IP Library › Granted Patent US 11,320,664
Granted Patent B2
US 11,320,664 · App. 15/930,013 · Granted May 3, 2022

Beam combiner for optical beams with differing beam properties

Inventor: Ken A. Fetterhoff (Vail, AZ)
Assignee: Raytheon Company
G02B27/126
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Quick Facts
Patent No.
US 11,320,664
App. No.
15/930,013
Granted
May 3, 2022
Kind
B2
Abstract

An apparatus includes a beam combiner structured as a prism. The beam combiner includes a first side configured to transmit a first beam generated from a first beam generator into the prism. The beam combiner also includes a second side configured to internally reflect the first beam and transmit a second beam generated from a second beam generator into the prism. The beam combiner further includes a third side configured to transmit the first beam and the second beam as a combined beam to a beam receiver.

Claims (235)

1. An apparatus comprising:

a beam combiner comprising a prism, the prism comprising:

a first side configured to transmit a first beam generated from a first beam generator into the prism;

a second side configured to internally reflect the first beam and transmit a second beam generated from a second beam generator into the prism; and

a third side configured to transmit the first beam and the second beam as a combined beam to a beam receiver;

wherein the prism is configured to orthogonally transmit the combined beam through the third side.

2. The apparatus of claim 1 , wherein the prism is configured to coaxially combine the first beam and the second beam to form the combined beam.

3. The apparatus of claim 1 , wherein the prism is configured to receive the second beam at a location on the second side where the first beam is internally reflected.

4. An apparatus comprising:

a beam combiner comprising a prism, the prism comprising:

a first side configured to transmit a first beam generated from a first beam generator into the prism;

a second side configured to internally reflect the first beam and transmit a second beam generated from a second beam generator into the prism; and

a third side configured to transmit the first beam and the second beam as a combined beam to a beam receiver;

wherein the prism is configured to receive the first beam orthogonally through the first side.

5. The apparatus of claim 4 , wherein the prism is configured to orthogonally transmit the combined beam through the third side.

6. An apparatus comprising:

a beam combiner comprising a prism, the prism comprising:

a first side configured to transmit a first beam generated from a first beam generator into the prism;

a second side configured to internally reflect the first beam and transmit a second beam generated from a second beam generator into the prism; and

a third side configured to transmit the first beam and the second beam as a combined beam to a beam receiver;

wherein an angle θ c between the first side and the second side of the prism is defined by:

θ

c

=

sin

-

1

⁡

(

n

2

n

1

)

where n 1 is a refractive index of a material forming the prism and n 2 is a refractive index of a material surrounding the prism.

7. An apparatus comprising:

a beam combiner comprising a prism, the prism comprising:

a first side configured to transmit a first beam generated from a first beam generator into the prism;

a second side configured to internally reflect the first beam and transmit a second beam generated from a second beam generator into the prism; and

a third side configured to transmit the first beam and the second beam as a combined beam to a beam receiver;

wherein an angle θ B ′ between the second side and the third side of the prism is defined by:

θ

B

′

=

sin

-

1

⁡

(

n

1

n

2

⁢

sin

⁢

⁢

θ

B

)

where:

θ

B

=

tan

-

1

⁡

(

n

1

n

2

)

where n 1 is a refractive index of a material forming the prism and n 2 is a refractive index of a material surrounding the prism.

8. A system comprising:

a first beam generator configured to generate a first beam;

a second beam generator configured to generate a second beam; and

a prism configured to combine the first beam and the second beam into a combined beam, the prism comprising:

a first side configured to transmit the first beam into the prism;

a second side configured to internally reflect the first beam and transmit the second beam into the prism; and

a third side configured to transmit the first beam and the second beam as the combined beam to a beam receiver;

wherein the prism is configured to receive the first beam orthogonally through the first side.

9. The system of claim 8 , wherein the prism is configured to coaxially combine the first beam and the second beam to form the combined beam.

10. The system of claim 8 , wherein the prism is configured to receive the second beam at a location on the second side where the first beam is internally reflected.

11. A system comprising:

a first beam generator configured to generate a first beam;

a second beam generator configured to generate a second beam; and

a prism configured to combine the first beam and the second beam into a combined beam, the prism comprising:

a first side configured to transmit the first beam into the prism;

a second side configured to internally reflect the first beam and transmit the second beam into the prism; and

a third side configured to transmit the first beam and the second beam as the combined beam to a beam receiver;

wherein the prism is configured to orthogonally transmit the combined beam through the third side.

12. The system of claim 11 , wherein the prism is configured to receive the first beam orthogonally through the first side.

13. A system comprising:

a first beam generator configured to generate a first beam;

a second beam generator configured to generate a second beam; and

a prism configured to combine the first beam and the second beam into a combined beam, the prism comprising:

a first side configured to transmit the first beam into the prism;

a second side configured to internally reflect the first beam and transmit the second beam into the prism; and

a third side configured to transmit the first beam and the second beam as the combined beam to a beam receiver;

wherein an angle 74 c between the first side and the second side of the prism is defined by:

θ

c

=

sin

-

1

⁡

(

n

2

n

1

)

where n 1 is a refractive index of a material forming the prism and n 2 is a refractive index of a material surrounding the prism.

14. A system comprising:

a first beam generator configured to generate a first beam;

a second beam generator configured to generate a second beam; and

a prism configured to combine the first beam and the second beam into a combined beam, the prism comprising:

a front side configured to transmit the first beam into the prism;

a second side configured to internally reflect the first beam and transmit the second beam into the prism; and

a third side configured to transmit the first beam and the second beam as the combined beam to a beam receiver;

wherein an angle θ B ′ between the second side and the third side of the prism is defined by:

θ

B

′

=

sin

-

1

⁡

(

n

1

n

2

⁢

sin

⁢

⁢

θ

B

)

where:

θ

B

=

tan

-

1

⁡

(

n

1

n

2

)

where n 1 is a refractive index of a material forming the prism and n 2 is a refractive index of a material surrounding the prism.

15. A method comprising:

transmitting, through a first side of a prism, a first beam generated from a first beam generator into the prism;

internally reflecting the first beam on a second side of the prism;

transmitting, through the second side of the prism, a second beam generated from a second beam generator into the prism; and

transmitting, through a third side of the prism, the first beam and the second beam as a combined beam to a beam receiver;

wherein the combined beam is orthogonally transmitted through the third side.

16. The method of claim 15 , wherein the first beam and the second beam are coaxially combined to form the combined beam.

17. The method of claim 15 , wherein the second beam is received at a location on the second side where the first beam is internally reflected.

18. A method comprising:

transmitting, through a first side of a prism, a first beam generated from a first beam generator into the prism;

internally reflecting the first beam on a second side of the prism;

transmitting, through the second side of the prism, a second beam generated from a second beam generator into the prism; and

transmitting, through a third side of the prism, the first beam and the second beam as a combined beam to a beam receiver;

wherein the first beam is orthogonally transmitted through the first side.

19. A method comprising:

transmitting, through a first side of a prism, a first beam generated from a first beam generator into the prism;

internally reflecting the first beam on a second side of the prism;

transmitting, through the second side of the prism, a second beam generated from a second beam generator into the prism; and

transmitting, through a third side of the prism, the first beam and the second beam as a combined beam to a beam receiver;

wherein an θ c angle between the first side and the second side of the prism is defined by:

θ

c

=

sin

-

1

⁡

(

n

2

n

1

)

where n 1 is a refractive index of a material forming the prism and n 2 is a refractive index of a material surrounding the prism.

20. A method comprising:

transmitting, through a first side of a prism, a first beam generated from a first beam generator into the prism;

internally reflecting the first beam on a second side of the prism;

transmitting, through the second side of the prism, a second beam generated from a second beam generator into the prism; and

transmitting, through a third side of the prism, the first beam and the second beam as a combined beam to a beam receiver;

wherein an angle θ B ′ between the second side and the third side of the prism is defined by:

θ

B

′

=

sin

-

1

⁡

(

n

1

n

2

⁢

sin

⁢

⁢

θ

B

)

where:

θ

B

=

tan

-

1

⁡

(

n

1

n

2

)

where n 1 is a refractive index of a material forming the prism and n 2 is a refractive index of a material surrounding the prism.

Assignments (1)
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded May 12, 2020
From: FETTERHOFF, KEN A.
To: RAYTHEON COMPANY
Reel/Frame 052639/0962 →
Continuity (1)
Related Publication 20210356753A1 · Nov 18, 2021