TWM572461U - Lens element - Google Patents

Abstract

The lens element provided by the present invention is based on a light transmissive body, and a first space is recessed on one of the first end faces of the body, and a second space is recessed The second end surface of the back side of the body is formed as a lens portion by the body between the first space and the second space, so that the lens element can receive the sensing element in the first space. The light signal for sensing or being projected by the light source element in the orthographic projection range of the second space is used for sensing.

Description

Lens element

This creation is related to optical technology, especially with respect to a lens element.

In the application of optical technology, for example, a mouse is a specific phenomenon caused by a signal source on a surface, such as a shadow generated by the visible light of a light-emitting diode on the surface, or a lightning A spot of light formed on the surface is projected, and a change in shadow or a change in light spot on the surface is sensed by the sensing element, and an analysis is made to know the relative motion of the mouse relative to the surface.

However, regardless of the type of light used by the signal source, it is necessary to use an appropriate lens to disperse or polymerize the light so that the light is accurately illuminated or projected at a predetermined position, so that the sensing element can be accurately sensed. However, in the case of the conventional lens technology, for example, the disclosure of the new patent No. M280509 in the prior art, the combination of the lens, the signal source and the sensing element is lacking in the original positioning technology, and therefore, it is required to be assembled. Assembly by additional positioning technology, in addition to the inconvenience of assembly processing, is also susceptible to changes in the relative position between the components due to external forces, resulting in the accuracy of the sensing.

Therefore, the main purpose of the present invention is to provide a lens element which is variable in assembly and stabilizes the relative position between the light source element and the sensing element and the lens to avoid displacement and ensure the accuracy of sensing.

Therefore, in order to achieve the above object, the lens element provided by the present invention is based on a light transmissive body, and a first space is recessed on a first end surface on one side of the body, and a second space is recessed on a second end surface on the opposite side of the body, so that a portion of the first space and the second space is formed as a lens portion, so that the lens element can be A space is provided for accommodating a sensing component therein for sensing an optical signal illuminated by a light source component or projected into an orthographic projection range of the second space.

Further, in order to ensure the correctness of the light illumination or projection position of the light source element, the lens element further includes a third space recessed on the first end surface for receiving the light source component. Light and passing light through the body to the exterior of the body.

Wherein, in order to adjust the position of the light irradiation or projection of the light source element, the surface shape of the second end surface may have the same surface shape as the Fresnel lens.

Moreover, in order to facilitate the assembly process of the lens element, the first end surface may be a flat plane, and a concave or convex structure for positioning may be selectively disposed on the first end surface.

First, referring to the first to third figures, the lens element (10) provided in a preferred embodiment of the present invention is a light-transmitting element integrally formed of a suitable polymer material. The upper part comprises a body (11), a first end surface (12), a second end surface (13), a first space (14), a second space (15), and a pair of third spaces (16). a lens portion (17) and a plurality of positioning recesses (18), wherein:

The body (11) has a cylindrical shape, but has an outer diameter that is smaller at both ends in the axial direction and larger in the middle portion.

The first end surface (12) is a flat circular plane at the end of one end of the column shaft of the body (11).

The second end surface (13) is located at a circular end surface at the end of the other end of the column shaft of the body (11), and is opposite to the first end surface (12), and the surface is opposite to the conventional Fresnel. The lens has the same concavo-convex shape of many concentric circles.

The first space (14) is a straight circular blind hole space extending from the first end surface (12) along the column axis of the body (11) toward the inside of the body (11) at a proper depth, and the hole axis is coupled with the first The center of the end face (12) and the column axis of the body (11) are coaxially corresponding.

The second space (15) is a conical blind hole space extending from the second end surface (13) along the column axis of the body (11) toward the inside of the body, and the hole axis and the second end surface (13) The center of the circle, the column axis of the body (11) and the hole axis of the first space (14) are coaxially corresponding.

The pair of third spaces (16) are respectively recessed symmetrically with respect to the first space (14) on the first end surface (12), and are shaped to receive externalities such as light-emitting diodes. The light generated by the light source element may be in the form of an arc in the present embodiment.

The lens portion (17) is formed by a portion of the first space (14) and the closed end of the second space (15) which are in a blind hole shape, corresponding to the body (11) portion, and In order to allow the light to be polymerized, the lens portion (17) may be in the shape of a convex lens.

The positioning recesses (18) are respectively recessed on the first end surface (12) for easy assembly and positioning when the lens element (10) is assembled with an external component.

Next, as shown in the fourth to sixth figures, the lens element (10) can be assembled on a circuit board (30) by the one end seat (20) when in use.

Specifically, the lens element (10) is embedded on the end seat (20) with one end of the column shaft of the body (11), and the positioning recess (18) and the end seat (20) The positioning projections (21) are engaged with each other so that the lens element (10) can be quickly and accurately coupled to the end seat (20), at the same time:

Two light emitting diodes (31) fixed on the circuit board (30) are respectively located in the two corresponding through holes (22) on the end seat (20), and the generated light is passed through the adjacent ones. a third space (16) enters the body (11) and reaches the second end face (13) via the body (11) that transmits light, and focuses on the second space (15) in the axial direction of the hole axis Within the range of orthographic projection;

The sensing component (not shown) fixed to the circuit board (30) extends into the first space (14) along with a portion (201) of the terminal block (20) for sensing via The lens portion (17) collects the optical signals from the second space (15) to achieve the purpose of sensing.

In summary, the lens element (10) can be combined with the circuit board (30) at the same time as the end portion (20), and the lens portion (17) can be assembled at the same time by assembly. The light-emitting diodes (31) as the light source elements and the relative positions of the sensing elements are positioned to each other, and since the lens elements (10) are tightly and firmly bonded to the circuit board (30), Therefore, even if there is vibration in use, the relative positions of the components are not changed, so that the lens component (10) can not only achieve the quick and easy assembly, but also ensure the adjacent components. The stable relative position of each other, compared to the prior art, the technology provided by this creation has a significant improvement in efficacy.

In addition, the specific technical content required in the above embodiments is only used to explain the technical features of the present invention, and the scope of the present invention should be protected, for example, the first In addition to the surface shape of the Fresnel lens, the second end surface can also be a spherical or aspherical lens surface shape, and the lens portion can be in the shape of a convex lens or a concave lens; The upper embodiment is configured to receive the concave arc shape formed by the recessed third space of the light-solid structure generated by the light source component, but the creation is not limited thereto, and the recess may be The third space is changed to a convex structure protruding from the second end surface. In view of this, the light can be appropriately reflected, polymerized or dispersed according to the actual optical conditions and appropriately changed in shape. The scope of protection of this creation should be based on the scope of the patent application in this case.

(10) ‧‧‧ lens components

(11) ‧‧‧ Ontology

(12) ‧‧‧ first end face

(13)‧‧‧second end face

(14) ‧‧‧First space

(15) ‧‧‧Second space

(16) ‧‧‧The third space

(17)‧‧‧ lens department

(18)‧‧‧Positioning concave

(20) ‧‧‧Terminal

(201) ‧ ‧ part of the terminal

(21)‧‧‧Positioning convexity

(30)‧‧‧ boards

(31)‧‧‧Lighting diodes

The first figure is a perspective view of a preferred embodiment of the present invention. The second drawing is a top view of a preferred embodiment of the present invention. The third drawing is a cross-sectional view of a preferred embodiment of the present invention along the cut line of the first drawing 3-3. The fourth figure is a perspective view of a state of use of a preferred embodiment of the present invention. The fifth drawing is an exploded view of the state of use of a preferred embodiment of the present invention. Figure 6 is a cross-sectional view of the preferred embodiment of the present invention along the cut line of Figure 6-6.

Claims (10)

A lens element includes: a light transmissive body; a first end surface on one side of the body; a second end surface on the other side of the body opposite to the first end surface; a first space, a first space is recessed in the body; a second space is recessed from the second end surface in the body; a lens portion is disposed between the first space and the first body The two parts of the space are formed. The lens element of claim 1, further comprising at least one third space recessed on the first end surface and spaced apart from the first space. The lens element of claim 2, wherein the number of the third spaces is one or two, and is symmetrically disposed on one or both sides of the first space centered on the first space. The lens element of claim 2 or 3, wherein the first space is for housing a sensing element. The lens element of claim 1, wherein the first space is in the shape of a circular hole. The lens element of claim 1, wherein the second space is in the shape of a conical hole. The lens element of claim 1, wherein the second end face is circular and the geometric center of the second space is located on the center of the circle. The lens element according to claim 1, wherein the surface shape of the second end surface is the same as the surface shape of the Fresnel lens. The lens element of claim 1, wherein the lens portion is a convex lens. The lens element of claim 1, wherein the first end face is a flat circular plane and the geometric center of the first space is located on the center of the circle.