CN201037874Y - Optical glass hot-pressing forming aspheric surface light gathering element - Google Patents

Abstract

The utility model relates to an optical glass hot press moulding aspherical beam element. The technical issue to be solved by the utility model is to provide an optical glass hot press moulding aspherical beam element with novel structure design, low cost and high positioning precision so as to save labor and material, lighten labor intensity, simplify processing technology and improve alignment precision, thus improving solar energy concentration ratio, utilization and product performance price ratio. The technical proposal utilized to solve the issue is that: the optical glass hot press moulding aspherical beam element is characterized in hot press moulding of an aspherical lens, a parallel flat plate, a fixed flat plate and a light guide tetragonal pyramidal prism connected together in sequence at a time.

Description

Optical glass heat pressing molding aspheric surface collective optics

Technical field

The utility model relates to a kind of collective optics, particularly a kind of optical glass heat pressing molding aspheric surface collective optics, can be applicable to solar lighting, Generate, Generation, Generator volt system, and can expand to the infrared electro receiving system and the novel semi-conductor lighting source application system in each field.

Background technology

For relative aperture, the expansion visual field that increases optical system, improve the performance of illuminance homogeneity, simplified structure, raising system, in a lot of optical systems, all adding aspheric optical element.For example utilize sun power for high-level efficiency, the Cassegrain system that can adopt aspheric surface to form, the tracker of additional high accuracy constitutes solar concentrator, but because aspheric surface optical accessory processing technology complexity needs to adopt series of processes, blank processing, roughing, corase grind, correct grinding, polishing; In fixed, edging, gummed etc.Cause mismachining tolerance higher, make difficulty, debugging trouble, the expense height, Salar light-gathering is than low.

Summary of the invention

The technical problems to be solved in the utility model is: provide a kind of structural design novelty, cost is low, bearing accuracy is high optical glass heat pressing molding aspheric surface collective optics at the problem of above-mentioned existence, to reach labor and material saving, reduce labor intensity, simplified processing process, improve the purpose of accuracy of alignment, thereby improve optically focused ratio, utilization factor and the cost performance of product of sun power.

The technical scheme that the utility model adopted is: optical glass heat pressing molding aspheric surface collective optics is characterized in that: it is once hot-forming by the non-spherical lens that is connected in turn, parallel flat, fixed flat planar and leaded light four directions prism.

The design formula of described non-spherical lens is:

$Z=\frac{\mathrm{<figure-callout\; id="2"\; label="c\; r"\; filenames="Y20072010619100061.png"\; state="\{\{state\}\}">c</figure-callout>}{r}^{}{}^2}{1+\sqrt{1-(1+k)c^2{\mathrm{<figure-callout\; id="2"\; label="r"\; filenames="Y20072010619100061.png"\; state="\{\{state\}\}">r</figure-callout>}}^2}}+a_1{\mathrm{<figure-callout\; id="2"\; label="r"\; filenames="Y20072010619100061.png"\; state="\{\{state\}\}">r</figure-callout>}}^2+a_2{\mathrm{<figure-callout\; id="4"\; label="r"\; filenames="Y20072010619100061.png"\; state="\{\{state\}\}">r</figure-callout>}}^4+a_3{\mathrm{<figure-callout\; id="6"\; label="r"\; filenames="Y20072010619100071.png"\; state="\{\{state\}\}">r</figure-callout>}}^6{+a}_4{r}^8+a_5{r}^{10}+\mathrm{\&Lambda;}$

Z is a rise in the formula, r ²=x ²+ y ²First on above equation the right is equivalent to a spherical equation, is called aspheric benchmark sphere, and c is the curvature of benchmark sphere, a ₁, a ₂, a ₃, a ₄, a ₅Be asphericity coefficient, Λ represents the aspheric surface high-order term (can ignore usually) after the 7th.

Described aspherical lens surface is coated with the film of one deck transmissive infrared band, reflection near infrared and visible light wave range sunshine.

Described parallel flat is rounded, and symmetry has two elongated slots on it.

Described fixed flat planar is square.

Described leaded light prism is four prisms.

The beneficial effects of the utility model are: the utility model adopts not only labor and material saving of hot-forming processing, alleviated labour intensity, simplified processing technology, do not need to aspheric surface roughly grind, finish grind, multiple working procedure such as polishing, a plurality of optical elements are once molding formed, saved fixed in, multiple working procedure such as gummed, need not assemble adjustment, improve accuracy of alignment, thereby improved optically focused ratio, utilization factor and the cost performance of product of sun power; On the circular parallel flat symmetry have two elongated slots, this device can be divided into the edge bore of putting in order Shu Guang four bundle light, forms four luminous points, the concentricity in order to control luminous energy focusing surface and detector element and optical axis can be good at collective optics between two parties.

Description of drawings

Fig. 1 is a front view of the present utility model.

Fig. 2 is the right view of Fig. 1.

Fig. 3 is the vertical view of Fig. 1.

Fig. 4 is an index path of the present utility model.

Fig. 5 is that the utility model is applied to the synoptic diagram in the Cassegrain system.

Embodiment

Shown in Fig. 1,2,3,4, present embodiment is once hot-forming by the non-spherical lens 1 that is connected in turn, circular parallel flat 2, rectangle fixed flat planar 3 and leaded light tetragonal pyramid prism 4, and the design formula of described non-spherical lens 1 is: $Z=\frac{\mathrm{<figure-callout\; id="2"\; label="c\; r"\; filenames="Y20072010619100061.png"\; state="\{\{state\}\}">c</figure-callout>}{r}^{}{}^2}{1+\sqrt{1-(1+k)c^2{\mathrm{<figure-callout\; id="2"\; label="r"\; filenames="Y20072010619100061.png"\; state="\{\{state\}\}">r</figure-callout>}}^2}}+a_1{\mathrm{<figure-callout\; id="2"\; label="r"\; filenames="Y20072010619100061.png"\; state="\{\{state\}\}">r</figure-callout>}}^2+a_2{\mathrm{<figure-callout\; id="4"\; label="r"\; filenames="Y20072010619100061.png"\; state="\{\{state\}\}">r</figure-callout>}}^4+a_3{\mathrm{<figure-callout\; id="6"\; label="r"\; filenames="Y20072010619100071.png"\; state="\{\{state\}\}">r</figure-callout>}}^6+a_4{r}^8+a_5{r}^{10}+\mathrm{\&Lambda;},$ Wherein, z is a rise, r ²=x ²+ y ²First on above equation the right is equivalent to a spherical equation, is called aspheric benchmark sphere, and c is the curvature of benchmark sphere, a ₁, a ₂, a ₃, a ₄, a ₅Be asphericity coefficient, Λ represents the aspheric surface high-order term (can ignore usually) after the 7th.Be coated with infrared anti-reflection film and near infrared visible light reflectance coating in this lens outer surface, make the sunshine that it can the transmission infrared band, and the sunshine of reflection near infrared and visible light wave range; Symmetry has two elongated slot 2-1 on the circular parallel flat 2, this device can be divided into the edge bore of putting in order Shu Guang four bundle light, form four luminous points, the concentricity in order to control luminous energy focusing surface and detector element and optical axis can be good at collective optics between two parties.

Cassegrain system as shown in Figure 5, have parabolic primary mirror 5, prism 6 and secondary mirror 7, secondary mirror 7 adopts optical glass heat pressing molding aspheric surface collective optics of the present utility model, infrared electro receiver and the visible photelectric receiver of near infrared are set respectively on F, the F of system, have enlarged the scope that receives the sunshine spectral coverage.After sunshine is incident on parabolic primary mirror 5, project on the secondary mirror 7 through reflection, enter near infrared and visible photelectric receiver F after the reflection of part near infrared and visible light entered prism 6, infrared band enters infrared electro receiver F by parallel flat 2, fixed flat planar 3, leaded light prism 4.

Claims (6)

1. optical glass heat pressing molding aspheric surface collective optics, it is characterized in that: it is once hot-forming by the non-spherical lens that is connected in turn (1), parallel flat (2), fixed flat planar (3) and leaded light tetragonal pyramid prism (4).

2. optical glass heat pressing molding aspheric surface collective optics according to claim 1 is characterized in that the design formula of described non-spherical lens (1) is:

$Z=\frac{{\mathrm{cr}}^2}{1+\sqrt{1-(1+k)c^2{r}^2}}+a_1{r}^2+a_2{r}^4+a_3{r}^6+a_4{r}^8+a_5{r}^{10}+\mathrm{\&Lambda;}$

3. optical glass heat pressing molding aspheric surface collective optics according to claim 1 is characterized in that: described non-spherical lens (1) surface is coated with the film of one deck transmissive infrared band, reflection near infrared and visible light wave range sunshine.

4. optical glass heat pressing molding aspheric surface collective optics according to claim 1 and 2 is characterized in that: described parallel flat (2) is rounded, and symmetry has two elongated slots (2-1) on it.

5. optical glass heat pressing molding aspheric surface collective optics according to claim 1 and 2 is characterized in that: described fixed flat planar (3) is square.

6. optical glass heat pressing molding aspheric surface collective optics according to claim 1 and 2 is characterized in that: described leaded light prism (4) is the tetragonal pyramid prism.

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