Title:
PROJECTING LENS DEVICE
Document Type and Number:
Japanese Patent JP3214262
Kind Code:
B2
Abstract:
PURPOSE: To make it possible to deal with a broad projecting distance range with one kind by dividing an OC housing to two, making the inclination and spacing between variable and forming a liquid sealable coupling structure.
CONSTITUTION: The OC housing 21 and the OC housing 22 are separate and are separable as both are formed of a coupling structure of a piston and cylinder like type. Locking of the OC housing 21 and the OC housing 22 is executed by a lock bolt. This lock bolt passes a through-hole bored in the OC housing 21 and is screwed to internal threads formed at the OC housing 22. The OC housing 21 and the OC housing 22 are sucked and fastened to securely hold a ring cam 51 by tightening the lock bolt. An OC liquid 43 is injected and packed into an OC chamber 42 which is a liquid tight space formed of the four; the OC housing 21, the OC housing 22, an OC lens 23 and a CRT 24.
Inventors:
Takashi Kashiwabara
Tadayoshi Yamada
Tadayoshi Yamada
Application Number:
JP28055594A
Publication Date:
October 02, 2001
Filing Date:
November 15, 1994
Export Citation:
Assignee:
Matsushita Electric Industrial Co., Ltd
International Classes:
G02B7/02; G02B13/16; G02B27/18; H04N5/74; (IPC1-7): G02B7/02
Domestic Patent References:
| JP4352142A | ||||
| JP1146205U |
Attorney, Agent or Firm:
Fumio Iwahashi (2 others)
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