Optical device having optical and mechanical properties

Patent metadata

Field	Value
Publication number	US-12174342-B2
Application number	US-202217828978-A
Country	US
Kind code	B2
Filing date	May 31, 2022
Priority date	Jan 30, 2018
Publication date	Dec 24, 2024
Grant date	Dec 24, 2024

Abstract

An optical device includes a substrate and a coating applied to the substrate, wherein the optical device has a first side exposed to an environment and a second side that is unexposed.

First claim

We claim:

1. An optical device applied to a LIDAR (“Light detection and ranging”) sensor, the optical device comprising:
a substrate having a first side positioned toward an environment and a second side positioned toward the LIDAR sensor;
a first coating applied to the first side of the substrate, the first coating being an antireflective coating or a protectant coating;
an electrical conducting coating present on the second side of the substrate, the electrical conducting coating being a heating element configured to increase the temperature of the optical device; and
a bandpass filter on the second side of the optical device;
wherein the optical device has a first side exposed to the environment and a second side that faces the LIDAR sensor.

2. The optical device of claim 1 , wherein the substrate includes plastics, synthetic sapphire, glass and synthetic diamond.

3. The optical device of claim 1 , wherein the optical device includes two or more substrates.

4. The optical device of claim 3 , wherein the two or more substrates are laminates.

5. The optical device of claim 1 , wherein the first coating is the antireflective coating.

6. The optical device of claim 1 , wherein the first coating is the protectant coating.

7. The optical device of claim 6 , further comprising an antireflective coating on the substrate, wherein the protectant coating is applied to the antireflective coating on the substrate.

8. The optical device of claim 7 , wherein the protectant coating and the antireflective coating on the substrate are both on the first side of the optical device.

9. The optical device of claim 7 , wherein the protectant coating is present on the first side of the optical device.

10. The optical device of claim 1 , further comprising a glare reducing coating.

11. The optical device of claim 10 , wherein the glare reducing coating is applied to the second side of the optical device.

12. The optical device of claim 11 , wherein the glare reducing coating and the electrical conducting coating are both on the second side of the optical device.

13. The optical device of claim 10 , wherein the bandpass filter is applied to the glare reducing coating, which is applied to the electrical conducting coating, which is applied to the substrate.

14. The optical device of claim 13 , wherein the bandpass filter, the glare reducing coating, and the electrical conducting coating are all on the second side of the optical device.

15. The optical device of claim 1 , wherein the glare reducing coating is a multilayer circular polarizer including a linear polarizer combined with a quarter wave optical retarder.

16. An optical device applied to a LIDAR (“Light detection and ranging”) sensor, the optical device comprising:
a substrate having a first side positioned toward an environment and a second side positioned toward the LIDAR sensor;
a first coating applied to the first side of the substrate, the first coating being an antireflective coating or a protectant coating;
an electrical conducting coating present on the second side of the substrate, the electrical conducting coating being a heating element configured to increase the temperature of the optical device and being transparent at a wavelength of operation of between 850 nm to 2000 nm; and
a glare reducing coating on the second side of the substrate, the electrical conducting coating being between the glare reducing coating and the substrate;
wherein the optical device has a first side exposed to the environment and a second side that faces the LIDAR sensor.

17. The optical device of claim 16 , wherein a bandpass filter is present on the second side of the optical device, the bandpass filter capable of blocking wavelengths from 400 to 850 nm.

18. The optical device of claim 17 , wherein the bandpass filter is between the glare reducing coating and the electrical conducting coating.

Assignees

• Viavi Solutions Inc

Inventors

• Zieba Jaroslaw
• Bilger Markus

Classifications

• G02B5/20

  Filters (polarising elements G02B5/30) · CPC title

• G02B1/11

  Anti-reflection coatings · CPC title

• G02B5/0825

  the reflecting layers comprising dielectric materials only · CPC title

• G02B1/16

  having an anti-static effect, e.g. electrically conducting coatings · CPC title

• G01S7/481

  Constructional features, e.g. arrangements of optical elements · CPC title