Digital adaptive optics encoder module

Patent metadata

Field	Value
Publication number	US-12379575-B2
Application number	US-202217873333-A
Country	US
Kind code	B2
Filing date	Jul 26, 2022
Priority date	Jul 26, 2022
Publication date	Aug 5, 2025
Grant date	Aug 5, 2025

Abstract

A digital adaptive optics encoder module includes an input mounting flange, a collimating lens, a bandpass filter, digital adaptive optic elements, refocusing lens, an output mounting flange, and a housing. The input mounting flange is capable of attaching to a telescope. The collimating lens is capable of expanding light from a target to fill a plurality of primary apertures. The bandpass filter has a bandwidth ranging from about 40 nm to about 100 nm. The digital adaptive optic elements include the plurality of primary apertures, an optical spreader, a focusing optic, and a detector. The refocusing lens is capable of refocusing an output from the digital adaptive optic elements onto a sensor plane. The output mounting flange is capable of attaching to an output connection. The housing encloses all of the interior components of the digital adaptive optics encoder module.

First claim

What is claimed is:

1. A digital adaptive optics encoder module, comprising:
an input mounting flange, wherein the input mounting flange is a mount capable of attaching to a telescope;
a collimating lens, wherein the collimating lens is capable of expanding light from a target to fill a plurality of primary apertures;
a bandpass filter having a bandwidth ranging from about 40 nm to about 100 nm;
digital adaptive optic elements, wherein the digital adaptive optic elements include:
i) the plurality of primary apertures for receiving light from the collimating lens;
ii) an optical spreader for spreading apart the light passing through the primary apertures by at least a factor of two times a baseline separation of the primary apertures, wherein the optical spreader includes a plurality of actuators for modifying path lengths within the digital adaptive optic elements through the primary apertures to a detector;
iii) a focusing optic for focusing the light from the optical spreader at the detector; and
iv) the detector for detecting an image of the target with the light from the focusing optic;

refocusing lens, wherein the refocusing lens is capable of refocusing an output from the digital adaptive optic elements onto a sensor plane;
output mounting flange, wherein the output mounting flange is a mount capable of attaching to an output connection; and
a housing, wherein the housing encloses the collimating lens, the bandpass filter, the digital adaptive optic encoder elements, and the refocusing lens.

2. The digital adaptive optics encoder module of claim 1 further including a first relay lens and a second relay lens, wherein the first relay lens is located between the input mounting flange and the collimating lens and the second relay lens is located between the refocusing lens and the output mounting flange.

3. The digital adaptive optics encoder module of claim 2 , wherein the first relay lens adjusts a scale of an input aperture diameter by demagnifying the target to fill the digital adaptive optic elements and the second relay lens matches or exceeds the input aperture diameter of the digital adaptive optics encoder module.

4. The digital adaptive optics encoder module of claim 1 , wherein the input mounting flange is attached to the telescope is a telephoto zoom lens that has a focal length ranging from about 900 mm to about 2100 mm.

5. The digital adaptive optics encoder module of claim 1 , wherein the output mounting flange is attached to the output connection that includes a processing module and an output connection module selected from the group consisting of a camera module, a data acquisition module, a sensor module, a focusing element module, and combinations thereof.

6. The digital adaptive optics encoder module of claim 5 , wherein the output connection generates a digital image of the target.

7. The digital adaptive optics encoder module of claim 1 , wherein the output mounting flange is attached to a sensor module that records a raw intensity of the target and stores the raw intensity of the target as data.

8. The digital adaptive optics encoder module of claim 1 , wherein the refocusing lens is a 1-inch diameter plano-concave lens with a −75 mm focal length.

9. A digital adaptive optics encoder module, comprising:
a telescope for receiving target light;
an input mounting flange attached to the telescope;
a collimating lens, wherein the collimating lens is capable of expanding the target light to fill a plurality of primary apertures;
a bandpass filter, having a bandwidth ranging from about 40 nm to about 100 nm, for receiving the expanded target light and outputting bandpass light;
digital adaptive optic elements for receiving bandpass light, wherein the digital adaptive optic elements include:
i) the plurality of primary apertures for receiving the bandpass light;
ii) an optical spreader for spreading apart the light passing through the primary apertures by at least a factor of two times a baseline separation of the primary apertures, wherein the optical spreader includes a plurality of actuators for modifying path lengths within the digital adaptive optic elements through the primary apertures to a detector;
iii) a focusing optic for focusing the light from the optical spreader at the detector; and
iv) the detector for detecting an image of the target from the focusing optic;

a refocusing lens, wherein the refocusing lens is capable of refocusing an output from the digital adaptive optic elements onto a sensor plane;
an output mounting flange, wherein the output mounting flange is a mount capable of attaching to an output connection; and
a housing, wherein the housing encloses the collimating lens, the bandpass filter, the digital adaptive optic encoder elements, and the refocusing lens.

10. The digital adaptive optics encoder module of claim 9 , further including two relay lens systems, wherein a first relay lens system is located between the input mounting flange and the collimating lens and a second relay lens system is located between the refocusing lens and the output mounting flange.

11. The digital adaptive optics encoder module of claim 10 , further adjusting a scale of an input aperture size by demagnifying the target to fill the digital adaptive optic elements the second relay lens matches or exceeds an input aperture diameter of the digital adaptive optics encoder module.

12. The digital adaptive optics encoder module of claim 9 , wherein the telescope is a telephoto zoom lens that has a focal length ranging from about 900 mm to about 2100 mm.

13. The digital adaptive optics encoder module of claim 9 , wherein the output mounting flange is attached to the output connection that includes a processing module and an output connection module selected from the group consisting of a camera module, a data acquisition module, a sensor module, a focusing element module, and combinations thereof.

14. The digital adaptive optics encoder module of claim 9 , wherein the output mounting flange is attached to a sensor module that records a raw intensity of the target and stores the raw intensity of the target as data.

15. The digital adaptive optics encoder module of claim 9 , wherein the refocusing lens is a 1 inch diameter plano-concave lens with a −75 mm focal length.

16. A digital adaptive optics encoder module, comprising:
an input mounting flange, wherein the input mounting flange is a mount capable of attaching to a telescope;
a first relay lens, wherein the first relay lens adjusts a scale of an input aperture diameter by demagnifying the target to fill an input aperture of the digital adaptive optic elements;
a collimating lens, wherein the collimating lens is capable of expanding light from the first relay lens to fill a plurality of primary apertures;
a bandpass filter for receiving light from the collimating lens having a bandwidth ranging from about 40 nm to about 100 nm;
digital adaptive optic elements for receiving light from the bandpass filter, wherein the digital adaptive optic elements include:
i) the plurality of primary apertures for receiving light from the target;
ii) an optical spreader for spreading apart the light passing through the primary apertures by at least a factor of two times a baseline separation of the primary apertures, wherein the optical spreader includes a plurality of actuators for modifying path lengths within the digital adaptive optic elements through the primary apertures to a detector;
iii) a focusing optic for focusing the light from the optical spreader at the detector; and
iv) the detector for detect

Assignees

• Naval Information Warfare Center Pacific
• Us Navy

Inventors

• Laxton Benjamin
• Drexler Kyle
• Lilledahl Skylar D

Classifications

• G02B27/14

  operating by reflection only · CPC title

• G02B27/12

  operating by refraction only · CPC title

• G02B23/16

  Housings; Caps; Mountings; Supports, e.g. with counterweight · CPC title

• G02B23/145

  Zoom viewfinders · CPC title

• G01D5/34794

  Optical encoders using the Vernier principle, i.e. incorporating two or more tracks having a (n, n+1, ...) relationship · CPC title