Patent US3848973A successfully refreshed from Google Patents.
US3848973A
Expired / Lapsed
US
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Prism holder for a digital light deflection system
Assignee: US Philips Corp
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Filing: 1972-11-02
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Granted: 1974-11-19
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Expires: 1992-11-02
Abstract
Abstract A prism holder for a digital light deflection system in which the holder is plate-shaped and has an aperture which is larger than the prism, the prism bearing on one side with its corners on a flat ring and being enclosed on the other side by means of fixing members.
Inventors
- 👤 J Merz
- 👤 Esdonk J Van
- 👤 J Janssen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 04:50
CPC Classifications
G; G02; G02F; G02F1/00; G02F1/29; G02F1/31; G02B; G02B7/00; G02B7/18; G02B7/1805
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
146 words
A prism holder for a digital light deflection system, which system comprises one or more rectangular prisms and Kerr cells accommodated in a vessel filled with the liquid necessary for the Kerr cells; the holder comprising a plate-shaped member having a substantially rectangular aperture the dimensions of which are larger than the corresponding dimensions of a rectangular prims, a ring shaped support member on one side of said plate-shaped member and concentric with said aperture, said ring shaped support member having a diameter smaller than the diagonal and larger than the smallest side of said aperture and forming supporting points on one side of the aperture on which the prism can bear with at least a part of its outer edge, and fixing members secured to the plate-shaped member on the other side thereof for enclosinG the prism in the aperture without exerting pressure on it.
Claim 2
Dependent Claim
146 words
A prism holder for a digital light deflection system, which system comprises one or more rectangular prisms and Kerr cells accommodated in a vessel filled with the liquid necessary for the Kerr cells; the holder comprising a plate-shaped member having a substantially rectangular aperture the dimensions of which are larger than the corresponding dimensions of a rectangular prims, a ring shaped support member on one side of said plate-shaped member and concentric with said aperture, said ring shaped support member having a diameter smaller than the diagonal and larger than the smallest side of said aperture and forming supporting points on one side of the aperture on which the prism can bear with at least a part of its outer edge, and fixing members secured to the plate-shaped member on the other side thereof for enclosinG the prism in the aperture without exerting pressure on it.
Claim 3
Dependent Claim
20 words
A prism holder as claimed in claim 1, further comprising fixing members having a bevelled edge for enclosing the prism.
Claim 4
Dependent Claim
25 words
A prism holder as claimed in claim 1, wherein the prism is enclosed by fixing members which have a wide and a relatively narrower portion.
Claim 5
Dependent Claim
23 words
A prism holder as claimed in claim 1, wherein grooves for securing the fixing members are provided in the surface of the holder.
Claim 6
Dependent Claim
22 words
A prism holder as claimed in claim 1, wherein the holder, the ring and the fixing members consist of a ceramic material.
Claim 7
Dependent Claim
29 words
A prism holder as claimed in claim 1, wherein the holder has additional apertures with which it can be threaded on supporting rods that are fixed within the vessel.
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) | 1977-11-18 | 1978-05-20 | 1978-11-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-11-18 | 1982-05-20 | 1982-11-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-11-18 | 1986-05-20 | 1986-11-19 | $7700.00 | Window Closed / Lapsed |