CN205880338U

CN205880338U - Projection lens

Info

Publication number: CN205880338U
Application number: CN201620790092.2U
Authority: CN
Inventors: 许法卿
Original assignee: Guangzhou Dasen Lighting Electronics Ltd
Current assignee: Guangzhou Dasen Lighting Electronics Ltd
Priority date: 2016-07-25
Filing date: 2016-07-25
Publication date: 2017-01-11
Anticipated expiration: 2026-07-25

Abstract

The utility model discloses a projection lens relates to the optical lens field. Projection lens including biconvex lens, the 2nd plano -convex lens, pattern piece, a plano -convex lens, the collector lens of coaxial setting in proper order, collector lens's one side is the convex surface, and the another side is the concave surface, collector lens's convex surface corresponds a plano -convex lens's plane, and a plano -convex lens's convex surface corresponds the 2nd plano -convex lens's plane, the pattern piece on be equipped with the pattern hole, active partition on be equipped with and inlay the hole, the biconvex lens setting inlay downthehole. The utility model discloses the nature projection lens, set up one and do benefit to the collector lens who collects light between a LED light source and a plano -convex lens, can collector lens's income light concave surface design satisfy 10 the application of 60wLED light source only needs to change LED light source and pattern piece and can satisfy not same distance, different application of using the leading pattern effect in place, greatly reduced lamps and lanterns cost and R&D cycle.

Description

A kind of projection lens

Technical field

This utility model relates to field of optical lens, particularly relates to a kind of projection lens.

Background technology

Current compact entertainment place effect class light fixture focuses pattern lamp projection lens and is mainly used in below 10W monochrome LED light source, this camera lens brightness is low, projection distance is remote not, poor compatibility, cannot meet use greater power, higher stream The requirement that the monochrome of bright output or multi-colored led light fixture update.

Summary of the invention

For the problems referred to above, this utility model provides a kind of projection lens, and concrete scheme is as follows:

A kind of projection lens, including the biconvex lens sequentially coaxially arranged, the second planoconvex lens, pattern segments, the first plano-convex Lens, collecting lens；The one side of described collecting lens is convex surface, and another side is concave surface；The convex surface correspondence of described collecting lens The plane of one planoconvex lens, the plane of corresponding second planoconvex lens of the convex surface of the first planoconvex lens；Described pattern segments is provided with Pattern hole；Described movable disk is provided with embedding hole, and described biconvex lens is arranged in embedding hole.

Further, the radius of curvature of described collecting lens convex surface is 5-10mm, preferably 6mm.Collecting lens concave surface Radius of curvature is 14-20mm, preferably 16mm.

Further, the radius of curvature of the convex surface of described first planoconvex lens is 9-13mm, preferably 10.8mm.

Further, the radius of curvature of the convex surface of described second planoconvex lens is 9-13mm, preferably 10.8mm.

Preferably, the radius of curvature of the convex surface of the radius of curvature of the convex surface of described second planoconvex lens and the first planoconvex lens Identical.

Further, the convex radius of described biconvex lens is 65-75mm, preferably 69.53mm.

Preferably, the second planoconvex lens and biconvex lens are together to form the image optics combination of an equivalent focal length.

Further, the aperture of described pattern hole is 14-19mm, preferably 15mm.

Further, the spacing between the plane of described pattern segments and the second planoconvex lens is 0-0.5mm；Preferably, figure Case sheet is by the sticker plane together in the second planoconvex lens of fitting, and the thickness of laminating glue-line is 0.1-0.5mm.

Further, described pattern segments is provided with pattern assembly in pattern hole.

The projection lens of this utility model, sets up one between LED light source and the first planoconvex lens and is beneficial to collect light The collecting lens of line, entering light concave design and can meeting the application of 10-60w LED light source of collecting lens, only need to change LED light source Or pattern segments can meet the application of leading pattern effect in different distance, different application place, be substantially reduced light fixture cost and R&D cycle.

Accompanying drawing explanation

Fig. 1 is the structure chart of pattern lamp in this utility model embodiment.

Fig. 2 is the axial sectional view of pattern lamp in this Fig. 1.

Fig. 3 is the explosive view of pattern lamp in this utility model embodiment.

Detailed description of the invention

In order to more fully understand technology contents of the present utility model, below in conjunction with specific embodiment to skill of the present utility model Art scheme is further described and illustrates.

Embodiment

Pattern lamp as Figure 1-3, including projection lens and LED light source.

Projection lens includes coaxially biconvex lens the 7, second planoconvex lens 6, the pattern segments that (dotted line in Fig. 3) set gradually 5, the first planoconvex lens 4, collecting lens 3.The one side of collecting lens 3 is convex surface, and another side is concave surface.The convex surface of collecting lens 3 Relative with the plane of the first planoconvex lens 4, the convex surface of the first planoconvex lens 4 and the plane of the second planoconvex lens 6 are relative.Pattern segments 5 by the sticker plane together in the second planoconvex lens 6 of fitting, and the thickness of laminating glue-line is 0.3mm.The center of pattern segments 5 is provided with Pattern hole, the aperture of pattern hole is 15mm.According to the actual needs, pattern assembly can be set in pattern hole and stop light, with Projection pattern needed for acquisition, and different camera lenses can use different pattern assemblies.

The biconvex lens 7 of each projection lens clamps the limit of biconvex lens 7 by the first sheet metal component 91 and the second sheet metal component 92 Along to be fixed in embedding hole.The sphere curvature radius on biconvex lens 7 two sides is 69.53mm.

The sphere curvature radius of the second planoconvex lens 6 of each projection lens is 10.8mm, and the lower end of sphere is provided with for card Gu the edge 61 of the second planoconvex lens 6.Second planoconvex lens 6 can be together to form an equivalent focal length with biconvex lens 7 Image optics combines.

The sphere curvature radius of the first planoconvex lens 4 of each projection lens is 10.8mm, and the lower end of sphere is provided with for card Gu the edge 41 of the first planoconvex lens 4.

The sphere curvature radius of collecting lens 3 convex surface is 6mm, and the radius of curvature of concave surface 32 is 16mm, and the lower end of convex surface sets There is the edge 31 for fixing convex 3.

The concave surface 32 of LED light source correspondence collecting lens 3, including aluminium base 1 and the LED 2 being arranged on aluminium base 1.Optically focused The light inlet footpath of lens 3 concave surface 32 is 2.5-5 times of LED light source maximum light-emitting area size.

The light of the LED 2 of above-mentioned pattern lamp is injected by the concave surface 32 of collecting lens 3, penetrates from the convex surface of collecting lens 3, Light is entered the first planoconvex lens 4 optically focused again after collecting lens 3 optically focused, reflect angle after the first planoconvex lens 4 For the light beam directive pattern segments 5 of 15-20 °, the light that now peripheral energy is more weak can be blocked by pattern segments and lens barrel and absorb, greatly Some light is by pattern assembly directive the second planoconvex lens 6 in pattern hole that internal diameter is 15 or pattern hole, and light is through Becoming close to collimation collimated light beam after two planoconvex lenss 6, the second planoconvex lens 6 now is while playing condenser lens function, also The image optics being together to form an equivalent focal length with biconvex lens 7 being combined, pattern hole or pattern assembly are through so One group of imaging lens just can realize the projection image of far and near distance.

Above-mentioned pattern lamp, sets up the optically focused being beneficial to collect light saturating between LED light source and the first planoconvex lens 4 Mirror 3, the incidence surface of collecting lens 3 uses concave design can meet the application of 10-60w LED light source, only need to change LED light source and Pattern segments just can meet the application of the leading pattern effect in different distance, different application place, is substantially reduced light fixture cost and grinds The cycle of sending out.

The above only further illustrates technology contents of the present utility model with embodiment, in order to reader is easier to reason Solving, but do not represent embodiment of the present utility model and be only limitted to this, any technology done according to this utility model extends or creates Make, all by protection of the present utility model.

Claims

1. a projection lens, it is characterised in that the biconvex lens that includes sequentially coaxially arranging, the second planoconvex lens, pattern segments, First planoconvex lens, collecting lens；The one side of described collecting lens is convex surface, and another side is concave surface；Described collecting lens convex The plane of corresponding first planoconvex lens in face, the plane of corresponding second planoconvex lens of the convex surface of the first planoconvex lens；Described pattern Sheet is provided with pattern hole.

Projection lens the most according to claim 1, it is characterised in that the radius of curvature of described collecting lens convex surface is 5- 10mm；The radius of curvature of collecting lens concave surface is 14-20mm.

Projection lens the most according to claim 2, it is characterised in that the radius of curvature of the convex surface of described first planoconvex lens For 9-13mm.

Projection lens the most according to claim 3, it is characterised in that the radius of curvature of the convex surface of described second planoconvex lens For 9-13mm.

Projection lens the most according to claim 4, it is characterised in that the radius of curvature of the convex surface of described second planoconvex lens Identical with the radius of curvature of the convex surface of the first planoconvex lens.

Projection lens the most according to claim 5, it is characterised in that the radius of curvature of the convex surface of described second planoconvex lens For 10.8mm.

Projection lens the most according to claim 3, it is characterised in that the convex radius of described biconvex lens is 65- 75mm。

8. according to the projection lens described in claim 1-7 any one, it is characterised in that the aperture of described pattern hole is 14- 19mm。

Projection lens the most according to claim 8, it is characterised in that the plane of described pattern segments and the second planoconvex lens it Between spacing be 0-0.5mm.

Projection lens the most according to claim 9, it is characterised in that be provided with pattern groups in pattern hole in described pattern segments Part.