Changes between Initial Version and Version 1 of 4_Band_Photometer


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Timestamp:
Nov 8, 2013, 10:17:54 AM (6 years ago)
Author:
hazen
Comment:

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  • 4_Band_Photometer

    v1 v1  
     1[http://64.151.221.231/Biometer/album/ Photo Album]
     2
     3
     4This device is a 4 band radiometer used in the BU Remote Sensing Lab to compare the reflection spectrum observed at ground level with that seen in satellite photos. The EDF has performed extensive repair and modification on these units over the years.
     5
     6=== Completed ===
     7
     8* Send the tripod shaft collar mounts to the machine shop to be manufactured (will be done the week of 08/20/07)
     9* Send ND-filter plate and specialty thumb screws to machine shop to be manufactured (will be done the week of 08/20/07)
     10* Order ND-filters for the filter plate
     11* Order opal diffusers and screw on mounts for the filter plate
     12* Order bandpass filters for the detectors (waiting for shipment)
     13* Order shaft collar for the tripod mount
     14* Find, order, and replace LCD for the radiometer
     15* Make three 42 inch extension cables (FYI: detector cables are 45 inches)
     16* Replace internal bandpass filters for the detectors (waiting for shipment)
     17* Install and engrave ND-filters/opal diffusers (waiting for shipment and filter plate)
     18* Put everything together and test
     19* Placed order for 9 diffuser mounting tubes from Thorlabs
     20
     21=== Specifications ===
     22
     23''''PIN Diodes:''' 
     24
     25UDP '''PIN-10 DB/541''.  Specs found online:
     26
     27{{{
     28  Part Number = PIN10DB/541
     29  Manufacturer Name = UDT Sensors
     30  Description = General-Purpose Photodiode
     31  Semiconductor Material = Silicon
     32  Re Min.(A/W) Responsivity = 190m
     33  @Wavelength(m)(Test Condition) = 450n
     34  t(resp) Max.(s) Response Time = 500n
     35  NEP Max.(W/(Hz)1/2) = 47p
     36  C(T) Max. (F) Capacitance = 24n
     37  Status = Discontinued
     38  Package = N/A
     39
     40}}}
     41
     42=== Selected Parts (Confirmed with Dr. Strahler) ===
     43
     44* External Filter for Filter Plate: [http://www.thorlabs.com/thorProduct.cfm?partNumber=NE20A Absorptive ND Filter, Mounted, ND: 2.0 ±0.10]
     45* External Diffuser for Filter Plate: [http://www.edmundoptics.com/onlinecatalog/displayproduct.cfm?productID=1671 DIFFUSER OPAL 25mm DIA (Part: NT43-717)]
     46* External Mount for Diffusers: [http://www.thorlabs.com/thorProduct.cfm?partNumber=SM1L05 SM1 Lens Tube, 0.5" Long, One SM1RR Included (Part: SM1L05)]
     47* Shaft Collar for Tripod Mount: [http://www.staffordmfg.com/prodresults.asp?family=1&typeid=17&style=1&material=2&partnumber=8A310 Round Bore Shaft Collar ]
     48
     49
     50''''25mm Circular Bandpass Filters'''
     51
     52The three bands should be blue, red, and NIR. Best would be bands at:
     53
     54* 450 - 520 nm (blue)
     55 * [http://www.edmundoptics.com/onlinecatalog/displayproduct.cfm?productID=1936  FILTER BROAD 500NM 24.15MM D (Part: NT46-157)]
     56* 630 - 680 nm (red)
     57 * [http://www.edmundoptics.com/onlinecatalog/displayproduct.cfm?productID=1936  FILTER BROAD 650NM 24.15MM D (Part: NT46-160)]
     58* 760 - 900 nm (NIR)
     59 * [http://www.edmundoptics.com/onlinecatalog/displayproduct.cfm?productID=1924  FILTER BAND RT-830 1" DIA   (Part: NT46-443)]
     60
     61These match the bands of a satellite imager that we often use in remote sensing research. (we may not be able to get these bands specifically)
     62* [http://optical-components.globalspec.com/SpecSearch/Suppliers/Optics_Optical_Components/Optical_Components/Interference_Filters Bandpass Filter Search]
     63
     64
     65''''LCD Displays'''
     66
     67The [http://www.lxdinc.com/PDFs/H0043A.pdf LXD H0043A]
     68
     69
     70=== Documentation ===
     71* Bill of Materials [http://ohm.bu.edu/~pbohn/REPAIR__Radiometer/Documentation/BOM_Radiometer.xls (xls)]
     72* Filter Plate [http://ohm.bu.edu/~pbohn/REPAIR__Radiometer/Drawings/filter_plate.pdf (pdf)]
     73  [http://ohm.bu.edu/~pbohn/REPAIR__Radiometer/Drawings/filter_plate.dwg (dwg)]
     74* Collar Mount for detector [http://ohm.bu.edu/~pbohn/REPAIR__Radiometer/Drawings/collar_mount.pdf (pdf)]
     75  [http://ohm.bu.edu/~pbohn/REPAIR__Radiometer/Drawings/collar_mount.dwg (dwg)]
     76* Mounted Filter [http://ohm.bu.edu/~pbohn/REPAIR__Radiometer/Drawings/Mounted_Filter.pdf (pdf)]
     77  [http://ohm.bu.edu/~pbohn/REPAIR__Radiometer/Drawings/Mounted_Filter.dxf (dxf)]
     78
     79=== Reference Documents ===
     80
     81* [http://www.opticsinfobase.org/viewmedia.cfm?id=17209&seq=0 Interesting paper]
     82  UDP PIN-10 with op-amp readout
     83
     84* [http://www.osioptoelectronics.com/products/13-14_PhotoCondSer_OSIOpto.pdf Closest thing to
     85  a datasheet] I was able to find
     86
     87* [http://www.advancedphotonix.com/ap_products/standard_SingleElement.asp?from=leftnav Silicon Photonics]
     88 page (available from Digi-Key)
     89
     90=== Useful Links ===
     91
     92''''Optics and Filter Solutions:'''
     93
     94* [http://www.thorlabs.com/Navigation.cfm?Guide_ID=21 *** ThorLabs ***]
     95* [http://www.edmundoptics.com/onlinecatalog/Browse.cfm?categoryid=95 Edmund Optics]
     96* [http://www.novaphase.com/index.cfm?Preview=6 Nova Phase]
     97* [http://www.newport.com/Optical-Filters/141129/1033/catalog.aspx Newport]
     98* [http://rolynoptics.thomasnet.com/category/filters-and-accessories?&plpver=10 Rolyn Optics]
     99* [http://shop.mellesgriot.com/products/optics/optics.asp?TD=Y&plga=063504&CatID=102 Melles Griot]
     100* [http://www.optosigma.com/home.asp OptoSigma]
     101
     102
     103''''Possible Tripod Mounting Solutions:'''
     104
     105* [http://www.naturfotograf.com/tripod_collar_rev00.html Tripod Collar Blues]
     106* [http://www.canogacamera.com/detail.aspx?ID=4744 Canon Tripod Mount Ring]
     107* [http://cgi.ebay.com/Canon-Tripod-Mount-Ring-A-W-for-70-200mm-300mm-400mm_W0QQitemZ120118422772QQcmdZViewItem#ebayphotohosting Canon Tripod Mount Ring (close up)]
     108* [http://www.sigmaphoto.com/lenses/lenses_lens_details.asp?id=3248&navigator=1 Sigma Tripod Collar]
     109
     110
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     112