TRANSPARENT DISPLAY WITH EYE PROTECTION

• US 20170242244A1
• Filed: 02/24/2016
• Published: 08/24/2017
• Est. Priority Date: 02/24/2016
• Status: Active Grant

• Current Assignee: L3 Technologies, Inc. (L3Harris Technologies, Inc.)
• Original Assignee: L-3 Communications Corporation (L3Harris Technologies, Inc.)
• Inventors: O'CONNELL, Danny J., MCDAVITT, Daniel L., PARKER, James S., TRIPATHI, Sanjay
• Granted Patent: US 10,955,664 B2
• Time in Patent Office: Days
• CPC Class Codes: F41H 11/00 Defence installations; Defence devices constructional aspects see Section E, e.g. air-raid shelters E04H9/04; protective arrangements for buildings E04B1/92; extinguishing or preventing the spread of fire from, incendiary bombs A62C3/06; dynamic armour F41H5/007; ballistically deployed systems for restraining persons or animals F41H13/0006; electronic countermeasures G01S
• CPC Class Codes: F41H 13/0056 for blinding or dazzling, i.e. by overstimulating the opponent's eyes or the enemy's sensor equipment
• CPC Class Codes: G02B 27/0101 characterised by optical features G02B27/0172 takes precedence
• CPC Class Codes: G02B 27/0103 comprising holographic elements
• CPC Class Codes: G02B 5/203 having holographic or diffractive elements diffraction gratings per se G02B5/18; holographic elements per se G02B5/32; generating the spectrum using diffraction elements G01J3/18
• CPC Class Codes: G02B 5/26 Reflecting filters G02B5/28 takes precedence
• CPC Class Codes: G02B 5/32 Holograms used as optical elements
• CPC Class Codes: G02F 1/3501 Constructional details or arrangements of non-linear optical devices, e.g. shape of non-linear crystals
• CPC Class Codes: G02F 1/3503 Structural association of optical elements, e.g. lenses, with the non-linear optical device
• CPC Class Codes: G02F 1/3523 Non-linear absorption changing by light, e.g. bleaching
• CPC Class Codes: G02F 2203/52 Optical limiters
• CPC Class Codes: G03B 21/56 Projection screens
• CPC Class Codes: G03B 21/60 characterised by the nature of the surface
• CPC Class Codes: H04N 9/3161 using laser light sources using laser beams scanning the display screen H04N9/3129

Abstract

A transparent display provides eye protection from lasers and other high intensity light sources. The transparent display allows users to view objects clearly through the display while also presenting text, graphics or video on the display surface. Simultaneously, the display assembly comprises a component that provides eye protection against high power radiation sources. The transparent display with eye protection provides both protection from high power light sources and an additional cockpit display surface for presentation of information including graphical images, symbology, video, text, and other data.

Claims

1. A transparent eye-protective display system, comprising:

an optical element including a first side and a second side, wherein the first side is configured to reflect, absorb, attenuate, or deflect incident light at one or more undesired wavelengths from one or more high intensity light sources away from the display system, and the second side is configured to display images.

3. The transparent eye-protective display system of claim 1, wherein the first side faces away from a user to reflect, absorb, attenuate, or deflect the incident light at the undesired wavelengths away from the user, and the second side faces the user to display images to the user.

4. The transparent eye-protective display system of claim 1, wherein the high intensity light sources include lasers and other high power coherent radiation sources.

5. The transparent eye-protective display system of claim 1, wherein the high intensity light sources includes high power non-coherent light sources.

6. The transparent eye-protective display system of claim 1, wherein the optical element includes a holographic diffusing element, a notch filter with a projection screen, or a grating.

9. The transparent eye-protective display system of claim 1, wherein the first side includes passive protective coatings.

10. The transparent eye-protective display system of claim 1, wherein the first side is tuned to reflect a specific wavelength or to reflect, absorb, attenuate, or deflect broad band high intensity light.

11. The transparent eye-protective display system of claim 9, wherein the passive protective coating includes a linear optical power limiter.

2. The transparent eye-protective display system, wherein the second side is configured to display an image reflected from a projector.

7. The transparent eye-protective display system of claim 2, wherein the projector projects red, green and blue lower power laser light at the specific wavelength, towards the second side of the optical element which is tuned to reflect red, green, and blue light of the specific wavelength.

8. The transparent eye-protective display system of claim 2, wherein the second side is coated with a transparent holographic pattern to reflect the light from the projector.

12. The transparent eye-protective display system of claim 8, wherein the passive protective coating includes a non-linear power limiter.

13. A transparent eye-protective display system, comprising:

an optical element configured to reflect, absorb, attenuate, or deflect incident light at one or more undesired wavelengths from one or more high intensity light sources away from the display system; and

a transparent display element attached to the optical element, wherein the transparent display element is configured to display images.

14. The transparent eye-protective display system of claim 13, wherein the optical element is disposed on a side of the display system facing away from the user to reflect, absorb, attenuate, or deflect the incident light at the undesired wavelengths away from the user, and the transparent display element is disposed on a side of the display system facing the user to display images to the user.

15. The transparent eye-protective display system of claim 13, wherein the transparent display element includes a screen tuned to the wavelength of a projector that projects light toward the transparent display element, wherein the screen is configured to display images from the projector.

16. The transparent eye-protective display system of claim 13, wherein the display element includes an active matrix based transparent display configured to display images.

17. The transparent eye-protective display system of claim 13, wherein the optical element includes an active protective component.

18. The transparent eye-protective display system of claim 17, wherein the active protective component includes a sensor that senses the wavelength and/or intensity of light and the optical element responds by absorbing, reflecting, attenuating, or deflecting the incoming light.

19. The transparent eye-protection display system of claim 13, wherein the optical element includes a passive protective component.

20. The transparent eye-protective display system of claim 13, wherein the high intensity light sources include at least one of lasers, other high power coherent radiation sources, and high power non-coherent light sources.