Impact resistant heated window mount for thermal camera

Patent metadata

Field	Value
Publication number	US-12253740-B2
Application number	US-202017114808-A
Country	US
Kind code	B2
Filing date	Dec 8, 2020
Priority date	Dec 8, 2020
Publication date	Mar 18, 2025
Grant date	Mar 18, 2025

Abstract

The present disclosure relates to optical systems, vehicles, and methods for providing improved mechanical performance of a camera and corresponding optical elements. An example optical system includes an outer housing and an inner support member. The optical system also includes an optical window coupled to the outer housing and the inner support member. The optical window is configured to be temperature-controllable. The optical system also includes a camera coupled to the inner support member. The camera is optically coupled to the optical window. Additionally, the outer housing, the optical window, and the camera are configured to be impact resistant.

First claim

What is claimed is:

1. An optical system comprising:
an outer housing;
an inner support member;
an optical window coupled to the outer housing and the inner support member, wherein the optical window is configured to be temperature-controllable;
a window heater element, wherein the window heater element comprises a flexible heater device, and wherein the flexible heater device is disposed on an inner surface of the optical window; and
a camera coupled to the inner support member, wherein the camera is optically coupled to the optical window, wherein the outer housing, the optical window, and the camera are configured to be impact resistant,
wherein an impact force applied to the optical window is distributed via a primary load path and a secondary load path, wherein the primary load path comprises the optical window and the outer housing, wherein the secondary load path comprises the optical window and the inner support member.

2. The optical system of claim 1 , wherein the optical window, outer housing, and inner support member are configured such that the primary load path dissipates impact forces up to a threshold energy value and the secondary load path dissipates excess impact forces above the threshold energy value.

3. The optical system of claim 1 , wherein the camera comprises a thermal infrared camera.

4. The optical system of claim 3 , wherein the inner support member comprises a thermal baffle and a preload foam.

5. The optical system of claim 1 , wherein the window heater element is disposed between the optical window and the inner support member.

6. The optical system of claim 5 , wherein the window heater element is coupled to the inner support member.

7. The optical system of claim 6 , further comprising at least one of a temperature sensor or a humidity sensor.

8. The optical system of claim 7 , wherein the temperature sensor or the humidity sensor is disposed proximate to the inner support member.

9. The optical system of claim 7 , further comprising a controller, wherein the controller comprises at least one processor and a memory, wherein the at least one processor is configured to execute instructions stored in the memory so as to carry out operations, the operations comprising:
receiving information indicative of at least one of a temperature or a humidity; and
adjusting, based on the received information, a desired temperature of the flexible heater device.

10. A vehicle comprising:
an optical system comprising:
an outer housing;
an optical window coupled to the outer housing, wherein the optical window is configured to be temperature-controllable;
a window heater element, wherein the window heater element comprises a flexible heater device, and wherein the flexible heater device is disposed on an inner surface of the optical window; and
a camera coupled to an inner support member and optically coupled to the optical window, wherein the outer housing, the optical window, and the camera are configured to be impact resistant,
wherein an impact force applied to the optical window is distributed via a primary load path and a secondary load path, wherein the primary load path comprises the optical window and the outer housing, wherein the secondary load path comprises the optical window and the inner support member.

11. The vehicle of claim 10 , wherein the optical window, outer housing, and inner support member are configured such that the primary load path dissipates impact forces up to a threshold energy value and the secondary load path dissipates excess impact forces above the threshold energy value.

12. The vehicle of claim 10 , wherein the camera comprises a thermal infrared camera.

13. The vehicle of claim 12 , wherein the inner support member comprises a thermal baffle and a preload foam.

14. The vehicle of claim 10 , wherein the window heater element is disposed between the optical window and the inner support member.

15. The vehicle of claim 14 , wherein the window heater element is coupled to the inner support member.

16. The vehicle of claim 15 , further comprising at least one of a temperature sensor or a humidity sensor.

17. The vehicle of claim 16 , wherein the temperature sensor or the humidity sensor is disposed proximate to the inner support member.

18. The vehicle of claim 16 , further comprising a controller, wherein the controller comprises at least one processor and a memory, wherein the at least one processor is configured to execute instructions stored in the memory so as to carry out operations, the operations comprising:
receiving information indicative of at least one of a temperature or a humidity; and
adjusting, based on the received information, a desired temperature of the flexible heater device.

Assignees

• Waymo Llc

Inventors

• Sharma Shashank
• Last Matthew

Classifications

• B60S1/026

  using electrical means · CPC title

• G01J5/08

  Optical arrangements · CPC title

• G01J5/0205 Primary

  Mechanical elements; Supports for optical elements · CPC title

• G01J5/061

  by controlling the temperature of the apparatus or parts thereof, e.g. using cooling means or thermostats · CPC title

• G01J2005/063

  Heating; Thermostating · CPC title