08-Optical Tables.pdf - Qioptiq Q-Shop

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Microbench Nanobench Tube System C Positioners Rail Systems Mounts and Posts Mirror Mounts Support Systems, Introduction Providing both vertical and horizontal vibrational isolation The performance of Optical Tables is determined by the performance characteristics of both their top structures and their supports, where the degree of vibrational isolation and the damping actions provided by the latter are the major determining factors. High degrees of vibrational isolation hinder transmission of building vibrations through table supports to their top structures. Strong damping actions rapidly damp out vibrations of Table Top structures. Truly effective vibration-isolation systems must provide both high degrees of vibrational isolation and strong damping actions in both vertical and horizontal planes. Isolating Optical Table Tops from floor vibrations is a complex problem, since the directions and amplitudes of floor vibrations vary with location throughout buil-dings. On lower floors, they will be predominantly in the vertical plane. On upper floors, the amplitudes of floor vibrations in the horizontal plane become progres sively worse from floor to floor. One figure of merit used in assessing the effectiveness of damping mechanisms is their resonant frequency. „Stiffer“ damping mechanisms have higher resonant fre quencies. Damping mechanisms damp vibrations star ting at a frequency 1.4 times their resonant frequency. LINOS Photonics and TMC have taken this into account in desig ning its Optical Table support systems, and can thus offer its customers the following unique combination of benefits: Design Features Table supporting structures consist of a number of posts, either free-standing or interconnected by tie-bars, and with or without vibration-isolation mechanisms incorporated in their columnar sections. The types of vibration-isolation systems required to afford Table Tops adequate vibrational isolation will depend upon the experiments planned and ambient conditions at intended installation sites. Four different types of support systems are available •• Without isolation system (rigid levelling stand) •• Passive isolators S •• Semi-active Gimbal Piston isolation system In addition to their outstanding performance, TMC‘s support systems provide users the further benefit of modularity. Any of our vibration-isolation systems may be readily replaced by, or converted into, any of the others whenever required by, e.g., more stringent demands on the accuracies of experimental results. Options, such as casters, may be field-retrofitted whenever needed. High Quality Selection The information needed for selecting suitable supporting structures are their load-bearing capacity and the desired working-surface height. The load capacity is the addition of the weight of the table and the maximum total weight to be carried by the Table Top multiplied with savety factor 2. Select the post size that provides the working height you need, taking into account the table thickness (has to be substracted). Ergonomic convention would dictate 910 mm from floor to Table Top surface. Rigid Stands Rigid stands provide no vibrational isolation. Table tops rest on supports whose heights may be adjusted over a 75 mm range, extending from 25 mm below their nominal heights, to 50 mm above their nominal heights. Rigid stands will be adequate for supporting relatively simple experimental setups that are insensitive to vibrations. Rigid stands are the preferred choice for our thinner (50 mm or 100 mm top thickness) Series 77 Optical Tables. The special modular design of LINOS and TMC support systems offers the following advantages: • Modular construction • Choice of several damping factors • Field retrofittability • Optional struts or footplates • Excellent vibrational isolation in both vertical and horizontal planes • Available with/without casters • Choice of several load-bearing capacities • Choice of working heights • Custom and OEM support systems Retrofits and upgrades can be carried out quickly and easily, because the standard support systems come equipped with all required bore holes and threads. 300 Phone numbers: US +1 585 223 2370 UK +44 2380 744 500 Singapore +65 6499 7766
Optical Tables S-Series Passive Vibration Isolators S-Series vibration isolators are air spring units having resonant frequencies ranging from 3 Hz to 5 Hz, varying with supported loads. Isolation Resonance Optical Tables Pressure (bar) S 50 S 150 S 300 Load (kg) Frequency (Hz) Typical S-Series isolator frequency response S-Series vibration isolators operating pressures and resonant frequencies Leveling range: max. ± 6 mm Vibration range: max. ±15 mm Operating pressure: S 50 and S 150 max. 5x10 5 Pa S 300 max. 6x10 5 Pa The pressure chambers of our S-Series vibration-isola tors are fabricated from an elastomer material reinforced with steel rings. Their well-balanced behavi ours in both vertical and hori zontal planes allow suppor ted loads to simply sink down onto their elastomer pressure cham bers without damaging them in the event of overloading or pressure loss. The graph above presents a typical frequency response curve for an S-Series vibration isolator. This exhibits a pronounced resonance peak, reaching a normalized response of 8 at 3 Hz. It should be noted that since their natural resonant frequencies are load-dependent, the curve shown above will not be entirely accurate in all cases. However, it can be stated that these units exhibit excellent vibration-isolation and damping characteristics at frequencies exceeding 5 Hz for loads falling within their specified load ranges. These types of vibration isolators are recommended for supporting less vibration-sensitive experimental setups under moderately favorable ambient conditions, such as those typically encountered in ground floor laboratories in buildings housing no vibrating machinery. Their use should be primarily restricted to supporting experimental setups whose total weights will remain roughly constant, so that their compressed heights will not require frequent readjustment. They are typically used to support medium-sized Series 77 Optical Table Tops having a thickness of roughly 100 mm to 200 mm. S-Series vibration isolators are available in three models covering three overlapping load ranges. Dimensional data on all three appears on section Accessories. Model Load range (kg) Weight (kg) S 50 12 to 50 0.55 S 150 35 to 150 0.6 S 300 70 to 300 1.5 Phone numbers: Germany +49 551 69 350 France +33 47 25 20 420 301
Page 1 and 2: The LINOS Optical Tables Optical Ta
Page 3 and 4: Optical Tables Optical Tables Techn
Page 5 and 6: Optical Tables Vibration-Isolation
Page 7 and 8: Optical Tables Sidewalls Sidewalls
Page 9 and 10: Optical Tables Selection Criteria T
Page 11 and 12: Optical Tables Quality Feature 5 Qu
Page 13 and 14: Optical Tables 77 Series CleanTop I
Page 15 and 16: Optical Tables Selection guide Plea
Page 23 and 24: Optical Tables CleanTop II Optical
Page 31: Optical Tables Lasershelf The Laser
Page 35 and 36: Optical Tables Vibrational isolatio
Page 37 and 38: Optical Tables 4-Post Systems with
Page 39 and 40: Optical Tables Without Isolation Sy
Page 41 and 42: Optical Tables Passive Isolators, S
Page 43 and 44: Optical Tables Pasive Isolators, S
Page 45 and 46: Optical Tables S-Series Vibration I
Page 47 and 48: Optical Tables A closer look To acc
Page 49 and 50: Optical Tables 10 10 0 0 Transmissi
Page 51 and 52: Optical Tables Active Piezoelectric
Page 53 and 54: Optical Tables Laboratory Tables, T
Page 55 and 56: Optical Tables High-Performance Lab
Page 57 and 58: Optical Tables Top size 30 in. x 48
Page 59 and 60: Optical Tables ClassOne Laboratory
Page 61 and 62: Optical Tables Articulated Arm Rest
Page 63 and 64: Optical Tables BenchTop Faraday Cag
Page 65 and 66: Optical Tables Custom Configuration
Page 67 and 68: Optical Tables Optical Tables Phone

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