Apparatus and method for precision immobilization of multiple cameras in a multi-camera system
An information handling system includes a multi-camera mounting apparatus. The multi-camera mounting apparatus accommodates a plurality of camera modules in order to capture a three dimensional image. The multi-camera mounting apparatus is comprised of a uni-body bracket made of a combination of materials that have a near net-zero thermal expansion in order to maintain the cameras' locations relative to each other. Additionally, the camera modules may be affixed to the multi-camera mounting apparatus using UV-activated adhesive.
1. A multi-camera mounting apparatus comprising:
a uni-body bracket fixedly attached to an information handling system at a plurality of attachment points;
the uni-body bracket comprised of a plurality of materials wherein a first material has either a negative or positive coefficient of thermal expansion and a second material has a coefficient of thermal expansion of the opposite sign of the first material;
the uni-body bracket containing a mounting zone for the mounting of a plurality of camera modules;
an elastomeric isolation mounting interface operatively coupled to at least one attachment point, wherein affixing the multi-camera mounting apparatus with the plurality of camera modules to the information handling system is accomplished via the elastomeric isolation mounting interface at the attachment point.
2. The multi-camera mounting apparatus of claim 1 , wherein the mounting zone includes a pocket with an aperture for a camera.
3. The multi-camera mounting apparatus of claim 1 , wherein the mounting zone includes a pocket with glue channels.
4. The multi-camera mounting apparatus of claim 1 , wherein the plurality of materials includes aramid.
5. The multi-camera mounting apparatus of claim 1 , wherein the plurality of materials of the uni-body bracket are layered flat-side facing.
6. The multi-camera mounting apparatus of claim 5 , wherein for each dimension of the uni-body bracket the plurality of materials are arranged such that two pieces of the first material overlap a single piece of the second material.
7. The multi-camera mounting apparatus of claim 1 , wherein the second material is interspersed within the first material of the uni-body bracket.
8. The multi-camera mounting apparatus of claim 7 , wherein the first material and the second material have a combined near net-zero thermal expansion.
9. A method for manufacturing an information handling system with a multi-camera system comprising:
affixing a plurality of camera modules to a multi-camera mounting apparatus by bonding with a UV-activated adhesive wherein the multi-camera mounting apparatus comprises a uni-body bracket comprised of a plurality of materials including a first material and a second material wherein the coefficient of thermal expansion of the second material has the opposite sign of the first material; and
affixing the multi-camera mounting apparatus with the plurality of camera modules to the information handling system via elastomeric isolation mounting at attachment points.
10. The method of claim 9 , wherein the first material and the second material have a combined near net-zero thermal expansion.
11. The method of claim 9 , wherein affixing the plurality of camera modules to a multi-camera mounting apparatus by bonding with UV-activated adhesive comprises:
aligning the camera modules to targets; and
curing the UV-activated adhesive with UV light exposure.
12. The method of claim 9 , wherein the uni-body bracket of the multi-camera mounting apparatus contains mounting zones for the mounting of a plurality of camera modules wherein the mounting zones include a pocket having an aperture for a camera and at least one glue channel.
13. The method of claim 9 , wherein the plurality of materials of the uni-body bracket of the multi-camera mounting apparatus includes aramid.
14. The method of claim 9 , wherein the first and second materials of the uni-body bracket are layered flat-side facing.
15. The method of claim 9 , wherein the multi-camera mounting apparatus is comprised of straight rods.
16. An information handling system comprising:
a display screen to display an image;
a processor to communicate with the display screen;
a plurality of camera modules; and
a multi-camera mounting apparatus comprised of a uni-body bracket comprised of a plurality of materials including a first material and a second material having a combined reduced thermal expansion wherein the coefficient of thermal expansion of the second material has the opposite sign of the first material and wherein the plurality of materials of the uni-body bracket includes aramid and Invar steel.
17. The information handling system of claim 16 , wherein the uni-body bracket of the multi-camera mounting apparatus contains mounting zones for the mounting of a plurality of camera modules wherein the mounting zones include a pocket having an aperture for a camera and at least one glue channel.
18. The information handling system of claim 16 , wherein the camera modules are affixed to the multi-camera mounting apparatus by bonding with UV-activated adhesive.
19. The information handling system of claim 18 , wherein the camera modules were aligned to targets prior to the UV-activated adhesive being cured.
20. The information handling system of claim 16 , wherein for each dimension of the uni-body bracket the plurality of materials are arranged such that two pieces of the first material overlap a single piece of the second material.