# US 5,353,167 A · Mirror mount

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- Number: US 5,353,167 A
- Document ID: US5353167A
- Status: Granted
- Kind: A
- Application number: 07/917,244
- Filed: 1992-07-22
- Granted: 1994-10-04
- Earliest claimed: 1992-07-22
- Assignees: The United States of America as represented by the United States Department of Energy
- Inventors: Thomas C. Kuklo; Donald A. Bender
- Web page: https://patentgrep.com/patent/US5353167A

## CPC

- G02B 7/1827: {Motorised alignment}
- G02B 7/1825: {made by screws, e.g. for laser mirrors}
- G02B: OPTICAL ELEMENTS, SYSTEMS OR APPARATUS

## Abstract

A unique lens or mirror mount having adjustable constraints at two key locations to allow for "X" and "Y" tilts of the mirror only. The device uses two pair of flexures of a type such that the pivots of the mirror gimble are rigidly fixed in all planes allowing the device to have zero stacking tolerance and zero wear over time.

## Claims

### Claim 1

A mount structure for a mirror or lens comprising:
(a) a base having a mounting block, said block having side surfaces;
(b) a first pair of flexures connected to and protruding from opposing portions of said side surfaces of said block in a first plane and defining a first axis of rotation;
(c) a ring mounted to said block via only said first pair of flexures;
(d) a second pair of flexures connected to and protruding from said ring on opposing sides of said ring and at right angles to said first plane, and defining a second axis of rotation;
(e) acceptor means for holding a lens or mirror, mounted to said ring via only said second pair of flexures;
(f) first axis driver means for rotating said acceptor means about said first axis of rotation, said first axis driver means contacting said acceptor means at a point along said first axis of rotation; and
(g) second axis driver means for rotating said acceptor means about said second axis of rotation, said second axis driver means contacting said acceptor means at a point along said second axis of rotation.

### Claim 2 (depends on 1)

A mount structure as claimed in claim 1 wherein said first plane is horizontal and said first axis of rotation is horizontal, and wherein said second plane is vertical and said second axis of rotation is vertical.

### Claim 3

A mount structure for a mirror or lens comprising:
(a) a base having a mounting block, said block having side surfaces;
(b) a first pair of flexures connected to and protruding from opposing portions of said side surfaces of said block in a first plane and defining a first axis of rotation;
(c) a ring mounted to said block via only said first pair of flexures;
(d) a second pair of flexures connected to and protruding from said ring on opposing sides of said ring and at right angles to said first plane, and defining a second axis of rotation;
(e) acceptor means for holding a lens or mirror, mounted to said ring via only said second pair of flexures;
(f) first axis driver means for rotating said acceptor means about said first axis of rotation, said first axis driver means contacting said acceptor means at a point along said first axis of rotation; and
(g) second axis driver means for rotating said acceptor means about said second axis of rotation, said second axis driver means contacting said acceptor means at a point along said second axis of rotation wherein said mounting block is surrounded by said ring, said first pair of flexures connect said block to said ring via an inner edge of said ring, and said second pair of flexures connect said ring to said acceptor means via an outer edge of said ring.

### Claim 4 (depends on 3)

A mount structure as claimed in claim 3 wherein said acceptor means comprises a mirror cup, further including a fully reflective mirror mounted in said mirror cup.

### Claim 5

A mount structure for a mirror or lens comprising:
(a) a base having a mounting block, said block having side surfaces;
(b) a first pair of flexures connected to and protruding from opposing portions of said side surfaces of said block in a first plane and defining a first axis of rotation;
(c) a ring mounted to said block via only said first pair of flexures;
(d) a second pair of flexures connected to and protruding from said ring on opposing sides of said ring and at right angles to said first plane, and defining a second axis of rotation;
(e) acceptor means for holding a lens or mirror, mounted to said ring via only said second pair of flexures;
(f) first axis driver means for rotating said acceptor means about said first axis of rotation, said first axis driver means contacting said acceptor means at a point along said first axis of rotation; and
(g) second axis driver means for rotating said acceptor means about said second axis of rotation, said second axis driver means contacting said acceptor means at a point along said second axis of rotation wherein said ring is surrounded by said mounting block, said first pair of flexure connected said block to said ring via an outer edge of said ring, and said second pair of flexures connect said ring to said acceptor means via an inner edge of said ring.

### Claim 6 (depends on 5)

A mount structure as claimed in claim 5 wherein said acceptor means comprises a mirror cup, further including a partially reflective, partially transmissive mirror mounted in said mirror cup.

### Claim 7 (depends on 5)

A mount structure as claimed in claim 5 further including a lens mounted in said acceptor means.

### Claim 8

A mount structure for a mirror or lens comprising:
(a) a base having a mounting block, said block having side surfaces;
(b) a first pair of flexures connected to and protruding from opposing portions of said side surfaces of said block in a first plane and defining a first axis of rotation;
(c) a ring mounted to said block via only said first pair of flexures;
(d) a second pair of flexures connected to and protruding from said ring on opposing sides of said ring and at right angles to said first plane, and defining a second axis of rotation;
(e) acceptor means for holding a lens or mirror, mounted to said ring via only said second pair of flexures;
(f) first axis driver means for rotating said acceptor means about said first axis of rotation, said first driver means including a cantilever arm which contacts said acceptor means at a point along said first axis of rotation; and
(g) second axis driver means for rotating said acceptor means about said second axis of rotation, said second driver means including a cantilever arm which contacts said acceptor means at a point along said second axis of rotation.

### Claim 9 (depends on 8)

A mount structure as claimed in claim 8 wherein said first plane is horizontal and said first axis of rotation is horizontal, and wherein said second plane is vertical and said second axis of rotation is vertical.

### Claim 10 (depends on 8)

A mount structure as claimed in claim 8 wherein said ring is surrounded by said mounting block, said first pair of flexures connect said block to said ring via an outer edge of said ring, and said second pair of flexures connect said ring to said acceptor means via an inner edge of said ring.

### Claim 11 (depends on 8)

A mount structure as claimed in claim 8 wherein said acceptor means comprises a mirror cup, further including a fully reflective mirror mounted in said mirror cup.

### Claim 12 (depends on 8)

A mount structure as claimed in claim 8 wherein said acceptor means comprises a mirror cup, further including a partially reflective, partially transmissive mirror mounted in said mirror cup.

### Claim 13 (depends on 8)

A mount structure as claimed in claim 8 further including a lens mounted in said acceptor means.