MODIFICATION
66 -- BLUE CHANNEL LENS ASSEMBLY
- Notice Date
- 3/6/2008
- Notice Type
- Modification
- NAICS
- 333314
— Optical Instrument and Lens Manufacturing
- Contracting Office
- NASA/Goddard Space Flight Center, Code 210.M, Greenbelt, MD 20771
- ZIP Code
- 20771
- Solicitation Number
- NNG08236396Q
- Response Due
- 3/13/2008
- Archive Date
- 3/6/2009
- Point of Contact
- Nadja Hardy, Contract Specialist for Simplified Acquisitions, Phone 301-286-3462, Fax 301-286-9159, Email nadja.hardy@nasa.gov - Cynthia L. White, Contracting Officer, Phone 301-286-3596, Fax 301-286-1720, Email Cynthia.L.White@nasa.gov
- E-Mail Address
-
Nadja Hardy
(nadja.hardy@nasa.gov)
- Small Business Set-Aside
- Total Small Business
- Description
- THIS NOTICE CONSTITUTES AMENDMENT NO. 002 TO THE COMBINED SYNOPSIS/RFQ FOR BLUE CHANNEL LENS ASSEMBLY. Companies shall acknowledge all amendment(s) in their quote. This notice serves as the official amendment to subject synopsis/RFQ and a written amendment will not be issued. The purpose of this amendment is to address questions raised by vendors and to change THICKNESS outlined in the attached specifications. The thickness is changed as follows: Surf 1- from 9.505 to 12.420 Surf 2- from 0.050 to 0.050 Surf 3- from 9.643 to 11.680 Surf 4- from 2.000 to 3.000 Surf 5- from 6.972 to 12.000 Surf 6- from 15.000 to 10.000 Surf 7- from 15.000 to 16.7 Surf 8- from 25.300 to 15.000 Surf 9- from 7.000 to 8.300 Surf 10- from 10.000 to 6.034 The following are questions raised by vendors and the answers: Q1) What is the quantity required? A1) Qty 1. Q2) Does NASA supply the lenses or are we responsible for that? If we are responsible, what is the coating requirement? A2) The vendor supplies the lenses, based on Optimax Corp. testplates ; a AR coating (on the last lens?) over the band 340-550 nm is desired; there is not a specific requirement to meet. Q3) In what environment will this lens be operating? Are there any temperature concerns, outgassing concerns, shock/vibration etc.? A3) Environment is standard laboratory environment (20 deg C, standard pressure); outgassing, etc. is not a consideration now since this is not a flight design. Q4) Are we required to provide an opto-mechanical design of the system? A4) Yes. Q5) Are there any mounting features that the lens barrel needs to mate to? A5) The barrel does not mount to anything else. Q6) What are the air space and decenter error specifications? The Excel sheet lists only Vendor defined ?Precision? Level. Honestly, our Precision level would me much tighter than almost every other company bidding on this job. A6) ALL tolerances are to be done according to the definition of ?precision? used by a company (i.e. there is no error budget). Q7) The Excel sheet also specifies not to cement any of the optics. Does this refer to not cementing the 2 doublets in the system? Or are all of the lenses not to be cemented to the barrel and should only be diameter mounted? A7) It is preferred that the lenses not be cemented; small air gaps can be made according to vendor capabilities. Q8) What are the performance specifications of the assembly? Is an MTF or interferometric test required? A8) The lens system is designed to compensate for other aberrations in the system, therefore the actual performance of the lens is ~3 waves at a wavelength of 425 nm; Other appropriate wavelengths can be used if desired (within the 340-550 nm band) NASA has chosen not to actually specify a performance requirement (for now), just that all mounting tolerances and thickness controls be ?precision?. Q9) Question is in regard to Lenses 2 and 3 and then Lenses 4 and 5. These lens pairs have been designed as doublets. I want to confirm that it is OK to cement the two lenses of each pair together. Specifically, Surface 4 and Surface 7 would have a transparent bond (Norland 61) to hold the lenses together. These doublets would then be aligned in the barrel without the use of cement. Lens prescription was entered into our CAD model and found two issues: Lens #1 can not be manufactured per these requirements. With a radius of curvature of 50.738 and a thickness of 9.505, the lens would form a knife edge at a semi-diameter less than 30mm. It does not agree with the drawing provided. The spacing between Lens 3 and Lens 4 is not sufficient. Based on the sags of each surface and the current air gap, the two lenses will crash into one another. A9) Correct, the drawing got updated but NOT the thickness values. We are attaching a revised set of numbers for thickness. This lens is being used as a ?learning? tool in our lab, we will be working on future versions in which the answers to these questions can be better detailed. The due date for receipt of offers is NOT extended. The due date for receipt of all offers is MARCH 13, 2008. Companies shall provide the information stated in the synopsis/RFQ posted on the NASA Acquisition Internet Service (NAIS) by 15:00PM ET on MARCH 13, 2008. Documents related to this procurement are available over the Internet. These documents reside on a World Wide Web (WWW) server which may be accessed using a WWW browser application. The Internet site, or URL, for the NASA/GSFC Business Opportunities home page is http://prod.nais.nasa.gov/cgi-bin/eps/bizops.cgi?gr=D&pin=51 NOTE: THIS NOTICE WAS NOT POSTED TO FEDBIZOPPS ON THE DATE INDICATED IN THE NOTICE ITSELF (06-MAR-2008); HOWEVER, IT DID APPEAR IN THE FEDBIZOPPS FTP FEED ON THIS DATE. PLEASE CONTACT fbo.support@gsa.gov REGARDING THIS ISSUE.
- Web Link
-
Click here for the latest information about this notice
(http://www.fbo.gov/spg/NASA/GSFC/OPDC20220/NNG08236396Q/listing.html)
- Record
- SN01526544-F 20080308/080306231738 (fbodaily.com)
- Source
-
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