CN218272889U

CN218272889U - Receiving lens applied to sensing detection

Info

Publication number: CN218272889U
Application number: CN202222572850.1U
Authority: CN
Inventors: 王维虎
Original assignee: Shenzhen Ruiguangda Photoelectric Co ltd
Current assignee: Shenzhen Ruiguangda Photoelectric Co ltd
Priority date: 2022-09-27
Filing date: 2022-09-27
Publication date: 2023-01-10
Anticipated expiration: 2032-09-27

Abstract

The utility model discloses a be applied to receiving lens that sensing detected belongs to sensing detection lens technical field, including receiving the lens body, receiving the lens body and including base panel, first lenticule and second lenticule, the side is equipped with first lenticule and second lenticule respectively around the base panel, the lateral surface of base panel top and bottom is equipped with first extension lug and second extension lug respectively, be equipped with the separate face groove between first extension lug medial surface and the second lenticule top side, a body coupling at the bottom of second extension lug and the second lenticule. The utility model discloses connect and set the second lens body to refraction inclined plane and high-order aspheric lens, off-axis coma and astigmatic not enough that can the effectual traditional lens light refraction of reduction exist improve the light beam and form the refraction scope of different angles on the refraction inclined plane, shorten the light response blind area, promote the collar density that light beam propagation and refraction received.

Description

Receiving lens applied to sensing detection

Technical Field

The utility model belongs to the technical field of sensing detection lens, a receive lens who is applied to sensing detection is related to.

Background

In the related optical sensing detection, an optical signal emitted by the light source body is transmitted to the detection surface and then reflected to the sensor with the receiving function to obtain signal induction, but the reflected angle enables the sensor and the light source body to be far enough to receive the signal induction, so that a dead zone which cannot be induced exists in a close range. Generally, the detection distance of the sensor relative to the light source body is 10mm-250mm, so that the sensor can better receive a sensing signal, and the detection sensitivity is better; when the detection distance is less than 10mm, the sensor cannot receive a light reflection signal, and the situation that the detection cannot be carried out exists.

SUMMERY OF THE UTILITY MODEL

The utility model provides a be applied to receiving lens that sensing detected aims at solving the reflection among the optical sensing detection and makes between sensor and the light source body enough far can receive the signal response, leads to there being the problem of the blind area of unable response in closely scope.

In order to achieve the above object, the utility model provides a be applied to receiving lens that sensing detected, include: the receiving lens body comprises a base bottom panel, a first lens body and a second lens body, wherein the front side and the rear side of the base bottom panel are respectively provided with the first lens body and the second lens body, the outer side faces of the top and the bottom of the base bottom panel are respectively provided with a first extension lug and a second extension lug, a separation face groove is formed between the inner side face of the first extension lug and the top side face of the second lens body, the second extension lug is integrally connected with the bottom of the second lens body, and the base bottom panel is integrally connected with the first lens body, the second lens body, the first extension lug and the second extension lug to form a single receiving lens.

Preferably, the receiving surface of the first lens body is provided with a first optical curved surface of a convex lens to diffuse a light refraction range.

Preferably, the second lens body is provided with a refraction inclined plane, and the refraction inclined plane is a second optical curved surface.

Preferably, the first optical curved surface and the second optical curved surface are high-order aspheric free-form surfaces.

Preferably, the higher order of the higher order aspheric free-form surface is 16.

Preferably, the first extending projection is integrally connected with a side surface of the second lens body to form 2 spaced assembling cylinders.

Preferably, when the transverse distance of the receiving lens body relative to the preset detection surface is a first preset distance, and the longitudinal distance of the receiving lens body relative to the preset light beam emitting end is a second preset distance, the light beam is refracted to the receiving lens body through the detection surface to realize sensing signal reception.

The utility model discloses for prior art's beneficial effect:

the utility model provides a be applied to receiving lens that sensing detected, receiving lens body adopt high order aspheric lens and second lens body to set to the refraction inclined plane, can effectual reduction traditional lens light refraction exist off-axis coma and astigmatic not enough, improve the light beam and form the refraction scope of different angles on the refraction inclined plane, shorten the light response blind area, promote the light beam and propagate and the neck density that the refraction was received.

To illustrate the structural features and functions of the present invention more clearly, the present invention will be described in detail with reference to the accompanying drawings and specific embodiments.

Drawings

Fig. 1 is a schematic perspective view of a receiving lens for sensing detection according to the present invention;

fig. 2 is a schematic top view of a receiving lens for sensing and detecting according to the present invention;

FIG. 3 is a schematic view of the sensing and detecting principle of the receiving lens body of the present invention;

reference numerals:

1. a base panel; 2. a first lens body; 3. a second lens body; 4. a first extension projection; 5. a second extending bump; 6. a dividing surface groove; 7. a refraction inclined plane; 8. and assembling the cylinder.

Detailed Description

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs; the terminology used in the description of the application herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the application; the terms "including" and "having," and any variations thereof in the description and claims of this application and the description of the figures above, are intended to cover non-exclusive inclusions. The terms "first," "second," and the like in the description and claims of this application or in the foregoing drawings are used for distinguishing between different objects and not for describing a particular sequential order.

Reference herein to "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment can be included in at least one embodiment of the application. The appearances of the phrase in various places in the specification are not necessarily all referring to the same embodiment, nor are separate or alternative embodiments mutually exclusive of other embodiments. It is explicitly and implicitly understood by one skilled in the art that the embodiments described herein can be combined with other embodiments.

In the prior art, a sensor mainly comprises a transmitter, a receiver and a detection circuit. Wherein, the transmitter is used for aiming at the target light beam emitted by the semiconductor light source, the light emitting diode, the laser diode, the infrared emitting diode and the like; the receiver can be divided into a photodiode, a phototriode, a photocell and the like, and optical elements such as a lens, an aperture and the like are arranged in front of the receiver and are mainly used for receiving target light beams and converting received optical signals into electric signals; the detection circuit is used for detecting the received electric signals, filtering the electric signals to obtain effective signals, and transmitting the effective signals to the next module for practical application of the electric signals. In the practical application process, it is not difficult to find that the sensor has a blind area in a short distance, cannot sense the sensor, and needs to be far enough to enter a detection range. The general detection distance is 10mm-250mm, the sensor has good detection sensitivity in the range, and when the detection distance is less than 10mm, the sensor has a blind area which cannot be reached by a light beam in a short detection distance, so that the sensing detection is invalid.

In order to achieve the above object, the embodiment of the present invention provides a receiving lens for sensing detection, which is shown in fig. 1-3 and includes a receiving lens body, the receiving lens body includes a base panel 1, a first lens body 2 and a second lens body 3, the front and back sides of the base panel 1 are respectively provided with the first lens body 2 and the second lens body 3, the outer side surfaces of the top and the bottom of the base panel 1 are respectively provided with a first extension bump 4 and a second extension bump 5, a separation groove 6 is provided between the inner side surface of the first extension bump 4 and the top side surface of the second lens body 3, so as to facilitate the process and the batch production of the receiving lens body, the second extension bump 5 is integrally connected to the bottom of the second lens body 3, and the base panel 1 is integrally connected to the first lens body 2, the second lens body 3, the first extension bump 4 and the second extension bump 5 to form a single receiving lens.

Wherein, the receiving surface of the first lens body 2 is provided with a first optical curved surface of a convex lens to diffuse the light refraction range, the second lens body 3 is provided with a refraction inclined surface 7, the refraction inclined surface 7 is a second optical curved surface, the first optical curved surface and the second optical curved surface are high-order aspheric free curved surfaces, the free curved surface is one of the optical curved surfaces, the surface of the free curved surface is in a free change, various fluctuation and irregular state, the high-order times of the high-order aspheric free curved surface can be 12 times, 14 times or 16 times, and the optical design of 16 times high order is preferably adopted, so that the defects of off-axis coma and astigmatism existing in the light refraction of the traditional lens can be effectively reduced, the light beam can form different-angle refraction ranges on the refraction inclined surface 7,

furthermore, the first extending projection 4 is integrally connected with 2 spaced assembling cylinders 8 on one side of the second lens body 3, so that the first extending projection can be conveniently inserted and positioned to the position on the sensing shell.

In this embodiment, the use principle of the receiving lens body in the light sensing detection is as follows: set for the transmitting chip of light signal at the beam transmitting terminal, transmitting lens is set for to transmitting chip one side, transmitting lens is first preset distance with the horizontal distance of the detection face that sets up in advance, it predetermines the distance for the second for transmitting lens's longitudinal distance to set up the receiving lens body in advance, the inductor has been arranged to one side of receiving lens body, thereby, transmitting chip with the light signal shines the light beam to transmitting lens, the light beam sees through transmitting lens and shines the detection face and form the reflection, light beam reflection disperses to receiving lens body quilt refraction, make the inductor can acquire the light signal of light beam. Generally, when the first preset distance is 10mm to 250mm, the sensor can acquire the optical signal of the light beam through the receiving lens body, at this time, the optical curved surfaces of the first lens body 2 and the second lens body 3 of the receiving lens body may be conventional lens structures, such as a convex lens or a common optical curved surface, and as the first preset distance is longer, the refraction angle of the light beam on the detection surface is smaller, so that the second preset distance is shorter, which can be implemented through a common receiving lens structure.

More specifically, when the first preset distance is smaller than 10mm, at this time, the refraction angle of the light beam on the detection surface is increased, or the second preset distance is increased to enable the receiving lens body to acquire the reflected light beam, but the size of the sensor is obviously increased, or the structure of the receiving lens body is improved to enable the reflected light beam to be refracted to the range which can be received by the sensor under the effect of the receiving lens body, so that the sensing blind area can be shortened, and the size can be reduced. This embodiment is realized by the structure of the improved receiving lens body of the latter, and the structure is as described above, and will not be described in detail here.

In one embodiment of sensing detection, the first preset distance is set to be 8mm, the second preset distance is set to be 4mm, the refraction angle between the receiving lens body and the transmitting lens on the detection surface is about 27 degrees, at this time, the light beam emitted by the transmitting chip with the optical signal to the transmitting lens irradiates on the detection surface and forms angular reflection, but part of the reflected light beam falls on the receiving lens body, and the refraction inclined surface 7 with 16-order high-order optical curved surface is utilized to form refraction ranges with different angles on the refraction inclined surface 7 for the sensor to receive, so that the reflection loss can be reduced, the energy density and the sensitivity of sensing of the near-distance received light are improved, and the sensing blind area is further shortened. It should be noted that, in the present embodiment, on the premise that the receiving lens body can solve the problem that the second preset distance is 4mm, the detection distance with the first preset distance being 610mm is realized.

To sum up, the utility model provides a be applied to receiving lens that sensing detected, receiving lens body adopt high order aspheric lens and second lens body 3 to set refraction inclined plane 7, can effectual reduction tradition lens light refraction exist off-axis coma and astigmatic not enough, improve the refraction scope of the different angles of formation of light beam on refraction inclined plane 7, shorten the light response blind area, promote the light beam and propagate and the neck density that the refraction was received.

The technical principle of the present invention has been described above with reference to specific embodiments, which are only preferred embodiments of the present invention. The utility model discloses a scope of protection not only limits in above-mentioned embodiment, and the all belongings the utility model discloses a technical scheme under the thinking all belongs to the utility model discloses a scope of protection. Those skilled in the art will appreciate that other embodiments of the invention will fall within the scope of the invention without the need for inventive work.

Claims

1. The receiving lens is applied to sensing detection and is characterized by comprising a receiving lens body, wherein the receiving lens body comprises a base panel, a first lens body and a second lens body, the front side and the rear side of the base panel are respectively provided with the first lens body and the second lens body, the outer side surfaces of the top and the bottom of the base panel are respectively provided with a first extension lug and a second extension lug, a separation surface groove is formed between the inner side surface of the first extension lug and the top side surface of the second lens body, the second extension lug is integrally connected with the bottom of the second lens body, and the base panel is integrally connected with the first lens body, the second lens body, the first extension lug and the second extension lug to form a single receiving lens.

2. The receiving lens applied to sensing according to claim 1, wherein the receiving surface of the first lens body is provided with a first optical curved surface of a convex lens to diffuse a light refraction range.

3. The receiving lens applied to sensing according to claim 2, wherein the second lens body is provided with a refraction inclined surface, and the refraction inclined surface is a second optical curved surface.

4. The receiving lens applied to sensing and detecting of claim 3, wherein the first optical curved surface and the second optical curved surface are high-order aspheric free-form surfaces.

5. The receiving lens applied to sensing according to claim 4, wherein the higher order aspheric free-form surface has a higher order number of 16.

6. The receiving lens for sensing of claim 1, wherein the first extending protrusion integrally forms 2 spaced mounting cylinders on one side of the second lens body.

7. The receiving lens applied to sensing detection as claimed in claim 1, wherein when a lateral distance of the receiving lens body relative to a preset detection surface is a first preset distance, and a longitudinal distance of the receiving lens body relative to a preset light beam emitting end is a second preset distance, the light beam is refracted to the receiving lens body through the detection surface to realize sensing signal reception.