# US 10,441,378 B2 · Medical headlamp optical arrangement

> Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt

- Number: US 10,441,378 B2
- Document ID: US10441378B2
- Status: Granted
- Kind: B2
- Application number: 15/601,061
- Filed: 2017-05-22
- Published: 2017-09-07
- Granted: 2019-10-15
- Earliest claimed: 2013-05-13
- Assignees: Riverpoint Medical, LLC
- Applicants: Riverpoint Medical, LLC
- Inventors: John Thomas Ferguson
- Web page: https://patentgrep.com/patent/US10441378B2

## CPC

- F21V 5/04: of lens shape
- A61B 1/0692: {head mounted}
- A61B 90/30: Devices for illuminating a surgical field, the devices having an interrelation with other surgical devices or with a surgical procedure
- A61B 90/35: Supports therefor
- B29C 70/72: Encapsulating inserts having non-encapsulated projections, e.g. extremities or terminal portions of electrical components {(B29C70/742 takes precedence)}
- F21V 21/084: Head fittings
- A61B 2090/309: {using white LEDs}
- A61B 2090/502: {Headgear, e.g. helmet, spectacles}
- F21W 2131/20: Lighting for medical use
- F21V: FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
- A61B: DIAGNOSIS; SURGERY; IDENTIFICATION (usefulness limited to only animals A61D)
- B29C: SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING (making preforms B29B11/00; making laminated products by combining previously unconnected layers which become one product whose layers will remain together B32B37/00 - B32B41/00)
- F21W: INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO USES OR APPLICATIONS OF LIGHTING DEVICES OR SYSTEMS

## Abstract

A lamp having a front surface from which light is emitted and that includes a high efficiency light source assembly producing a beam having a 3 dB beamwidth of greater than 100°, and which includes a substrate, a high efficiency light source supported by the substrate; and a dome-lens that contains the high efficiency light source. Also, an optical assembly is positioned to receive light from the light emitting diode assembly and to produce a headlamp light beam emitted from the front surface of the lamp. Further, an annular light block defines an annulus and is placed about the lens, so that the lens protrudes through the annulus, thereby creating a sharp boundary for the output light beam.

## Claims

### Claim 1

A lamp having a front surface from which an output light beam having an output light beam width is emitted, comprising:
(a) a high efficiency light source assembly producing a beam having a 3 dB beam width of greater than or equal to said output light beam width, said assembly having:
(i) a substrate;
(ii) a high efficiency light source supported by said substrate; and
(iii) said high efficiency light source being contained in a lens in the form of a dome, positioned in front of and about said high efficiency light source and being supported by and joined to said substrate;
(b) an optical assembly positioned to receive light from said high efficiency light source and produce a lamp light beam emitted from said front surface of said lamp;
(c) a housing supporting said high-efficiency light source assembly and said optical assembly and an electrical conductor connected to said high-efficiency light source, for supplying electricity to said light source;
(d) an annular light block, having a back, defining an annulus and placed on and about said lens, so that said lens protrudes through said annulus;
(e) whereby some of said light emitted from said high energy light source, but at an angle outside of said output light beam width, strikes said back of said annular light block and is reflected back, away from said front surface, thereby creating a sharp boundary for said output light beam.

### Claim 2 (depends on 1)

The lamp of claim 1, wherein said high efficiency light source is a light emitting diode.

### Claim 3 (depends on 1)

The lamp of claim 1, wherein said lens is made of silicone.

### Claim 4 (depends on 1)

The lamp of claim 1, wherein said annular light block is supported by said lens.

### Claim 5 (depends on 1)

The lamp of claim 1, wherein said optical assembly includes a lens having a rear surface defining a concavity into which said light emitting diode assembly protrudes.

### Claim 6 (depends on 1)

The lamp of claim 1, further having a mass of less than 30 grams.

### Claim 7 (depends on 1)

The lamp of claim 1, that when said electrical conductor is connected to a one-amp current source, uses about 3.15 Watts of electricity and produces a beam of greater than 300 lumens from said front surface.