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Lighting device and display device

A technology for lighting devices and control parts, applied in projection devices, optics, instruments, etc., can solve the problems of large amplitude of optical components, damage of components around optical components, collision with surrounding components, etc., to reduce vibration amplitude, avoid adverse effects, The effect of reducing the generation of interference patterns

Active Publication Date: 2016-03-23
SONY CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0009] Then, during the vibration of such an optical element, there may occur a phenomenon that the amplitude of the optical element (vibration amplitude value) becomes excessively large in some cases
In this case, the optical element may collide with surrounding parts (for example, the holding part of the optical element, or the housing of the device, etc.), which will cause abnormal noise, or cause the optical element or the optical Damage to surrounding parts of the element, etc.

Method used

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  • Lighting device and display device
  • Lighting device and display device
  • Lighting device and display device

Examples

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no. 1 example

[0037] Brief structure of the display device 1

[0038] figure 1It is a perspective view showing a schematic structure (cross-sectional structure) of a display device (display device 1 ) according to a first embodiment of the present invention. The display device 1 is a projection-type display device that projects an image (image light) onto a screen (projected surface) not shown in the figure. Inside the housing 10, the display device 1 includes a red laser 11R, a green laser 11G, a blue laser 11B, a collimating lens 12R, a collimating lens 12G, a collimating lens 12B, a dichroic prism (dichroicprism) 131, a dichroic Prism 132 , optics 14 and fly-eye lens 15 . In addition, the display device 1 further includes a PBS (polarizing beam splitter) 16 , a reflective liquid crystal element 17 , a projection lens 18 (projection optical system), and a control unit 19 . Among these components, red laser 11R, green laser 11G, blue laser 11B, collimator lens 12R, collimator lens 12G, ...

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Abstract

An illuminator includes: a light source section including a laser light source; an optical element through which a laser beam from the laser light source passes; a driving section oscillating the optical element; and a control section controlling, in a driving operation performed by the driving section, the driving operation to allow an oscillating amplitude value of the optical element in a startup period of the optical element to be equal to or less than the oscillating amplitude value of a steady-state operation period of the optical element that is subsequent to the startup period.

Description

[0001] Cross References to Related Applications [0002] This application contains subject matter related to that disclosed in Japanese Priority Patent Application JP2011-209253 filed in Japan Patent Office on Sep. 26, 2011, the entire content of which is hereby incorporated by reference. technical field [0003] The present invention relates to an illuminating device that emits illuminating light (including laser beams), and also relates to a display device that displays images using such illuminating light. Background technique [0004] An optical module, which is one of main components of a projector (projection-type display device), generally includes an illumination optical system (illumination device) including a light source and a projection optical system (projection optical system) including an optical modulation element. In recent years, in the field of such projectors, small-sized (palm-sized) and low-weight portable projectors called microprojectors have graduall...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G03B21/20G03B21/14G03B21/00G02B27/18G02B27/48
CPCH04N9/3161G02B27/48G03B21/2033G03B21/208H04N9/3111
Inventor 矶部裕史
Owner SONY CORP