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EP0051331A1 Expired / Lapsed EP ⏱️ 0.0 years remaining

Pivoting-mirror device

Assignee: Koninklijke Philips NV
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Filing: 1981-10-22
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Granted: —
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Expires: 2001-10-22
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Abstract

Abstract A pivoting mirror device for an apparatus for optically reading information tracks on an information carrier comprises a pivoting mirror (1) which is pivotable about one or more pivoting axes (5, 6) with the aid of a mirror bearing arrangement (9), which arrangement comprises a rigid bearing support (10) and an elastic bearing (13) made of a rubber-like material, which is connected both to the pivoting mirror and to the bearing support and which partly surrounds the bearing support. In order to obtain a suitable ratio between the rigidity of the pivoting mirror bearing in desired pivoting directions and the rigidity in undesired articulating directions, the portion (14) of the bearing support located in the elastic material has a cross-section which varies from a minimum transverse dimension at the end (11) of the bearing support near the pivoting mirror to a maximum transverse dimension at a location which is more remote from the pivoting mirror (15). (FIG. 1).

Inventors

  • 👤 Wilhelmus Adrianus Henricus Gijzen

Bibliographic Details

Application Number —
Jurisdiction EP
Data Source google_patents
Last Synchronized 2026-11-07 22:43
CPC Classifications
G; G11; G11B; G11B7/00; G11B7/08; G11B7/09; G11B7/0925; G02; G02B; G02B7/00; G02B7/18; G02B7/182; G02B7/1821

Claims Analysis

Total Claims: 5
Claim 1
Independent Claim 202 words
A pivoting-mirror device for an apparatus which scans information tracks on an information carrier with the aid of a radiation beam, which device comprises: - a pivoting mirror (1) which is pivotable about at least one pivotal axis (5, 6) and which has a radiation-reflecting front (2) and, on the reverse side, a back (3), and a'pivotal mirror bearing arrangement (2) comprising: - a rigid bearing support (10) having a first end (11) situated near the back (3) of the pivoting mirror and a second end (12) which is remote therefrom, and - an elastic bearing (13) of an elastomeric material which is connected both to the back (3) of the pivoting mirror (l) and to the bearing support (10), which material surrounds the first end of the bearing support and a portion (14) of the bearing support adjacent, the first end, characterized in that said portion (14) of the bearing support (10) which is situated adjacent the first end (11) has a cross-section in a plane perpendicular to said pivotal axis which varies from a minimum transverse dimension at the first end (11) to a maximum transverse dimension at a location (15) situated nearer the second end (12). (Figs. 1, 3).
Claim 2
Dependent Claim 202 words
A pivoting-mirror device for an apparatus which scans information tracks on an information carrier with the aid of a radiation beam, which device comprises: - a pivoting mirror (1) which is pivotable about at least one pivotal axis (5, 6) and which has a radiation-reflecting front (2) and, on the reverse side, a back (3), and a'pivotal mirror bearing arrangement (2) comprising: - a rigid bearing support (10) having a first end (11) situated near the back (3) of the pivoting mirror and a second end (12) which is remote therefrom, and - an elastic bearing (13) of an elastomeric material which is connected both to the back (3) of the pivoting mirror (l) and to the bearing support (10), which material surrounds the first end of the bearing support and a portion (14) of the bearing support adjacent, the first end, characterized in that said portion (14) of the bearing support (10) which is situated adjacent the first end (11) has a cross-section in a plane perpendicular to said pivotal axis which varies from a minimum transverse dimension at the first end (11) to a maximum transverse dimension at a location (15) situated nearer the second end (12). (Figs. 1, 3).
Claim 3
Dependent Claim 56 words
A pivoting-mirrordevice as claimed in Claim 1, characterized in that the elastomeric material surrounds the bearing support (10) over the entire length of said portion (14) of varying cross-section, the bearing support also being surrounded by a layer of elastomeric material at the said location (15) where the cross-section has the maximum transverse dimension (Fig. 3).
Claim 4
Dependent Claim 37 words
A pivoting-mirror device as claimed in Claim 2, characterized in that for affixing the elastomeric material to the bearing support (10), the bearing support has a constricted portion (60) adjoining said portion of varying cross-section (Fig. 3).
Claim 5
Dependent Claim 32 words
A pivoting-mirror device as claimed in any one of the preceding Claims, characterized in that said cross-section has the form of a longitudinal section of a truncated cone (Figs. 1, 3, 4).

References Cited (Backward Citations)

GB337084A Cited
DE660974C Cited
CH354117A Cited
US4021096A Cited

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