Transparent display with eye protection

Patent metadata

Field	Value
Publication number	US-10955664-B2
Application number	US-201615052154-A
Country	US
Kind code	B2
Filing date	Feb 24, 2016
Priority date	Feb 24, 2016
Publication date	Mar 23, 2021
Grant date	Mar 23, 2021

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.

First claim

What is claimed is:

1. A transparent eye-protective display system for a vehicle window, the system comprising:
an optical element of the vehicle window, the optical element including a first side and a second side, wherein the first side is configured to face outward from a vehicle 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 face inward into the vehicle to display images, wherein:
the optical element includes one of a holographic diffusing element and a grating; and
wherein the first side includes a passive protective coating comprising one of a linear optical power limiter and a non-linear optical power limiter.

2. The transparent eye-protective display system of claim 1 , wherein the second side is configured to display an image reflected from a projector.

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 include high power non-coherent light sources.

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

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

8. 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.

9. A transparent eye-protective display system for a vehicle window, the system, comprising:
an optical element of the vehicle window, the optical element configured to face outward from a vehicle 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, wherein the optical element includes one of a holographic diffusing element and a grating;
a transparent display element attached to the optical element and configured to face inward into the vehicle, wherein the transparent display element is configured to display images; and
wherein the optical element includes a passive protective coating comprising one of a linear optical power limiter and a non-linear optical power limiter.

10. The transparent eye-protective display system of claim 9 , wherein the optical element is disposed on a side of the display system facing away from a 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.

11. The transparent eye-protective display system of claim 9 , wherein the transparent display element includes a screen tuned to a wavelength of a projector that projects light toward the transparent display element, wherein the screen is configured to display images from the projector.

12. The transparent eye-protective display system of claim 9 , wherein the display element includes an active matrix based transparent display configured to display images.

13. The transparent eye-protective display system of claim 9 , wherein the optical element includes an active protective component.

14. The transparent eye-protective display system of claim 13 , wherein the active protective component includes a sensor that senses the undesired wavelength and/or intensity of incoming light and the optical element responds by absorbing, reflecting, attenuating, or deflecting the incoming light.

15. The transparent eye-protection display system of claim 9 , wherein the optical element includes a passive protective component.

16. The transparent eye-protective display system of claim 9 , 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.

Assignees

• L3 Tech Inc

Inventors

• O'Connell Danny J
• Mcdavitt Daniel L
• Parker James S
• Tripathi Sanjay

Classifications

• H04N9/3161

  using laser light sources (using laser beams scanning the display screen H04N9/3129) · CPC title

• F41H11/00

  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 title

• G02F1/3503

  Structural association of optical elements, e.g. lenses, with the non-linear optical device · CPC title

• G02B27/0103

  comprising holographic elements · CPC title

• G03B21/56

  Projection screens · CPC title