Unlock instant, AI-driven research and patent intelligence for your innovation.

Image projection unit and image projection device

A technology of image projection and light source unit, which is applied in projection device, installation, photography, etc., can solve the problems of positional relationship shift of synthetic prism, inability to obtain images, registration shift, etc., and achieves the effect of not easy registration shift

Active Publication Date: 2017-02-15
KONICA MINOLTA INC
View PDF6 Cites 2 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] Therefore, if the image projection device disclosed in Patent Document 1 adopts a configuration in which the color synthesis prism, the total reflection prism, and the total reflection prism and the digital micromirror are respectively bonded and fixed, there is concern about the impact caused by dropping the device. , thermal expansion, and the weight of the digital micromirror device and the assembly parts installed around it, etc., cause the total reflection prism to decompose from the air gap surface
[0010] In addition, even when the total reflection prism is not disassembled, there is concern that the positional relationship between the digital micromirror device and the color synthesis prism will shift due to the expansion of the air gap layer
In this case, misregistration occurs and a good image cannot be obtained

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Image projection unit and image projection device
  • Image projection unit and image projection device
  • Image projection unit and image projection device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment approach 1

[0044] figure 1 It is an exploded view of the image projection unit according to this embodiment. figure 2 yes means figure 1 The configuration of the image projection unit involved and the diagram of the shut-off light emitted from the image projection unit. refer to figure 1 as well as figure 2 , the image projection unit 100 according to this embodiment will be described.

[0045] Such as figure 1 as well as figure 2 As shown, the image projection unit 100 according to this embodiment mainly includes digital micromirror devices 10R, 10G, and 10B as reflective image display elements, a holding member 20, total reflection prisms 40R, 40G, and 40B, and a base member. 50 and color synthesis prism 60.

[0046] Image projecting unit 100 comprises 3 digital micromirror devices 10R, 10G, 10B, and comprises 3 total reflection prisms 40R, 40G, 40B, and through color synthesis prism 60 pair from following light source unit 89 (referring to image 3) emits and is split into ...

Embodiment approach 2

[0092] Figure 7 It is a schematic diagram of the image projection unit according to this embodiment. It should be stated that in Figure 7 Among them, illustration of the digital micromirror devices 10R, 10G, and 10B according to Embodiment 1 is omitted. refer to Figure 7 Image projection unit 100A according to this embodiment will be described.

[0093] Such as Figure 7 As shown, in the image projection unit 100A according to the present embodiment, when compared with the image projection unit 100 according to the first embodiment, the configuration of the holding member 20A is different. About other constitutions, it is almost the same.

[0094] The holding member 20A includes a plurality of holders 2R, 2G, and 2B provided corresponding to each of the plurality of digital micromirror devices 10R, 10G, and 10B. All of the plurality of holders 2R, 2G, and 2B have the same shape. The plurality of holders 2R, 2G, and 2B are respectively bonded and fixed to the color sy...

Embodiment approach 3

[0103] Figure 11 It is a schematic diagram of the image projection unit according to this embodiment. It should be stated that in Figure 11 Among them, illustration of the digital micromirror devices 10R, 10G, and 10B according to Embodiment 1 is omitted. refer to Figure 11 , the image projection unit 100B according to this embodiment will be described.

[0104] Such as Figure 11 As shown, when the image projection unit 100B according to the present embodiment is compared with the image projection unit 100 according to the second embodiment, the configuration of the holding member 20B is different. About other constitutions, it is almost the same.

[0105]The holding member 20B includes a plurality of holding bodies 2R, 2G, and 2B. At least one of the plurality of holders 2R, 2G, and 2B has a different shape from the other holders. Specifically, among the plurality of holders 2R, 2G, and 2B, the holders 2G, 2B have the same shape, and the holder 2R has a different s...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The present invention is equipped with: a light source unit; multiple reflection-type image display elements (10R, 10G, 10B); multiple total reflection prisms (40R, 40G, 40B) that guide multicolored light emitted from the light source unit to the reflection-type image display elements (10R, 10G, 10B), and emit light reflected by the reflection-type image display elements (10R, 10G, 10B); a color synthesis prism (60) that combines and then emits light entering from the total reflection prisms (40R, 40G, 40B); a retaining member (20) that holds the reflection-type image display elements (10R, 10G, 10B) while being affixed to the color synthesis prism (60); and a base member (50) that supports the color synthesis prism (60) and the multiple total reflection prisms (40R, 40G, 40B).

Description

technical field [0001] The invention relates to an image projection unit and an image projection device. Background technique [0002] In recent years, small and lightweight image projection devices have been developed. For example, as disclosed in U.S. Patent No. 7, 144, and 116 (Patent Document 1), this image projection device does not have a heavy Philips prism, but has a total reflection prism, a digital micromirror device, and a color synthesis system. Prism etc. The light split into multiple colors is reflected by the total reflection prism and enters the digital micromirror device. The light reflected toward the color synthesis prism through the digital micromirror device is synthesized by the color synthesis prism, thereby forming an image. [0003] In an image projection device, it is required to project an image with high precision. As a document disclosing an image projection device having a structure different from that disclosed in Patent Document 1, but cap...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
IPC IPC(8): G03B21/14G02B5/04G02B7/18G03B21/00
CPCG02B5/04G03B21/14G02B7/1805G02B27/1026G02B27/126G03B21/008G03B21/2013G03B21/2086G03B33/12
Inventor 右田裕丈平泽洋芳贺大典
Owner KONICA MINOLTA INC