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Color wheel assembly with color wheel attached directly to driving motor

a technology of color wheel and assembly, which is applied in the direction of lighting and heating apparatus, instruments, picture reproducers, etc., can solve the problems of increasing production costs, increasing components and manufacturing processes, and suppressing problems relating to defective bearings

Inactive Publication Date: 2006-03-02
MINEBEA CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

This approach reduces the number of components and manufacturing steps, enhances precision, and prevents segment scattering during high-speed spinning, while also reducing the risk of bearing-related issues, resulting in a cost-effective and high-precision color wheel assembly.

Problems solved by technology

As described above, the color wheel 160 is attached to the motor hub via the support member 120 and the clamp member 122 thus resulting in increased numbers of components and manufacturing processes, which inevitably involves increased production cost.

Method used

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  • Color wheel assembly with color wheel attached directly to driving motor
  • Color wheel assembly with color wheel attached directly to driving motor
  • Color wheel assembly with color wheel attached directly to driving motor

Examples

Experimental program
Comparison scheme
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first embodiment

[0028] Referring to FIGS. 1A and 1B, a color wheel assembly 10 according to the present invention comprises a motor hub 12 constituting a driving motor, and a monolithic-type color wheel 14 attached directly to the motor hub 12 without using any additional components as shown in FIG. 1B. In the present embodiment, the color wheel 14 is adhesively fixed to the motor hub 12.

second embodiment

[0029] Referring now to FIG. 2, a color wheel assembly 10A according to the present invention comprises a motor hub 12A constituting a driving motor, and a segment-type color wheel 15 including a plurality of color filter segments (only one color filter segment 18 is shown in the figure for the convenience of explanation) and attached directly to the motor hub 12A. The motor hub 12A has a plurality of protrusions 16A (only two are shown in the figure for the convenience of explanation), each of the color filter segments (hereinafter referred to simply as segments as appropriate) 18 et al. has through-holes or cavities (through-holes in the figure) 26 for receiving the protrusions 16A, and the segments 18 et al. constituting the color wheel 15 are adhesively attached to the motor hub 12A such that the protrusions 16A are fitted into the through-holes 26, where the protrusions 16 may be press-fitted into the through-holes 26, or loose-fitted therein to be adhesively fixed. In this con...

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PUM

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Abstract

A color wheel assembly includes a color wheel and a driving motor. The color wheel is attached directly to a hub of the driving motor. Consequently, no additional components are required to fix the color wheel to the driving motor, thereby reducing the number of components and the number of manufacturing processes. Thus, the color wheel assembly as a time-share light dispersing device can be inexpensively manufactured with a high degree of precision.

Description

BACKGROUND OF THE INVENTION [0001] 1. Field of the Invention [0002] The present invention relates to a color wheel assembly as a time-share light dispersing device, incorporating a color wheel suitable for use as a filter element. [0003] 2. Description of the Related Art [0004] Color composition in a projection-type image display apparatus has conventionally been accomplished commonly by a method, such as: a single-panel method, in which one light valve element adapted to control light amount per pixel thereby creating an image is used to disperse each pixel into R (red), G (green), and B (blue) lights; and a three-panel method, in which three light valve elements dedicated to R, G and B lights, respectively, are used to produce R, G and B images in parallel, and then the three images thus produced are composed. Recently, as a light valve element capable of fast switching, such as a ferroelectric liquid crystal display element or a digital micro-mirror device, is increasingly coming...

Claims

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Application Information

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Patent Type & Authority Applications(United States)
IPC IPC(8): G03B21/14
CPCG02B26/008G02B7/006
Inventor NIWA, SHINICHIASAKAWA, TOSHIAKIADACHI, SHIGEYUKITAKAO, KUNIYUKI
Owner MINEBEA CO LTD