Target System

• US 20080026346A1
• Filed: 05/18/2005
• Published: 01/31/2008
• Est. Priority Date: 05/19/2004
• Status: Abandoned Application

• Current Assignee: Saab AB
• Original Assignee: Saab AB
• Inventors: Fredriksson, Arnold, Holmer, Anna-Karin
• Application Number:
  US11/596,928
• Publication Number:
  US 20080026346A1
• Time in Patent Office: Days
• US Class Current: 434/22
• CPC Class Codes: F41G 3/2683 with reflection of the beam on the target back to the weapon

Abstract

A target system for a weapon effect simulation system. The target system includes a retro-reflecting prism having at least three back surfaces arranged to an incident simulation beam. At least one of the back surfaces includes a first, selectively reflecting layer arranged to reflect a simulation beam of a predetermined optical wavelength range and being substantially transparent to optical wavelengths outside the range. A second layer is arranged on the first layer. The second layer is arranged to receive beams transmitted through the first layer. The second layer includes a material having an index of refraction sufficiently high to avoid total internal reflection between the first and second layer within a predetermined range of incident angles.

Claims

1. A target system for a weapon effect simulation system, said target system comprising:

a retro-reflecting prism having at least three back surfaces arranged to retro-reflect an incident simulation beam and wherein at least one of the back surfaces comprises a first, selectively reflecting layer arranged to reflect a simulation beam of a predetermined optical wavelength range and being substantially transparent to optical wavelengths outside said range, wherein a second layer is mounted on the first layer, said second layer being arranged to receive beams transmitted through said first layer and said second layer being of a material having an index of refraction sufficiently high to avoid total internal reflection between said first and second layer within a predetermined range of incident angles.

2. The target system according to claim 1, wherein the second layer is arranged to absorb at least parts of the transmitted beam.

3. The target system according to claim 1, wherein the second layer is arranged to diffuse reflect at least parts of the transmitted beam.

4. The target system according to claim 1, wherein the second layer comprises an IR high-pass filter.

5. The target system according to claim 1, wherein the second layer comprises an IR band-pass filter.

6. The target system according to claim 1, wherein the index of refraction of the second layer is substantially equal to the index of refraction of the first layer.

7. The target system according to claim 1, wherein the first layer comprises a multi-layer dielectric coating.

8. The target system according to claim 1, further comprising:

an adhesive layer is interposed between the first and second layer.

9. The target system according to claim 8, wherein the index of refraction of the adhesive layer is substantially equal to the index of refraction of the first layer.

10. The target system according to claim 1, further comprising:

a third, wavelength selective reflective layer is mounted on top of the second layer.

11. A retro-reflecting prism, comprising:

at least three back surfaces arranged so as to retro-reflect an incident optical beam and wherein at least one of the back surfaces comprises a first, selectively reflecting layer arranged to reflect an optical beam of a predetermined optical wavelength range and being substantially transparent to optical wavelengths outside said range, wherein a second layer is arranged on the first layer, said second layer being arranged to receive optical beams transmitted through said first layer and said second layer being of a material having an index of refraction sufficiently high to avoid total internal reflection between said first and second layer within a predetermined range of incident angles.