MODIFICATION
66 -- 3D Laser Scanner
- Notice Date
- 7/16/2009
- Notice Type
- Modification/Amendment
- NAICS
- 334119
— Other Computer Peripheral Equipment Manufacturing
- Contracting Office
- Department of Commerce, National Institute of Standards and Technology (NIST), Acquisition Management Division, 100 Bureau Drive, Building 301, Room B129, Mail Stop 1640, Gaithersburg, Maryland, 20899-1640
- ZIP Code
- 20899-1640
- Solicitation Number
- SB1341-09-RQ-0367
- Archive Date
- 8/12/2009
- Point of Contact
- Joni L Laster, Phone: 301-975-8397, Mary Alice Powe, Phone: 301-975-8567
- E-Mail Address
-
joni.laster@nist.gov, maryalice.powe@nist.gov
(joni.laster@nist.gov, maryalice.powe@nist.gov)
- Small Business Set-Aside
- N/A
- Description
- The above subject solicitation is hereby amended to address vendor questions and incorporate changes to the technical specifications 1.Vendor Questions/Answers: 1.1 Question: Line Item 0001, specification #8 calls for the 3D scanners ability to scan a respirator mask. Does the mask have metal in it? Must the scanner be capable of scanning metal objects? Answer: The mask contains little metal (typically just the screws), but it has a large glassy face shield. It will likely be necessary to coat the face shield with a paint or powder to be able to see it with a laser, prospective quoters may assume that all surfaces are opaque and non-glossy. Should equipment be available that can actually see glass, the equipment would receive stronger consideration under technical capabilities. 1.2 Question: Line Item 0001, specification #7 calls for a required resolution of 0.1 mm and the accuracy is noted as 0.05 mm (1/2 the resolution). How can a 3D model be more accurate than the minimal level of image resolution it is capable of? Is the requirement for accuracy as written (0.05 mm) valid? Answer: Resolution and accuracy are two different things. Resolution is the minimum spacing between points in the direction perpendicular to the beam, and accuracy is the uncertainty in the direction parallel to the beam. If the user is scanning a plane or smoothly curving surface, the accuracy is much more critical than the resolution, which simply makes sure that the surface is fully covered with points. This is (pretty much) true for the head. However, the mask does have a lot of crevices and sharp changes in direction. 2. Line item 0001 is hereby amended to incorporate changes to the technical specifications as follows: 2.1 Specification 7 is hereby amended to change the accuracy to equal or exceed 0.1mm and shall read as follows: FROM: Resolution to equal or exceed 0.1mm, accuracy to equal or exceed 0.05mm, depth-of-field to equal or exceed 10 cm. Finer resolution and accuracy are preferred. (Note: in this case “exceed” means smaller than). TO: Resolution to equal or exceed 0.1mm, accuracy to equal or exceed 0.1mm, depth-of-field to equal or exceed 10 cm. Finer resolution and accuracy are preferred. (Note: in this case “exceed” means smaller than). Quoters are to describe the method for measuring accuracy. The due date for quotes (July 28, 2009 @ 3pm EST) remains unchanged.
- Web Link
-
FBO.gov Permalink
(https://www.fbo.gov/spg/DOC/NIST/AcAsD/SB1341-09-RQ-0367/listing.html)
- Place of Performance
- Address: 100 Bureau Drive, Gaithersburg, Maryland, 20899, United States
- Zip Code: 20899
- Zip Code: 20899
- Record
- SN01878582-W 20090718/090717001532-6e63c589a7f8ed8238c5dd4ce5424d0b (fbodaily.com)
- Source
-
FedBizOpps Link to This Notice
(may not be valid after Archive Date)
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