Projection module and projector

A projection module and projector technology, which is applied in the field of projectors, can solve the problems of reducing the volume of the whole machine, achieve the effects of reducing the back focus, reducing production costs, and improving production difficulty
CN113238438APending Publication Date: 2021-08-10NANHUA INTELLIGENT PRECISION MACHNE (SHENZHEN) CO LTD
2 Cites 1 Cited by

Patent Information

Authority / Receiving Office
CN Β· China
Patent Type
Applications(China)
Current Assignee / Owner
NANHUA INTELLIGENT PRECISION MACHNE (SHENZHEN) CO LTD
Publication Date
2021-08-10

Smart Images

  • Figure 1
    Figure 1
  • Figure 2
    Figure 2
  • Figure 3
    Figure 3
Patent Text Reader

Abstract

The invention discloses a projection module, which comprises two or three transmission-type LCD light valves, a light combining device and a projection lens. When the number of the LCD light valves is three, the light combining device is an X prism, and the long side W of the display window of any LCD light valve is parallel to the central intersecting line A of the X prism; and when the number of the LCD light valves is two, light emitted by the first LCD light valve penetrates through the light combining device, and light emitted by the second LCD light valve is reflected by the light combining device. The invention further discloses a projector which comprises the projection module. The manufacturing difficulty of the light combining device can be obviously improved, the relatively low manufacturing cost can be realized, the size of the whole machine can be reduced, the appearance stacking of the whole machine can be changed, the manufacturing cost of the projection lens can be reduced, and the product competitiveness can be improved.
Need to check novelty before this filing date? Find Prior Art

Description

technical field

[0001] The invention relates to the field of projectors, in particular to a projection module and an LCD projector. Background technique

[0002] Such as Figure 5-8 As shown, in a traditional 3LCD projector, the arrangement of the LCD light valve and the light combining device is such that the short side H' of the display window of any LCD light valve is parallel to the intersection line A' of the center of the X prism 2'. In the figure, 1' is the projection lens, 2' is the X prism, 3', 4', and 5' correspond to the LCD light valves displaying red, green, and blue field images respectively, and 50 is the FPC (Flexible Printed Circuit) of the LCD light valve Arranging lines, / / is a parallel symbol (the same below). This ranking method is determined by the development direction and historical accumulation of foreign 3LCD projection technology. In the past 30 years, the size of LCD light valves based on HTPS (High Temperature Poly-Silicon) technology has beco...

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