# US 10,308,550 B2 · Device including a radiation emitter for applying radiation to a target, and related methods

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- Number: US 10,308,550 B2
- Document ID: US10308550B2
- Status: Granted
- Kind: B2
- Application number: 15/917,000
- Filed: 2018-03-09
- Published: 2018-09-13
- Granted: 2019-06-04
- Earliest claimed: 2017-03-10
- Assignees: Heraeus Noblelight America LLC; Heraeus Noblelight GmbH
- Applicants: Heraeus Noblelight America LLC; Heraeus Noblelight GmbH
- Inventors: Johanna Heck; Darrin Leonhardt; David Sprankle; Michael Peil; Jörg Diettrich
- Web page: https://patentgrep.com/patent/US10308550B2

## CPC

- C03C 25/26: Macromolecular compounds or prepolymers
- B05D 3/067: {Curing or cross-linking the coating}
- B05D 7/20: to wires (for insulating electric cables H01B13/16)
- C03B 1/00: Preparing the batches (chemical compositions C03C)
- C03C 25/104: to obtain optical fibres
- C03C 25/12: General methods of coating; Devices therefor
- F26B 3/28: by radiation, e.g. from the sun
- F26B 13/002: {Drying coated, e.g. enamelled, varnished, wires}
- G02B 1/048: {characterised by the cladding material}
- G02B 6/02033: {Core or cladding made from organic material, e.g. polymeric material (G02B1/04 takes precedence)}
- G02B 19/0023: {at least one surface having optical power}
- G02B 19/0066: {in the form of an LED array}
- G02B 19/0095: {for use with ultraviolet radiation}
- B05D 3/0263: {with IR heaters}
- B05D 3/029: {with microwaves}
- G02B 6/02395: {Glass optical fibre with a protective coating, e.g. two layer polymer coating deposited directly on a silica cladding surface during fibre manufacture (G02B6/02052, G02B6/02057, G02B6/024, G02B6/032, G02B6/105, G02B6/14 take precedence; coating on fibre gratings G02B6/02104; multilayer core or cladding G02B6/036; reinforcing splice joints G02B6/2558; optical cables, i.e. comprising protective structures external to the protective coating such as a jacket or plural coated optical fibres G02B6/44; coating of glass to obtain optical fibres C03C25/104)}
- C03C: CHEMICAL COMPOSITION OF GLASSES, GLAZES OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
- B05D: PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL (conveying articles or workpieces through baths of liquid B65G, e.g. B65G49/02)
- C03B: MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
- F26B: DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM (drying devices for combines A01D41/133; racks for drying fruit or vegetables A01F25/12; drying foodstuffs A23; drying hair A45D20/00; body-drying implements A47K10/00; drying household articles A47L; drying gases or vapours B01D; chemical or physical processes for dewatering or like separating liquids from solids B01D43/00; centrifugal apparatus B04; drying ceramics C04B33/30; drying yarns or fabrics in association with some other form of treatment D06C; drying frames for laundry without heating or positive air circulation, domestic laundry-or spin-driers, wringing or hot pressing laundry D06F; furnaces, kilns, ovens F27)
- G02B: OPTICAL ELEMENTS, SYSTEMS OR APPARATUS

## Abstract

A device for applying radiation to a target is provided. The device includes a radiation emitter to emit electromagnetic radiation having a peak emission wavelength in the range from 10 nm-1 mm, and a first reflector that extends in a length direction with a concave cross section. The first reflector defines a cavity area having a perimeter, and includes an inward facing reflective border for at least 50% of the perimeter of the cavity area. Radiation is provided to the cavity area with an intensity distribution I and a maximum intensity Imax. The cavity area includes a focal area defined by all points at which a normalized intensity I/Imax is greater than 0.2. A width of the focal area is 0.0001-0.5 times a width of the cavity area.

## Claims

### Claim 1

A device for applying radiation to a target, the device comprising:
a radiation emitter configured to emit electromagnetic radiation having a peak emission wavelength in the range from 10 nm to 1 mm from a radiation emitting surface of the radiation emitter; and
a first reflector that extends in a length direction and has a concave cross section perpendicular to the length direction, the first reflector defining a cavity area having a perimeter, the first reflector having an inward facing reflective border for at least 50% of the perimeter of the cavity area,
wherein the radiation emitting surface is oriented so as to provide radiation to the cavity area with an intensity distribution I and a maximum intensity Imax,
wherein the cavity area includes a focal area defined by all points at which a normalized intensity I/Imax is greater than 0.2,
wherein a width of the focal area is 0.0001 to 0.5 times a width of the cavity area, and
wherein the width of the focal area and the width of the cavity area are determined along a line passing through a point of maximum intensity Imax and which is parallel to a line joining two end points of the radiation emitting surface of the radiation emitter.

### Claim 2 (depends on 1)

The device of claim 1 wherein an area of the focal area is 0.00000001 to 0.30 times that of the cavity area.

### Claim 3 (depends on 1)

The device of claim 1 wherein an area of the focal area is in a range of 1-3000 mm2.

### Claim 4 (depends on 1)

The device of claim 1 wherein a width of the focal area is in a range of 0.01-50 mm.

### Claim 5 (depends on 1)

The device of claim 1 wherein for a circle centered at a point of Imax and having a diameter equal to the width of the focal area, a minimum value of intensity on a circumference of the circle divided by a maximum value of intensity on the circumference of the circle is at least 0.2.

### Claim 6 (depends on 1)

The device of claim 1 further comprising a further reflector which provides an inward facing reflective border to part of the perimeter of the cavity area.

### Claim 7 (depends on 6)

The device of claim 6 wherein the further reflector defines an aperture, wherein the radiation emitter is located outside the cavity area and the radiation emitting surface is oriented toward the aperture.

### Claim 8 (depends on 1)

The device of claim 1 further comprising a target chamber having a target chamber wall, wherein the target chamber wall is transparent to a peak emission wavelength of the radiation emitter, wherein at least 50% of the focal area is included in the target chamber.

### Claim 9 (depends on 8)

The device of claim 8 wherein the focal area is completely included in the target chamber.

### Claim 10 (depends on 9)

The device of claim 9 wherein at least one of (i) an inert gas, and (ii) a flow of an inert gas, is provided in the target chamber.

### Claim 11 (depends on 1)

The device of claim 1 further comprising one or more air ducts in the perimeter of the cavity area.

### Claim 12 (depends on 1)

The device of claim 1 wherein the normalized intensity I/Imax in the cavity area has a maximum gradient of less than 1 per mm.

### Claim 13 (depends on 1)

The device of claim 1 wherein the normalized intensity I/Imax in the focal area has a maximum gradient of less than 0.5 per mm.

### Claim 14 (depends on 1)

The device of claim 1 wherein a peak emission wavelength of the radiation emitter is in a range of 170-450 nm.

### Claim 15 (depends on 1)

The device of claim 1 wherein a peak emission wavelength of the radiation emitter is in a range of 700 nm-1 mm.

### Claim 16 (depends on 1)

The device of claim 1 wherein the radiation emitter includes an array of at least four radiation emitters.

### Claim 17 (depends on 1)

The device of claim 1 wherein the radiation emitter includes refractive optics to alter the divergence of radiation emitted from the radiation emitting surface.

### Claim 18 (depends on 1)

The device of claim 1 further comprising one or more reflectors perpendicular to the length direction of the first reflector.

### Claim 19 (depends on 1)

The device of claim 1 further comprising a motion system for moving a target relative to the radiation emitter.

### Claim 20 (depends on 1)

A method of applying radiation to a target, the method comprising the steps of:
(a) introducing a target into the device of claim 1; and
(b) applying radiation to the target using the radiation emitter.