CN210572979U

CN210572979U - Special lens for single liquid crystal projector

Info

Publication number: CN210572979U
Application number: CN201921706608.0U
Authority: CN
Inventors: 徐逸
Original assignee: Xingguangpu Technology Chengdu Co ltd
Current assignee: Xingguangpu Technology Chengdu Co ltd
Priority date: 2019-10-12
Filing date: 2019-10-12
Publication date: 2020-05-19
Anticipated expiration: 2029-10-12

Abstract

The utility model discloses a special camera lens of single liquid crystal projector, including six spherical lenses and be used for the fixed bolster structure that six spherical lenses used, six spherical lenses install side by side in proper order through the fixed bolster structure, all form a clearance chamber between the adjacent spherical lens, wherein six spherical lenses are first spherical lens, second spherical lens, third spherical lens, fourth spherical lens, fifth spherical lens and sixth spherical lens respectively, the radius of curvature is positive when optical glass is convex, the radius of curvature is negative when optical glass is concave; the utility model discloses constitute by 6 spherical lens and the structure of fixed this 6 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 rapid development of liquid crystal panels and diversification of market demands, a projection lens with a maximum supported size of 6.0 inches and a resolution of 1920 × 1080 is required, and the existing projection lens cannot be used satisfactorily.

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 six spherical lenses and a fixing support structure used for fixing the six spherical lenses, wherein the six spherical lenses are sequentially installed side by side through the fixing support structure, a clearance cavity is formed between every two adjacent spherical lenses, the six spherical lenses are respectively a first spherical lens, a second spherical lens, a third spherical lens, a fourth spherical lens, a fifth spherical lens and a sixth spherical lens, the curvature radius is positive when the optical glass is convex, and the curvature radius is negative when the optical glass is concave; the curvature radius of the first spherical lens is 74.710 mm and-32.720 mm, and the distance between the center points of the first spherical lens and the second spherical lens is 23.5 mm; the curvature radius of the second spherical lens is 51.997 mm and-1.3.200 mm, and the distance between the central points of the second spherical lens and the third spherical lens is 16.6223 mm; the curvature radius of the third spherical lens is 85.526 mm and 128.03 mm, and the center point interval of the third spherical lens and the fourth spherical lens is 8.064 mm; the curvature radius of the fourth spherical lens is-61.957 mm and-111.198 mm, and the interval between the center points of the fourth spherical lens and the fifth spherical lens is 4.6132 mm; the curvature radius of the fifth spherical lens is-99.278 mm and 39.529 mm, and the distance between the center points of the fifth spherical lens and the sixth spherical lens is 0.15 mm; the sixth spherical lens has a radius of curvature of-467.584 mm and 83.100 mm.

Wherein, the total length of the lens is 68.2 mm.

As a preferable technical scheme, the glass material brand of the first spherical lens is CDGM H-K9L, the glass material brand of the second spherical lens is CDGM H-ZF2, the glass material brand of the third spherical lens is CDGM H-ZK11, the glass material brand of the fourth spherical lens is CDGM H-ZF2, the glass material brand of the fifth spherical lens is CDGM H-ZK11, and the glass material brand of the sixth spherical lens is CDGM H-ZK 11.

Preferably, the fixing bracket structure includes a supporting body, a first space ring, a second space ring, a third space ring and a screwing pressing ring, the first, second and third space rings are all arranged inside the supporting body, and the first, second, third, fourth, fifth and sixth spherical lenses are arranged among more than one space ring, positioned and fixed and separated by the space rings.

As a preferred technical scheme, the first spherical lens and the second spherical lens are arranged between the first space rings, the outer ends of the first spherical lens and the second spherical lens are tightly pressed by screwing the pressing rings and threads, and the third spherical lens is arranged between the first space rings and the second space rings and is positioned and tightly pressed; the fifth spherical lens is arranged on the positioning step between the second space ring and the third space ring, and the fourth spherical lens is arranged between the third spherical lens and the fifth spherical lens; one end of the fourth spherical lens is arranged on the positioning step on the second space ring, and the other end of the fourth spherical lens is in contact positioning with the fifth spherical lens which is fixedly positioned; one end of the sixth spherical lens is positioned and installed on the positioning step of the third space ring, the spherical surface at the other end is limited and fixed through the limiting ring on the bearing body, and one side of the spherical convex surface of the fifth spherical lens is in contact with one side of the sixth spherical lens.

The utility model has the advantages that: the utility model discloses constitute by 6 spherical lens and the structure of fixed this 6 lenses, as its projection objective, 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.

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, the utility model discloses a single special camera lens of liquid crystal projector, include six spherical lenses and be used for the fixed bolster structure that six spherical lenses used, six spherical lenses are installed side by side in proper order through the fixed bolster structure, all form a clearance cavity between the adjacent spherical lens, wherein six spherical lenses are first spherical lens L1, second spherical lens L2, third spherical lens L3, fourth spherical lens L4, fifth spherical lens L5 and sixth spherical lens L6 respectively, the radius of curvature is positive when optical glass is convex, the radius of curvature is negative when optical glass is concave; the curvature radius of the first spherical lens L1 is 74.710 mm and-32.720 mm, and the distance between the center points of the first spherical lens and the second spherical lens is 23.5 mm; the curvature radius of the second spherical lens L2 is 51.997 mm and-1.3.200 mm, and the distance between the center points of the second spherical lens and the third spherical lens is 16.6223 mm; the curvature radius of the third spherical lens L3 is 85.526 mm and 128.03 mm, and the distance between the center points of the third spherical lens and the fourth spherical lens is 8.064 mm; the curvature radius of the fourth spherical lens L4 is-61.957 mm and-111.198 mm, and the distance between the central points of the fourth spherical lens and the fifth spherical lens is 4.6132 mm; the curvature radius of the fifth spherical lens L5 is-99.278 mm and 39.529 mm, and the distance between the center points of the fifth spherical lens and the sixth spherical lens is 0.15 mm; the radius of curvature of the sixth spherical lens L6 is-467.584 mm and 83.100 mm.

Wherein, the total length of the lens is 68.2 mm.

In this embodiment, the first spherical lens has a glass material brand of CDGM H-K9L, the second spherical lens has a glass material brand of CDGM H-ZF2, the third spherical lens has a glass material brand of CDGM H-ZK11, the fourth spherical lens has a glass material brand of CDGM H-ZF2, the fifth spherical lens has a glass material brand of CDGM H-ZK11, and the sixth spherical lens has a glass material brand of CDGM H-ZK 11.

The fixing support structure comprises a bearing body 03, a first space ring 02, a second space ring 04, a third space ring 05 and a screwing pressing ring 01, the first space ring, the second space ring and the third space ring are all arranged inside the bearing body 03, and the first spherical lens, the second spherical lens, the third spherical lens, the fourth spherical lens, the fifth spherical lens and the sixth spherical lens are arranged among more than one space ring and are fixedly positioned and separated through the space rings. The first spherical lens and the second spherical lens are arranged between the first space rings, the outer ends of the first spherical lens and the second spherical lens are tightly pressed by screwing the pressing rings and threads, and the third spherical lens L3 is arranged between the first space rings and the second space rings and is positioned and tightly pressed; a fifth spherical lens L5 is mounted on the positioning step between the second and third spacers, and a fourth spherical lens L4 is mounted between the third spherical lens L3 and the fifth spherical lens L5; one end of a fourth spherical lens L4 is mounted on a positioning step on the second space ring 04, and the other end of the fourth spherical lens L4 is in contact positioning with a fifth spherical lens L5 which is fixedly positioned; one end of the sixth spherical lens L6 is positioned and mounted on the positioning step of the third spacer 05, the spherical surface at the other end is limited and fixed by the limiting ring on the bearing body, and one side of the spherical convex surface of the fifth spherical lens L5 is in contact with one side of the sixth spherical lens L6.

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 optical glass comprises six spherical lenses and a fixing support structure for fixing the six spherical lenses, wherein the six spherical lenses are sequentially arranged side by side through the fixing support structure, a clearance cavity is formed between every two adjacent spherical lenses, the six spherical lenses are respectively a first spherical lens, a second spherical lens, a third spherical lens, a fourth spherical lens, a fifth spherical lens and a sixth spherical lens, the curvature radius is positive when the optical glass is convex, and the curvature radius is negative when the optical glass is concave; the curvature radius of the first spherical lens is 74.710 mm and-32.720 mm, and the distance between the center points of the first spherical lens and the second spherical lens is 23.5 mm; the curvature radius of the second spherical lens is 51.997 mm and-1.3.200 mm, and the distance between the central points of the second spherical lens and the third spherical lens is 16.6223 mm; the curvature radius of the third spherical lens is 85.526 mm and 128.03 mm, and the center point interval of the third spherical lens and the fourth spherical lens is 8.064 mm; the curvature radius of the fourth spherical lens is-61.957 mm and-111.198 mm, and the interval between the center points of the fourth spherical lens and the fifth spherical lens is 4.6132 mm; the curvature radius of the fifth spherical lens is-99.278 mm and 39.529 mm, and the distance between the center points of the fifth spherical lens and the sixth spherical lens is 0.15 mm; the sixth spherical lens has a radius of curvature of-467.584 mm and 83.100 mm.

2. The lens special for the single liquid crystal projector as claimed in claim 1, wherein: the glass material brand of the first spherical lens is CDGM H-K9L, the glass material brand of the second spherical lens is CDGM H-ZF2, the glass material brand of the third spherical lens is CDGM H-ZK11, the glass material brand of the fourth spherical lens is CDGM H-ZF2, the glass material brand of the fifth spherical lens is CDGM H-ZK11, and the glass material brand of the sixth spherical lens is CDGM H-ZK 11.

3. 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, a second space ring, a third space ring and a screwing pressing ring, wherein the first space ring, the second space ring and the third space ring are all arranged inside the bearing body, and the first spherical lens, the second spherical lens, the third spherical lens, the fourth spherical lens, the fifth spherical lens and the sixth spherical lens are arranged among more than one space ring and are fixedly positioned and separated through the space rings.

4. The lens special for the single liquid crystal projector as claimed in claim 3, wherein: the first spherical lens and the second spherical lens are arranged between the first space rings, the outer ends of the first spherical lens and the second spherical lens are tightly pressed by screwing pressing rings and threads, and the third spherical lens is arranged between the first space rings and the second space rings and is positioned and tightly pressed; the fifth spherical lens is arranged on the positioning step between the second space ring and the third space ring, and the fourth spherical lens is arranged between the third spherical lens and the fifth spherical lens; one end of the fourth spherical lens is arranged on the positioning step on the second space ring, and the other end of the fourth spherical lens is in contact positioning with the fifth spherical lens which is fixedly positioned; one end of the sixth spherical lens is positioned and installed on the positioning step of the third space ring, the spherical surface at the other end is limited and fixed through the limiting ring on the bearing body, and one side of the spherical convex surface of the fifth spherical lens is in contact with one side of the sixth spherical lens.