CN111638570A - Rotating lens and projection equipment - Google Patents
Rotating lens and projection equipment Download PDFInfo
- Publication number
- CN111638570A CN111638570A CN202010525246.6A CN202010525246A CN111638570A CN 111638570 A CN111638570 A CN 111638570A CN 202010525246 A CN202010525246 A CN 202010525246A CN 111638570 A CN111638570 A CN 111638570A
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- prism
- lens
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- angle
- rotary
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B5/00—Optical elements other than lenses
- G02B5/04—Prisms
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B1/00—Optical elements characterised by the material of which they are made; Optical coatings for optical elements
- G02B1/10—Optical coatings produced by application to, or surface treatment of, optical elements
- G02B1/11—Anti-reflection coatings
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B7/00—Mountings, adjusting means, or light-tight connections, for optical elements
- G02B7/18—Mountings, adjusting means, or light-tight connections, for optical elements for prisms; for mirrors
- G02B7/1805—Mountings, adjusting means, or light-tight connections, for optical elements for prisms; for mirrors for prisms
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- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
- G03B21/00—Projectors or projection-type viewers; Accessories therefor
- G03B21/14—Details
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Optical Elements Other Than Lenses (AREA)
Abstract
The invention discloses a rotary lens and projection equipment, and belongs to the technical field of lenses. The invention provides a rotary lens, which comprises a lens front group, a rotary prism group and a lens rear group, wherein the lens front group, the rotary prism group and the lens rear group sequentially penetrate through the lens front group, the rotary prism group and the lens rear group along the light propagation direction; the front lens group and the rear lens group are mainly used for realizing imaging and amplification; and the rotary prism group is used for changing the emergent light direction. The rotary lens can change the emergent light direction, and the projection equipment using the rotary lens can realize the change of the projection angle and the picture position under the condition of not changing the placement mode, such as projection on a side wall surface and a ceiling wall surface. The system is simple, convenient to use and reliable in performance.
Description
Technical Field
The invention relates to the technical field of lenses, in particular to a rotary lens and projection equipment.
Background
Projection has been widely used in ordinary homes, office meeting rooms, educational institutions, and entertainment venues.
The projection product on the market only has one lens, and the emergent light direction is unique. If the emergent light direction is to be adjusted, for example, the emergent light is firstly projected on a side wall surface and then projected on a ceiling, the placing angle and the emergent light direction of a projection product need to be changed. However, the general projection products are difficult to stably place in multiple directions, often need to be realized by an additional bracket, and are not economical and simple.
Therefore, a lens and a projection product capable of greatly changing the emergent light direction are needed to solve the above problems.
Disclosure of Invention
The invention aims to provide a rotary lens and a projection device, aiming at solving the technical problems in the background technology.
In order to achieve the purpose, the invention adopts the following technical scheme:
the invention provides a rotary lens, which comprises a lens front group, a rotary prism group and a lens rear group, wherein the lens front group, the rotary prism group and the lens rear group sequentially penetrate through the lens front group, the rotary prism group and the lens rear group along the light propagation direction; the front lens group is used for receiving a light beam to be imaged; the rotating prism group is used for changing the emergent direction of the light beam to be imaged; and the rear group of the lens is used for outputting the light beam to be imaged after the emergent direction is changed.
Rotatory prism group contains isosceles right angle prism 1 and isosceles right angle prism 2, and a right angle face laminating isosceles right angle prism 2 of a right angle face of isosceles right angle prism 1, two prisms can rotate as the axle around the normal direction of laminating right angle face.
The hypotenuse face of isosceles right prism 1 has plated the antireflection coating, and the right-angle face that laminates with isosceles right prism 2 has plated the antireflection coating, and another right-angle face has plated and has increased the reflection coating.
The hypotenuse face of isosceles right prism 2 has plated the antireflection coating, and the right-angle face that laminates with isosceles right prism 1 has plated the antireflection coating, and another right-angle face has plated and has increased the reflection coating.
The front lens group and the isosceles right-angle prism 1 form a component, and the rear lens group and the isosceles right-angle prism 2 form a component.
When the cross section of two equal-waist right-angle prisms is similar to a diamond shape, the incident light direction is parallel to the emergent light direction.
When the cross section formed by the two equal-waist right-angle prisms is similar to a right-angled triangle, the incident light direction and the emergent light direction form an included angle of 90 degrees.
The invention also provides projection equipment, wherein the rotary lens is applied, the front lens group and the isosceles right-angle prism 1 form a component and are fixed with the optical machine, and the rear lens group and the isosceles right-angle prism 2 form a rotatable component. The switching between the mode 1 and the mode 2 can be realized by rotating the rotating component of the lens by 180 degrees. When the lens is in the shape 1, namely the section formed by the two equal-waist right-angle prisms is similar to a rhombus, and emergent light is parallel to incident light; when the lens is in the shape 2, namely the cross section formed by the two equal-waist right-angle prisms is similar to a right triangle, emergent light is deflected by 90 degrees relative to incident light.
Compared with the prior art, the invention has the beneficial effects that:
the rotary lens can change the emergent light direction, and the projection equipment using the rotary lens can realize the change of the projection angle and the picture position under the condition of not changing the placement mode, such as projection on a side wall surface and a ceiling wall surface. The system is simple, convenient to use and reliable in performance.
Drawings
FIG. 1 is a schematic view of a rotary lens according to the present invention;
FIG. 2 is a schematic diagram of embodiment 1 (incident light direction is parallel to emergent light direction);
FIG. 3 is a schematic diagram of embodiment 2 (the incident light direction is 90 ° to the emergent light direction) according to the present invention.
The labels in the figure are: 100 is the lens front group, 200 is the rotary prism group, 210 is isosceles right prism 1,211 is the hypotenuse face of isosceles right prism 1, 212 and 213 are the right-angle faces of isosceles right prism 1, 220 is isosceles right prism 2,221 is the hypotenuse face of isosceles right prism 2, 222 and 223 are the right-angle faces of isosceles right prism 2, 300 is the lens rear group, 400 is the rotation axis.
Detailed Description
The present invention will be further described with reference to the following examples, which are intended to illustrate only some, but not all, of the embodiments of the present invention. Based on the embodiments of the present invention, other embodiments used by those skilled in the art without any creative effort belong to the protection scope of the present invention.
Example 1
The invention provides a rotary lens, which comprises a lens front group 100, a rotary prism group 200 and a lens rear group 300, wherein the lens front group 100, the rotary prism group 200 and the lens rear group 300 sequentially penetrate through the lens front group 100, the rotary prism group 200 and the lens rear group 300 along the light propagation direction; the rotating prism group 200 is used to realize changing the emergent light direction. The lens front group 100 is used for receiving a light beam to be imaged; the rotating prism group 200 is used for changing the emergent direction of the light beam to be imaged; and a rear lens group 300 for outputting the light beam to be imaged after the exit direction is changed. The rotary lens is mainly used for realizing imaging and amplification.
The rotating prism group 200 comprises an isosceles right-angle prism 1210 and an isosceles right-angle prism 2220, wherein a right-angle surface 213 of the isosceles right-angle prism 1210 is attached to a right-angle surface 223 of the isosceles right-angle prism 2220, and the two prisms can rotate around the normal direction of the attached right-angle surfaces as a rotating shaft 400.
The hypotenuse face 211 of the isosceles right-angle prism 1210 is plated with an antireflection film, the right-angle face 213 attached to the isosceles right-angle prism 2220 is plated with an antireflection film, and the other right-angle face 212 is plated with an antireflection film.
The hypotenuse face 221 of the isosceles right prism 2220 is coated with an antireflection film, the right-angle face 223 attached to the isosceles right prism 1210 is coated with an antireflection film, and the other right-angle face 222 is coated with an antireflection film.
The front lens group 100 and the isosceles right prism 1210 form a unit, and the rear lens group 300 and the isosceles right prism 2220 form a unit.
When the cross section of two equal-waist right-angle prisms is similar to a diamond shape, the incident light direction is parallel to the emergent light direction.
When the cross section formed by the two equal-waist right-angle prisms is similar to a right-angled triangle, the incident light direction and the emergent light direction form an included angle of 90 degrees.
A projection device, which uses the above-mentioned rotary lens, the front lens group 100 and the isosceles right prism 1210 form a component, and are fixed with the optical machine, the rear lens group 300 and the isosceles right prism 2220 form a rotatable component. By rotating the rotating member of the lens by 180 °, switching between the form 1 (the incident light direction is parallel to the outgoing light direction) and the form 2 (the incident light direction is 90 ° to the outgoing light direction) can be realized, as shown in fig. 1.
Further description is made with reference to examples.
As shown in fig. 2, the cross section of the isosceles right prism 1210 and the isosceles right prism 2220 is similar to a rhombus, and the incident light is transmitted through the front lens group 100 and then enters the inclined plane 211, or is transmitted through the right-angle plane 213 and the right-angle plane 223 and exits from the inclined plane 221; or the light is reflected by the right-angle surface 212, passes through the right- angle surfaces 213 and 223, is reflected by the right-angle surface 222, and exits from the hypotenuse surface 221. The incident light direction is parallel to the emergent light direction.
As shown in fig. 3, the cross section of the isosceles right prism 1210 and the isosceles right prism 2220 is similar to a right triangle, and the incident light is transmitted through the front lens group 100 and then enters the hypotenuse surface 211, or is reflected by the right- angled surfaces 213 and 223 and exits from the hypotenuse surface 221 through the right-angled surface 222; or reflected at angled surface 212, transmitted through angled surfaces 213, 223, and exits angled surface 221. The incident light direction is 90 ° to the emergent light direction.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents and improvements made within the spirit and principle of the present invention are intended to be included within the scope of the present invention.
Claims (9)
1. A rotary lens, comprising:
the front lens group is used for receiving a light beam to be imaged;
the rotating prism group is used for changing the emergent direction of the light beam to be imaged;
and the rear group of the lens is used for outputting the light beam to be imaged after the emergent direction is changed.
2. A rotary lens according to claim 1, wherein said rotary prism group comprises an isosceles right prism 1 and an isosceles right prism 2, one right-angle surface of the isosceles right prism 1 fits one right-angle surface of the isosceles right prism 2, and the isosceles right prism 1 and the isosceles right prism 2 can rotate around the normal of the fit right-angle surfaces as an axis; the inclined side surface of the isosceles right-angle prism 1 is opposite to the front lens group; the bevel face of the isosceles right-angle prism 2 is opposite to the rear lens group.
3. A rotary lens according to claim 2, wherein the hypotenuse face of the isosceles right prism 1 is coated with an antireflection film.
4. A rotary lens barrel according to claim 3, wherein the right-angle surface of the isosceles right prism 2 is coated with an antireflection film.
5. A rotary lens barrel according to claim 4, wherein the other of the right-angle faces of the isosceles right prism 1 is coated with a reflection increasing film.
6. A rotary lens barrel according to claim 2, wherein the hypotenuse face of the isosceles right prism 2 is coated with an antireflection film.
7. A rotary lens barrel according to claim 6, wherein the right-angle surfaces of the isosceles right prism 1 are coated with an antireflection film.
8. A rotary lens barrel according to claim 7, wherein the other of the right-angle faces of the isosceles right-angle prism 2 is coated with a reflection increasing film.
9. A projection device, comprising:
a rotary lens barrel according to any one of claims 1 to 8,
the front lens group and the isosceles right-angle prism 1 form a component and are fixed together with the optical machine, and the rear lens group and the isosceles right-angle prism 2 form a rotatable component.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010525246.6A CN111638570B (en) | 2020-06-10 | 2020-06-10 | Rotating lens and projection equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010525246.6A CN111638570B (en) | 2020-06-10 | 2020-06-10 | Rotating lens and projection equipment |
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| Publication Number | Publication Date |
|---|---|
| CN111638570A true CN111638570A (en) | 2020-09-08 |
| CN111638570B CN111638570B (en) | 2021-06-22 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202010525246.6A Active CN111638570B (en) | 2020-06-10 | 2020-06-10 | Rotating lens and projection equipment |
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| CN (1) | CN111638570B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114895445A (en) * | 2022-05-19 | 2022-08-12 | 湖北久之洋红外系统股份有限公司 | 180-degree reflecting prism group with image translation characteristic |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006204924A (en) * | 2005-01-28 | 2006-08-10 | Karl Storz Development Corp | Optical system for variable direction of view instrument |
| CN101101376A (en) * | 2007-08-03 | 2008-01-09 | 马仁勇 | Color-combination prism manufacturing method |
| CN103229087A (en) * | 2010-12-15 | 2013-07-31 | 奥林巴斯医疗株式会社 | Endoscope optical system |
| CN108968909A (en) * | 2018-08-13 | 2018-12-11 | 长春理工大学 | A kind of binocular inverted image device |
-
2020
- 2020-06-10 CN CN202010525246.6A patent/CN111638570B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006204924A (en) * | 2005-01-28 | 2006-08-10 | Karl Storz Development Corp | Optical system for variable direction of view instrument |
| CN101101376A (en) * | 2007-08-03 | 2008-01-09 | 马仁勇 | Color-combination prism manufacturing method |
| CN103229087A (en) * | 2010-12-15 | 2013-07-31 | 奥林巴斯医疗株式会社 | Endoscope optical system |
| CN108968909A (en) * | 2018-08-13 | 2018-12-11 | 长春理工大学 | A kind of binocular inverted image device |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114895445A (en) * | 2022-05-19 | 2022-08-12 | 湖北久之洋红外系统股份有限公司 | 180-degree reflecting prism group with image translation characteristic |
| CN114895445B (en) * | 2022-05-19 | 2024-05-28 | 湖北久之洋红外系统股份有限公司 | 180-Degree reflecting prism group with image translation characteristic |
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| Publication number | Publication date |
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| CN111638570B (en) | 2021-06-22 |
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