 2¼" end compatible with SM2NT1 SM2 Slotted Locking Rings. The hook on the end of each spanner wrench is designed to fit into a slot on the locking ring and provides leverage for tightening or loosening the locking ring. Please use minimal force when tightening to prevent binding due to overtightening.

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For customers with specialized retaining rings, adapters, or mounts, Thorlabs offers the SPW801 Adjustable Spanner Wrench, which features an adjustable spanning range as well as long blades that extend 1.6" (40.7 mm) from the body of the wrench.

These spanner wrenches are used to install and adjust our mounted aspheric lenses. Compatibility information is located on our aspheric lens webpages (see the table to the right). The SPW301 Spanner Wrench is additionally compatible with the retaining rings used in the S05LEDM LED Adapter and our laser diode collimation and focusing tubes.

The SPW403, SPW401, and SPW402 spanner wrenches are designed for use with our locking collars for M2.5 x 0.20, 3/16"-100, and 1/4"-80 adjuster screws, respectively. The SPW403 can also tighten or loosen the Zθ locking collars on our FiberPort collimators. The spanner wrenches are 0.75" (SPW403) or 1.50" (SPW401 and SPW402) long, have a knurled grip, and are constructed of 303 stainless steel. The hollow construction allows an adjuster to pass through the entire length of the spanner wrench.

What are retroreflectors used for

These high quality hands free most powerful magnifying glasses are lightweight and put no excess weight on the user. High Power Magnifying Glass-Page Magnifiers ...

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The reversible blades have a flat tip on one end intended for use with retaining rings, and an edge-offset fine point on the opposing end for adapters with holes. The blades extend 1.6" (40.7 mm) from the body of the wrench. Hence, compared to our cylindrical spanner wrenches sold above, the SPW801 is ideal for securing lenses with a high radius of curvature because the guide flanges on the cylindrical spanner wrenches may come into contact with the lens. To reverse the blades, a 0.050" (1.3 mm) balldriver or hex key is needed. Replacement blade pairs are available separately.

The SPB600 Spanner Wrench Bit Kit includes bits for SM05 (0.535"-40), SM1 (1.035"-40), and SM2 (2.035"-40) retaining rings; a driver handle with a 1/4" hex socket; and a carrying case. In addition, the case has a location to house the SM3 (3.035"-40) spanner bit available separately below.

Corner cube retroreflectors are designed to reflect any ray or beam entering the prism face, regardless of the prism’s orientation, back onto itself. A mirror will only do that at the normal angle of incidence. As a result, corner cube retroreflectors are ideal where precision alignment is difficult or time-consuming.

The spanner wrenches sold here feature a hollow construction that allows fine adjustment without obscuring the beam path. The guide flanges prevent optical surfaces from being scratched while the wrench is being inserted, and the knurled handles provide improved grip. Their compact 1" length allows them to be used in tight spaces.

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Spanner Bits allow SM-threaded retaining rings to be installed or adjusted without damaging optics that may be in place. They feature a standard 1/4" hex shank that allows them to be used with a manual driver handle, such as the one included in the kit below.

We also offer stainless steel spanner bits with a 1/4" hex shank for our SM05, SM1, SM1.5, SM2, and SM3 standards similar to our standard spanner wrenches. A kit is also offered that includes spanner bits for the SM05, SM1, and SM2 standards; a driver handle with a 1/4" hex socket; and a case. The SM1.5 and SM3 spanner bits are not included with this kit.

These spanner wrenches feature a hollow construction that allows thread adapters to be positioned without obscuring the beam path, enabling fine adjustment while a beam is being collimated. Their knurled handles provide improved grip, and their 1" length allows them to be used in tight spaces, such as within a 30 mm cage assembly.

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Each bit includes guide flanges that prevent most optical elements from being scratched while the bit is being inserted. When using lenses with high curvature, we recommend the SPW801 Adjustable Spanner Wrench sold below, which uses long blades that prevent scratches caused by the guide flanges.

From fast modifications to stock optics to custom designs, we can help you take your optical system from design to prototype to volume production. Contact us to get started today.

For retaining rings not covered by these cylindrical spanner wrenches, please see the SPW801 Adjustable Spanner Wrench sold at the bottom of the page. The SPW801 features an adjustable spanning range as well as long blades that extend 1.6" (40.7 mm) from the body of the wrench. Hence, for lenses with a high radius of curvature, we recommend using the SPW801 over the cylindrical spanner wrenches, whose guide flanges may come into contact with the lens.