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Purchase of Custom Modified Photocathods Module to Upgrade Existing Adaptive Optics Instrument

National Eye Institute / National Institute of Health


Announcement/Number:  EE19-5654

Post Date: July 24, 2019

Closing Response Date: August 6, 2019

Proposed Award Date: August 9, 2019

Project Title: Purchase of Custom modified photocathods module to upgrade existing adaptive optics instrument

Contracting Office: National Eye Institute, Building 31, Room 6A52

Contact Point/Contracting Officer/Contract Specialist: Elaine Estrella,

North American Classification System (NAICS) Code (include): 334516

Size Standard: 1000

Classification Code: Analytical Laboratory Instrument Manufacturing

Offerors must quote on all items to be eligible for award. The Government will award a contract resulting from this solicitation to the responsible offeror whose offer conforming to the solicitation.


Product Requirement / Specification

Part Number

Description of Requirement



Photosensor Module with PMT Photocathode: Extended red GaAsP



Photosensor Module with PMT Photocathode: InGaAs



Heatsink With Fan



Shipping / Handling


Delivery Location:

NEI Laboratory / NIH
10 Center Drive
BLDG 10 RM 10N109
Bethesda, MD 20892



Payment will be made 30 days after internal receiving in NIH system.


Award Type     

Firm Fixed


Basis of Award

Product Specification must match requirement.

The Hamamatsu H7422A-40-Y001 and H7422A-40-Y002 are special photocathodes that have extended red GaAsP and InGaAs detectors which are needed for a specific scanning laser ophthalmoscope application (780nm-860nm, 50nW-500nW) that is currently implemented in the National Eye Institute Eye Clinic. The sensor is embedded in a housing module that is currently in use with a custom built adaptive optics scanning laser ophthalmoscope housed in the NEI eye clinic that was initially deployed under contract HHSN263201400011C. Under this contract the H7422A module was utilized. These new modules are needed to upgrade the performance of this existing instrument to achieve new research targets. It is imperative that the same exact module be used to maintain instrument compatibility.  We have to date invested thousands of hours of time into testing and characterizing the performance of sensors within this housing module. Selection of any other housing module would likely result in long delays resulting from retesting of products from other suppliers. The Extended red GaAsP and InGaAs photocathodes are special detectors within this housing module which are only available directly through Hamamatsu due to the fact that this is a prototype product under development. There are no other commercial vendors or distributors that can provide these new photocathodes. Therefore, for the reasons detailed above, there is only one responsible source and no other suppliers or services will satisfy (FAR 6.302-1).

Closing Statement: This notice is not a request for competitive proposals.  However, interested parties may identify their interest and capability to respond to this notice.  Responses to this notice shall contain sufficient information to establish the interested parties’ bona-fide capabilities for fulfilling the requirement and include: unit price, list price, shipping and handling costs, the delivery period after contract award, the prompt payment discount terms, the F.O.B. Point (Destination or Origin), the Dun & Bradstreet Number (DUNS), the Taxpayer Identification Number (TIN), and the certification of business size. All offerors must have an active registration in the System for Award Management (SAM)

A determination by the Government not to compete this proposed action based upon responses to this notice is solely within the discretion of the Government. The information received will normally be considered solely for the purposes of determining whether to proceed on a non-competitive basis or to conduct a competitive procurement.

All responses must be received by August 6, 2019 and must reference number EE19-5654Responses may be submitted electronically to or hand delivered in person. Fax responses will not be accepted.


“All responsible sources may submit a bid, proposal, or quotation which shall be considered by the agency.”

Last updated: August 15, 2019