CN202929274U - Prism glued structure - Google Patents
Prism glued structure Download PDFInfo
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- CN202929274U CN202929274U CN201220521676.1U CN201220521676U CN202929274U CN 202929274 U CN202929274 U CN 202929274U CN 201220521676 U CN201220521676 U CN 201220521676U CN 202929274 U CN202929274 U CN 202929274U
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- prism
- glass
- glass prism
- crown
- air layer
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Abstract
The utility model discloses a prism glued structure, which comprises a first glass prism of total reflection or dense-crown optical glass prism with nd of greater than 1.6, a second glass prism of a non total reflection dense-crown glass prism and a black interval frame with through holes, and the black interval frame is clung between the inclined plane of the first glass prism and the second glass prism. The prism glued structure is characterized in that the air layer thickness is easy to be controlled, the fixed value of the prism interval air layer thickness can be guaranteed, the glass surface parallelism at two sides of an air gap can be controlled, the cost is low, and the effect is good.
Description
[technical field]
The utility model relates to a kind of DLP minitype projection machine optical system optical element of the LED of employing illumination, is a kind of prism cementing structure specifically.
[background technology]
In order to make optical system that good picture element or easy to make be arranged, object lens, eyepiece and other system are combined into by two or more than two lens glue usually.Glass prism is for the mode that also adopts gummed to form easy to make in DLP minitype projection machine optical system.Keep certain thickness air layer according to the needs of Optical System Design between the prism of gummed, and guarantee that cemented surface optics effectively can not have interferences in the district, the common employing optical adhesive wayward prism of gummed interval air layer thickness, the vertical engineer operation time of group is long, the craspedodrome rate is low, need eyeglass production firm by the auxiliary gummed of accurate tool, process costs is high.
The utility model is being made in such cases.
[utility model content]
The purpose of this utility model is to provide a kind of easy control air layer thickness, guarantees that prism interval air layer thickness is definite value, controls the air-gap both sides glass surface depth of parallelism, low cost, effective prism cementing structure.
For above-mentioned purpose, the utility model by the following technical solutions:
A kind of prism cementing structure is characterized in that comprising total reflection or n
dThe first glass prism 1 of 1.6 dense-crown optical glass prisms and the second glass prism 2 of non-total reflection crown glass prism and the middle black interval frame 3 that through hole is arranged, described black interval frame 3 is close between the inclined-plane of the first glass prism and the second glass prism.
A kind of prism cementing structure as above is characterized in that being formed with air layer 5 between two inclined-planes of described the first glass prism 1, the second glass prism 2, and the thickness of this air layer 5 equals the thickness of black interval frame 3.
A kind of prism cementing structure as above, the material that it is characterized in that the first glass prism 1 is crown glass, the material of the second glass prism 2 is dense crown material or nd〉1.6 optical glass.
A kind of prism cementing structure as above is characterized in that described the first glass prism 1 is Tp, and its face 11 and the first inclined-plane 12 all are coated with multilayer AR film, its lap inking; The second glass prism 2 is non-isosceles right-angle prism, and its large right angle 21 and the second inclined-plane 22 all are coated with multilayer AR film, its lap inking.
The beneficial effects of the utility model have:
1. black interval frame interval is between two prism inclined-planes, and air layer thickness easy to control easily guarantees the air-gap both sides glass surface depth of parallelism;
2. at the interval point glue of prism upper and lower surface and black interval frame, guarantee that easily cemented surface optics does not effectively have the interference polluter in the district;
4. tear glue open after the two prisms gummed easy, easily reprocess.
[description of drawings]
Fig. 1 is opticpath schematic diagram of the present invention.
Fig. 2 is of the present invention group of vertical explosive view.
Label in accompanying drawing is explained: 1. the first glass prism; 2. the second glass prism; 3. black interval frame; 4.DMD chip.
[embodiment]
Below in conjunction with accompanying drawing and embodiment, the utility model is elaborated:
As shown in the figure, a kind of prism cementing structure comprises total reflection or n
dThe first glass prism 1 of 1.6 dense-crown optical glass prisms and the second glass prism 2 of non-total reflection crown glass prism and the middle black interval frame 3 that through hole is arranged, the area of the intermediate throughholes of black interval frame 3 is the scope that light enters.Described the first glass prism 1 and the second glass prism 2 are right-angle prism, and these two faces corresponding to prism right angle are respectively the first inclined-plane 12 and the second inclined-plane 22.Described black interval frame 3 is close between the inclined-plane of the first glass prism and the second glass prism.N wherein
dExpression d optical index.
Furthermore, be formed with air layer 5 between two inclined-planes of described the first glass prism 1, the second glass prism 2, the thickness of this air layer 5 equals the thickness of black interval frame 3.Because black interval frame 3 thickness are certain, and the high-precision surface of black interval frame 3, the thickness that makes air layer 5 is a definite value.And do not have interferences in black interval frame 3 inner via holes.
As the optimal way of the present embodiment, the material of the first glass prism 1 is crown glass, and the material of the second glass prism 2 is dense crown material or n
d1.6 optical glass.Described the first glass prism 1 is isosceles right-angle prism, and its two right angles face 11 and the first inclined-plane 12 all are coated with multilayer AR film, its lap inking.The second glass prism 2 is non-isosceles right-angle prism, and its large right angle 21 and the second inclined-plane 22 all are coated with multilayer AR film, its lap inking.Described after the joint place point UV of black interval frame 3 and two glass prisms glue and adopt UV-irradiation to solidify gummed, form a pentagon glass prism veneer.
The structure angle α of Fig. 1 is relevant to the material of prism, according to the direction of different materials and incident light chief ray, determines corresponding α angle.
the design concept of above-mentioned glass prism structure is as follows: after the light beam of a branch of similar natural light to light source incides non-isosceles right-angle prism large right angle face and passes cemented prism, light beam incides on dmd chip 4, (dmd chip can carry out Digital Modulation to light to dmd chip 4 to total reflection prism with the projected image light reflection after receiving the control signal of control panel, Digital Micromirror Device has comprised a rectangular array that is comprised of the micro mirror minute surface and has formed, light in this array correspondence and projected image, these minute surfaces and digital signal, when light source and projection lens collaborative work, can the picture the most loyal from camera lens projection reproduce out), be reflected at last in camera lens, the prism of gummed works to change the source light projecting direction.
This prism structure has overcome existing defective, and air layer thickness easy to control particularly guarantees that prism interval air layer thickness is definite value, and numerical value is the thickness of distance piece.Can guarantee during operation that tackifier can not flow into prism workplace optics effectively in the district.After the layman can put the irradiation of UV rubber ultraviolet light voluntarily by Simple and Easy Gauge, gummed greatly reduces the prism cost, and the vertical engineering craspedodrome rate of group is high.
Claims (4)
1. prism cementing structure, it is characterized in that comprising total reflection or nd〉first glass prism (1) of 1.6 dense-crown optical glass prisms and second glass prism (2) of non-total reflection crown glass prism and the middle black interval frame (3) that through hole is arranged, described black interval frame (3) is close between the inclined-plane of the first glass prism and the second glass prism.
2. a kind of prism cementing structure according to claim 1, it is characterized in that being formed with air layer (5) between two inclined-planes of described the first glass prism (1), the second glass prism (2), the thickness of this air layer (5) equals the thickness of black interval frame (3).
3. a kind of prism cementing structure according to claim 2, the material that it is characterized in that the first glass prism (1) is crown glass, the material of the second glass prism (2) is dense crown material or nd〉1.6 optical glass.
4. according to claim 1 and 2 or 3 described a kind of prism cementing structures, is characterized in that described the first glass prism (1) is Tp, and its face (11) and the first inclined-plane (12) all are coated with multilayer AR film, its lap inking; The second glass prism (2) is non-isosceles right-angle prism, and its large right angle (21) and the second inclined-plane (22) all are coated with multilayer AR film, its lap inking.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201220521676.1U CN202929274U (en) | 2012-10-11 | 2012-10-11 | Prism glued structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201220521676.1U CN202929274U (en) | 2012-10-11 | 2012-10-11 | Prism glued structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202929274U true CN202929274U (en) | 2013-05-08 |
Family
ID=48219219
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201220521676.1U Expired - Lifetime CN202929274U (en) | 2012-10-11 | 2012-10-11 | Prism glued structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202929274U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102902040A (en) * | 2012-10-11 | 2013-01-30 | 中山市众盈光学有限公司 | Prism glued structure |
| CN106646698A (en) * | 2017-01-23 | 2017-05-10 | 中山市光大光学仪器有限公司 | Gluing prism set |
| CN113917717A (en) * | 2021-09-03 | 2022-01-11 | 中国科学院西安光学精密机械研究所 | Reflecting type liquid crystal spatial light modulator coupling device adopting right-angle prism group |
-
2012
- 2012-10-11 CN CN201220521676.1U patent/CN202929274U/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102902040A (en) * | 2012-10-11 | 2013-01-30 | 中山市众盈光学有限公司 | Prism glued structure |
| CN106646698A (en) * | 2017-01-23 | 2017-05-10 | 中山市光大光学仪器有限公司 | Gluing prism set |
| CN113917717A (en) * | 2021-09-03 | 2022-01-11 | 中国科学院西安光学精密机械研究所 | Reflecting type liquid crystal spatial light modulator coupling device adopting right-angle prism group |
| CN113917717B (en) * | 2021-09-03 | 2022-10-04 | 中国科学院西安光学精密机械研究所 | Reflection type liquid crystal spatial light modulator coupling device adopting right-angle prism group |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20130508 |
|
| CX01 | Expiry of patent term |