CN212379709U

CN212379709U - Special lens for single liquid crystal projector

Info

Publication number: CN212379709U
Application number: CN202021277017.9U
Authority: CN
Inventors: 徐逸
Original assignee: Xingguangpu Technology Chengdu Co ltd
Current assignee: Xingguangpu Technology Chengdu Co ltd
Priority date: 2020-07-03
Filing date: 2020-07-03
Publication date: 2021-01-19
Anticipated expiration: 2030-07-03

Abstract

The utility model discloses a special lens of single liquid crystal projector, including three spherical lenses of specific curvature radius and specific glass material and be used for fixing the fixed bolster structure that three spherical lenses used, three spherical lenses are installed side by side in proper order through the fixed bolster structure, all form a clearance chamber of specific distance between the adjacent spherical lens, wherein three spherical lenses are first spherical lens, second spherical lens and third spherical lens respectively; the utility model discloses constitute by 3 spherical lens and the fixed structure of this 3 lenses, as its projection objective, have simple structure, low cost, small, characteristics that resolution ratio is high.

Description

Special lens for single liquid crystal projector

Technical Field

The utility model relates to an optics field, concretely relates to special camera lens of single liquid crystal projector.

Background

Because the single liquid crystal projector is low in price, a fixed-focus lens is generally adopted, and therefore different lenses are needed for liquid crystal screens with different sizes and projectors with different projection ratios. In recent years, due to the rapid development of liquid crystal screens and the diversification of market demands, a projection lens with a maximum supported size of 3.0 inches and a resolution of 1280X720 is required.

When designing a projector lens, factors such as cost, resolution, brightness, contrast and the like of the lens need to be considered, and the structure and application scene of the projector need to be considered, so that the projector lens is simple in appearance, is not easy, and needs to pay hard innovation.

Disclosure of Invention

The utility model aims to solve the technical problem that a special camera lens of single liquid crystal projector through specific radius of curvature, glass lens interval and glass material, can effectively solve not enough among the prior art.

The utility model discloses a realize through following technical scheme: a lens special for a single liquid crystal projector comprises three spherical lenses and a fixing support structure for fixing the three spherical lenses, wherein the three spherical lenses are sequentially arranged side by side through the fixing support structure, a clearance cavity is formed between every two adjacent spherical lenses, and at least three spherical lenses are respectively a first spherical lens, a second spherical lens and a third spherical lens; the spherical radii of the first spherical lens, the second spherical lens and the third spherical lens are as follows in sequence: 44.17mm, 278.961mm, -74.895mm, 44.6800mm, 108.4130mm, -55.9490 mm; the central thickness thereof is as follows: 6.3mm, 3.0mm, 7.8 mm; the intervals between them are as follows: 13.4222mm, 6.7393mm, and 37.2615mm in total length of the 3-piece spherical lens combination. The correlation data allows for a 5% error.

Preferably, the first spherical lens, the second spherical lens and the third spherical lens are made of CDGM H-ZK11, CDGM H-F4 and CDGM H-ZK11, respectively.

As a preferred technical solution, the fixed support structure includes a supporting body, a first space ring and a second space ring, at least three spherical lenses include a first spherical lens, a second spherical lens and a third spherical lens, the second spherical lens is disposed between the first space ring and the second space ring, the first spherical lens is disposed at an outer side end of the first space ring, the third spherical lens is disposed at an outer side end of the second space ring, the fixed support structure further includes a tightening pressing ring, and the tightening pressing ring is locked with the supporting body and presses a side surface of the outermost first spherical lens.

As a preferred technical solution, the fixing support structure further includes a tightening pressing ring, and the tightening pressing ring is locked with the supporting body and presses a side surface of the outermost first spherical lens.

The utility model has the advantages that: the utility model discloses constitute as its projection objective by 3 spherical lens and the structure of fixed this 3 lenses, have simple structure, low cost, small, characteristics that resolution ratio is high.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.

Fig. 1 is a schematic view of the overall structure of the present invention; fig. 2 is a layout diagram of the spherical lens of the present invention.

Detailed Description

All of the features disclosed in this specification, or all of the steps in any method or process so disclosed, may be combined in any combination, except combinations of features and/or steps that are mutually exclusive.

Any feature disclosed in this specification (including any accompanying claims, abstract and drawings), may be replaced by alternative features serving equivalent or similar purposes, unless expressly stated otherwise. That is, unless expressly stated otherwise, each feature is only an example of a generic series of equivalent or similar features.

In the description of the present invention, it is to be understood that the terms "one end", "the other end", "the outside", "upper", "inside", "horizontal", "coaxial", "central", "end", "length", "outer end", etc. indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.

Furthermore, in the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.

The use of terms herein such as "upper," "above," "lower," "below," and the like in describing relative spatial positions is for the purpose of facilitating description to describe one element or feature's relationship to another element or feature as illustrated in the figures. The spatially relative positional terms may be intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. For example, if the device in the figures is turned over, elements described as "below" or "beneath" other elements or features would then be oriented "above" the other elements or features. Thus, the exemplary term "below" can encompass both an orientation of above and below. The device may be otherwise oriented (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.

In the present invention, unless otherwise explicitly specified or limited, the terms "set", "coupled", "connected", "penetrating", "plugging", and the like are to be understood in a broad sense, and may be, for example, fixedly connected, detachably connected, or integrated; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

As shown in fig. 1 and 2, the three-lens spherical lens array comprises three spherical lenses and a fixing support structure for fixing the three spherical lenses, wherein the three spherical lenses are sequentially mounted side by side through the fixing support structure, and a clearance cavity is formed between every two adjacent spherical lenses, wherein at least three spherical lenses are respectively a first spherical lens, a second spherical lens and a third spherical lens; the spherical radii of the first spherical lens, the second spherical lens and the third spherical lens are as follows in sequence: 44.17mm, 278.961mm, -74.895mm, 44.6800mm, 108.4130mm, -55.9490 mm; the central thickness thereof is as follows: 6.3mm, 3.0mm, 7.8 mm; the intervals between them are as follows: 13.4222mm, 6.7393mm, and 37.2615mm in total length of the 3-piece spherical lens combination. The correlation data allows for a 5% error.

The first spherical lens, the second spherical lens and the third spherical lens are made of CDGM H-ZK11, CDGM H-F4 and CDGM H-ZK11 respectively.

The fixed support structure comprises a bearing body and a first space ring 2, a second space ring 3, three spherical lenses comprise a first spherical lens L1, a second spherical lens L2 and a third spherical lens L3, the second spherical lens L2 is arranged between the first space ring 2 and the second space ring 3, the first spherical lens L1 is arranged at the outer side end of the first space ring 2, the third spherical lens L3 is arranged at the outer side end of the second space ring 3, the fixed support structure further comprises a screwing pressing ring 1, and the screwing pressing ring 1 is locked with the bearing body 4 and tightly presses one side face of the first spherical lens L1 at the outermost part. During assembly, the third spherical lens L3 is mounted in the carrier 4, the second spacer 3 is mounted, the second spherical lens L2, the first spacer 2 and the first spherical lens L1 are sequentially mounted, and the pressing ring 1 is screwed.

The utility model discloses when using, need use a slice 3.0 inch LCD screen, its resolution ratio is 1280X720, as projection lens's object plane, through the camera lens (the utility model discloses) formation of image, the image picture reaches.

The above description is only for the specific embodiments of the present invention, but the scope of the present invention is not limited thereto, and any changes or substitutions that are not thought of through the creative work should be covered within the scope of the present invention. Therefore, the protection scope of the present invention should be subject to the protection scope defined by the claims.

Claims

1. The special lens of a kind of single liquid crystal projector, characterized by: the three spherical lenses are sequentially arranged side by side through the fixing support structure, a clearance cavity is formed between every two adjacent spherical lenses, and the three spherical lenses are respectively a first spherical lens, a second spherical lens and a third spherical lens; the spherical radii of the first spherical lens, the second spherical lens and the third spherical lens are as follows in sequence: 44.17mm, 278.961mm, -74.895mm, 44.6800mm, 108.4130mm, -55.9490 mm; the central thickness thereof is as follows: 6.3mm, 3.0mm, 7.8 mm; the intervals between them are as follows: 13.4222mm, 6.7393mm, and the total length of the 3 spherical lens combination is 37.2615 mm; the first spherical lens, the second spherical lens and the third spherical lens are made of CDGM H-ZK11, CDGM H-F4 and CDGM H-ZK11 respectively.

2. The lens special for the single liquid crystal projector as claimed in claim 1, wherein: the fixed support structure comprises a bearing body, a first space ring and a second space ring, the three spherical lenses comprise a first spherical lens, a second spherical lens and a third spherical lens, the second spherical lens is arranged between the first space ring and the second space ring, the first spherical lens is arranged at the outer side end of the first space ring, and the third spherical lens is arranged at the outer side end of the second space ring.

3. The lens special for the single liquid crystal projector as claimed in claim 2, wherein: the fixing support structure further comprises a screwing pressing ring, and the screwing pressing ring is locked with the bearing body and tightly presses one side face of the outermost first spherical lens.