Ophthalmic and Sun Photochromatic Glasses

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Product Code 91103 and 91111
Quality and Standards IS 6472:1976
6000 dozens. of Photochromatic lenses
Valued at : Rs. 9360000
Production Capacity 1150 dozs. of Coloured glasses
Valued at: Rs.1242000
Total: Rs. 10602000
Uploaded on June 2007


The people of all age groups use sunglasses as an aid to protect eyes against glare or wind and also as a fashion wear. The present younger generations is using these glasses mainly as fashion in different colours and varieties. The sunglasses are mostly manufactured in plane without power in various sizes, colours and shades.

Photochromatic glasses are the latest introduction in the range of sunglasses in the country. These are special variety of glasses with the characteristics that when the sun light strikes on them the invisible micro-crystals of silver halides inside the glass automatically get darker and imparts colour and shade to the glass and in normal indoor light, the glasses revert to its colourless clear transparency. These glasses also protect eyes from UV rays and are useful both as sunglasses and reading glasses.

Market Potential

There is wide spread use of sunglasses for eye care apart from the style and fashion. The need of powered glasses is felt after the age of forty. The demand for sunglasses/ophthalmic glasses is increasing day-by-day to produce ophthalmic lenses as per doctor's prescription. There is a good scope for setting up of new units with modern machinery in different parts of the country, particularly in the urban and semi-urban areas, where there is immediate demand for the product.

Basis and Presumptions

The project is based on double shift of 8 hours per day with 300 working days in a year utilising the latest automatic machines indigenously available. The prices and other charges shown in the profile may vary from place to place and brand of the product.

Implementation Schedule

Sl. No. Activity Period
l Project preparation and acquirement of shed and provisional Registration etc. 2
2 Procurement of machinery and raw materials 4
3 Installation of machinery and equipments and appointment of Labour etc. 2
4 Starting trial production 1
Total 9

Technical Aspects

Process of Manufacture

Glass blanks of particular diameter and thickness are selected on the basis of power to be given to a lens. Glass blanks are first blocked with the help of surface blocker which is latest attachment developed for blocking purposes. After blocking the surfaces are ground by means of Diamond Curve Generator. After grinding and smoothing, the surface is polished with the help of fixing felt cloth and using polishing material (cerium oxide) on fully automatic machines. The polished glass blanks are then de-blocked in lloy reclaim tank, that is a compact unit for de-blocking of lenses. The process is further repeated for grinding and polishing of the second surface of the blanks. Lenses are then cleaned and tested for accuracy and perfection. Though the process of grinding and polishing is simple, it is quite sophisticated in practice with rigid quality control measures at each stage of manufacture.

Quality Control and Standards

The specifications laid down by the Bureau of Indian Standards are:

IS 6472:1976 General requirement for tinted ophthalmic glass.

Financial Aspects

A Fixed Capital

Land and Building



Land 150 sq meter.@ Rs 4000 /Sq.m 600000
Machinery shed 70 sq meter @ Rs. 4000 /Sq. m 280000
Godown & office 70 sq mtr @ Rs 7000/sq mtr 490000
Total 1370000

Machinery and Equipments

Particular items


Cost (Rs.)

Spherical Diamond Curve Generator with motor and pump on three phase 440 volts, 1 HP on AC supply and switch 1 No. 60000
Automatic two spindle spherical machine with feeding pump to each spindles for smoothing with switch and motors of ½ HP each and timer 2 Sets 60000
Automatic two spindle spherical machine with feeding pump to each spindle for polishing with motor and ½ HP motor of each 5 Sets 100000
Surface blocker and deblocker unit with adjustable exterior 1 Set 20000
Thermostat, 220 V AC.1000 watts. Set of grinding and polishing spherical tools 20 pairs 20 Pairs 3000
Spherical blocking gotes 50 mm to 55 mm each 25 doz. Pairs 3000
Total 246000

Testing Equipments



Brass gauges 600±diapter 10 Nos. (Each Rs. 40) 4000
Lensometer (Indigenous) 1 No. 15000
Lens measure (Indigenous) 2 No. 1500
Trial set 1 Set 4000
Office equipment, furniture etc.   50000
Installation, electrification charges at 10% of the total cost of machinery and equipment 7450
Preliminary and pre-operative expenses 15000
Total 96950

Working Capital (Per Month)

(i)Staff and Labour (per month)



Salary month (Rs.)

Total (Rs.)

Supervisor 2 10000 20000
Skilled workers 10 5000 50000
Semi-skilled workers 4 4000 16000
Clerk-cum-Typist 1 5000 5000
Watchman/Peon 1 3000 3000
Total 94000
+ Perquisites 22% on salary 20680
Total 114680

(ii)Raw Materials (per month)



Amount (Rs.)

Photochromic glass blanks i.e. (photogrey, photogrey extra, photobrown and photosun) of 60 mm to 65 mm diameter of 2.8 mm to 5 mm thickness @ Rs.1080 per doz. 520 561600
Coloured glass blanks of different shades i.e. SP2, SP4 and SP10 of 55 to 65 mm diameter and 3.00 mm to 5.00 mm thickness @ Rs. 720 per doz. 100 doz. Pairs 72000
Abrasive and polishing compounds LS 35000
Blocking alloy and cleaning chemical and other allied materials LS 3000
Packing materials LS 2000
Other miscellaneous LS 1000
Total 642600

(iii)Other Contingent Expenses (per month)



Postage and stationery 2000
Telephone expenses 3000
Consumable stores 3000
Repairs and maintenance 5000
Advertisement and publicity 5000
Miscellaneous expenses 5000
Insurance 2190
Total 25190

(iv) Utilities (per month)


Value (Rs.)

Power 10000
Water 300
Total 10300

(v) Total Recurring Expenditure (per month)

(i+ii+iii+iv) 792770
Total working capital for 2 months (792770 × 2) 1585540

Total Capital Investment

Building plus Machinery and Equipments 1712950
Working capital fo r 2 m onths 1585540
Total 3298490

Machinery Utilisation

85% of utilisation has been taken into consideration on the machinery and man power.

Financial Analysis

Cost of Production (per annum)

Total recurring expenditure 9513240
Depreciation on machinery and equipment @ 10% 34295
Depreciation on building 5% 68500
Interest on investment at @ 13% 428803.7
Total 10044838.7


Particular items

Turn-over (per year)

6000 doz. Pairs of Photochromic lenses of various diameters, thickness and shades at an average rate of Rs.1560 per doz. Pairs 9360000
1150 doz. Pairs of coloured glass blanks of different diameters, thickness and shades at an average rate of Rs.1080 per doz. Pairs 1242000
Total 10602000

Profit (per year)



Turnover 10602000
Cost of production 10044838.7
Profit 557161.3

Net Profit Ratio


Net profit per year × 100

Turn over per year


557161.3 x 100



Rate of Return


Net Profit per year × 100

Total Investment


557161.3 x 100



Break-even Point

Fixed Cost


Depreciation 102795
Interest on total investment 428803.7
Insurance 26280
40% of Salaries and wages 550464
40% of Other contingent expenses 110400
Total 1218742.7


Fixed Cost x 100

Fixed cost + Net Profit(per year)


1218742.7 x 100

1218742.7 + 557161.3



Addresses of Machinery and Equipment Suppliers

  • M/s. Prabhat Works
    1055-56, Lal Kuan,
  • M/s. New Way Optical Industries
    2795, Peepal Mahadev,
    Hauz Kazi, Delhi-110006.
  • M/s. J.C. Dass and Co.
    7, Usha Ganj,
    Indore (MP).

  • Raw Material Suppliers

  • M/s. Jain Optical Industries
    Chasma Building, Ballimaran Street,
    Chandni Chowk,
  • M/s. Micro Abrasives
    65, Jor Bagh,
    New Delhi.
  • M/s. Indian Rare Earth Ltd.
    (Cerium Oxide),
    Udyog Mandal-683501,
  • M/s. Ehance Pilkington Ltd.
    (Glass Blanks),
    A Subsidiary of Pilkintor Bros.,
    PLC,St. Asaph Clyyd LL.176,
    LL Great, (Britain).
  • M/s. Corning France
    BP 61, 7721, Avor,
    Gedey, (France).
  • M/s. Desag, Dehlshe Special Glass
    at Grunenplan Posttach,
    80, D-3223, Delligsen-2,
    (West Germany).

For further information please contact

Information Manager
TIMEIS Project
E-mail: timeis@ficci.com