US4526711A
Expired / Lapsed
US
⏱️ 0.0 years remaining
High refractive index fluid and melt mounting media
Assignee: R P CARGILLE LABORATORIES Inc 55 COMMERCE ROAD CEDAR GROVE NJ 07009 A NJ CORP
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Filing: 1983-09-09
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Granted: 1985-07-02
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Expires: 2003-09-09
Abstract
Abstract Formulations for use as mounting media in microscopy and also useful as optical coupling materials for fibers and lens systems having a wide range of refractive index between 1.58 to 1.73 and exhibiting a range in viscosity from a very viscous fluid to a semi-solid resin or melt. The material is selected from brominated diphenyl oxides and modified or unmodified alpha-methylstyrene polymers. These materials can be employed individually or blended together with a stabilizer to provide a host of materials having different refractive indexes within said range and useful in various optical systems.
Inventors
- 👤 Robert L. Sacher
- 👤 William J. Sacher
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 06:20
CPC Classifications
C; C03; C03C; C03C27/00; C03C27/06; C03C27/10; G; G02; G02B; G02B21/00; G02B21/33
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
85 words
A liquid optical coupling material for bonding one optical part to another, said material exhibiting a range in refractive index between 1.58 to 1.73 to enable the material to be employed in a wide range of optical applications, said material being a blend consisting of a brominated diphenyloxide blended with an alpha-methylstyrene polymer, with said alpha-methylstyrene polymer selected to have an index of refraction of between 1.557 to 1.586 at 5893 Angstroms and having a density between 0.98 to 1.03 g/cc all at 25° C.
Claim 2
Dependent Claim
85 words
A liquid optical coupling material for bonding one optical part to another, said material exhibiting a range in refractive index between 1.58 to 1.73 to enable the material to be employed in a wide range of optical applications, said material being a blend consisting of a brominated diphenyloxide blended with an alpha-methylstyrene polymer, with said alpha-methylstyrene polymer selected to have an index of refraction of between 1.557 to 1.586 at 5893 Angstroms and having a density between 0.98 to 1.03 g/cc all at 25° C.
Claim 3
Dependent Claim
39 words
The optical coupling material according to claim 1, wherein said alpha-methylstyrene polymer has an index of refraction of 1.581 at 5893 Angstroms at a temperature of 25° C. and having a pour point between 60° C. to 70° C.
Claim 4
Dependent Claim
37 words
The optical coupling material according to claim 1, wherein said alpha-methylstyrene polymer has an index of refraction of 1.557 at 5893 Angstroms at a temperature of 25° C. with a pour point between 23° to 28° C.
Claim 5
Dependent Claim
16 words
The optical coupling material according to claim 1, wherein said brominated diphenyloxide is a pentabromodiphenyl oxide.
Claim 6
Dependent Claim
42 words
The optical coupling material according to claim 4 further including at least 1% by volume of a substituted 2-hydroxy benzophenone being 2-hydroxy-4-iso-octoxybenzophenone to impart a refractive index to the material of 1.688 at 25° C. with a pour point between 20°-30° C.
Claim 7
Dependent Claim
62 words
The optical coupling material according to claim 1, wherein said brominated diphenyloxide is a blend of 67% in volume of pentabromodiphenyloxide with 32% in volume of octabromodiphenyl oxide with the remainder being a stabilizer of 2-hydroxy-4-iso-octoxybenzophene to provide an optical coupling material having a refractive index at 25° of 1.700 at 5893 Angstroms with a pour point between 60° to 70° C.
Claim 8
Dependent Claim
93 words
A liquid optical coupling material for bonding one optical part to another, said material consisting essentially of a blend by volume of 45% pentabromodiphenyl oxide, 22% of octabromodiphenyl oxide, and 32% of an alpha-methylstryrene polymer and polymer selected to have an index of refraction of between 1.557 to 1.586 at 5893 Angstroms and having a density of between 0.98 to 1.03 g/cc at 25°, and of a 1% stabilizer being 2-hydroxy-4-iso-octoxybenzophenone to give a refractive index at 25° C. of 1.662 at 5893 Angstroms, with a pour point between 60° to 70° C.
Claim 9
Dependent Claim
93 words
A liquid optical coupling material for bonding one optical part to another, said material consisting essentially of a blend by volume of 45% pentabromodiphenyl oxide, 22% of octabromodiphenyl oxide, and 32% of an alpha-methylstryrene polymer and polymer selected to have an index of refraction of between 1.557 to 1.586 at 5893 Angstroms and having a density of between 0.98 to 1.03 g/cc at 25°, and of a 1% stabilizer being 2-hydroxy-4-iso-octoxybenzophenone to give a refractive index at 25° C. of 1.662 at 5893 Angstroms, with a pour point between 60° to 70° C.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1988-07-01 | 1988-12-31 | 1989-07-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1992-07-01 | 1992-12-31 | 1993-07-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1996-07-01 | 1996-12-31 | 1997-07-02 | $7700.00 | Window Closed / Lapsed |