A prism degree tester and a test method thereof

Abstract

The present invention discloses a prismatic power tester and a testing method thereof, comprising a platform, wherein a support foot is fixedly connected to the bottom of the platform, an imaging target is slidably connected to the left side of the platform, a head mold is slidably connected to the middle of the platform, a laser light source is slidably connected to the right side of the platform, an imaging lens is arranged on the left side of the head mold, and an aperture baffle is fixedly connected to the right side of the imaging lens, and a focusing lens is arranged on the right side of the head mold. The present invention provides a prismatic power tester that can meet the requirements of the prismatic power test method for eye protection products of the American standard ANSI / ISEA Z87.1‑2020, fills the gap in the domestic market and solves the problem of dependence on imports, and the prismatic power tester has a simple structure, convenient operation, and low production cost, is suitable for large-scale production and commissioning, and has good development prospects.

Description

Technical Field

[0001] The invention relates to a prism degree tester and a testing method thereof. Background Art

[0002] Prism testers are commonly used to detect the prism difference of plain sunglasses and eye protection products. The designs of existing prism testers in the domestic market mainly meet the test requirements of ISO12311:2013, test methods for personal protective equipment, sunglasses and related goggles, and EN 167:2001, personal eye protection devices and optical test methods.

[0003] At present, there are almost no prismatic testers in China that can meet the requirements of the American standard ANSI / ISEA Z87.1-2020 prismatic test method for eye protection products, and they mainly rely on imports. Summary of the invention

[0004] The object of the present invention is to provide a prism tester and a test method thereof to solve the problems raised in the above-mentioned background technology.

[0005] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a prismatic degree tester, comprising a table, a support foot is fixedly connected to the bottom of the table, an imaging target is slidably connected to the left side of the table, a head mold is slidably connected to the middle of the table, a laser light source is slidably connected to the right side of the table, an imaging lens is arranged on the left side of the head mold, and an aperture baffle is fixedly connected to the right side of the imaging lens, a focusing lens is arranged on the right side of the head mold, and both the imaging lens and the focusing lens are slidably connected to the table.

[0006] Preferably, the supporting feet are provided in three groups, and the supporting feet are evenly distributed on the bottom of the platform.

[0007] Preferably, the wavelength of the laser light source is 600 nanometers.

[0008] Preferably, the focal lengths of the imaging lens and the focusing lens are both 1000 mm.

[0009] Preferably, the imaging target, the imaging lens, the focusing lens and the laser light source are all 1 meter away from each other.

[0010] Preferably, the aperture diameter of the aperture baffle is 6 mm, and the distance between the aperture baffle and the head mold is half of the pupil distance.

[0011] A method for testing a prism tester comprises the following steps:

[0012] (A) Turn on the laser light source, do not place the sample to be tested on the head model for the time being, and fine-tune the position of the head model or imaging target so that the light spot falls on the center of the imaging target crosshairs. This light spot is composed of 3 points;

[0013] (B) Wear the sample to be tested on the head model according to the normal wearing requirements, and adjust the aperture baffle according to the population for which the sample to be tested is applicable. The pupil distance for adults is 64 mm, and the pupil distance for children is 54 mm;

[0014] (C) To test the prism of the right lens, cover the left lens of the sample to be tested, observe the position of the light spot on the imaging target, and record the deviation of the light spot on the imaging target from the horizontal line and the vertical line; To test the prism of the left lens, cover the right lens of the sample to be tested, observe the position of the light spot on the imaging target, and record the deviation of the light spot on the imaging target from the horizontal line or the vertical line, and test the prism base of the sample to be tested in the horizontal and vertical directions;

[0015] (D) and calculate the prism degree of the sample to be tested in the horizontal and vertical directions according to the prism degree of 0.10 cm / m corresponding to each grid of the imaging target of 1 mm;

[0016] (E) Repeat the test steps from (B) to (D) to test other samples to be tested. According to the prism test results of the right lens and the left lens of each sample to be tested, calculate the prism deviation in the horizontal and vertical directions respectively.

[0017] Preferably, the light spot in step (A) is composed of three points, specifically the left eye point and the right eye point of the head model, and the center point of the hole on the aperture baffle.

[0018] Preferably, the prism bases in the horizontal and vertical directions in step (C) are:

[0019] Horizontal prism base: when the base is inward, the light spot on the target is biased towards the center of the cross; when the base is outward, the light spot on the target is biased away from the center of the cross;

[0020] Vertical prism base: when the base is upward, the light spot on the target is above the Y axis; when the base is downward, the light spot on the target is below the Y axis.

[0021] Preferably, the calculation process of the prism deviation in the horizontal direction and the vertical direction in step (E) is:

[0022] Horizontal prismatic power deviation: if the base directions are the same, the prismatic power of the left and right lenses will be added; if the base directions are different, the prismatic power of the left and right lenses will be subtracted;

[0023] Vertical prismatic power deviation: if the base directions are in the same direction, the prismatic power of the left and right lenses will be subtracted; if the base directions are in different directions, the prismatic power of the left and right lenses will be added.

[0024] Compared with the prior art, the beneficial effects of the present invention are: providing a prismatic power tester that can meet the requirements of the American standard ANSI / ISEA Z87.1-2020 eye protection product prismatic power test method, filling the gap in the domestic market and solving the problem of dependence on imports, and the prismatic power tester has a simple structure, convenient operation, and low production cost, is suitable for large-scale production and use, and has good development prospects. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention;

[0026] Figure 2 For the present invention Figure 1 Schematic diagram of the enlarged structure at point A in the middle.

[0027] In the figure: 1. table; 2. support feet; 3. imaging target; 4. head mold; 5. laser light source; 6. imaging lens; 7. aperture baffle; 8. focusing lens. DETAILED DESCRIPTION

[0028] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0029] See also Figure 1-2 A prism power tester includes a platform 1, a support leg 2 is fixedly connected to the bottom of the platform 1, an imaging target 3 is slidably connected to the left side of the platform 1, a crosshair is provided on the imaging target 3, and a scale grid is provided on one side of the crosshair, a head mold 4 is slidably connected to the middle of the platform 1, and the eyeball of the head mold 4 is perforated, a laser light source 5 is slidably connected to the right side of the platform 1, an imaging lens 6 is provided on the left side of the head mold 4, and an aperture baffle 7 is fixedly connected to the right side of the imaging lens 6, a focusing lens 8 is provided on the right side of the head mold 4, and both the imaging lens 6 and the focusing lens 8 are slidably connected to the platform 1.

[0030] Specifically, three groups of supporting feet 2 are provided, and the supporting feet 2 are evenly distributed at the bottom of the table top 1 for supporting the table top 1 .

[0031] Specifically, the wavelength of the laser light source 5 is 600 nanometers.

[0032] Specifically, the focal lengths of the imaging lens 6 and the focusing lens 8 are both 1000 mm.

[0033] Specifically, the mutual distances among the imaging target 3, the imaging lens 6, the focusing lens 8 and the laser light source 5 are all 1 meter, and the tolerance is ±10 mm.

[0034] Specifically, the aperture diameter of the aperture baffle 7 is 6 mm, and the distance between the aperture baffle 7 and the head mold 4 is half of the pupil distance.

[0035] A method for testing a prism tester comprises the following steps:

[0036] (A) Turn on the laser light source 5, do not place the sample to be tested on the head mold 4 for the time being, and fine-tune the position of the head mold 4 or the imaging target 3 so that the light spot falls on the center of the crosshairs of the imaging target 3. This light spot is composed of 3 points;

[0037] (B) Wear the sample to be tested on the head model 4 according to normal wearing requirements, and adjust the aperture baffle 7 according to the population for which the sample to be tested is applicable, wherein the pupil distance for adults is 64 mm and the pupil distance for children is 54 mm;

[0038] (C) To test the prism of the right lens, cover the left lens of the sample to be tested, observe the position of the light spot on the imaging target 3, and record the deviation of the light spot on the imaging target 3 from the horizontal line and the vertical line; To test the prism of the left lens, cover the right lens of the sample to be tested, observe the position of the light spot on the imaging target 3, and record the deviation of the light spot on the imaging target 3 from the horizontal line or the vertical line, and test the prism base of the sample to be tested in the horizontal and vertical directions;

[0039] (D), and according to the prism degree of 0.10 cm / m corresponding to each grid of 1 mm of the imaging target 3, calculate the prism degree of the sample to be tested in the horizontal and vertical directions;

[0040] (E) Repeat the test steps from (B) to (D) to test other samples to be tested. According to the prism test results of the right lens and the left lens of each sample to be tested, calculate the prism deviation in the horizontal and vertical directions respectively.

[0041] Specifically, the light spot in step (A) is composed of three points, namely the left eye point and the right eye point of the head mold 4 , and the center point of the hole on the aperture baffle 7 .

[0042] Specifically, the prism bases in the horizontal and vertical directions in step (C) are:

[0043] Horizontal prism base: when the base is inward, the light spot on target 3 is biased toward the center of the cross; when the base is outward, the light spot on target 3 is biased away from the center of the cross;

[0044] Prism base in vertical direction: when the base is upward, the light spot on target 3 is above the Y axis; when the base is downward, the light spot on target 3 is below the Y axis.

[0045] Specifically, the calculation process of the prism deviation in the horizontal direction and the vertical direction in step (E) is:

[0046] Horizontal prismatic power deviation: if the base directions are the same, the prismatic power of the left and right lenses will be added; if the base directions are different, the prismatic power of the left and right lenses will be subtracted;

[0047] Vertical prismatic power deviation: if the base directions are in the same direction, the prismatic power of the left and right lenses will be subtracted; if the base directions are in different directions, the prismatic power of the left and right lenses will be added.

[0048] It will be apparent to those skilled in the art that the invention is not limited to the details of the exemplary embodiments described above and that the invention can be implemented in other specific forms without departing from the spirit or essential features of the invention. Therefore, the embodiments should be considered exemplary and non-limiting in all respects, and the scope of the invention is defined by the appended claims rather than the foregoing description, and it is intended that all variations falling within the meaning and scope of the equivalent elements of the claims be included in the invention. Any reference numeral in a claim should not be considered as limiting the claim to which it relates.

Claims

1. A method for testing a prism tester, wherein: The prismatic degree tester comprises a platform (1), wherein a support foot (2) is fixedly connected to the bottom of the platform (1), an imaging target (3) is slidably connected to the left side of the platform (1), a head mold (4) is slidably connected to the middle of the platform (1), a laser light source (5) is slidably connected to the right side of the platform (1), an imaging lens (6) is arranged on the left side of the head mold (4), and an aperture baffle (7) is fixedly connected to the right side of the imaging lens (6), a focusing lens (8) is arranged on the right side of the head mold (4), and both the imaging lens (6) and the focusing lens (8) are slidably connected to the platform (1); It is characterized by comprising the following steps: (A) Turn on the laser light source (5), do not place the sample to be tested on the head model (4) for the time being, and fine-tune the position of the head model (4) or the imaging target (3) so that the light spot falls on the center position of the crosshairs of the imaging target (3). The light spot is composed of three points; (B) Wear the sample to be tested on the head model (4) according to normal wearing requirements, and adjust the aperture baffle (7) according to the population for which the sample to be tested is applicable, wherein the pupil distance for adults is 64 mm and the pupil distance for children is 54 mm; (C) To test the prism degree of the right lens, cover the left lens of the sample to be tested, observe the position of the light spot on the imaging target (3), and record the deviation of the light spot on the imaging target (3) from the horizontal line and the vertical line; To test the prism degree of the left lens, cover the right lens of the sample to be tested, observe the position of the light spot on the imaging target (3), and record the deviation of the light spot on the imaging target (3) from the horizontal line or the vertical line, and test the prism degree base of the sample to be tested in the horizontal direction and the vertical direction; (D), and according to the prism degree of 0.10 cm / m corresponding to each grid of 1 mm of the imaging target (3), calculate the prism degree of the sample to be tested in the horizontal and vertical directions; (E) Repeat the test steps from (B) to (D) to test other samples to be tested. According to the prism test results of the right lens and the left lens of each sample to be tested, calculate the prism deviation in the horizontal direction and the vertical direction respectively; The calculation process of the prismatic power deviation in the horizontal and vertical directions is as follows: horizontal prismatic power deviation: when the base directions are in the same direction, the prismatic power of the left and right lenses is added; when the base directions are in different directions, the prismatic power of the left and right lenses is subtracted; vertical prismatic power deviation: when the base directions are in the same direction, the prismatic power of the left and right lenses is subtracted; when the base directions are in different directions, the prismatic power of the left and right lenses is added.

2. The testing method of a prism tester according to claim 1, characterized in that: The light spot described in step (A) is composed of three points, specifically the left eye point and the right eye point of the head mold (4), and the center point of the hole on the aperture baffle (7).

3. The testing method of a prism tester according to claim 1, characterized in that: The horizontal and vertical prism bases described in step (C): Horizontal prism degree base: when the base is inward, the light spot on the target (3) deviates from the center of the cross; when the base is outward, the light spot on the target (3) deviates from the center of the cross; Prism base in the vertical direction: when the base is facing upward, the light spot on the target (3) is above the Y axis; when the base is facing downward, the light spot on the target (3) is below the Y axis.

4. The testing method of a prism tester according to claim 1, characterized in that: The supporting feet (2) are provided in three groups, and the supporting feet (2) are evenly distributed on the bottom of the platform (1).

5. The testing method of a prism tester according to claim 1, characterized in that: The wavelength of the laser light source (5) is 600 nanometers.

6. The testing method of a prism tester according to claim 1, characterized in that: The focal lengths of the imaging lens (6) and the focusing lens (8) are both 1000 millimeters.

7. The testing method of a prism tester according to claim 1, characterized in that: The mutual distances between the imaging target (3), the imaging lens (6), the focusing lens (8) and the laser light source (5) are all 1 meter.

8. The testing method of a prism tester according to claim 1, characterized in that: The aperture diameter of the aperture baffle (7) is 6 millimeters, and the distance between the aperture baffle (7) and the head mold (4) is half the pupil distance.

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