Apparatus and methods for measuring mode spectra for ion-exchanged glasses having steep index region
US-2018252586-A1 · Sep 6, 2018 · US
Refractive index measuring device and refractive index measuring method
US8947650B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-8947650-B2 |
| Application number | US-201113823144-A |
| Country | US |
| Kind code | B2 |
| Filing date | Sep 9, 2011 |
| Priority date | Sep 16, 2010 |
| Publication date | Feb 3, 2015 |
| Grant date | Feb 3, 2015 |
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Abstract
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In a refractive index measuring device ( 1 ) for measuring a refractive index of a solid sample (S), the solid sample (S) is closely attached to a prism ( 3 ) having a predetermined refractive index with a refractive index liquid ( 4 ) having a predetermined refractive index interposed therebetween. A scaled angle (light receiving member) ( 6 ) having a light receiving surface ( 6 a ) that receives first reflected light (R 1 ), which is a part of light from a light source ( 2 ) and which is reflected by the prism ( 3 ), is provided. When the prism ( 3 ) is rotationally driven by a rotary table (rotational drive unit) ( 5 ) and an intensity of second reflected light (R 2 ) detected by a detector ( 7 ) becomes lower than a predetermined value, the refractive index of the solid sample (S) is measured by using a position of the first reflected light (R 1 ) on the light receiving surface ( 6 a ) of the scaled angle ( 6 ).
First claim
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The invention claimed is: 1. A refractive index measuring device for measuring a refractive index of a solid sample, comprising: a light source; a prism having a predetermined refractive index and including a first surface on which light from the light source is incident and a second surface which emits light that has passed through the first surface toward the solid sample; a rotational drive unit that rotationally drives the prism; a refractive index liquid that has a pred…
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- What does patent US8947650B2 cover?
- In a refractive index measuring device ( 1 ) for measuring a refractive index of a solid sample (S), the solid sample (S) is closely attached to a prism ( 3 ) having a predetermined refractive index with a refractive index liquid ( 4 ) having a predetermined refractive index interposed therebetween. A scaled angle (light receiving member) ( 6 ) having a light receiving surface ( 6 a ) that re…
- Who is the assignee on this patent?
- Yasunaga Hirotoshi, Yamabuchi Koji, Ishida Takeshi, and 1 more
- What technology area does this patent fall under?
- Primary CPC classification G01N21/43. Mapped technology areas include Physics.
- When was this patent published?
- Publication date Tue Feb 03 2015 00:00:00 GMT+0000 (Coordinated Universal Time) (B2). Legal status and post-grant events are not shown on this page.
- What related patents are in patentsdb?
- We list 8 related publications on this page (citations in our corpus or others sharing the same primary CPC).