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Mirror alignment and/or figure sensing with surface mounted holographic optical elements

FIG. 1 shows, by way of example in the practice of the invention, a telescope 20 comprising a ...

Liquid crystal display device backlit by LED's coupled to printed circuit board

The present invention is to solve the problems in the conventional devices. The primary object of ...

Spectrometer with combined visible and ultraviolet sample illumination

Fluorescent whiteners are commonly used by manufacturers to make a product brighter or whiter The ...

Aspheric ophthalmic accommodating lens design for intraocular lens and contact lens

Based upon the foregoing, there is found to be a need to provide a multifocal lens configuration ...

Nondestructive dynamic controller for thermoplastic development

This invention lies in the general area of thermoplastic-photoconductive recording. In the U.S. Pat....

Stationary hologram scanner

The present invention has been achieved in view of the above described circumstances. It is a first ...

Process for applying a metallic image in register to a document of value

The instant invention is directed to a process for preventing the counterfeiting of valuable ...

Optical wavelength converter device

In view of the aforesaid drawbacks of the conventional optical wavelength converter devices, it is ...

Leak locating and mapping system and method

These and other objects are achieved by a leak locator constructed according to the present ...

Support assembly for multiple development stations in an electrostatographic reproduction apparatus

This invention is directed to a support assembly in an electrostatographic reproduction apparatus ...

Wide angle line scanner

Details

Inventors: McCracken, William L.; McDonald, Paul D.; Kirschner, Roger S.;
Assignee: Honeywell Inc. (Minneapolis, MN)
Primary Examiner: Arnold; Bruce Y.
Assistant Examiner: Phan; James
Attorney, Agent or Firm: Kinney & Lange

Apparatus for scanning a remote object with a radiation detector and which prevents narcissus, ghost and stray radiation effects by providing radiation blocking means positioned to intercept all but the desired paths between a remote object and the detector.

DETAILED DESCRIPTION The present invention overcomes the stray radiation, ghost imaging, and narcissus effects of the prior art by incorporating in the system at least two light absorbing baffles which are strategically placed at positions where they block any radiation coming in from a stray angle or a ghost angle, and block the narcissus radiation from the detector itself.

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