Changes between Initial Version and Version 1 of 4_Band_Photometer

Timestamp:

Nov 8, 2013, 10:17:54 AM (10 years ago)

Author:

Eric Hazen

Comment:

--

4_Band_Photometer

@@ +1 @@
+[http://64.151.221.231/Biometer/album/ Photo Album]
+
+
+This 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.
+
+=== Completed ===
+
+* Send the tripod shaft collar mounts to the machine shop to be manufactured (will be done the week of 08/20/07)
+* Send ND-filter plate and specialty thumb screws to machine shop to be manufactured (will be done the week of 08/20/07)
+* Order ND-filters for the filter plate
+* Order opal diffusers and screw on mounts for the filter plate 
+* Order bandpass filters for the detectors (waiting for shipment)
+* Order shaft collar for the tripod mount
+* Find, order, and replace LCD for the radiometer
+* Make three 42 inch extension cables (FYI: detector cables are 45 inches) 
+* Replace internal bandpass filters for the detectors (waiting for shipment)
+* Install and engrave ND-filters/opal diffusers (waiting for shipment and filter plate)
+* Put everything together and test
+* Placed order for 9 diffuser mounting tubes from Thorlabs
+
+=== Specifications ===
+
+''''PIN Diodes:'''  
+
+UDP '''PIN-10 DB/541''.  Specs found online:
+
+{{{
+  Part Number = PIN10DB/541
+  Manufacturer Name = UDT Sensors
+  Description = General-Purpose Photodiode
+  Semiconductor Material = Silicon
+  Re Min.(A/W) Responsivity = 190m
+  @Wavelength(m)(Test Condition) = 450n
+  t(resp) Max.(s) Response Time = 500n
+  NEP Max.(W/(Hz)1/2) = 47p
+  C(T) Max. (F) Capacitance = 24n
+  Status = Discontinued
+  Package = N/A
+
+}}}
+
+=== Selected Parts (Confirmed with Dr. Strahler) ===
+
+* External Filter for Filter Plate: [http://www.thorlabs.com/thorProduct.cfm?partNumber=NE20A Absorptive ND Filter, Mounted, ND: 2.0 ±0.10]
+* External Diffuser for Filter Plate: [http://www.edmundoptics.com/onlinecatalog/displayproduct.cfm?productID=1671 DIFFUSER OPAL 25mm DIA (Part: NT43-717)]
+* External Mount for Diffusers: [http://www.thorlabs.com/thorProduct.cfm?partNumber=SM1L05 SM1 Lens Tube, 0.5" Long, One SM1RR Included (Part: SM1L05)]
+* 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 ]
+
+
+''''25mm Circular Bandpass Filters'''
+
+The three bands should be blue, red, and NIR. Best would be bands at:
+
+* 450 - 520 nm (blue)
+ * [http://www.edmundoptics.com/onlinecatalog/displayproduct.cfm?productID=1936  FILTER BROAD 500NM 24.15MM D (Part: NT46-157)]
+* 630 - 680 nm (red)
+ * [http://www.edmundoptics.com/onlinecatalog/displayproduct.cfm?productID=1936  FILTER BROAD 650NM 24.15MM D (Part: NT46-160)]
+* 760 - 900 nm (NIR)
+ * [http://www.edmundoptics.com/onlinecatalog/displayproduct.cfm?productID=1924  FILTER BAND RT-830 1" DIA   (Part: NT46-443)]
+
+These 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)
+* [http://optical-components.globalspec.com/SpecSearch/Suppliers/Optics_Optical_Components/Optical_Components/Interference_Filters Bandpass Filter Search]
+
+
+''''LCD Displays'''
+
+The [http://www.lxdinc.com/PDFs/H0043A.pdf LXD H0043A]
+
+
+=== Documentation ===
+* Bill of Materials [http://ohm.bu.edu/~pbohn/REPAIR__Radiometer/Documentation/BOM_Radiometer.xls (xls)]
+* Filter Plate [http://ohm.bu.edu/~pbohn/REPAIR__Radiometer/Drawings/filter_plate.pdf (pdf)]
+  [http://ohm.bu.edu/~pbohn/REPAIR__Radiometer/Drawings/filter_plate.dwg (dwg)]
+* Collar Mount for detector [http://ohm.bu.edu/~pbohn/REPAIR__Radiometer/Drawings/collar_mount.pdf (pdf)]
+  [http://ohm.bu.edu/~pbohn/REPAIR__Radiometer/Drawings/collar_mount.dwg (dwg)]
+* Mounted Filter [http://ohm.bu.edu/~pbohn/REPAIR__Radiometer/Drawings/Mounted_Filter.pdf (pdf)]
+  [http://ohm.bu.edu/~pbohn/REPAIR__Radiometer/Drawings/Mounted_Filter.dxf (dxf)]
+
+=== Reference Documents ===
+
+* [http://www.opticsinfobase.org/viewmedia.cfm?id=17209&seq=0 Interesting paper]
+  UDP PIN-10 with op-amp readout
+
+* [http://www.osioptoelectronics.com/products/13-14_PhotoCondSer_OSIOpto.pdf Closest thing to
+  a datasheet] I was able to find
+
+* [http://www.advancedphotonix.com/ap_products/standard_SingleElement.asp?from=leftnav Silicon Photonics]
+ page (available from Digi-Key)
+
+=== Useful Links ===
+
+''''Optics and Filter Solutions:'''
+
+* [http://www.thorlabs.com/Navigation.cfm?Guide_ID=21 *** ThorLabs ***]
+* [http://www.edmundoptics.com/onlinecatalog/Browse.cfm?categoryid=95 Edmund Optics]
+* [http://www.novaphase.com/index.cfm?Preview=6 Nova Phase]
+* [http://www.newport.com/Optical-Filters/141129/1033/catalog.aspx Newport]
+* [http://rolynoptics.thomasnet.com/category/filters-and-accessories?&plpver=10 Rolyn Optics]
+* [http://shop.mellesgriot.com/products/optics/optics.asp?TD=Y&plga=063504&CatID=102 Melles Griot]
+* [http://www.optosigma.com/home.asp OptoSigma]
+
+
+''''Possible Tripod Mounting Solutions:'''
+
+* [http://www.naturfotograf.com/tripod_collar_rev00.html Tripod Collar Blues]
+* [http://www.canogacamera.com/detail.aspx?ID=4744 Canon Tripod Mount Ring]
+* [http://cgi.ebay.com/Canon-Tripod-Mount-Ring-A-W-for-70-200mm-300mm-400mm_W0QQitemZ120118422772QQcmdZViewItem#ebayphotohosting Canon Tripod Mount Ring (close up)]
+* [http://www.sigmaphoto.com/lenses/lenses_lens_details.asp?id=3248&navigator=1 Sigma Tripod Collar]
+
+
+
+