ok so I ended up making a set of bellows with 2 layers of BK5. No idea why it didn't work for Jim, but I found it bonds every bit as good as the HH-66. I'm not sure the size I ended up buying, I think it was the 2nd smallest size but I wish I had had more. "When the power to the controller is interrupted, critical outputs, such as door magnetic locks and laser interlocks, revert to a safe state: magnetic locks off, laser interlocks open," MacMullin says. I was quoted 178 for my Eastman View No.2 8x10 from Custom Bellows. "In situations where a room contains many lasers or laser systems, the ability to locally control each independent interlock becomes a useful option.". Yes, that did occurred to me. "Kentek laser eyewear combines or uses stand-alone several technologies," MacMullin says. Just a thought as I once got fabric for bellows in that way. Most are sandwichs. Instead of complaining, why don't you ask other bellows manufacturers if they could sell you their material? I though it was going to be a lot more. Have you looked here? Unfortunately, the size is too small for 8x10, but this material is perfect for anything 5x7 and smaller.

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https://www.facebook.com/pages/Laser-Focus-World/126899915297, https://www.linkedin.com/showcase/laser-focus-world. In this case, the contention was that it was a waste of time to find one material for all bellows.

unmounted thorlabs Available are laser safety accessories such as laser glasses, beam blocks, and shutters. Trying to find ONE usable fabric to make all bellows with is a waste of time and effort. single quantum well lasers [SQW-lasers], multiple quantum well lasers [MQW-lasers] or graded index separate confinement heterostructure lasers [GRINSCH-lasers] in AIIIBV compounds, e.g. 4). Gonna check that out today. Founded since 2000, Laser 21 is a Singapore-based distributor and supplier of lasers, photonics, ultra precision, optical metrology, motion control and imaging systems for commercial, industrial and scientific applications. I spread the glue with a brush, word of caution is that the glue has a high amount of solvent in it so as well as having good ventilation while using the glue, it will also cause the BK5 to 'pucker' if you apply too heavy a coat, test on some scraps before you go whole hog with it to get the feel of what it will be like. But since you won't supply any meaningful info or sources I guess I'll leave you to it. Keith did mention they use a fabric specially made for them when I asked. So paring down individual fabrics for individual cameras is putting the cart before the horse. First of all it's not always completely opaque, then there's the flame retardant which comes off as dust that you don't want to breath or have floating around in your camera. /Creator (Apache FOP Version 1.1) GPS, I think were all talking about conventional folding bellows. Just admit it, no one else does either.

Both need extremely thin material since they fold up very very tightly, but the stiffness needed for a 6.5x9cm KW Patent Etui is VERY different from that required for a 24x30cm plate camera! The clothing can be laundered in a conventional washing machine. Contention: A word difficult to understand for non-native English speakers, and also for the majority of native English speakers. Newport carries both polycarbonate and glass-type eyewear, Parker says.

:(. And what a difference does it make to contact a shop A or a shop B is also a mystery to me:), Jack Deardorff showed an 11x14 bellows taht was 5 feet long when extended, I have a snapshot of him holding one end above his head while holding the other with his feet. all cotten Duck cloth exterior, Black poster board stiffs, interior drapery blackouts and flat black cotten inners. There are some pockets that didn't really get saturated. Especially for a DIY project? Jon, .062 for just the cloth seems pretty thick to me. Anyway, I'm likely a freak in that regard. He said he uses a nylon fabric and the bellows are 100% usable and light "tight", You might find it easier and quite possibly cheaper to get in touch with customs bellows. :) I've seen bellows made from a lot of materials and I have no reason to believe BK5 isn't durable enough for a bellows. Thick fabrics cannot be used where small usable bellows draws are required. ;), What's wrong on using the correct material for different size of bellows?;). Seems really slick. tb4 reflectance thorlabs I'm just trying to - help. laser thorlabs blackout materials safety Contention: a point advanced or maintained in a debate or discussion.

I believe Ian Grant has some very good information on bellows construction, if he is about he may be able to give some tips. thorlabs coupled fiber submount diodes {{{;}#tp8_\. So why are you complaining that people who know about it try to steer you to the correct question in order to give you the correct answer? .. Had not thought of Yupo for my ribs. The polycarbonate is much lighter for users to wear, but sometimes cannot provide as much protection as glass. Anyway, I'm likely a freak in that regard. What's the best available bellows fabric. She said that she thought it would be 100% with a backup layer. Heavy duty curtain tracks can be supplied for smooth operation and for applications where the curtain needs to be suspended below the fixing points high-quality cubicle curtain track is available. A variety of laser-safety products includes personal gear, a vast array of other hardware, software, and audits and training. No luck, Keith from Custom Bellows said they can't re-sell the material. Every type of duvetyne/commando cloth I've ever used has been way too thick to make a bellows that properly compacts. Only problem was it was too thick so I couldn't fold up the camera. @~ (* {d+}G}WL$cGD2QZ4 E@@ A(q`1D `'u46ptc48.`R0) %PDF-1.4 One material worked perfectly well for all of them. He stated to make bellows for my Century Grand studio 11"x11"x 24" was $250. The Laser-Blocking Curtains Lastek supplies ismade by Lasermet using their specially-developed laser-blocking material.

You don't know where to get fabric. Is not trying to avoid that rude surprise, the point of this thread? I think they will friendly help you. thorlabs configured modular When you factor in the additional materials and the labor--getting a bellows made commercially starts to become a more attractive option. @Rt CXCP%CBH@Rf[(t CQhz#0 Zl`O828.p|OX MFk t,:.FW8c1L&9aX: rbl1 It is impossible to create one single piece of eyewear to cover the entire spectrum of lasers, so we offer many different choices for users to select the proper protection they require for the laser system." As described by MacMullin, laser barriers are used for safety of personnel in defined areas. gVyHK5*IOmY?PASH=b_KAA

FT3Yb`JqCS+qWm%N`^,vkA=v>_@T 8;b2i\)m.wTxWl;7&'wuSs#`?iy?a*bO}Q (hGRXwuI81y(9lp5)-Mn3nAyK_JTcgZY "xe;R`Q!]Y$r!_Vkf;w?G]s; combined with radiation therapy equipment, G01N 21/27 - Colour; Spectral properties, i.e. Leather Supply House Online Store (http://www.leathersupplyhouse.com/cgi-bin/store/commerce.cgi?product=rubber_cloth&cart_id=3479651.4981) also sells a variety of rubberized fabrics. Just that I might be hard pressed to find enough 'enthusiasts' to fill up an order for 250 meters of cloth. I don't find any contention in Ole's statement. DISCLAIMER: While we try to include information from the broadest possible number of companies that manufacture the products featured in our Photonics Products series, because of limited word count as well as deadlines that cannot always be met by requested contributors, we cannot possibly include all companies and regret if your company is not included in our series. Some laser-safety companies and their product types include: Beamstopr stock and custom curtains, screens, tents, enclosures, rooms, window coverings Lyndhurst, OHwww.beamstopr.com, Brandstrom Instruments shutters Ridgefield, CTwww.brandstrominstruments.com, Brinell Vision eyewear, filters Dundee, Scotlandwww.brinellvision.com, Cal-Av Labs signs Tucson, AZwww.cal-av.com, Edmund Optics eyewear, barriers, windows, window films, filters, shutters, signs Barrington, NJwww.edmundoptics.com, Honeywell Safety Products eyewear, barriers, windows, training Smithfield, RIwww.honeywellsafety.com, Kentek stock and custom rooms, barriers, curtains, interlock systems, windows, removable films, signs and labels, beam dumps and traps, infrared viewers and beam-finding detectors, training and audits, laser-safety glasses for pilots Pittsfield, NHwww.kenteklaserstore.com, Lasermet eyewear, curtains, screens, blinds, windows, enclosures, rooms, interlock systems, signs and labels, shutters, beam dumps, software, audio alerts Bournemouth, Englandwww.lasermet.com, Laservision eyewear, barriers, filters, windows and domes, signs and labels, goggles for pets, audits and training St. Paul, MNwww.lasersafety.com, Laser Safety Industries eyewear and face shields, windows, barriers, signs, labels, training, books and videos, standards Minneapolis, MNwww.lasersafetyindustries.com, Laser Safety Systems interlock modules, systems, and supplies Williamsburg, VAwww.lasersafetysystems.com, LVR Optical radiation assessment, training, software, and products for the laser entertainment industry, including a professional audience-scanning system to determine laser exposure levels Meathop, Cumbria, Englandwww.lvroptical.com, Melles Griot shutters Rochester, NYhttp://mellesgriot.com, Newport eyewear, curtains, windows, shutters Irvine, CAwww.newport.com, NmLaser shutters San Jose, CAhttp://nmlaser.com, NoIR LaserShieldspolymer, glass, and thin-film shields; eyewear; windowsSouth Lyon, MIwww.lasershields.com, OptoSigma eyewear, face shields, windows, films, curtains, panels Santa Ana, CAwww.global-optosigma.com, Plixo signs and labels Singaporewww.plixo.com.sg, Protect-Laserschutz eyewear, windows, curtains, panels, rooms, clothing, infrared viewers Nrnberg, Germanyhttp://protect-laserschutz.de, Rockwell Laser Industries eyewear, face shields, barriers, signs and labels, entryway control systems, hazard analysis software, training, standards Cincinnati, OHwww.rli.com, RT Technologies eyewear, blinds, curtains, and screens, filter windows, enclosures, interlock systems, shutters, signs and labels, product certification Dunwoody, GAwww.rtlasersafety.com, Thorlabs eyewear, curtains, barriers, screens, beam blocks and traps, shutters, blackout materials, signs Newton, NJwww.thorlabs.com, Vincent Associates shutters Rochester, NYwww.uniblitz.com. This was approx 1 meter by 2.5 meters and just perfect for the 5x7 bellows. There are simply different materials for different needs, depending on the bellows size. Finally, for complicated laser-safety situations, Kentek will combine these technologies in a single product.". %`cMMmS&Wh[b[c ,9&$4Ap["HC'8Cnwok2lS3b6+,Dw5Pv[,d>~v/5;vS@&)n#3Cx}fc^i\nrv;* &*EZvTX " Such signs, which are part of the product lines of many laser-safety companies, range from general, easily-seen warnings to more-specific descriptions of wavelengths, powers, or laser classes (see Fig. Laser-blocking blinds from RT Technologies (Dunwoody, GA), which protect employees and third parties from stray laser radiation, can be fitted to cover windows and doors with windows built in, says Melody Castleberry of RT Technologies. 3). Not that the quote was unreasonable. having both horizontal and vertical cavities having only vertical cavities, e.g. Some modern bellows materials are manufactured under great pressure and the sandwich behaves almost like a composite material - no need for card stiffeners any more. Apparently it is a synthetic fabric that s been treated to be lightproof. Thorlabs offers a variety of light accessories for labs. %PDF-1.3 Satisfaction guaranteed. Each module has a specific single function and is added to a main control cable to perform that function. GPS, so you are saying that a given manufacture of bellows, is using a different thickness material for an 8x10, and a different material for a 11x14, and a different material for 8x20 and a different material for 12x16 and a different material for 16x20? /N 3 Instead of saying the same thing over and over again, why don't you read the post from the person who followed your advice and was rebuffed? Protecting humans and their possessions from the light of all but low-power and low-energy lasers is done using barriers of all sorts, along with interlocks (sensing systems that make sure that, if a laser's enclosure is opened or otherwise breached, the laser is switched off before damage is done) and good procedure, including the use of warning signs. Two layers of BK5 are completely light tight and still very thin, but I haven't decided whether the reflectivity is a real problem. No idea, but it's a thin rubberized or vinyl-coated cloth--not sure why it would be worse than any other similar material. In curtain-style configurations, knuckle-style joints in the patented configuration ensure complete light blocking for curtain heights up to 10 ft. tall. If the overall room interlock is not armed, this module cannot arm. "Most common is likely our research customers, who are working and aligning lasers that could potentially damage their eyesight," he adds. In the past, I've been able to find thin blackout curtain (cloth on outside, rubberized interior) that glues well and is thin enough for an 8x10 bellows to fold. Indeed. beam block laser cage thorlabs mm system blocks traps You could ask Micro Tools as well. The weight of the material is 1.3 kg/m2. thorlabs masking Protect-Laserschutz (Nrnberg, Germany) is another company with a multiplicity of laser-safety products, but of particular note here is its Bodyguard line of laser-safety clothing. ?:0FBx$ !i@H[EE1PLV6QP>U(j I agree with Tim. Contact Custom Bellows in the UK and ask them if they can sell you their fabrics for your specific bellows. label laser material curtain thorlabs fabric AlGaAs-laser, H01S 5/40 - Arrangement of two or more semiconductor lasers, not provided for in groups, A61B 3/10 - Objective types, i.e. quantum optics or photonic crystals, H01S 3/00 - Lasers, i.e. While you may like your material on your camera, it is far, far from being "the best available bellows material". But lots of foldable cameras have just the one layer, often just of strong paper which has been prefolded - anything else will inhibit folding. For example, Kentek's Entry-Guard safety interlock system provides a fail-safe access control system, with the primary function of ensuring that unauthorized personnel are prohibited from areas where laser radiation may be present. screen viewing spectrum screens mountable thorlabs prism halogen dispersing 1 mounted created source using light The question is if it becomes brittle with age.

Laser-safety signs and labels are an essential part of any laser setup that may present hazards. The blinds are designed as a passive guarding system to block laser light from escaping the operating room, laboratory, or laser facility where Class 3B or Class 4 lasers are in use. optical table thorlabs accessories standing Both sides of the material will block laser radiation, but if the white side is used as the laser-blocking side a higher laser blocking specification is achieved making the curtain suitable forhigher powerlasers. Tom MacMullin, president of Kentek (Pittsfield, NH), a company that supplies a range of laser-safety equipment and services, describes the technical differences between the materials in his company's types of eyewear. Yupo: http://www.yupousa.com/paper/index.php. In your OP you didn't mention the size of bellows you want to have. They simply use different bellows materials with different material characteristic. I think Barry has some better suggestions. Thanks for pointing it out! It's very thin. Just seems extravagant when I know how to make them myself. However, I cannot find material this thin at my local fabric store anymore. Maybe if you asked Custom Bellows where they get their fabric that their source would sell you some quantity for you only? The Thorlabs BK5 cloth costs about $15/yard--even if you use two layers, the cost is reasonable. I found (but lost) a thread on another site that said to Google 'organ bellows'.

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